{"transactions":[{"id":4614038,"issuer":{"id":2163,"kind":"organization","name":"Entrada Therapeutics, Inc.","symbol":"TRDA"},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2480,"kind":"person","name":"EVNIN LUKE","position":2,"cik":"0001134657","reported_name":"EVNIN LUKE","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2481,"kind":"person","name":"GADICKE ANSBERT","position":3,"cik":"0001134655","reported_name":"GADICKE ANSBERT","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2482,"kind":"person","name":"Foley Todd","position":4,"cik":"0001473930","reported_name":"Foley Todd","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":5,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":6,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":7,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":8,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2487,"kind":"organization","name":"MPM BIOVENTURES 2018 (B), L.P.","position":9,"cik":"0001729504","reported_name":"MPM BIOVENTURES 2018 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2488,"kind":"organization","name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","position":10,"cik":"0001734817","reported_name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2026-09-09T23:23:33.000Z","date":"2026-09-09","kind":"sale","planned":false,"acquired":false,"shares":28837,"price":7.13,"value":205607.81,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F8","text":"The shares were sold as follows: 13,095 by BV 2014, 873 by BV 2014(B), 451 by AM BV2014, 13,439 by BV 2018, 714 by BV 2018(B) and 265 by AM BV2018."},{"field":"price","element":"transactionPricePerShare","label":"F9","text":"Price represents the weighted average sale price of the shares sold. The sale price ranged from $7.02 to $7.54 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding\nthe number of shares sold at each separate price within the range set forth in this Form 4."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its respective pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F10","text":"The shares are held as follows: 1,764,167 by BV 2014, 117,667 by BV 2014(B), 60,722 by AM BV2014, 1,810,592 by BV 2018, 96,232 by BV 2018(B) and 35,735  by AM BV2018."}],"balance_after":3885115,"source":{"system":"sec-edgar","filing":"0001231919-26-001155","document":"form4-09092026_110922.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1765091/000123191926001155/form4-09092026_110922.xml","form_type":"4"}},{"id":4614037,"issuer":{"id":2163,"kind":"organization","name":"Entrada Therapeutics, Inc.","symbol":"TRDA"},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2480,"kind":"person","name":"EVNIN LUKE","position":2,"cik":"0001134657","reported_name":"EVNIN LUKE","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2481,"kind":"person","name":"GADICKE ANSBERT","position":3,"cik":"0001134655","reported_name":"GADICKE ANSBERT","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2482,"kind":"person","name":"Foley Todd","position":4,"cik":"0001473930","reported_name":"Foley Todd","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":5,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":6,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":7,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":8,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2487,"kind":"organization","name":"MPM BIOVENTURES 2018 (B), L.P.","position":9,"cik":"0001729504","reported_name":"MPM BIOVENTURES 2018 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2488,"kind":"organization","name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","position":10,"cik":"0001734817","reported_name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2026-09-09T23:23:33.000Z","date":"2026-09-08","kind":"sale","planned":false,"acquired":false,"shares":192500,"price":7.41,"value":1426425.0,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F5","text":"The shares were sold as follows: 87,411 by BV 2014, 5,830 by BV 2014(B), 3,009 by AM BV2014, 89,712 by BV 2018, 4,768 by BV 2018(B) and 1,770 by AM BV2018."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"Price represents the weighted average sale price of the shares sold. The sale price ranged from $6.97 to $7.70 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its respective pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F7","text":"The shares are held as follows: 1,777,262 by BV 2014, 118,540 by BV 2014(B), 61,173 by AM BV2014, 1,824,031 by BV 2018, 96,946 by BV 2018(B) and 36,000 by AM BV2018."}],"balance_after":3913952,"source":{"system":"sec-edgar","filing":"0001231919-26-001155","document":"form4-09092026_110922.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1765091/000123191926001155/form4-09092026_110922.xml","form_type":"4"}},{"id":4614036,"issuer":{"id":2163,"kind":"organization","name":"Entrada Therapeutics, Inc.","symbol":"TRDA"},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2480,"kind":"person","name":"EVNIN LUKE","position":2,"cik":"0001134657","reported_name":"EVNIN LUKE","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2481,"kind":"person","name":"GADICKE ANSBERT","position":3,"cik":"0001134655","reported_name":"GADICKE ANSBERT","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2482,"kind":"person","name":"Foley Todd","position":4,"cik":"0001473930","reported_name":"Foley Todd","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":5,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":6,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":7,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":8,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2487,"kind":"organization","name":"MPM BIOVENTURES 2018 (B), L.P.","position":9,"cik":"0001729504","reported_name":"MPM BIOVENTURES 2018 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2488,"kind":"organization","name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","position":10,"cik":"0001734817","reported_name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2026-09-09T23:23:33.000Z","date":"2026-09-04","kind":"sale","planned":false,"acquired":false,"shares":38500,"price":7.11,"value":273735.0,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The shares were sold as follows: 17,482 by MPM BioVentures 2014, L.P. (\"BV 2014\"), 1,166 by MPM BioVentures 2014(B), L.P. (\"BV 2014(B)\"), 602 by MPM Asset Management Investors BV2014 LLC (\"AM BV2014\"), 17,942 by MPM BioVentures 2018, L.P. (\"BV 2018\"), 954 by MPM BioVentures 2018 (B), L.P. (\"BV 2018(B)\") and 354 by MPM Asset Management Investors BV2018 LLC (\"AM BV2018\"). MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC (\"BV2014 LLC\") are the direct and indirect general partners of BV 2014 and BV 2014(B). BV2014 LLC is the manager of AM BV2014. MPM BioVentures 2018 GP LLC and MPM BioVentures 2018 LLC (\"BV2018 LLC\") are the direct and indirect general partners of BV 2018 and BV 2018(B). BV 2018 LLC is the manager of AM BV2018. Messrs. Evnin, Foley and Gadicke are managing directors of BV 2014 LLC and BV 2018 LLC."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Price represents the weighted average sale price of the shares sold. The sale price ranged from $7.01 to $7.16 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The shares are held as follows: 1,864,673 by BV 2014, 124,370 by BV 2014(B), 64,182 by AM BV2014, 1,913,743 by BV 2018, 101,714 by BV 2018(B) and 37,770 by AM BV2018."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its respective pecuniary interest therein."}],"balance_after":4106452,"source":{"system":"sec-edgar","filing":"0001231919-26-001155","document":"form4-09092026_110922.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1765091/000123191926001155/form4-09092026_110922.xml","form_type":"4"}},{"id":3645,"issuer":{"id":2163,"kind":"organization","name":"Entrada Therapeutics, Inc.","symbol":"TRDA"},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2480,"kind":"person","name":"EVNIN LUKE","position":2,"cik":"0001134657","reported_name":"EVNIN LUKE","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2481,"kind":"person","name":"GADICKE ANSBERT","position":3,"cik":"0001134655","reported_name":"GADICKE ANSBERT","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2482,"kind":"person","name":"Foley Todd","position":4,"cik":"0001473930","reported_name":"Foley Todd","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":5,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":6,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":7,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":8,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2487,"kind":"organization","name":"MPM BIOVENTURES 2018 (B), L.P.","position":9,"cik":"0001729504","reported_name":"MPM BIOVENTURES 2018 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2488,"kind":"organization","name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","position":10,"cik":"0001734817","reported_name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2026-09-03T23:21:03.000Z","date":"2026-09-03","kind":"sale","planned":false,"acquired":false,"shares":32263,"price":7.17,"value":231325.71,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F8","text":"The shares were sold as follows: 14,650 by BV 2014, 977 by BV 2014(B), 504 by AM BV2014, 15,036 by BV 2018, 799 by BV 2018(B) and 297 by AM BV2018."},{"field":"price","element":"transactionPricePerShare","label":"F9","text":"Price represents the weighted average sale price of the shares sold. The sale price ranged from $7.0434 to $7.405 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding\nthe number of shares sold at each separate price within the range set forth in this Form 4."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its respective pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F10","text":"The shares are held as follows: 1,882,155 by BV 2014, 125,536 by BV 2014(B), 64,784 by AM BV2014, 1,931,685 by BV 2018, 102,668 by BV 2018(B) and 38,124 by AM BV2018."}],"balance_after":4144952,"source":{"system":"sec-edgar","filing":"0001231919-26-001143","document":"form4-09032026_110951.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1765091/000123191926001143/form4-09032026_110951.xml","form_type":"4"}},{"id":3644,"issuer":{"id":2163,"kind":"organization","name":"Entrada Therapeutics, Inc.","symbol":"TRDA"},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2480,"kind":"person","name":"EVNIN LUKE","position":2,"cik":"0001134657","reported_name":"EVNIN LUKE","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2481,"kind":"person","name":"GADICKE ANSBERT","position":3,"cik":"0001134655","reported_name":"GADICKE ANSBERT","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2482,"kind":"person","name":"Foley Todd","position":4,"cik":"0001473930","reported_name":"Foley Todd","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":5,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":6,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":7,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":8,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2487,"kind":"organization","name":"MPM BIOVENTURES 2018 (B), L.P.","position":9,"cik":"0001729504","reported_name":"MPM BIOVENTURES 2018 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2488,"kind":"organization","name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","position":10,"cik":"0001734817","reported_name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2026-09-03T23:21:03.000Z","date":"2026-09-02","kind":"sale","planned":false,"acquired":false,"shares":25131,"price":7.19,"value":180691.89,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F5","text":"The shares were sold as follows: 11,412 by BV 2014, 761 by BV 2014(B), 393 by AM BV2014, 11,712 by BV 2018, 622 by BV 2018(B) and 231 by AM BV2018."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"Price represents the weighted average sale price of the shares sold. The sale price ranged from $6.9601 to $7.3273 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its respective pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F7","text":"The shares are held as follows: 1,896,805 by BV 2014, 126,513 by BV 2014(B), 65,288 by AM BV2014, 1,946,721 by BV 2018, 103,467 by BV 2018(B) and 38,421 by AM BV2018."}],"balance_after":4177215,"source":{"system":"sec-edgar","filing":"0001231919-26-001143","document":"form4-09032026_110951.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1765091/000123191926001143/form4-09032026_110951.xml","form_type":"4"}},{"id":3643,"issuer":{"id":2163,"kind":"organization","name":"Entrada Therapeutics, Inc.","symbol":"TRDA"},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2480,"kind":"person","name":"EVNIN LUKE","position":2,"cik":"0001134657","reported_name":"EVNIN LUKE","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2481,"kind":"person","name":"GADICKE ANSBERT","position":3,"cik":"0001134655","reported_name":"GADICKE ANSBERT","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2482,"kind":"person","name":"Foley Todd","position":4,"cik":"0001473930","reported_name":"Foley Todd","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":5,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":6,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":7,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":8,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2487,"kind":"organization","name":"MPM BIOVENTURES 2018 (B), L.P.","position":9,"cik":"0001729504","reported_name":"MPM BIOVENTURES 2018 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2488,"kind":"organization","name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","position":10,"cik":"0001734817","reported_name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2026-09-03T23:21:03.000Z","date":"2026-09-01","kind":"sale","planned":false,"acquired":false,"shares":29088,"price":7.06,"value":205361.28,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The shares were sold as follows: 13,208 by MPM BioVentures 2014, L.P. (\"BV 2014\"), 881 by MPM BioVentures 2014(B), L.P. (\"BV 2014(B)\"), 455 by MPM Asset Management Investors BV2014 LLC (\"AM BV2014\"), 13,556 by MPM BioVentures 2018, L.P. (\"BV 2018\"), 720 by MPM BioVentures 2018 (B), L.P. (\"BV 2018(B)\") and 268 by MPM Asset Management Investors BV2018 LLC (\"AM BV2018\"). MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC (\"BV2014 LLC\") are the direct and indirect general partners of BV 2014 and BV 2014(B). BV2014 LLC is the manager of AM BV2014. MPM BioVentures 2018 GP LLC and MPM BioVentures 2018 LLC (\"BV2018 LLC\") are the direct and indirect general partners of BV 2018 and BV 2018(B). BV 2018 LLC is the manager of AM BV2018. Messrs. Evnin, Foley and Gadicke are managing directors of BV 2014 LLC and BV 2018 LLC."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Price represents the weighted average sale price of the shares sold. The sale price ranged from $6.80 to $7.15 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The shares are held as follows: 1,908,217 by BV 2014, 127,274 by BV 2014(B), 65,681 by AM BV2014, 1,958,433 by BV 2018, 104,089 by BV 2018(B) and 38,652 by AM BV2018."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its respective pecuniary interest therein."}],"balance_after":4202346,"source":{"system":"sec-edgar","filing":"0001231919-26-001143","document":"form4-09032026_110951.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1765091/000123191926001143/form4-09032026_110951.xml","form_type":"4"}},{"id":672221,"issuer":{"id":2163,"kind":"organization","name":"Entrada Therapeutics, Inc.","symbol":"TRDA"},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2480,"kind":"person","name":"EVNIN LUKE","position":2,"cik":"0001134657","reported_name":"EVNIN LUKE","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2481,"kind":"person","name":"GADICKE ANSBERT","position":3,"cik":"0001134655","reported_name":"GADICKE ANSBERT","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2482,"kind":"person","name":"Foley Todd","position":4,"cik":"0001473930","reported_name":"Foley Todd","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":5,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":6,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":7,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":8,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2487,"kind":"organization","name":"MPM BIOVENTURES 2018 (B), L.P.","position":9,"cik":"0001729504","reported_name":"MPM BIOVENTURES 2018 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2488,"kind":"organization","name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","position":10,"cik":"0001734817","reported_name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2026-08-31T22:25:04.000Z","date":"2026-08-31","kind":"sale","planned":false,"acquired":false,"shares":44259,"price":6.99,"value":309370.41,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F8","text":"The shares were sold as follows: 20,097 by BV 2014, 1,341 by BV 2014(B), 692 by AM BV2014, 20,626 by BV 2018, 1,096 by BV 2018(B) and 407 by AM BV2018."},{"field":"price","element":"transactionPricePerShare","label":"F9","text":"Price represents the weighted average sale price of the shares sold. The sale price ranged from $6.76 to $7.1626 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its respective pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F10","text":"The shares are held as follows: 1,921,425 by BV 2014, 128,155 by BV 2014(B), 66,136 by AM BV2014, 1,971,989 by BV 2018, 104,809 by BV 2018(B) and 38,920 by AM BV2018."}],"balance_after":4231434,"source":{"system":"sec-edgar","filing":"0001231919-26-001135","document":"form4-08312026_100852.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1134655/000123191926001135/form4-08312026_100852.xml","form_type":"4"}},{"id":672220,"issuer":{"id":2163,"kind":"organization","name":"Entrada Therapeutics, Inc.","symbol":"TRDA"},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2480,"kind":"person","name":"EVNIN LUKE","position":2,"cik":"0001134657","reported_name":"EVNIN LUKE","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2481,"kind":"person","name":"GADICKE ANSBERT","position":3,"cik":"0001134655","reported_name":"GADICKE ANSBERT","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2482,"kind":"person","name":"Foley Todd","position":4,"cik":"0001473930","reported_name":"Foley Todd","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":5,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":6,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":7,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":8,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2487,"kind":"organization","name":"MPM BIOVENTURES 2018 (B), L.P.","position":9,"cik":"0001729504","reported_name":"MPM BIOVENTURES 2018 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2488,"kind":"organization","name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","position":10,"cik":"0001734817","reported_name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2026-08-31T22:25:04.000Z","date":"2026-08-28","kind":"sale","planned":false,"acquired":false,"shares":3733,"price":7.01,"value":26168.33,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F5","text":"The shares were sold as follows: 1,695 by BV 2014, 113 by BV 2014(B), 58 by AM BV2014, 1,740 by BV 2018, 93 by BV 2018(B) and 34 by AM BV2018."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"Price represents the weighted average sale price of the shares sold. The sale price ranged from $6.95 to $7.24 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its respective pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F7","text":"The shares are held as follows: 1,941,522 by BV 2014, 129,496 by BV 2014(B), 66,828 by AM BV2014, 1,992,615 by BV 2018, 105,905 by BV 2018(B) and 39,327 by AM BV2018."}],"balance_after":4275693,"source":{"system":"sec-edgar","filing":"0001231919-26-001135","document":"form4-08312026_100852.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1134655/000123191926001135/form4-08312026_100852.xml","form_type":"4"}},{"id":672219,"issuer":{"id":2163,"kind":"organization","name":"Entrada Therapeutics, Inc.","symbol":"TRDA"},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2480,"kind":"person","name":"EVNIN LUKE","position":2,"cik":"0001134657","reported_name":"EVNIN LUKE","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2481,"kind":"person","name":"GADICKE ANSBERT","position":3,"cik":"0001134655","reported_name":"GADICKE ANSBERT","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2482,"kind":"person","name":"Foley Todd","position":4,"cik":"0001473930","reported_name":"Foley Todd","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":5,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":6,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":7,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":8,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2487,"kind":"organization","name":"MPM BIOVENTURES 2018 (B), L.P.","position":9,"cik":"0001729504","reported_name":"MPM BIOVENTURES 2018 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2488,"kind":"organization","name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","position":10,"cik":"0001734817","reported_name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2026-08-31T22:25:04.000Z","date":"2026-08-27","kind":"sale","planned":false,"acquired":false,"shares":38922,"price":7.2,"value":280238.4,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The shares were sold as follows: 17,674 by MPM BioVentures 2014, L.P. (\"BV 2014\"), 1,179 by MPM BioVentures 2014(B), L.P. (\"BV 2014(B)\"), 608 by MPM Asset Management Investors BV2014 LLC (\"AM BV2014\"), 18,139 by MPM BioVentures 2018, L.P. (\"BV 2018\"), 964 by MPM BioVentures 2018 (B), L.P. (\"BV 2018(B)\") and 358 by MPM Asset Management Investors BV2018 LLC (\"AM BV2018\"). MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC (\"BV2014 LLC\") are the direct and indirect general partners of BV 2014 and BV 2014(B). BV2014 LLC is the manager of AM BV2014. MPM BioVentures 2018 GP LLC and MPM BioVentures 2018 LLC (\"BV2018 LLC\") are the direct and indirect general partners of BV 2018 and BV 2018(B). BV 2018 LLC is the manager of AM BV2018. Messrs. Evnin, Foley and Gadicke are managing directors of BV 2014 LLC and BV 2018 LLC."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Price represents the weighted average sale price of the shares sold. The sale price ranged from $6.88 to $7.37 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The shares are held as follows: 1,943,217 by BV 2014, 129,609 by BV 2014(B), 66,886 by AM BV2014, 1,994,355 by BV 2018, 105,998 by BV 2018(B) and 39,361 by AM BV2018."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its respective pecuniary interest therein."}],"balance_after":4279426,"source":{"system":"sec-edgar","filing":"0001231919-26-001135","document":"form4-08312026_100852.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1134655/000123191926001135/form4-08312026_100852.xml","form_type":"4"}},{"id":675339,"issuer":{"id":2163,"kind":"organization","name":"Entrada Therapeutics, Inc.","symbol":"TRDA"},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2480,"kind":"person","name":"EVNIN LUKE","position":2,"cik":"0001134657","reported_name":"EVNIN LUKE","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2481,"kind":"person","name":"GADICKE ANSBERT","position":3,"cik":"0001134655","reported_name":"GADICKE ANSBERT","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2482,"kind":"person","name":"Foley Todd","position":4,"cik":"0001473930","reported_name":"Foley Todd","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":5,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":6,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":7,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":8,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2487,"kind":"organization","name":"MPM BIOVENTURES 2018 (B), L.P.","position":9,"cik":"0001729504","reported_name":"MPM BIOVENTURES 2018 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2488,"kind":"organization","name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","position":10,"cik":"0001734817","reported_name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2026-08-27T01:28:15.000Z","date":"2026-08-26","kind":"sale","planned":false,"acquired":false,"shares":14569,"price":7.06,"value":102857.14,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F8","text":"The shares were sold as follows: 6,615 by BV 2014, 441 by BV 2014(B), 228 by AM BV2014, 6,790 by BV 2018, 361 by BV 2018(B) and 134 by AM BV2018."},{"field":"price","element":"transactionPricePerShare","label":"F9","text":"Price represents the weighted average sale price of the shares sold. The sale price ranged from $6.97 to $7.55 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its respective pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F10","text":"The shares are held as follows: 1,960,891 by BV 2014, 130,788 by BV 2014(B), 67,494 by AM BV2014, 2,012,494 by BV 2018, 106,962 by BV 2018(B) and 39,719 by AM BV2018."}],"balance_after":4318348,"source":{"system":"sec-edgar","filing":"0001231919-26-001107","document":"form4-08272026_010802.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1134655/000123191926001107/form4-08272026_010802.xml","form_type":"4"}},{"id":675338,"issuer":{"id":2163,"kind":"organization","name":"Entrada Therapeutics, Inc.","symbol":"TRDA"},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2480,"kind":"person","name":"EVNIN LUKE","position":2,"cik":"0001134657","reported_name":"EVNIN LUKE","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2481,"kind":"person","name":"GADICKE ANSBERT","position":3,"cik":"0001134655","reported_name":"GADICKE ANSBERT","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2482,"kind":"person","name":"Foley Todd","position":4,"cik":"0001473930","reported_name":"Foley Todd","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":5,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":6,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":7,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":8,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2487,"kind":"organization","name":"MPM BIOVENTURES 2018 (B), L.P.","position":9,"cik":"0001729504","reported_name":"MPM BIOVENTURES 2018 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2488,"kind":"organization","name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","position":10,"cik":"0001734817","reported_name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2026-08-27T01:28:15.000Z","date":"2026-08-25","kind":"sale","planned":false,"acquired":false,"shares":26522,"price":7.54,"value":199975.88,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F5","text":"The shares were sold as follows: 12,043 by BV 2014, 803 by BV 2014(B), 415 by AM BV2014, 12,360 by BV 2018, 657 by BV 2018(B) and 244 by AM BV2018."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"Price represents the weighted average sale price of the shares sold. The sale price ranged from $7.28 to $7.6421 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its respective pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F7","text":"The shares are held as follows: 1,967,506 by BV 2014, 131,229 by BV 2014(B), 67,722 by AM BV2014, 2,019,284 by BV 2018, 107,323 by BV 2018(B) and 39,853 by AM BV2018."}],"balance_after":4332917,"source":{"system":"sec-edgar","filing":"0001231919-26-001107","document":"form4-08272026_010802.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1134655/000123191926001107/form4-08272026_010802.xml","form_type":"4"}},{"id":675337,"issuer":{"id":2163,"kind":"organization","name":"Entrada Therapeutics, Inc.","symbol":"TRDA"},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2480,"kind":"person","name":"EVNIN LUKE","position":2,"cik":"0001134657","reported_name":"EVNIN LUKE","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2481,"kind":"person","name":"GADICKE ANSBERT","position":3,"cik":"0001134655","reported_name":"GADICKE ANSBERT","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2482,"kind":"person","name":"Foley Todd","position":4,"cik":"0001473930","reported_name":"Foley Todd","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":5,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":6,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":7,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":8,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2487,"kind":"organization","name":"MPM BIOVENTURES 2018 (B), L.P.","position":9,"cik":"0001729504","reported_name":"MPM BIOVENTURES 2018 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2488,"kind":"organization","name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","position":10,"cik":"0001734817","reported_name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2026-08-27T01:28:15.000Z","date":"2026-08-24","kind":"sale","planned":false,"acquired":false,"shares":21623,"price":7.34,"value":158712.82,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The shares were sold as follows: 9,819 by MPM BioVentures 2014, L.P. (\"BV 2014\"), 655 by MPM BioVentures 2014(B), L.P. (\"BV 2014(B)\"), 338 by MPM Asset Management Investors BV2014 LLC (\"AM BV2014\"), 10,077 by MPM BioVentures 2018, L.P. (\"BV 2018\"), 535 by MPM BioVentures 2018 (B), L.P. (\"BV 2018(B)\") and 199 by MPM Asset Management Investors BV2018 LLC (\"AM BV2018\"). MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC (\"BV2014 LLC\") are the direct and indirect general partners of BV 2014 and BV 2014(B). BV2014 LLC is the manager of AM BV2014. MPM BioVentures 2018 GP LLC and MPM BioVentures 2018 LLC (\"BV2018 LLC\") are the direct and indirect general partners of BV 2018 and BV 2018(B). BV 2018 LLC is the manager of AM BV2018. Messrs. Evnin, Foley and Gadicke are managing directors of BV 2014 LLC and BV 2018 LLC."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Price represents the weighted average sale price of the shares sold. The sale price ranged from $7.0852 to $7.58 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The shares are held as follows: 1,979,549 by BV 2014, 132,032 by BV 2014(B), 68,137 by AM BV2014, 2,031,644 by BV 2018, 107,980 by BV 2018(B) and 40,097 by AM BV2018."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its respective pecuniary interest therein."}],"balance_after":4359439,"source":{"system":"sec-edgar","filing":"0001231919-26-001107","document":"form4-08272026_010802.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1134655/000123191926001107/form4-08272026_010802.xml","form_type":"4"}},{"id":979980,"issuer":{"id":7244,"kind":"organization","name":"Werewolf Therapeutics, Inc."},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"Former 10% Owner"}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":2,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"Former 10% Owner"}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":3,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"Former 10% Owner"}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":4,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"Former 10% Owner"}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"Former 10% Owner"}}],"security":"Common Stock","published_at":"2025-12-04T23:19:45.000Z","date":"2025-12-04","kind":"sale","planned":true,"acquired":false,"shares":83230,"price":0.97,"value":80733.1,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction effected pursuant to a plan established pursuant to Rule 10b5-1 dated September 24, 2025."},{"field":"shares","element":"transactionShares","label":"F9","text":"The shares were sold as follows: 5,714 by AM LLC, 36,101 by BV 2014, 2,408 by BV 2014(B), 1,243 by AM BV2014, 7,950 by MPM OIF and 29,814 by UBS Oncology."},{"field":"price","element":"transactionPricePerShare","label":"F10","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $0.92 to $1.0208 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the\nSecurities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC (\"BV LLC\") are the direct and indirect general partners of\nBV 2014 and BV 2014(B). BV LLC is the manager of AM BV2014. MPM Oncology Innovations Fund GP LLC (\"MPM OIF GP\") is the general partner of MPM OIF. MPM BioImpact LLC (\"BioImpact\") is the General Partner of Oncology Impact Fund (Cayman) Management L.P., the General Partner of UBS Oncology. Ansbert Gadicke is a member of AM LLC, a managing director of BV LLC, a manager of MPM OIF GP and the managing partner of BioImpact. Each Reporting Person disclaims beneficial ownership of\nthe securities except to the extent of his or its pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F11","text":"The shares are held as follows: 328,588 by AM LLC, 2,075,004 by BV 2014, 138,399 by BV 2014(B), 71,421 by AM BV2014, 454,866 by MPM OIF and 1,715,833 by UBS Oncology."}],"balance_after":4784111,"source":{"system":"sec-edgar","filing":"0001231919-25-000575","document":"form4-12042025_111239.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1609492/000123191925000575/form4-12042025_111239.xml","form_type":"4"}},{"id":979979,"issuer":{"id":7244,"kind":"organization","name":"Werewolf Therapeutics, Inc."},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"Former 10% Owner"}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":2,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"Former 10% Owner"}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":3,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"Former 10% Owner"}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":4,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"Former 10% Owner"}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"Former 10% Owner"}}],"security":"Common Stock","published_at":"2025-12-04T23:19:45.000Z","date":"2025-12-03","kind":"sale","planned":true,"acquired":false,"shares":57225,"price":0.87,"value":49785.75,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction effected pursuant to a plan established pursuant to Rule 10b5-1 dated September 24, 2025."},{"field":"shares","element":"transactionShares","label":"F6","text":"The shares were sold as follows: 3,929 by AM LLC, 24,821 by BV 2014, 1,656 by BV 2014(B), 854 by AM BV2014, 5,466 by MPM OIF and 20,499 by UBS Oncology."},{"field":"price","element":"transactionPricePerShare","label":"F7","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $0.82 to $0.9256 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the\nSecurities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC (\"BV LLC\") are the direct and indirect general partners of\nBV 2014 and BV 2014(B). BV LLC is the manager of AM BV2014. MPM Oncology Innovations Fund GP LLC (\"MPM OIF GP\") is the general partner of MPM OIF. MPM BioImpact LLC (\"BioImpact\") is the General Partner of Oncology Impact Fund (Cayman) Management L.P., the General Partner of UBS Oncology. Ansbert Gadicke is a member of AM LLC, a managing director of BV LLC, a manager of MPM OIF GP and the managing partner of BioImpact. Each Reporting Person disclaims beneficial ownership of\nthe securities except to the extent of his or its pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F8","text":"The shares are held as follows: 334,302 by AM LLC, 2,111,105 by BV 2014, 140,807 by BV 2014(B), 72,664 by AM BV2014, 462,816 by MPM OIF and 1,745,647 by UBS Oncology."}],"balance_after":4867341,"source":{"system":"sec-edgar","filing":"0001231919-25-000575","document":"form4-12042025_111239.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1609492/000123191925000575/form4-12042025_111239.xml","form_type":"4"}},{"id":979978,"issuer":{"id":7244,"kind":"organization","name":"Werewolf Therapeutics, Inc."},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"Former 10% Owner"}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":2,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"Former 10% Owner"}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":3,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"Former 10% Owner"}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":4,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"Former 10% Owner"}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"Former 10% Owner"}}],"security":"Common Stock","published_at":"2025-12-04T23:19:45.000Z","date":"2025-12-02","kind":"sale","planned":true,"acquired":false,"shares":59277,"price":0.89,"value":52756.53,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction effected pursuant to a plan established pursuant to Rule 10b5-1 dated September 24, 2025."},{"field":"shares","element":"transactionShares","label":"F2","text":"The shares were sold as follows: 4,070 by MPM Asset Management LLC (\"AM LLC\"), 25,712 by MPM BioVentures 2014, L.P. (\"BV 2014\"), 1,715 by MPM BioVentures 2014(B), L.P. (\"BV 2014(B)\"), 884 by MPM Asset Management Investors BV2014 LLC (\"AM\nBV2014\"), 5,662 by MPM Oncology Innovations Fund, L.P. (\"MPM OIF\") and 21,234 by UBS Oncology Impact Fund L.P. (\"UBS Oncology\")."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $0.852 to $0.9246 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the\nSecurities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC (\"BV LLC\") are the direct and indirect general partners of\nBV 2014 and BV 2014(B). BV LLC is the manager of AM BV2014. MPM Oncology Innovations Fund GP LLC (\"MPM OIF GP\") is the general partner of MPM OIF. MPM BioImpact LLC (\"BioImpact\") is the General Partner of Oncology Impact Fund (Cayman) Management L.P., the General Partner of UBS Oncology. Ansbert Gadicke is a member of AM LLC, a managing director of BV LLC, a manager of MPM OIF GP and the managing partner of BioImpact. Each Reporting Person disclaims beneficial ownership of\nthe securities except to the extent of his or its pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"The shares are held as follows: 338,231 by AM LLC, 2,135,926 by BV 2014, 142,463 by BV 2014(B), 73,518 by AM BV2014, 468,282 by MPM OIF and 1,766,146 by UBS Oncology."}],"balance_after":4924566,"source":{"system":"sec-edgar","filing":"0001231919-25-000575","document":"form4-12042025_111239.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1609492/000123191925000575/form4-12042025_111239.xml","form_type":"4"}},{"id":984820,"issuer":{"id":7244,"kind":"organization","name":"Werewolf Therapeutics, Inc."},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":2,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":3,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":4,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2025-12-01T23:12:45.000Z","date":"2025-12-01","kind":"sale","planned":true,"acquired":false,"shares":60917,"price":0.94,"value":57261.98,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction effected pursuant to a plan established pursuant to Rule 10b5-1 dated September 24, 2025."},{"field":"shares","element":"transactionShares","label":"F9","text":"The shares were sold as follows: 4,182 by AM LLC, 26,423 by BV 2014, 1,762 by BV 2014(B), 910 by AM BV2014, 5,819 by MPM OIF and 21,821 by UBS Oncology."},{"field":"price","element":"transactionPricePerShare","label":"F10","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $0.905 to $1.00 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the\nSecurities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC (\"BV LLC\") are the direct and indirect general partners of\nBV 2014 and BV 2014(B). BV LLC is the manager of AM BV2014. MPM Oncology Innovations Fund GP LLC (\"MPM OIF GP\") is the general partner of MPM OIF. MPM BioImpact LLC (\"BioImpact\") is the General Partner of Oncology Impact Fund (Cayman) Management L.P., the General Partner of UBS Oncology. Ansbert Gadicke is a member of AM LLC, a managing director of BV LLC, a manager of MPM OIF GP and the managing partner of BioImpact. Each Reporting Person disclaims beneficial ownership of\nthe securities except to the extent of his or its pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F11","text":"The shares are held as follows: 342,301 by AM LLC, 2,161,638 by BV 2014, 144,178 by BV 2014(B), 74,402 by AM BV2014, 473,944 by MPM OIF and 1,787,380 by UBS Oncology."}],"balance_after":4983843,"source":{"system":"sec-edgar","filing":"0001231919-25-000565","document":"form4-12012025_111237.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1609492/000123191925000565/form4-12012025_111237.xml","form_type":"4"}},{"id":984819,"issuer":{"id":7244,"kind":"organization","name":"Werewolf Therapeutics, Inc."},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":2,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":3,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":4,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2025-12-01T23:12:45.000Z","date":"2025-11-28","kind":"sale","planned":true,"acquired":false,"shares":20277,"price":0.99,"value":20074.23,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction effected pursuant to a plan established pursuant to Rule 10b5-1 dated September 24, 2025."},{"field":"shares","element":"transactionShares","label":"F6","text":"The shares were sold as follows: 1,392 by AM LLC, 8,795 by BV 2014, 587 by BV 2014(B), 303 by AM BV2014, 1,937 by MPM OIF and 7,263 by UBS Oncology."},{"field":"price","element":"transactionPricePerShare","label":"F7","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $0.9681 to $1.01 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the\nSecurities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC (\"BV LLC\") are the direct and indirect general partners of\nBV 2014 and BV 2014(B). BV LLC is the manager of AM BV2014. MPM Oncology Innovations Fund GP LLC (\"MPM OIF GP\") is the general partner of MPM OIF. MPM BioImpact LLC (\"BioImpact\") is the General Partner of Oncology Impact Fund (Cayman) Management L.P., the General Partner of UBS Oncology. Ansbert Gadicke is a member of AM LLC, a managing director of BV LLC, a manager of MPM OIF GP and the managing partner of BioImpact. Each Reporting Person disclaims beneficial ownership of\nthe securities except to the extent of his or its pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F8","text":"The shares are held as follows: 346,483 by AM LLC, 2,188,061 by BV 2014, 145,940 by BV 2014(B), 75,312 by AM BV2014, 479,763 by MPM OIF and 1,809,201 by UBS Oncology"}],"balance_after":5044760,"source":{"system":"sec-edgar","filing":"0001231919-25-000565","document":"form4-12012025_111237.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1609492/000123191925000565/form4-12012025_111237.xml","form_type":"4"}},{"id":984818,"issuer":{"id":7244,"kind":"organization","name":"Werewolf Therapeutics, Inc."},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":2,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":3,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":4,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2025-12-01T23:12:45.000Z","date":"2025-11-26","kind":"sale","planned":true,"acquired":false,"shares":60733,"price":0.98,"value":59518.34,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction effected pursuant to a plan established pursuant to Rule 10b5-1 dated September 24, 2025."},{"field":"shares","element":"transactionShares","label":"F2","text":"The shares were sold as follows: 4,170 by MPM Asset Management LLC (\"AM LLC\"), 26,343 by MPM BioVentures 2014, L.P. (\"BV 2014\"), 1,757 by MPM BioVentures 2014(B), L.P. (\"BV 2014(B)\"), 907 by MPM Asset Management Investors BV2014 LLC (\"AM\nBV2014\"), 5,801 by MPM Oncology Innovations Fund, L.P. (\"MPM OIF\") and 21,755 by UBS Oncology Impact Fund L.P. (\"UBS Oncology\")."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $0.9328 to $1.01 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the\nSecurities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC (\"BV LLC\") are the direct and indirect general partners of\nBV 2014 and BV 2014(B). BV LLC is the manager of AM BV2014. MPM Oncology Innovations Fund GP LLC (\"MPM OIF GP\") is the general partner of MPM OIF. MPM BioImpact LLC (\"BioImpact\") is the General Partner of Oncology Impact Fund (Cayman) Management L.P., the General Partner of UBS Oncology. Ansbert Gadicke is a member of AM LLC, a managing director of BV LLC, a manager of MPM OIF GP and the managing partner of BioImpact. Each Reporting Person disclaims beneficial ownership of\nthe securities except to the extent of his or its pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"The shares are held as follows: 347,875 by AM LLC, 2,196,856 by BV 2014, 146,527 by BV 2014(B), 75,615 by AM BV2014, 481,700 by MPM OIF and 1,816,464 by UBS Oncology"}],"balance_after":5065037,"source":{"system":"sec-edgar","filing":"0001231919-25-000565","document":"form4-12012025_111237.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1609492/000123191925000565/form4-12012025_111237.xml","form_type":"4"}},{"id":988364,"issuer":{"id":7244,"kind":"organization","name":"Werewolf Therapeutics, Inc."},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":2,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":3,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":4,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2025-11-25T23:04:42.000Z","date":"2025-11-25","kind":"sale","planned":true,"acquired":false,"shares":42533,"price":0.92,"value":39130.36,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction effected pursuant to a plan established pursuant to Rule 10b5-1 dated September 24, 2025."},{"field":"shares","element":"transactionShares","label":"F9","text":"The shares were sold as follows: 2,920 by AM LLC, 18,449 by BV 2014, 1,230 by BV 2014(B), 635 by AM BV2014, 4,063 by MPM OIF and 15,236 by UBS Oncology."},{"field":"price","element":"transactionPricePerShare","label":"F10","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $0.90 to $0.99 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the\nSecurities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC (\"BV LLC\") are the direct and indirect general partners of\nBV 2014 and BV 2014(B). BV LLC is the manager of AM BV2014. MPM Oncology Innovations Fund GP LLC (\"MPM OIF GP\") is the general partner of MPM OIF. MPM BioImpact LLC (\"BioImpact\") is the General Partner of Oncology Impact Fund (Cayman) Management L.P., the General Partner of UBS Oncology. Ansbert Gadicke is a member of AM LLC, a managing director of BV LLC, a manager of MPM OIF GP and the managing partner of BioImpact. Each Reporting Person disclaims beneficial ownership of\nthe securities except to the extent of his or its pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F11","text":"The shares are held as follows: 352,045 by AM LLC, 2,223,199 by BV 2014, 148,284 by BV 2014(B), 76,522 by AM BV2014, 487,501 by MPM OIF and 1,838,219 by UBS Oncology."}],"balance_after":5125770,"source":{"system":"sec-edgar","filing":"0001231919-25-000551","document":"form4-11252025_111135.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1609492/000123191925000551/form4-11252025_111135.xml","form_type":"4"}},{"id":988363,"issuer":{"id":7244,"kind":"organization","name":"Werewolf Therapeutics, Inc."},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":2,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":3,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":4,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2025-11-25T23:04:42.000Z","date":"2025-11-24","kind":"sale","planned":true,"acquired":false,"shares":88802,"price":0.98,"value":87025.96,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction effected pursuant to a plan established pursuant to Rule 10b5-1 dated September 24, 2025."},{"field":"shares","element":"transactionShares","label":"F6","text":"The shares were sold as follows: 6,097 by AM LLC, 38,518 by BV 2014, 2,569 by BV 2014(B), 1,325 by AM BV2014, 8,483 by MPM OIF and 31,810 by UBS Oncology."},{"field":"price","element":"transactionPricePerShare","label":"F7","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $0.8733 to $1.03 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the\nSecurities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC (\"BV LLC\") are the direct and indirect general partners of\nBV 2014 and BV 2014(B). BV LLC is the manager of AM BV2014. MPM Oncology Innovations Fund GP LLC (\"MPM OIF GP\") is the general partner of MPM OIF. MPM BioImpact LLC (\"BioImpact\") is the General Partner of Oncology Impact Fund (Cayman) Management L.P., the General Partner of UBS Oncology. Ansbert Gadicke is a member of AM LLC, a managing director of BV LLC, a manager of MPM OIF GP and the managing partner of BioImpact. Each Reporting Person disclaims beneficial ownership of\nthe securities except to the extent of his or its pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F8","text":"The shares are held as follows: 354,965 by AM LLC, 2,241,648 by BV 2014, 149,514 by BV 2014(B),\n77,157 by AM BV2014, 491,564 by MPM OIF and 1,853,455 by UBS Oncology."}],"balance_after":5168303,"source":{"system":"sec-edgar","filing":"0001231919-25-000551","document":"form4-11252025_111135.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1609492/000123191925000551/form4-11252025_111135.xml","form_type":"4"}},{"id":988362,"issuer":{"id":7244,"kind":"organization","name":"Werewolf Therapeutics, Inc."},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":2,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":3,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":4,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2025-11-25T23:04:42.000Z","date":"2025-11-21","kind":"sale","planned":true,"acquired":false,"shares":64331,"price":0.83,"value":53394.73,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction effected pursuant to a plan established pursuant to Rule 10b5-1 dated September 24, 2025."},{"field":"shares","element":"transactionShares","label":"F2","text":"The shares were sold as follows: 4,417 by MPM Asset Management LLC (\"AM LLC\"), 27,904 by MPM BioVentures 2014, L.P. (\"BV 2014\"), 1,861 by MPM BioVentures 2014(B), L.P. (\"BV 2014(B)\"), 960 by MPM Asset Management Investors BV2014 LLC (\"AM\nBV2014\"), 6,145 by MPM Oncology Innovations Fund, L.P. (\"MPM OIF\") and 23,044 by UBS Oncology Impact Fund L.P. (\"UBS Oncology\")."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $0.80 to $0.8861 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the\nSecurities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC (\"BV LLC\") are the direct and indirect general partners of\nBV 2014 and BV 2014(B). BV LLC is the manager of AM BV2014. MPM Oncology Innovations Fund GP LLC (\"MPM OIF GP\") is the general partner of MPM OIF. MPM BioImpact LLC (\"BioImpact\") is the General Partner of Oncology Impact Fund (Cayman) Management L.P., the General Partner of UBS Oncology. Ansbert Gadicke is a member of AM LLC, a managing director of BV LLC, a manager of MPM OIF GP and the managing partner of BioImpact. Each Reporting Person disclaims beneficial ownership of\nthe securities except to the extent of his or its pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"The shares are held as follows: 361,062 by AM LLC, 2,280,166 by BV 2014, 152,083 by BV 2014(B), 78,482 by AM BV2014, 500,047 by MPM OIF and 1,885,265 by UBS Oncology."}],"balance_after":5257105,"source":{"system":"sec-edgar","filing":"0001231919-25-000551","document":"form4-11252025_111135.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1609492/000123191925000551/form4-11252025_111135.xml","form_type":"4"}},{"id":992283,"issuer":{"id":7244,"kind":"organization","name":"Werewolf Therapeutics, Inc."},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":2,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":3,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":4,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2025-11-20T22:51:31.000Z","date":"2025-11-20","kind":"sale","planned":true,"acquired":false,"shares":41152,"price":0.89,"value":36625.28,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction effected pursuant to a plan established pursuant to Rule 10b5-1 dated September 24, 2025."},{"field":"shares","element":"transactionShares","label":"F9","text":"The shares were sold as follows: 2,825 by AM LLC, 17,850 by BV 2014, 1,191 by BV 2014(B), 614 by AM BV2014, 3,931 by MPM OIF and 14,741 by UBS Oncology."},{"field":"price","element":"transactionPricePerShare","label":"F10","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $0.8506 to $0.9556 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the\nSecurities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC (\"BV LLC\") are the direct and indirect general partners of\nBV 2014 and BV 2014(B). BV LLC is the manager of AM BV2014. MPM Oncology Innovations Fund GP LLC (\"MPM OIF GP\") is the general partner of MPM OIF. MPM BioImpact LLC (\"BioImpact\") is the General Partner of Oncology Impact Fund (Cayman) Management L.P., the General Partner of UBS Oncology. Ansbert Gadicke is a member of AM LLC, a managing director of BV LLC, a manager of MPM OIF GP and the managing partner of BioImpact. Each Reporting Person disclaims beneficial ownership of\nthe securities except to the extent of his or its pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F11","text":"The shares are held as follows: 365,479 by AM LLC, 2,308,070 by BV 2014, 153,944 by BV 2014(B), 79,442 by AM BV2014, 506,192 by MPM OIF and 1,908,309 by UBS Oncology."}],"balance_after":5321436,"source":{"system":"sec-edgar","filing":"0001231919-25-000534","document":"form4-11202025_101124.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1609492/000123191925000534/form4-11202025_101124.xml","form_type":"4"}},{"id":992282,"issuer":{"id":7244,"kind":"organization","name":"Werewolf Therapeutics, Inc."},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":2,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":3,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":4,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2025-11-20T22:51:31.000Z","date":"2025-11-19","kind":"sale","planned":true,"acquired":false,"shares":66324,"price":0.94,"value":62344.56,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction effected pursuant to a plan established pursuant to Rule 10b5-1 dated September 24, 2025."},{"field":"shares","element":"transactionShares","label":"F6","text":"The shares were sold as follows: 4,554 by AM LLC, 28,768 by BV 2014, 1,919 by BV 2014(B), 990 by AM BV2014, 6,335 by MPM OIF and 23,758 by UBS Oncology."},{"field":"price","element":"transactionPricePerShare","label":"F7","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $0.901 to $0.9806 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the\nSecurities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC (\"BV LLC\") are the direct and indirect general partners of\nBV 2014 and BV 2014(B). BV LLC is the manager of AM BV2014. MPM Oncology Innovations Fund GP LLC (\"MPM OIF GP\") is the general partner of MPM OIF. MPM BioImpact LLC (\"BioImpact\") is the General Partner of Oncology Impact Fund (Cayman) Management L.P., the General Partner of UBS Oncology. Ansbert Gadicke is a member of AM LLC, a managing director of BV LLC, a manager of MPM OIF GP and the managing partner of BioImpact. Each Reporting Person disclaims beneficial ownership of\nthe securities except to the extent of his or its pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F8","text":"The shares are held as follows: 368,304 by AM LLC, 2,325,920 by BV 2014, 155,135 by BV 2014(B), 80,056 by AM BV2014, 510,123 by MPM OIF and 1,923,050 by UBS Oncology."}],"balance_after":5362588,"source":{"system":"sec-edgar","filing":"0001231919-25-000534","document":"form4-11202025_101124.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1609492/000123191925000534/form4-11202025_101124.xml","form_type":"4"}},{"id":992281,"issuer":{"id":7244,"kind":"organization","name":"Werewolf Therapeutics, Inc."},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":2,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":3,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":4,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2025-11-20T22:51:31.000Z","date":"2025-11-18","kind":"sale","planned":true,"acquired":false,"shares":52627,"price":0.93,"value":48943.11,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction effected pursuant to a plan established pursuant to Rule 10b5-1 dated September 24, 2025."},{"field":"shares","element":"transactionShares","label":"F2","text":"The shares were sold as follows: 3,613 by MPM Asset Management LLC (\"AM LLC\"), 22,827 by MPM BioVentures 2014, L.P. (\"BV 2014\"), 1,523 by MPM BioVentures 2014(B), L.P. (\"BV 2014(B)\"), 786 by MPM Asset Management Investors BV2014 LLC (\"AM\nBV2014\"), 5,027 by MPM Oncology Innovations Fund, L.P. (\"MPM OIF\") and 18,851 by UBS Oncology Impact Fund L.P. (\"UBS Oncology\")."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $0.8902 to $0.9601 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the\nSecurities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC (\"BV LLC\") are the direct and indirect general partners of\nBV 2014 and BV 2014(B). BV LLC is the manager of AM BV2014. MPM Oncology Innovations Fund GP LLC (\"MPM OIF GP\") is the general partner of MPM OIF. MPM BioImpact LLC (\"BioImpact\") is the General Partner of Oncology Impact Fund (Cayman) Management L.P., the General Partner of UBS Oncology. Ansbert Gadicke is a member of AM LLC, a managing director of BV LLC, a manager of MPM OIF GP and the managing partner of BioImpact. Each Reporting Person disclaims beneficial ownership of\nthe securities except to the extent of his or its pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"The shares are held as follows: 372,858 by AM LLC, 2,354,688 by BV 2014, 157,054 by BV 2014(B), 81,046 by AM BV2014, 516,458 by MPM OIF and 1,946,808 by UBS Oncology."}],"balance_after":5428912,"source":{"system":"sec-edgar","filing":"0001231919-25-000534","document":"form4-11202025_101124.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1609492/000123191925000534/form4-11202025_101124.xml","form_type":"4"}},{"id":997508,"issuer":{"id":7244,"kind":"organization","name":"Werewolf Therapeutics, Inc."},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":2,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":3,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":4,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2025-11-18T00:22:09.000Z","date":"2025-11-17","kind":"sale","planned":true,"acquired":false,"shares":57061,"price":0.95,"value":54207.95,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction effected pursuant to a plan established pursuant to Rule 10b5-1 dated September 24, 2025."},{"field":"shares","element":"transactionShares","label":"F9","text":"The shares were sold as follows: 3,918 by AM LLC, 24,750 by BV 2014, 1,651 by BV 2014(B), 851 by AM BV2014, 5,451 by MPM OIF and 20,440 by UBS Oncology."},{"field":"price","element":"transactionPricePerShare","label":"F10","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $0.9183 to $0.99 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the\nSecurities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC (\"BV LLC\") are the direct and indirect general partners of\nBV 2014 and BV 2014(B). BV LLC is the manager of AM BV2014. MPM Oncology Innovations Fund GP LLC (\"MPM OIF GP\") is the general partner of MPM OIF. MPM BioImpact LLC (\"BioImpact\") is the General Partner of Oncology Impact Fund (Cayman) Management L.P., the General Partner of UBS Oncology. Ansbert Gadicke is a member of AM LLC, a managing director of BV LLC, a manager of MPM OIF GP and the managing partner of BioImpact. Each Reporting Person disclaims beneficial ownership of\nthe securities except to the extent of his or its pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F11","text":"The shares are held as follows: 376,471 by AM LLC, 2,377,515 by BV 2014, 158,577 by BV 2014(B), 81,832 by AM BV2014, 521,485 by MPM OIF and 1,965,659 by UBS Oncology."}],"balance_after":5481539,"source":{"system":"sec-edgar","filing":"0001231919-25-000509","document":"form4-11182025_121101.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1609492/000123191925000509/form4-11182025_121101.xml","form_type":"4"}},{"id":997507,"issuer":{"id":7244,"kind":"organization","name":"Werewolf Therapeutics, Inc."},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":2,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":3,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":4,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2025-11-18T00:22:09.000Z","date":"2025-11-14","kind":"sale","planned":true,"acquired":false,"shares":61640,"price":0.93,"value":57325.2,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction effected pursuant to a plan established pursuant to Rule 10b5-1 dated September 24, 2025."},{"field":"shares","element":"transactionShares","label":"F6","text":"The shares were sold as follows: 4,232 by AM LLC, 26,736 by BV 2014, 1,783 by BV 2014(B), 921 by AM BV2014, 5,888 by MPM OIF and 22,080 by UBS Oncology."},{"field":"price","element":"transactionPricePerShare","label":"F7","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $0.895 to $0.9551 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the\nSecurities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC (\"BV LLC\") are the direct and indirect general partners of\nBV 2014 and BV 2014(B). BV LLC is the manager of AM BV2014. MPM Oncology Innovations Fund GP LLC (\"MPM OIF GP\") is the general partner of MPM OIF. MPM BioImpact LLC (\"BioImpact\") is the General Partner of Oncology Impact Fund (Cayman) Management L.P., the General Partner of UBS Oncology. Ansbert Gadicke is a member of AM LLC, a managing director of BV LLC, a manager of MPM OIF GP and the managing partner of BioImpact. Each Reporting Person disclaims beneficial ownership of\nthe securities except to the extent of his or its pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F8","text":"The shares are held as follows: 380,389 by AM LLC, 2,402,265 by BV 2014, 160,228 by BV 2014(B), 82,683 by AM BV2014, 526,936 by MPM OIF and 1,986,099 by UBS Oncology."}],"balance_after":5538600,"source":{"system":"sec-edgar","filing":"0001231919-25-000509","document":"form4-11182025_121101.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1609492/000123191925000509/form4-11182025_121101.xml","form_type":"4"}},{"id":997506,"issuer":{"id":7244,"kind":"organization","name":"Werewolf Therapeutics, Inc."},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":2,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":3,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":4,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2025-11-18T00:22:09.000Z","date":"2025-11-13","kind":"sale","planned":true,"acquired":false,"shares":90951,"price":0.98,"value":89131.98,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction effected pursuant to a plan established pursuant to Rule 10b5-1 dated September 24, 2025."},{"field":"shares","element":"transactionShares","label":"F2","text":"The shares were sold as follows: 6,244 by MPM Asset Management LLC (\"AM LLC\"), 39,450 by MPM BioVentures 2014, L.P. (\"BV 2014\"), 2,631 by MPM BioVentures 2014(B), L.P. (\"BV 2014(B)\"), 1,359 by MPM Asset Management Investors BV2014 LLC (\"AM\nBV2014\"), 8,688 by MPM Oncology Innovations Fund, L.P. (\"MPM OIF\") and 32,579 by UBS Oncology Impact Fund L.P. (\"UBS Oncology\")."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $0.918 to $1.07 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the\nSecurities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC (\"BV LLC\") are the direct and indirect general partners of\nBV 2014 and BV 2014(B). BV LLC is the manager of AM BV2014. MPM Oncology Innovations Fund GP LLC (\"MPM OIF GP\") is the general partner of MPM OIF. MPM BioImpact LLC (\"BioImpact\") is the General Partner of Oncology Impact Fund (Cayman) Management L.P., the General Partner of UBS Oncology. Ansbert Gadicke is a member of AM LLC, a managing director of BV LLC, a manager of MPM OIF GP and the managing partner of BioImpact. Each Reporting Person disclaims beneficial ownership of\nthe securities except to the extent of his or its pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"The shares are held as follows: 384,621 by AM LLC, 2,429,001 by BV 2014, 162,011 by BV 2014(B), 83,604 by AM BV2014, 532,824 by MPM OIF and 2,008,179 by UBS Oncology."}],"balance_after":5600240,"source":{"system":"sec-edgar","filing":"0001231919-25-000509","document":"form4-11182025_121101.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1609492/000123191925000509/form4-11182025_121101.xml","form_type":"4"}},{"id":1001439,"issuer":{"id":7244,"kind":"organization","name":"Werewolf Therapeutics, Inc."},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":2,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":3,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":4,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2025-11-13T00:32:59.000Z","date":"2025-11-12","kind":"sale","planned":true,"acquired":false,"shares":40669,"price":1.09,"value":44329.21,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction effected pursuant to a plan established pursuant to Rule 10b5-1 dated September 24, 2025."},{"field":"shares","element":"transactionShares","label":"F12","text":"The shares were sold as follows: 2,792 by AM LLC, 17,640 by BV 2014, 1,177 by BV 2014(B), 607 by AM BV2014, 3,885 by MPM OIF and 14,568 by UBS Oncology."},{"field":"price","element":"transactionPricePerShare","label":"F13","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.065 to $1.145 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC (\"BV LLC\") are the direct and indirect general partners of\nBV 2014 and BV 2014(B). BV LLC is the manager of AM BV2014. MPM Oncology Innovations Fund GP LLC (\"MPM OIF GP\") is the general partner of MPM OIF. MPM BioImpact LLC (\"BioImpact\") is the General Partner of Oncology Impact Fund (Cayman) Management L.P., the General Partner of UBS Oncology. Ansbert Gadicke is a member of AM LLC, a managing director of BV LLC, a manager of MPM OIF GP and the managing partner of BioImpact. Each Reporting Person disclaims beneficial ownership of\nthe securities except to the extent of his or its pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F14","text":"The shares are held as follows: 390,865 by AM LLC, 2,468,451 by BV 2014, 164,642 by BV 2014(B), 84,963 by AM BV2014, 541,512 by MPM OIF and 2,040,758 by UBS Oncology."}],"balance_after":5691191,"source":{"system":"sec-edgar","filing":"0001231919-25-000461","document":"form4-11132025_121151.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1609492/000123191925000461/form4-11132025_121151.xml","form_type":"4"}},{"id":1001438,"issuer":{"id":7244,"kind":"organization","name":"Werewolf Therapeutics, Inc."},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":2,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":3,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":4,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2025-11-13T00:32:59.000Z","date":"2025-11-11","kind":"sale","planned":true,"acquired":false,"shares":55810,"price":1.14,"value":63623.4,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction effected pursuant to a plan established pursuant to Rule 10b5-1 dated September 24, 2025."},{"field":"shares","element":"transactionShares","label":"F9","text":"The shares were sold as follows: 3,832 by AM LLC, 24,208 by BV 2014, 1,615 by BV 2014(B), 832 by AM BV2014, 5,331 by MPM OIF and 19,992 by UBS Oncology."},{"field":"price","element":"transactionPricePerShare","label":"F10","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.115 to $1.17 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the\nSecurities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC (\"BV LLC\") are the direct and indirect general partners of\nBV 2014 and BV 2014(B). BV LLC is the manager of AM BV2014. MPM Oncology Innovations Fund GP LLC (\"MPM OIF GP\") is the general partner of MPM OIF. MPM BioImpact LLC (\"BioImpact\") is the General Partner of Oncology Impact Fund (Cayman) Management L.P., the General Partner of UBS Oncology. Ansbert Gadicke is a member of AM LLC, a managing director of BV LLC, a manager of MPM OIF GP and the managing partner of BioImpact. Each Reporting Person disclaims beneficial ownership of\nthe securities except to the extent of his or its pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F11","text":"The shares are held as follows: 393,657 by AM LLC, 2,486,091 by BV 2014, 165,819 by BV 2014(B), 85,570 by AM BV2014, 545,397 by MPM OIF and 2,055,326 by UBS Oncology."}],"balance_after":5731860,"source":{"system":"sec-edgar","filing":"0001231919-25-000461","document":"form4-11132025_121151.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1609492/000123191925000461/form4-11132025_121151.xml","form_type":"4"}},{"id":1001437,"issuer":{"id":7244,"kind":"organization","name":"Werewolf Therapeutics, Inc."},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":2,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":3,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":4,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2025-11-13T00:32:59.000Z","date":"2025-11-10","kind":"sale","planned":true,"acquired":false,"shares":48570,"price":1.18,"value":57312.6,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction effected pursuant to a plan established pursuant to Rule 10b5-1 dated September 24, 2025."},{"field":"shares","element":"transactionShares","label":"F6","text":"The shares were sold as follows: 3,335 by AM LLC, 21,067 by BV 2014, 1,405 by BV 2014(B), 725 by AM BV2014, 4,640 by MPM OIF and 17,398 by UBS Oncology."},{"field":"price","element":"transactionPricePerShare","label":"F7","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.145 to $1.21 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the\nSecurities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC (\"BV LLC\") are the direct and indirect general partners of\nBV 2014 and BV 2014(B). BV LLC is the manager of AM BV2014. MPM Oncology Innovations Fund GP LLC (\"MPM OIF GP\") is the general partner of MPM OIF. MPM BioImpact LLC (\"BioImpact\") is the General Partner of Oncology Impact Fund (Cayman) Management L.P., the General Partner of UBS Oncology. Ansbert Gadicke is a member of AM LLC, a managing director of BV LLC, a manager of MPM OIF GP and the managing partner of BioImpact. Each Reporting Person disclaims beneficial ownership of\nthe securities except to the extent of his or its pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F8","text":"The shares are held as follows: 397,489 by AM LLC, 2,510,299 by BV 2014, 167,434 by BV 2014(B), 86,402 by AM BV2014, 550,728 by MPM OIF and 2,075,318 by UBS Oncology."}],"balance_after":5787670,"source":{"system":"sec-edgar","filing":"0001231919-25-000461","document":"form4-11132025_121151.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1609492/000123191925000461/form4-11132025_121151.xml","form_type":"4"}},{"id":1001436,"issuer":{"id":7244,"kind":"organization","name":"Werewolf Therapeutics, Inc."},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":2,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":3,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":4,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2025-11-13T00:32:59.000Z","date":"2025-11-07","kind":"sale","planned":true,"acquired":false,"shares":68480,"price":1.11,"value":76012.8,"ownership":{"direct":false,"nature":"See Footnotes"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction effected pursuant to a plan established pursuant to Rule 10b5-1 dated September 24, 2025."},{"field":"shares","element":"transactionShares","label":"F2","text":"The shares were sold as follows: 4,702 by MPM Asset Management LLC (\"AM LLC\"), 29,704 by MPM BioVentures 2014, L.P. (\"BV 2014\"), 1,981 by MPM BioVentures 2014(B), L.P. (\"BV 2014(B)\"), 1,022 by MPM Asset Management Investors BV2014 LLC (\"AM\nBV2014\"), 6,541 by MPM Oncology Innovations Fund, L.P. (\"MPM OIF\") and 24,530 by UBS Oncology Impact Fund L.P. (\"UBS Oncology\")."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.075 to $1.188 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the\nSecurities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC (\"BV LLC\") are the direct and indirect general partners of\nBV 2014 and BV 2014(B). BV LLC is the manager of AM BV2014. MPM Oncology Innovations Fund GP LLC (\"MPM OIF GP\") is the general partner of MPM OIF. MPM BioImpact LLC (\"BioImpact\") is the General Partner of Oncology Impact Fund (Cayman) Management L.P., the General Partner of UBS Oncology. Ansbert Gadicke is a member of AM LLC, a managing director of BV LLC, a manager of MPM OIF GP and the managing partner of BioImpact. Each Reporting Person disclaims beneficial ownership of\nthe securities except to the extent of his or its pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"The shares are held as follows: 400,824 by AM LLC, 2,531,366 by BV 2014, 168,839 by BV 2014(B), 87,127 by AM BV2014, 555,368 by MPM OIF and 2,092,716 by UBS Oncology."}],"balance_after":5836240,"source":{"system":"sec-edgar","filing":"0001231919-25-000461","document":"form4-11132025_121151.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1609492/000123191925000461/form4-11132025_121151.xml","form_type":"4"}},{"id":1005580,"issuer":{"id":7244,"kind":"organization","name":"Werewolf Therapeutics, Inc."},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":2,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":3,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":4,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2025-11-07T00:41:49.000Z","date":"2025-11-06","kind":"sale","planned":true,"acquired":false,"shares":54452,"price":1.21,"value":65886.92,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction effected pursuant to a plan established pursuant to Rule 10b5-1 dated September 24, 2025."},{"field":"shares","element":"transactionShares","label":"F9","text":"The shares were sold as follows: 3,738 by AM LLC, 23,619 by BV 2014, 1,575 by BV 2014(B), 814 by AM BV2014, 5,201 by MPM OIF and 19,505 by UBS Oncology."},{"field":"price","element":"transactionPricePerShare","label":"F10","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.185 to $1.27 inclusive.  The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the\nSecurities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F11","text":"The shares are held as follows: 405,526 by AM LLC, 2,561,070 by BV 2014, 170,820 by BV 2014(B), 88,149 by AM BV2014, 561,909 by MPM OIF and 2,117,246 by UBS Oncology."}],"balance_after":5904720,"source":{"system":"sec-edgar","filing":"0001231919-25-000441","document":"form4-11072025_121141.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1609492/000123191925000441/form4-11072025_121141.xml","form_type":"4"}},{"id":1005579,"issuer":{"id":7244,"kind":"organization","name":"Werewolf Therapeutics, Inc."},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":2,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":3,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":4,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2025-11-07T00:41:49.000Z","date":"2025-11-05","kind":"sale","planned":true,"acquired":false,"shares":47950,"price":1.22,"value":58499.0,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction effected pursuant to a plan established pursuant to Rule 10b5-1 dated September 24, 2025."},{"field":"shares","element":"transactionShares","label":"F6","text":"The shares were sold as follows: 3,292 by AM LLC, 20,798 by BV 2014, 1,387 by BV 2014(B), 717 by AM BV2014, 4,580 by MPM OIF and 17,176 by UBS Oncology."},{"field":"price","element":"transactionPricePerShare","label":"F7","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.19 to $1.25 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the\nSecurities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F8","text":"The shares are held as follows: 409,264 by AM LLC, 2,584,689 by BV 2014, 172,395 by BV 2014(B), 88,963 by AM BV2014, 567,110 by MPM OIF and 2,136,751 by UBS Oncology."}],"balance_after":5959172,"source":{"system":"sec-edgar","filing":"0001231919-25-000441","document":"form4-11072025_121141.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1609492/000123191925000441/form4-11072025_121141.xml","form_type":"4"}},{"id":1005578,"issuer":{"id":7244,"kind":"organization","name":"Werewolf Therapeutics, Inc."},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":2,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":3,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":4,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2025-11-07T00:41:49.000Z","date":"2025-11-04","kind":"sale","planned":true,"acquired":false,"shares":140488,"price":1.22,"value":171395.36,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction effected pursuant to a plan established pursuant to Rule 10b5-1 dated September 24, 2025."},{"field":"shares","element":"transactionShares","label":"F2","text":". The shares were sold as follows: 9,645 by MPM Asset Management LLC (\"AM LLC\"), 60,937 by MPM BioVentures 2014, L.P. (\"BV 2014\"), 4,064 by MPM BioVentures 2014(B), L.P. (BV 2014(B), 2,098 by MPM Asset Management Investors BV2014 LLC (\"AM\nBV2014\"), 13,420 by MPM Oncology Innovations Fund, L.P. (\"MPM OIF\") and 50,324 by UBS Oncology Impact Fund L.P. (\"UBS Oncology\"). MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC (\"BV LLC\") are the direct and indirect general partners of\nBV 2014 and BV 2014(B). BV LLC is the manager of AM BV2014. MPM Oncology Innovations Fund GP LLC (\"MPM OIF GP\") is the general partner of MPM OIF. Ansbert Gadicke is a member of AM LLC, a managing director of BV LLC and a manager of MPM OIF\nGP. Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its pecuniary interest therein."},{"field":"shares","element":"transactionShares","label":"F3","text":"MPM BioImpact LLC (\"BioImpact\") is the General Partner of Oncology Impact Fund (Cayman) Management L.P., the General Partner of UBS Oncology. Ansbert Gadicke is the managing partner of BioImpact. Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its pecuniary interest therein."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.17 to $1.30 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"The shares are held as follows: 412,556 by AM LLC, 2,605,487 by BV 2014, 173,782 by BV 2014(B), 89,680 by AM BV2014, 571,690 by MPM OIF and 2,153,927 by UBS Oncology."}],"balance_after":6007122,"source":{"system":"sec-edgar","filing":"0001231919-25-000441","document":"form4-11072025_121141.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1609492/000123191925000441/form4-11072025_121141.xml","form_type":"4"}},{"id":1009409,"issuer":{"id":7244,"kind":"organization","name":"Werewolf Therapeutics, Inc."},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":2,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":3,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":4,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2025-11-04T00:08:19.000Z","date":"2025-11-03","kind":"sale","planned":true,"acquired":false,"shares":94063,"price":1.29,"value":121341.27,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction effected pursuant to a plan established pursuant to Rule 10b5-1 dated September 24, 2025."},{"field":"shares","element":"transactionShares","label":"F9","text":"The shares were sold as follows: 6,458 by AM LLC, 40,800 by BV 2014, 2,721 by BV 2014(B), 1,405 by AM BV2014, 8,985 by MPM OIF and 33,694 by UBS Oncology."},{"field":"price","element":"transactionPricePerShare","label":"F10","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.245 to $1.33 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the\nSecurities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F11","text":"The shares are held as follows: 422,201 by AM LLC, 2,666,424 by BV 2014, 177,846 by BV 2014(B), 91,778 by AM BV2014, 585,110 by MPM OIF and 2,204,251 by UBS Oncology."}],"balance_after":6147610,"source":{"system":"sec-edgar","filing":"0001231919-25-000406","document":"form4-11042025_121111.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1609492/000123191925000406/form4-11042025_121111.xml","form_type":"4"}},{"id":1009408,"issuer":{"id":7244,"kind":"organization","name":"Werewolf Therapeutics, Inc."},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":2,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":3,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":4,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2025-11-04T00:08:19.000Z","date":"2025-10-31","kind":"sale","planned":true,"acquired":false,"shares":114044,"price":1.28,"value":145976.32,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction effected pursuant to a plan established pursuant to Rule 10b5-1 dated September 24, 2025."},{"field":"shares","element":"transactionShares","label":"F6","text":"The shares were sold as follows: 7,830 by AM LLC, 49,467 by BV 2014, 3,299 by BV 2014(B), 1,702 by AM BV2014, 10,894 by MPM OIF and 40,852 by UBS Oncology."},{"field":"price","element":"transactionPricePerShare","label":"F7","text":". The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.205 to $1.415 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the\nSecurities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F8","text":"The shares are held as follows: 428,659 by AM LLC, 2,707,224 by BV 2014, 180,567 by BV 2014(B), 93,183 by AM BV2014, 594,095 by MPM OIF and 2,237,945 by UBS Oncology."}],"balance_after":6241673,"source":{"system":"sec-edgar","filing":"0001231919-25-000406","document":"form4-11042025_121111.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1609492/000123191925000406/form4-11042025_121111.xml","form_type":"4"}},{"id":1009407,"issuer":{"id":7244,"kind":"organization","name":"Werewolf Therapeutics, Inc."},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":2,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":3,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":4,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2025-11-04T00:08:19.000Z","date":"2025-10-30","kind":"sale","planned":true,"acquired":false,"shares":86936,"price":1.43,"value":124318.48,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction effected pursuant to a plan established pursuant to Rule 10b5-1 dated September 24, 2025."},{"field":"shares","element":"transactionShares","label":"F2","text":"The shares were sold as follows: 5,969 by MPM Asset Management LLC (\"AM LLC\"), 37,709 by MPM BioVentures 2014, L.P. (\"BV 2014\"), 2,515 by MPM BioVentures 2014(B), L.P. (BV 2014(B), 1,298 MPM Asset Management Investors BV2014 LLC (\"AM\nBV2014\"), 8,304 by MPM Oncology Innovations Fund, L.P. (\"MPM OIF\") and 31,141 by UBS Oncology Impact Fund L.P. (\"UBS Oncology\"). MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC (\"BV LLC\") are the direct and indirect general partners of\nBV 2014 and BV 2014(B). BV LLC is the manager of AM BV2014. MPM Oncology Innovations Fund GP LLC (\"MPM OIF GP\") is the general partner of MPM OIF. Ansbert Gadicke is a member of AM LLC, a managing director of BV LLC and a manager of MPM OIF\nGP. Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its pecuniary interest therein."},{"field":"shares","element":"transactionShares","label":"F3","text":"MPM BioImpact LLC (\"BioImpact\") is the General Partner of Oncology Impact Fund (Cayman) Management L.P., the General Partner of UBS Oncology. Ansbert Gadicke is the managing partner of BioImpact. Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its pecuniary interest therein."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.365 to $1.55 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"The shares are held as follows: 436,489 by AM LLC, 2,756,691 by BV 2014, 183,866 by BV 2014(B), 94,885 by AM BV2014, 604,989 by MPM OIF and 2,278,797 by UBS Oncology."}],"balance_after":6355717,"source":{"system":"sec-edgar","filing":"0001231919-25-000406","document":"form4-11042025_121111.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1609492/000123191925000406/form4-11042025_121111.xml","form_type":"4"}},{"id":1011777,"issuer":{"id":7244,"kind":"organization","name":"Werewolf Therapeutics, Inc."},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":2,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":3,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":4,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2025-10-29T23:21:58.000Z","date":"2025-10-29","kind":"sale","planned":true,"acquired":false,"shares":134240,"price":1.55,"value":208072.0,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction effected pursuant to a plan established pursuant to Rule 10b5-1 dated September 24, 2025."},{"field":"shares","element":"transactionShares","label":"F9","text":"The shares were sold as follows: 9,216 by AM LLC, 58,227 by BV 2014, 3,884 by BV 2014(B), 2,004 by AM BV2014, 12,823 by MPM OIF and 48,086 by UBS Oncology."},{"field":"price","element":"transactionPricePerShare","label":"F10","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.51 to $1.62 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F11","text":"The shares are held as follows: 442,458 by AM LLC, 2,794,400 by BV 2014, 186,381 by BV 2014(B), 96,183 by AM BV2014, 613,293 by MPM OIF and 2,309,938 by UBS Oncology."}],"balance_after":6442653,"source":{"system":"sec-edgar","filing":"0001231919-25-000374","document":"form4-10292025_111051.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1609492/000123191925000374/form4-10292025_111051.xml","form_type":"4"}},{"id":1011776,"issuer":{"id":7244,"kind":"organization","name":"Werewolf Therapeutics, Inc."},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":2,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":3,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":4,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2025-10-29T23:21:58.000Z","date":"2025-10-28","kind":"sale","planned":true,"acquired":false,"shares":69068,"price":1.64,"value":113271.52,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction effected pursuant to a plan established pursuant to Rule 10b5-1 dated September 24, 2025."},{"field":"shares","element":"transactionShares","label":"F6","text":"The shares were sold as follows: 4,742 by AM LLC, 29,958 by BV 2014, 1,998 by BV 2014(B), 1,031 by AM BV2014, 6,598 by MPM OIF and 24,741 by UBS Oncology."},{"field":"price","element":"transactionPricePerShare","label":"F7","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.605 to $1.70 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F8","text":"The shares are held as follows: 451,674 by AM LLC, 2,852,627 by BV 2014, 190,265 by BV 2014(B), 98,187 by AM BV2014, 626,116 by MPM OIF and 2,358,024 by UBS Oncology."}],"balance_after":6576893,"source":{"system":"sec-edgar","filing":"0001231919-25-000374","document":"form4-10292025_111051.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1609492/000123191925000374/form4-10292025_111051.xml","form_type":"4"}},{"id":1011775,"issuer":{"id":7244,"kind":"organization","name":"Werewolf Therapeutics, Inc."},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":2,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":3,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":4,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2025-10-29T23:21:58.000Z","date":"2025-10-27","kind":"sale","planned":true,"acquired":false,"shares":72709,"price":1.72,"value":125059.48,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction effected pursuant to a plan established pursuant to Rule 10b5-1 dated September 24, 2025."},{"field":"shares","element":"transactionShares","label":"F2","text":"The shares were sold as follows: 4,992 by MPM Asset Management LLC (\"AM LLC\"), 31,538 by MPM BioVentures 2014, L.P. (\"BV 2014\"), 2,104 by MPM BioVentures 2014(B), L.P. (BV 2014(B), 1,085 MPM Asset Management Investors BV2014 LLC (\"AM BV2014\"),\n6,945 by MPM Oncology Innovations Fund, L.P. (\"MPM OIF\") and 26,045 by UBS Oncology Impact Fund L.P. (\"UBS Oncology\"). MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC (\"BV LLC\") are the direct and indirect general partners of BV 2014 and BV 2014(B). BV LLC is the manager of AM BV2014. MPM Oncology Innovations Fund GP LLC (\"MPM OIF GP\") is the general partner of MPM OIF. Ansbert Gadicke is a member of AM LLC, a managing director of BV LLC and a manager of MPM OIF GP. Each\nReporting Person disclaims beneficial ownership of the securities except to the extent of his or its pecuniary interest therein."},{"field":"shares","element":"transactionShares","label":"F3","text":"MPM BioImpact LLC (\"BioImpact\") is the General Partner of Oncology Impact Fund (Cayman) Management L.P., the General Partner of UBS Oncology. Ansbert Gadicke is the managing partner of BioImpact. Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its pecuniary interest therein."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.675 to $1.82 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the\nSecurities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"The shares are held as follows: 456,416 by AM LLC, 2,882,585 by BV 2014, 192,263 by BV 2014(B), 99,218 by AM BV2014, 632,714 by MPM OIF and 2,382,765 by UBS Oncology."}],"balance_after":6645961,"source":{"system":"sec-edgar","filing":"0001231919-25-000374","document":"form4-10292025_111051.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1609492/000123191925000374/form4-10292025_111051.xml","form_type":"4"}},{"id":1147829,"issuer":{"id":75965,"kind":"organization","name":"iTeos Therapeutics, Inc.","symbol":"ITOS"},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"Former 10% Owner"}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":2,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"Former 10% Owner"}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":3,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"Former 10% Owner"}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":4,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"Former 10% Owner"}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":5,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"Former 10% Owner"}},{"id":2487,"kind":"organization","name":"MPM BIOVENTURES 2018 (B), L.P.","position":6,"cik":"0001729504","reported_name":"MPM BIOVENTURES 2018 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"Former 10% Owner"}},{"id":2488,"kind":"organization","name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","position":7,"cik":"0001734817","reported_name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"Former 10% Owner"}},{"id":2480,"kind":"person","name":"EVNIN LUKE","position":8,"cik":"0001134657","reported_name":"EVNIN LUKE","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"Former 10% Owner"}},{"id":2482,"kind":"person","name":"Foley Todd","position":9,"cik":"0001473930","reported_name":"Foley Todd","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"Former 10% Owner"}}],"security":"Common Stock","published_at":"2025-05-15T21:32:22.000Z","date":"2025-05-13","kind":"sale","planned":false,"acquired":false,"shares":630191,"price":8.06,"value":5079339.46,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The shares were sold as follows: 355,406 by MPM BioVentures 2014, L.P. (\"BV 2014\"),  22,386 by MPM BioVentures 2014 (B), L.P. (\"BV 2014(B)\"), 12,233 by MPM Asset Management Investors BV2014 LLC (\"AM BV2014\"), 224,467 by MPM BioVentures 2018, L.P. (\"BV 2018\"), 11,267 by MPM BioVentures 2018(B), L.P. (\"BV 2018(B)\") and 4,432 by MPM Asset Management Investors BV2018 LLC (\"AM BV2018\").  MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC (\"BV 2014 LLC\") are the direct and indirect general partners of BV 2014 and BV 2014(B). BV 2014 LLC is the manager of AM BV2014. MPM BioVentures 2018 GP LLC and MPM BioVentures 2018 LLC (\"BV 2018 LLC\") are the direct and indirect general partners of BV 2018 and BV 2018(B). BV 2018 LLC is the manager of AM BV2018. Messrs. Evnin and Foley are managing directors of BV 2014 LLC and BV 2018 LLC."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $7.73 to $8.34 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The shares are held as follows: 1,189,174 by BV 2014, 74,903 by BV 2014(B), 40,931 by AM BV2014, 751,056 by BV 2018, 37,699 by BV 2018(B) and 14,831 by AM BV2018. Each of the Reporting Persons disclaims beneficial ownership of the securities herein except to the extent of his or its respective pecuniary interest therein, if any."}],"balance_after":2108594,"source":{"system":"sec-edgar","filing":"0001415889-25-013248","document":"form4-05152025_090517.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1134657/000141588925013248/form4-05152025_090517.xml","form_type":"4"}},{"id":1163337,"issuer":{"id":7244,"kind":"organization","name":"Werewolf Therapeutics, Inc."},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":2,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":3,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":4,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2482,"kind":"person","name":"Foley Todd","position":6,"cik":"0001473930","reported_name":"Foley Todd","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Warrant (Right to Buy)","published_at":"2025-04-30T20:17:02.000Z","date":"2025-03-27","kind":"other","planned":false,"acquired":false,"shares":18743,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On March 27, 2025, the Reporting Persons exercised warrants to purchase an aggregate of 22,758 shares of the Company's Common Stock for $0.09 per share.  The Reporting Persons paid the exercise price on a cashless basis, resulting in the Company's withholding of 1,963 of the warrant shares to pay the exercise price and issuing the remaining 20,795 shares."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"Immediately exercisable."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F6","text":"The warrants were held as follows: 17,023 by BV 2014, 1,135 by BV 2014(B) and 585 by AM BV 2014."}],"balance_after":0,"derivative":{"exercise_price":0.09,"expiration_date":"2025-08-13","underlying":"Common Stock","underlying_shares":18743},"source":{"system":"sec-edgar","filing":"0001415889-25-011574","document":"form4-04302025_080449.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1473930/000141588925011574/form4-04302025_080449.xml","form_type":"4"}},{"id":1163336,"issuer":{"id":7244,"kind":"organization","name":"Werewolf Therapeutics, Inc."},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":2,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":3,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":4,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2482,"kind":"person","name":"Foley Todd","position":6,"cik":"0001473930","reported_name":"Foley Todd","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Warrant (Right to Buy)","published_at":"2025-04-30T20:17:02.000Z","date":"2025-03-27","kind":"other","planned":false,"acquired":false,"shares":4015,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On March 27, 2025, the Reporting Persons exercised warrants to purchase an aggregate of 22,758 shares of the Company's Common Stock for $0.09 per share.  The Reporting Persons paid the exercise price on a cashless basis, resulting in the Company's withholding of 1,963 of the warrant shares to pay the exercise price and issuing the remaining 20,795 shares."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"Immediately exercisable."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"The warrants were held as follows:  3,647 by BV 2014, 243 by BV 2014(B) and 125 by AM BV 2014."}],"balance_after":0,"derivative":{"exercise_price":0.09,"expiration_date":"2025-04-09","underlying":"Common Stock","underlying_shares":4015},"source":{"system":"sec-edgar","filing":"0001415889-25-011574","document":"form4-04302025_080449.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1473930/000141588925011574/form4-04302025_080449.xml","form_type":"4"}},{"id":1163335,"issuer":{"id":7244,"kind":"organization","name":"Werewolf Therapeutics, Inc."},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":2,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":3,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":4,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2482,"kind":"person","name":"Foley Todd","position":6,"cik":"0001473930","reported_name":"Foley Todd","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2025-04-30T20:17:02.000Z","date":"2025-03-27","kind":"sale","planned":false,"acquired":false,"shares":1963,"price":1.05,"value":2061.15,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On March 27, 2025, the Reporting Persons exercised warrants to purchase an aggregate of 22,758 shares of the Company's Common Stock for $0.09 per share.  The Reporting Persons paid the exercise price on a cashless basis, resulting in the Company's withholding of 1,963 of the warrant shares to pay the exercise price and issuing the remaining 20,795 shares."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The shares are held as follows: 2,914,123 by BV 2014, 194,367 by MPM 2014(B) and 100,303 by AM BV2014. Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its pecuniary interest therein."}],"balance_after":3208793,"source":{"system":"sec-edgar","filing":"0001415889-25-011574","document":"form4-04302025_080449.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1473930/000141588925011574/form4-04302025_080449.xml","form_type":"4"}},{"id":1163334,"issuer":{"id":7244,"kind":"organization","name":"Werewolf Therapeutics, Inc."},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":2,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":3,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":4,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2482,"kind":"person","name":"Foley Todd","position":6,"cik":"0001473930","reported_name":"Foley Todd","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2025-04-30T20:17:02.000Z","date":"2025-03-27","kind":"other","planned":false,"acquired":true,"shares":22758,"price":0.09,"value":2048.22,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On March 27, 2025, the Reporting Persons exercised warrants to purchase an aggregate of 22,758 shares of the Company's Common Stock for $0.09 per share.  The Reporting Persons paid the exercise price on a cashless basis, resulting in the Company's withholding of 1,963 of the warrant shares to pay the exercise price and issuing the remaining 20,795 shares."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"The shares are held as follows: 2,915,905 by MPM BioVentures 2014, L.P. (\"BV 2014\"), 194,486 by MPM BioVentures 2014(B), L.P. (\"BV 2014(B)\") and 100,365 by MPM Asset Management Investors BV2014 LLC (\"AM BV2014\"). MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC (\"BV LLC\") are the direct and indirect general partners of BV 2014 and BV 2014(B). BV LLC is the manager of AM BV2014.Todd Foley is a Managing Director of BV LLC. Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its pecuniary interest therein."}],"balance_after":3210756,"source":{"system":"sec-edgar","filing":"0001415889-25-011574","document":"form4-04302025_080449.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1473930/000141588925011574/form4-04302025_080449.xml","form_type":"4"}},{"id":1334310,"issuer":{"id":2163,"kind":"organization","name":"Entrada Therapeutics, Inc.","symbol":"TRDA"},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2480,"kind":"person","name":"EVNIN LUKE","position":2,"cik":"0001134657","reported_name":"EVNIN LUKE","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2481,"kind":"person","name":"GADICKE ANSBERT","position":3,"cik":"0001134655","reported_name":"GADICKE ANSBERT","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2482,"kind":"person","name":"Foley Todd","position":4,"cik":"0001473930","reported_name":"Foley Todd","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":5,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":6,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":7,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":8,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2487,"kind":"organization","name":"MPM BIOVENTURES 2018 (B), L.P.","position":9,"cik":"0001729504","reported_name":"MPM BIOVENTURES 2018 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2488,"kind":"organization","name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","position":10,"cik":"0001734817","reported_name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2024-12-12T22:00:18.000Z","date":"2024-12-11","kind":"sale","planned":false,"acquired":false,"shares":21787,"price":20.23,"value":440751.01,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F5","text":"The shares were sold as follows: 9,893 by BV 2014, 660 by BV 2014(B), 341 by AM BV2014, 10,153 by BV 2018, 540 by BV 2018(B) and 200 by AM BV2018."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"Price represents the weighted average sale price of the shares sold. The sale price ranged from $20.01 to $20.595 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding\nthe number of shares sold at each separate price within the range set forth in this Form 4."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its respective pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F7","text":"The shares are held as follows: 1,989,368 by BV 2014, 132,687 by BV 2014(B), 68,475 by AM BV2014, 2,041,721 by BV 2018, 108,515 by BV 2018(B) and 40,296 by AM BV2018."}],"balance_after":4381062,"source":{"system":"sec-edgar","filing":"0001415889-24-029141","document":"form4-12122024_051201.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1134655/000141588924029141/form4-12122024_051201.xml","form_type":"4"}},{"id":1334309,"issuer":{"id":2163,"kind":"organization","name":"Entrada Therapeutics, Inc.","symbol":"TRDA"},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2480,"kind":"person","name":"EVNIN LUKE","position":2,"cik":"0001134657","reported_name":"EVNIN LUKE","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2481,"kind":"person","name":"GADICKE ANSBERT","position":3,"cik":"0001134655","reported_name":"GADICKE ANSBERT","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2482,"kind":"person","name":"Foley Todd","position":4,"cik":"0001473930","reported_name":"Foley Todd","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":5,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":6,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":7,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":8,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2487,"kind":"organization","name":"MPM BIOVENTURES 2018 (B), L.P.","position":9,"cik":"0001729504","reported_name":"MPM BIOVENTURES 2018 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2488,"kind":"organization","name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","position":10,"cik":"0001734817","reported_name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2024-12-12T22:00:18.000Z","date":"2024-12-10","kind":"sale","planned":false,"acquired":false,"shares":22935,"price":20.77,"value":476359.95,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The shares were sold as follows: 10,415 by MPM BioVentures 2014, L.P. (\"BV 2014\"), 695 by MPM BioVentures 2014(B), L.P. (\"BV 2014(B)\"), 358 by MPM Asset Management Investors BV2014 LLC (\"AM BV2014\"), 10 688 by MPM BioVentures 2018, L.P. (\"BV 2018\"), 568 by MPM BioVentures 2018 (B), L.P. (\"BV 2018(B)\") and 211 by MPM Asset Management Investors BV2018 LLC (\"AM BV2018\"). MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC (\"BV2014 LLC\") are the direct and indirect general partners of BV 2014 and BV 2014(B). BV2014 LLC is the manager of AM BV2014. MPM BioVentures 2018 GP LLC and MPM BioVentures 2018 LLC (\"BV2018 LLC\") are the direct and indirect general partners of BV 2018 and BV 2018(B). BV 2018 LLC is the manager of AM BV2018. Messrs. Evnin, Foley and Gadicke are managing directors of BV 2014 LLC and BV 2018 LLC."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Price represents the weighted average sale price of the shares sold. The sale price ranged from $20.356 to $21.315 per share. Upon request by the Commission staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The shares are held as follows: 1,999,261 by BV 2014, 133,347 by BV 2014(B), 68,816 by AM BV2014, 2,051,874 by BV 2018, 109,055 by BV 2018(B) and 40,496 by AM BV2018."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its respective pecuniary interest therein."}],"balance_after":4402849,"source":{"system":"sec-edgar","filing":"0001415889-24-029141","document":"form4-12122024_051201.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1134655/000141588924029141/form4-12122024_051201.xml","form_type":"4"}},{"id":1867665,"issuer":{"id":94327,"kind":"organization","name":"TCR2 THERAPEUTICS INC.","symbol":"TCRR"},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2482,"kind":"person","name":"Foley Todd","position":2,"cik":"0001473930","reported_name":"Foley Todd","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2480,"kind":"person","name":"EVNIN LUKE","position":3,"cik":"0001134657","reported_name":"EVNIN LUKE","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":4,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":6,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":7,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":69400,"kind":"organization","name":"MPM ASSET MANAGEMENT LLC","position":8,"cik":"0001263048","reported_name":"MPM ASSET MANAGEMENT LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2023-06-05T20:36:19.000Z","date":"2023-06-01","kind":"other","planned":false,"acquired":false,"shares":4158964,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"This Form 4 reports securities disposed of pursuant to the terms of the Agreement and Plan of Merger, dated as of March 5, 2023, by and among TCR2 Therapeutics Inc. (the \"Company\"), Adaptimmune Therapeutics plc (\"Parent\") and CM Merger Sub, Inc., an indirect wholly-owned subsidiary of Parent (\"Merger Sub\"), as amended by that certain Amendment No. 1 to the Agreement and Plan of Merger, dated April 5, 2023, by and among the Company, Parent and Merger Sub (the \"Merger Agreement\"), pursuant to which Merger Sub merged with and into the Company (the \"Merger\") with the Company surviving the Merger as an indirect wholly-owned subsidiary of Parent effective as of June 1, 2023 (the \"Effective Time\")."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"At the Effective Time, each issued and outstanding share of common stock of the Company (each, a \"Share\") (excluding any Shares held in treasury of the Company or owned, directly or indirectly, by Parent or Merger Sub immediately prior to the Effective Time) was cancelled and converted into the right to receive 1.5117 (the \"Exchange Ratio\") American Depositary Shares of Parent (\"Parent ADS\") representing six ordinary shares of Parent (\"Parent Ordinary Shares\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The Reporting Persons disclaim beneficial ownership of the securities except to the extent of their respective pecuniary interests therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"The shares were held as follows: 3,056,272 by MPM BioVentures 2014, L.P. (\"BV 2014\"), 203,846 by MPM BioVentures 2014(B), L.P. (\"BV 2014(B)\"), 110,859 by MPM Asset Management Investors BV2014 LLC (\"AM BV2014\"), 304,001 by MPM Asset Management LLC (\"AM LLC\"), 421,070 by MPM SunStates Fund, L.P. (\"MPM SunStates\") and 62,916 by MPM Asset Management Investors Sunstates Fund LLC (\"AM SunStates\"). MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC (\"BV LLC\") are the direct and indirect general partners of BV 2014 and BV 2014(B) and BV LLC is the manager of AM BV2014. MPM SunStates Fund GP LLC and MPM SunStates GP Managing Member LLC (\"SunStates GP\") are the direct and indirect general partners of MPM SunStates and SunStates GP is the manager of AM SunStates. Luke Evnin, Ansbert Gadicke and Todd Foley are the managing directors of BV LLC, Ansbert Gadicke is a member of SunStates GP and Luke Evnin and Anbsert Gadicke are the members of AM LLC."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0001209191-23-034340","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1134657/000120919123034340/doc4.xml","form_type":"4"}},{"id":2441897,"issuer":{"id":75965,"kind":"organization","name":"iTeos Therapeutics, Inc.","symbol":"ITOS"},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2480,"kind":"person","name":"EVNIN LUKE","position":2,"cik":"0001134657","reported_name":"EVNIN LUKE","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2482,"kind":"person","name":"Foley Todd","position":3,"cik":"0001473930","reported_name":"Foley Todd","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":4,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":6,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":7,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2487,"kind":"organization","name":"MPM BIOVENTURES 2018 (B), L.P.","position":8,"cik":"0001729504","reported_name":"MPM BIOVENTURES 2018 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2488,"kind":"organization","name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","position":9,"cik":"0001734817","reported_name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2022-01-06T21:12:58.000Z","date":"2022-01-05","kind":"sale","acquired":false,"shares":18135,"price":42.03,"value":762214.05,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F13","text":"The shares were sold as follows: 10,804 by BV 2014, 372 by AM BV2014, 6,824 by BV 2018 and 135 by AM BV2018."},{"field":"price","element":"transactionPricePerShare","label":"F14","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $42.00 to $42.38 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F15","text":"The shares are held as follows: 1,544,580 by BV 2014, 97,289 by BV 2014(B), 53,164 by AM BV2014, 975,523 by BV 2018, 48,966 by BV 2018(B) and 19,263 by AM BV2018.  Each of the Reporting Persons disclaims beneficial ownership of the securities herein except to the extent of his or its respective pecuniary interest therein, if any."}],"balance_after":2738785,"source":{"system":"sec-edgar","filing":"0001209191-22-002168","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1134657/000120919122002168/doc4.xml","form_type":"4"}},{"id":2441896,"issuer":{"id":75965,"kind":"organization","name":"iTeos Therapeutics, Inc.","symbol":"ITOS"},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2480,"kind":"person","name":"EVNIN LUKE","position":2,"cik":"0001134657","reported_name":"EVNIN LUKE","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2482,"kind":"person","name":"Foley Todd","position":3,"cik":"0001473930","reported_name":"Foley Todd","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":4,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":6,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":7,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2487,"kind":"organization","name":"MPM BIOVENTURES 2018 (B), L.P.","position":8,"cik":"0001729504","reported_name":"MPM BIOVENTURES 2018 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2488,"kind":"organization","name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","position":9,"cik":"0001734817","reported_name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2022-01-06T21:12:58.000Z","date":"2022-01-04","kind":"sale","acquired":false,"shares":7671,"price":46.47,"value":356471.37,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F10","text":"The shares were sold as follows: 4,590 by BV 2014, 154 by AM BV2014, 2,874 by  BV 2018 and 53 by AM BV2018."},{"field":"price","element":"transactionPricePerShare","label":"F11","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $46.025 to $46.965 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F12","text":"The shares are held as follows: 1,555,384 by BV 2014, 97,289 by BV 2014(B), 53,536 by AM BV2014, 982,347 by BV 2018, 48,966 by BV 2018(B) and 19,398 by AM BV2018.  Each of the Reporting Persons disclaims beneficial ownership of the securities herein except to the extent of his or its respective pecuniary interest therein, if any."}],"balance_after":2756920,"source":{"system":"sec-edgar","filing":"0001209191-22-002168","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1134657/000120919122002168/doc4.xml","form_type":"4"}},{"id":2441895,"issuer":{"id":75965,"kind":"organization","name":"iTeos Therapeutics, Inc.","symbol":"ITOS"},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2480,"kind":"person","name":"EVNIN LUKE","position":2,"cik":"0001134657","reported_name":"EVNIN LUKE","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2482,"kind":"person","name":"Foley Todd","position":3,"cik":"0001473930","reported_name":"Foley Todd","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":4,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":6,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":7,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2487,"kind":"organization","name":"MPM BIOVENTURES 2018 (B), L.P.","position":8,"cik":"0001729504","reported_name":"MPM BIOVENTURES 2018 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2488,"kind":"organization","name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","position":9,"cik":"0001734817","reported_name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2022-01-06T21:12:58.000Z","date":"2022-01-04","kind":"sale","acquired":false,"shares":6768,"price":45.32,"value":306725.76,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F7","text":"The shares were sold as follows: 4,050 by BV 2014, 133 by AM BV2014, 2,544 by BV 2018 and 41 by AM BV2018."},{"field":"price","element":"transactionPricePerShare","label":"F8","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $45.00 to $45.90 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F9","text":"The shares are held as follows: 1,559,974 by BV 2014, 97,289 by BV 2014(B), 53,690 by AM BV2014, 985,221 by BV 2018, 48,966 by BV 2018(B) and 19,451 by AM BV2018.  Each of the Reporting Persons disclaims beneficial ownership of the securities herein except to the extent of his or its respective pecuniary interest therein, if any."}],"balance_after":2764591,"source":{"system":"sec-edgar","filing":"0001209191-22-002168","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1134657/000120919122002168/doc4.xml","form_type":"4"}},{"id":2441894,"issuer":{"id":75965,"kind":"organization","name":"iTeos Therapeutics, Inc.","symbol":"ITOS"},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2480,"kind":"person","name":"EVNIN LUKE","position":2,"cik":"0001134657","reported_name":"EVNIN LUKE","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2482,"kind":"person","name":"Foley Todd","position":3,"cik":"0001473930","reported_name":"Foley Todd","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":4,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":6,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":7,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2487,"kind":"organization","name":"MPM BIOVENTURES 2018 (B), L.P.","position":8,"cik":"0001729504","reported_name":"MPM BIOVENTURES 2018 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2488,"kind":"organization","name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","position":9,"cik":"0001734817","reported_name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2022-01-06T21:12:58.000Z","date":"2022-01-04","kind":"sale","acquired":false,"shares":19366,"price":43.2,"value":836611.2,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"The shares were sold as follows: 11,534 by BV 2014, 390 by AM BV2014, 7,300 by BV 2018 and 142 by AM BV2018."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $43.00 to $43.79 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F6","text":"The shares are held as follows: 1,564,024 by BV 2014, 97,289 by BV 2014(B), 53,823 by AM BV2014, 987,765 by BV 2018, 48,966 by BV 2018(B) and 19,492 by AM BV2018.  Each of the Reporting Persons disclaims beneficial ownership of the securities herein except to the extent of his or its respective pecuniary interest therein, if any."}],"balance_after":2771359,"source":{"system":"sec-edgar","filing":"0001209191-22-002168","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1134657/000120919122002168/doc4.xml","form_type":"4"}},{"id":2441893,"issuer":{"id":75965,"kind":"organization","name":"iTeos Therapeutics, Inc.","symbol":"ITOS"},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2480,"kind":"person","name":"EVNIN LUKE","position":2,"cik":"0001134657","reported_name":"EVNIN LUKE","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2482,"kind":"person","name":"Foley Todd","position":3,"cik":"0001473930","reported_name":"Foley Todd","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":4,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":6,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":7,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2487,"kind":"organization","name":"MPM BIOVENTURES 2018 (B), L.P.","position":8,"cik":"0001729504","reported_name":"MPM BIOVENTURES 2018 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2488,"kind":"organization","name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","position":9,"cik":"0001734817","reported_name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2022-01-06T21:12:58.000Z","date":"2022-01-04","kind":"sale","acquired":false,"shares":94745,"price":42.05,"value":3984027.25,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The shares were sold as follows: 56,414 by MPM BioVentures 2014, L.P. (\"BV 2014\"), 1,959 by MPM Asset Management Investors BV2014 LLC (\"AM BV2014\"), 35,653 by MPM BioVentures 2018, L.P. (\"BV 2018\") and 719 by MPM Asset Management Investors BV2018 LLC (\"AM BV2018\"). MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC (\"BV 2014 LLC\") are the direct and indirect general partners of BV 2014 and BV 2014(B). BV 2014 LLC is the manager of AM BV2014. MPM BioVentures 2018 GP LLC and MPM BioVentures 2018 LLC (\"BV 2018 LLC\") are the direct and indirect general partners of BV 2018 and BV 2018(B). BV 2018 LLC is the manager of AM BV2018. Messrs. Evnin and Foley are managing directors of BV 2014 LLC and BV 2018 LLC."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $42.00 to $42.58 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The shares are held as follows: 1,575,558 by BV 2014, 97,289 by MPM BioVentures 2014(B), L.P. (\"BV 2014(B)\"), 54,213 by AM BV2014, 995,065 by BV 2018, 48,966 by MPM BioVentures 2018(B), L.P. (\"BV 2018(B)\") and 19,634 by AM BV2018. Each of the Reporting Persons disclaims beneficial ownership of the securities herein except to the extent of his or its respective pecuniary interest therein, if any."}],"balance_after":2790725,"source":{"system":"sec-edgar","filing":"0001209191-22-002168","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1134657/000120919122002168/doc4.xml","form_type":"4"}},{"id":2482700,"issuer":{"id":75965,"kind":"organization","name":"iTeos Therapeutics, Inc.","symbol":"ITOS"},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2480,"kind":"person","name":"EVNIN LUKE","position":2,"cik":"0001134657","reported_name":"EVNIN LUKE","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2482,"kind":"person","name":"Foley Todd","position":3,"cik":"0001473930","reported_name":"Foley Todd","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":4,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":6,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":7,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2487,"kind":"organization","name":"MPM BIOVENTURES 2018 (B), L.P.","position":8,"cik":"0001729504","reported_name":"MPM BIOVENTURES 2018 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2488,"kind":"organization","name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","position":9,"cik":"0001734817","reported_name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2021-12-07T23:35:57.000Z","date":"2021-12-07","kind":"sale","acquired":false,"shares":1494,"price":34.11,"value":50960.34,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction effected pursuant to a plan established pursuant to Rule 10b5-1."},{"field":"shares","element":"transactionShares","label":"F24","text":"The shares were sold as follows: 890 by BV 2014, 31 by AM BV2014, 562 by BV 2018 and 11 by AM BV2018."},{"field":"price","element":"transactionPricePerShare","label":"F25","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $33.875 to $34.25 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F26","text":"The shares are held as follows: 1,631,972 by BV 2014, 97,289 by BV 2014(B), 56,172 by AM BV2014, 1,030,718 by BV 2018, 48,966 by BV 2018(B) and 20,353 by AM BV2018. 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These shares were sold in multiple transactions at prices ranging from $31.98 to $32.975 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F12","text":"The shares are held as follows: 1,644,599 by BV 2014, 97,289 by BV 2014(B), 56,607 by AM BV2014, 1,038,693 by BV 2018, 48,966 by BV 2018(B) and 20,511 by AM BV2018.  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Each of the Reporting Persons disclaims beneficial ownership of the securities herein except to the extent of his or its respective pecuniary interest therein, if any."}],"balance_after":2915134,"source":{"system":"sec-edgar","filing":"0001209191-21-068408","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1134657/000120919121068408/doc4.xml","form_type":"4"}},{"id":2482693,"issuer":{"id":75965,"kind":"organization","name":"iTeos Therapeutics, Inc.","symbol":"ITOS"},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2480,"kind":"person","name":"EVNIN LUKE","position":2,"cik":"0001134657","reported_name":"EVNIN LUKE","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2482,"kind":"person","name":"Foley Todd","position":3,"cik":"0001473930","reported_name":"Foley Todd","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":4,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":6,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":7,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2487,"kind":"organization","name":"MPM BIOVENTURES 2018 (B), L.P.","position":8,"cik":"0001729504","reported_name":"MPM BIOVENTURES 2018 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2488,"kind":"organization","name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","position":9,"cik":"0001734817","reported_name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2021-12-07T23:35:57.000Z","date":"2021-12-03","kind":"sale","acquired":false,"shares":2419,"price":35.44,"value":85729.36,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction effected pursuant to a plan established pursuant to Rule 10b5-1."},{"field":"shares","element":"transactionShares","label":"F5","text":"The shares were sold as follows: 1,441 by BV 2014, 50 by AM BV2014, 910 by BV 2018 and 18 by AM BV2018."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $35.15 to $36.06 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F7","text":"The shares are held as follows: 1,649,752 by BV 2014, 97,289 by BV 2014(B), 56,784 by AM BV2014, 1,041,947 by BV 2018, 48,966 by BV 2018(B) and 20,575 by AM BV2018.  Each of the Reporting Persons disclaims beneficial ownership of the securities herein except to the extent of his or its respective pecuniary interest therein, if any."}],"balance_after":2915313,"source":{"system":"sec-edgar","filing":"0001209191-21-068408","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1134657/000120919121068408/doc4.xml","form_type":"4"}},{"id":2482692,"issuer":{"id":75965,"kind":"organization","name":"iTeos Therapeutics, Inc.","symbol":"ITOS"},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2480,"kind":"person","name":"EVNIN LUKE","position":2,"cik":"0001134657","reported_name":"EVNIN LUKE","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2482,"kind":"person","name":"Foley Todd","position":3,"cik":"0001473930","reported_name":"Foley Todd","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":4,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":6,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":7,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2487,"kind":"organization","name":"MPM BIOVENTURES 2018 (B), L.P.","position":8,"cik":"0001729504","reported_name":"MPM BIOVENTURES 2018 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2488,"kind":"organization","name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","position":9,"cik":"0001734817","reported_name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2021-12-07T23:35:57.000Z","date":"2021-12-03","kind":"sale","acquired":false,"shares":17569,"price":34.68,"value":609292.92,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction effected pursuant to a plan established pursuant to Rule 10b5-1."},{"field":"shares","element":"transactionShares","label":"F2","text":"The shares were sold as follows: 10,467 by MPM BioVentures 2014, L.P. (\"BV 2014\"), 359 by MPM Asset Management Investors BV2014 LLC (\"AM BV2014\"), 6,612 by MPM BioVentures 2018, L.P. (\"BV 2018\") and 131 by MPM Asset Management Investors BV2018 LLC (\"AM BV2018\"). MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC (\"BV 2014 LLC\") are the direct and indirect general partners of BV 2014 and BV 2014(B). BV 2014 LLC is the manager of AM BV2014. MPM BioVentures 2018 GP LLC and MPM BioVentures 2018 LLC (\"BV 2018 LLC\") are the direct and indirect general partners of BV 2018 and BV 2018(B). BV 2018 LLC is the manager of AM BV2018. Messrs. Evnin and Foley are managing directors of BV 2014 LLC and BV 2018 LLC."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $34.15 to $35.135 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"The shares are held as follows: 1,651,193 by BV 2014, 97,289 by, 56,834 by AM BV2014, 1,042,857 by BV 2018, 48,966 by BV 2018(B) and 20,593 by AM BV2018.  Each of the Reporting Persons disclaims beneficial ownership of the securities herein except to the extent of his or its respective pecuniary interest therein, if any."}],"balance_after":2917732,"source":{"system":"sec-edgar","filing":"0001209191-21-068408","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1134657/000120919121068408/doc4.xml","form_type":"4"}},{"id":2489258,"issuer":{"id":75965,"kind":"organization","name":"iTeos Therapeutics, Inc.","symbol":"ITOS"},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2480,"kind":"person","name":"EVNIN LUKE","position":2,"cik":"0001134657","reported_name":"EVNIN LUKE","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2482,"kind":"person","name":"Foley Todd","position":3,"cik":"0001473930","reported_name":"Foley Todd","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":4,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":6,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":7,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2487,"kind":"organization","name":"MPM BIOVENTURES 2018 (B), L.P.","position":8,"cik":"0001729504","reported_name":"MPM BIOVENTURES 2018 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2488,"kind":"organization","name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","position":9,"cik":"0001734817","reported_name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2021-12-02T23:53:51.000Z","date":"2021-12-02","kind":"sale","acquired":false,"shares":7430,"price":34.83,"value":258786.9,"ownership":{"direct":false,"nature":"See Fpotnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction effected pursuant to a plan established pursuant to Rule 10b5-1."},{"field":"shares","element":"transactionShares","label":"F20","text":"The shares were sold as follows: 4,427 by BV 2014, 152 by AM BV2014, 2,796 by BV 2018 and 55 by AM BV2018."},{"field":"price","element":"transactionPricePerShare","label":"F21","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $34.25 to $35.14 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F22","text":"The shares are held as follows: 1,661,660 by BV 2014, 97,289 by BV 2014(B), 57,193 by AM BV2014, 1,049,469 by BV 2018, 48,966 by BV 2018(B) and 20,724 by AM BV2018. Each of the Reporting Persons disclaims beneficial ownership of the securities herein except to the extent of his or its respective pecuniary interest therein, if any."}],"balance_after":2935301,"source":{"system":"sec-edgar","filing":"0001209191-21-067706","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1134657/000120919121067706/doc4.xml","form_type":"4"}},{"id":2489257,"issuer":{"id":75965,"kind":"organization","name":"iTeos Therapeutics, Inc.","symbol":"ITOS"},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2480,"kind":"person","name":"EVNIN LUKE","position":2,"cik":"0001134657","reported_name":"EVNIN LUKE","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2482,"kind":"person","name":"Foley Todd","position":3,"cik":"0001473930","reported_name":"Foley Todd","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":4,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":6,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":7,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2487,"kind":"organization","name":"MPM BIOVENTURES 2018 (B), L.P.","position":8,"cik":"0001729504","reported_name":"MPM BIOVENTURES 2018 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2488,"kind":"organization","name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","position":9,"cik":"0001734817","reported_name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2021-12-02T23:53:51.000Z","date":"2021-12-02","kind":"sale","acquired":false,"shares":29757,"price":33.74,"value":1004001.18,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction effected pursuant to a plan established pursuant to Rule 10b5-1."},{"field":"shares","element":"transactionShares","label":"F17","text":"The shares were sold as follows: 17,728 by BV 2014, 611 by AM BV2014, 11,197 by BV 2018 and 221 by AM BV2018."},{"field":"price","element":"transactionPricePerShare","label":"F18","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $33.19 to $34.17 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F19","text":"The shares are held as follows: 1,666,087 by BV 2014, 97,289 by BV 2014(B), 57,345 by AM BV2014, 1,052,265 by BV 2018, 48,966 by BV 2018(B) and 20,779 by AM BV2018.  Each of the Reporting Persons disclaims beneficial ownership of the securities herein except to the extent of his or its respective pecuniary interest therein, if any."}],"balance_after":2942731,"source":{"system":"sec-edgar","filing":"0001209191-21-067706","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1134657/000120919121067706/doc4.xml","form_type":"4"}},{"id":2489256,"issuer":{"id":75965,"kind":"organization","name":"iTeos Therapeutics, Inc.","symbol":"ITOS"},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2480,"kind":"person","name":"EVNIN LUKE","position":2,"cik":"0001134657","reported_name":"EVNIN LUKE","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2482,"kind":"person","name":"Foley Todd","position":3,"cik":"0001473930","reported_name":"Foley Todd","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":4,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":6,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":7,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2487,"kind":"organization","name":"MPM BIOVENTURES 2018 (B), L.P.","position":8,"cik":"0001729504","reported_name":"MPM BIOVENTURES 2018 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2488,"kind":"organization","name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","position":9,"cik":"0001734817","reported_name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2021-12-02T23:53:51.000Z","date":"2021-12-01","kind":"sale","acquired":false,"shares":896,"price":35.34,"value":31664.64,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction effected pursuant to a plan established pursuant to Rule 10b5-1."},{"field":"shares","element":"transactionShares","label":"F14","text":"The shares were sold as follows: 534 by BV 2014, 18 by AM BV2014, 337 by BV 2018 and 7 by AM BV2018."},{"field":"price","element":"transactionPricePerShare","label":"F15","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $35.30 to $35.77 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F16","text":"The shares are held as follows: 1,683,815 by BV 2014, 97,289 by BV 2014(B), 57,956 by AM BV2014, 1,063,462 by BV 2018, 48,966 by BV 2018(B) and 21,000 by AM BV2018.  Each of the Reporting Persons disclaims beneficial ownership of the securities herein except to the extent of his or its respective pecuniary interest therein, if any."}],"balance_after":2972488,"source":{"system":"sec-edgar","filing":"0001209191-21-067706","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1134657/000120919121067706/doc4.xml","form_type":"4"}},{"id":2489255,"issuer":{"id":75965,"kind":"organization","name":"iTeos Therapeutics, Inc.","symbol":"ITOS"},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2480,"kind":"person","name":"EVNIN LUKE","position":2,"cik":"0001134657","reported_name":"EVNIN LUKE","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2482,"kind":"person","name":"Foley Todd","position":3,"cik":"0001473930","reported_name":"Foley Todd","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":4,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":6,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":7,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2487,"kind":"organization","name":"MPM BIOVENTURES 2018 (B), L.P.","position":8,"cik":"0001729504","reported_name":"MPM BIOVENTURES 2018 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2488,"kind":"organization","name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","position":9,"cik":"0001734817","reported_name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2021-12-02T23:53:51.000Z","date":"2021-12-01","kind":"sale","acquired":false,"shares":5457,"price":34.61,"value":188866.77,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction effected pursuant to a plan established pursuant to Rule 10b5-1."},{"field":"shares","element":"transactionShares","label":"F11","text":"The shares were sold as follows: 3,251 by BV 2014, 112 by AM BV2014, 2,053 by  BV 2018 and 41 by AM BV2018."},{"field":"price","element":"transactionPricePerShare","label":"F12","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $34.30 to $35.17 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F13","text":"The shares are held as follows: 1,684,349 by BV 2014, 97,289 by BV 2014(B), 57,974 by AM BV2014, 1,063,799 by BV 2018, 48,966 by BV 2018(B) and 21,007 by AM BV2018.  Each of the Reporting Persons disclaims beneficial ownership of the securities herein except to the extent of his or its respective pecuniary interest therein, if any."}],"balance_after":2973384,"source":{"system":"sec-edgar","filing":"0001209191-21-067706","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1134657/000120919121067706/doc4.xml","form_type":"4"}},{"id":2489254,"issuer":{"id":75965,"kind":"organization","name":"iTeos Therapeutics, Inc.","symbol":"ITOS"},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2480,"kind":"person","name":"EVNIN LUKE","position":2,"cik":"0001134657","reported_name":"EVNIN LUKE","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2482,"kind":"person","name":"Foley Todd","position":3,"cik":"0001473930","reported_name":"Foley Todd","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":4,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":6,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":7,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2487,"kind":"organization","name":"MPM BIOVENTURES 2018 (B), L.P.","position":8,"cik":"0001729504","reported_name":"MPM BIOVENTURES 2018 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2488,"kind":"organization","name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","position":9,"cik":"0001734817","reported_name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2021-12-02T23:53:51.000Z","date":"2021-12-01","kind":"sale","acquired":false,"shares":6042,"price":33.82,"value":204340.44,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction effected pursuant to a plan established pursuant to Rule 10b5-1."},{"field":"shares","element":"transactionShares","label":"F8","text":"The shares were sold as follows: 3,600 by BV 2014, 124 by AM BV2014, 2,274 by  BV 2018 and 44 by AM BV2018."},{"field":"price","element":"transactionPricePerShare","label":"F9","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $33.26 to $34.22 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F10","text":"The shares are held as follows: 1,687,600 by BV 2014, 97,289 by BV 2014(B), 58,086 by AM BV2014, 1,065,852 by BV 2018, 48,966 by BV 2018(B) and 21,048 by AM BV2018.  Each of the Reporting Persons disclaims beneficial ownership of the securities herein except to the extent of his or its respective pecuniary interest therein, if any."}],"balance_after":2978841,"source":{"system":"sec-edgar","filing":"0001209191-21-067706","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1134657/000120919121067706/doc4.xml","form_type":"4"}},{"id":2489253,"issuer":{"id":75965,"kind":"organization","name":"iTeos Therapeutics, Inc.","symbol":"ITOS"},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2480,"kind":"person","name":"EVNIN LUKE","position":2,"cik":"0001134657","reported_name":"EVNIN LUKE","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2482,"kind":"person","name":"Foley Todd","position":3,"cik":"0001473930","reported_name":"Foley Todd","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":4,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":6,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":7,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2487,"kind":"organization","name":"MPM BIOVENTURES 2018 (B), L.P.","position":8,"cik":"0001729504","reported_name":"MPM BIOVENTURES 2018 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2488,"kind":"organization","name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","position":9,"cik":"0001734817","reported_name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2021-12-02T23:53:51.000Z","date":"2021-11-30","kind":"sale","acquired":false,"shares":28076,"price":35.19,"value":987994.44,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction effected pursuant to a plan established pursuant to Rule 10b5-1."},{"field":"shares","element":"transactionShares","label":"F5","text":"The shares were sold as follows: 16,733 by BV 2014, 576 by AM BV2014, 10,569 by BV 2018 and 198 by AM BV2018."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $34.93 to $35.465 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F7","text":"The shares are held as follows: 1,691,200 by BV 2014, 97,289 by BV 2014(B), 58,210 by AM BV2014, 1,068,126 by BV 2018, 48,966 by BV 2018(B) and 21,092 by AM BV2018.  Each of the Reporting Persons disclaims beneficial ownership of the securities herein except to the extent of his or its respective pecuniary interest therein, if any."}],"balance_after":2984883,"source":{"system":"sec-edgar","filing":"0001209191-21-067706","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1134657/000120919121067706/doc4.xml","form_type":"4"}},{"id":2489252,"issuer":{"id":75965,"kind":"organization","name":"iTeos Therapeutics, Inc.","symbol":"ITOS"},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2480,"kind":"person","name":"EVNIN LUKE","position":2,"cik":"0001134657","reported_name":"EVNIN LUKE","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2482,"kind":"person","name":"Foley Todd","position":3,"cik":"0001473930","reported_name":"Foley Todd","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":4,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":6,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":7,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2487,"kind":"organization","name":"MPM BIOVENTURES 2018 (B), L.P.","position":8,"cik":"0001729504","reported_name":"MPM BIOVENTURES 2018 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2488,"kind":"organization","name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","position":9,"cik":"0001734817","reported_name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2021-12-02T23:53:51.000Z","date":"2021-11-30","kind":"sale","acquired":false,"shares":5861,"price":34.62,"value":202907.82,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction effected pursuant to a plan established pursuant to Rule 10b5-1."},{"field":"shares","element":"transactionShares","label":"F2","text":"The shares were sold as follows: 3,494 by MPM BioVentures 2014, L.P. (\"BV 2014\"), 120 by MPM Asset Management Investors BV2014 LLC (\"AM BV2014\"), 2,206 by MPM BioVentures 2018, L.P. (\"BV 2018\") and 41 by MPM Asset Management Investors BV2018 LLC (\"AM BV2018\"). MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC (\"BV 2014 LLC\") are the direct and indirect general partners of BV 2014 and BV 2014(B). BV 2014 LLC is the manager of AM BV2014. MPM BioVentures 2018 GP LLC and MPM BioVentures 2018 LLC (\"BV 2018 LLC\") are the direct and indirect general partners of BV 2018 and BV 2018(B). BV 2018 LLC is the manager of AM BV2018. Messrs. Evnin and Foley are managing directors of BV 2014 LLC and BV 2018 LLC."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $33.93 to $34.92 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"The shares are held as follows: 1,707,933 by BV 2014, 97,289 by, 58,786 by AM BV2014, 1,078,695 by BV 2018, 48,966 by BV 2018(B) and 21,290 by AM BV2018.  Each of the Reporting Persons disclaims beneficial ownership of the securities herein except to the extent of his or its respective pecuniary interest therein, if any."}],"balance_after":3012959,"source":{"system":"sec-edgar","filing":"0001209191-21-067706","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1134657/000120919121067706/doc4.xml","form_type":"4"}},{"id":2492298,"issuer":{"id":75965,"kind":"organization","name":"iTeos Therapeutics, Inc.","symbol":"ITOS"},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2480,"kind":"person","name":"EVNIN LUKE","position":2,"cik":"0001134657","reported_name":"EVNIN LUKE","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2482,"kind":"person","name":"Foley Todd","position":3,"cik":"0001473930","reported_name":"Foley Todd","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":4,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":6,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":7,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2487,"kind":"organization","name":"MPM BIOVENTURES 2018 (B), L.P.","position":8,"cik":"0001729504","reported_name":"MPM BIOVENTURES 2018 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2488,"kind":"organization","name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","position":9,"cik":"0001734817","reported_name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2021-11-30T21:53:46.000Z","date":"2021-11-29","kind":"sale","acquired":false,"shares":298,"price":35.37,"value":10540.26,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction effected pursuant to a plan established pursuant to Rule 10b5-1."},{"field":"shares","element":"transactionShares","label":"F11","text":"The shares were sold as follows: 178 by BV 2014, 6 by AM BV2014, 112 by  BV 2018 and 2 by AM BV2018."},{"field":"price","element":"transactionPricePerShare","label":"F12","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $35.125 to $35.67 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F13","text":"The shares are held as follows: 1,711,427 by BV 2014, 97,289 by BV 2014(B), 58,906 by AM BV2014, 1,080,901 by BV 2018, 48,966 by BV 2018(B) and 21,331 by AM BV2018.  Each of the Reporting Persons disclaims beneficial ownership of the securities herein except to the extent of his or its respective pecuniary interest therein, if any."}],"balance_after":3018820,"source":{"system":"sec-edgar","filing":"0001209191-21-067148","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1134657/000120919121067148/doc4.xml","form_type":"4"}},{"id":2492297,"issuer":{"id":75965,"kind":"organization","name":"iTeos Therapeutics, Inc.","symbol":"ITOS"},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2480,"kind":"person","name":"EVNIN LUKE","position":2,"cik":"0001134657","reported_name":"EVNIN LUKE","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2482,"kind":"person","name":"Foley Todd","position":3,"cik":"0001473930","reported_name":"Foley Todd","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":4,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":6,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":7,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2487,"kind":"organization","name":"MPM BIOVENTURES 2018 (B), L.P.","position":8,"cik":"0001729504","reported_name":"MPM BIOVENTURES 2018 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2488,"kind":"organization","name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","position":9,"cik":"0001734817","reported_name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2021-11-30T21:53:46.000Z","date":"2021-11-29","kind":"sale","acquired":false,"shares":10073,"price":34.46,"value":347115.58,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction effected pursuant to a plan established pursuant to Rule 10b5-1."},{"field":"shares","element":"transactionShares","label":"F8","text":"The shares were sold as follows: 6,001 by BV 2014, 207 by AM BV2014, 3,790 by  BV 2018 and 75 by AM BV2018."},{"field":"price","element":"transactionPricePerShare","label":"F9","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $34.06 to $34.86 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F10","text":"The shares are held as follows: 1,711,605 by BV 2014, 97,289 by BV 2014(B), 58,912 by AM BV2014, 1,081,013 by BV 2018, 48,966 by BV 2018(B) and 21,333 by AM BV2018.  Each of the Reporting Persons disclaims beneficial ownership of the securities herein except to the extent of his or its respective pecuniary interest therein, if any."}],"balance_after":3019118,"source":{"system":"sec-edgar","filing":"0001209191-21-067148","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1134657/000120919121067148/doc4.xml","form_type":"4"}},{"id":2492296,"issuer":{"id":75965,"kind":"organization","name":"iTeos Therapeutics, Inc.","symbol":"ITOS"},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2480,"kind":"person","name":"EVNIN LUKE","position":2,"cik":"0001134657","reported_name":"EVNIN LUKE","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2482,"kind":"person","name":"Foley Todd","position":3,"cik":"0001473930","reported_name":"Foley Todd","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":4,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":6,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":7,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2487,"kind":"organization","name":"MPM BIOVENTURES 2018 (B), L.P.","position":8,"cik":"0001729504","reported_name":"MPM BIOVENTURES 2018 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2488,"kind":"organization","name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","position":9,"cik":"0001734817","reported_name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2021-11-30T21:53:46.000Z","date":"2021-11-26","kind":"sale","acquired":false,"shares":6129,"price":36.03,"value":220827.87,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction effected pursuant to a plan established pursuant to Rule 10b5-1."},{"field":"shares","element":"transactionShares","label":"F5","text":"The shares were sold as follows: 3,652 by BV 2014, 126 by AM BV2014, 2,306 by BV 2018 and 45 by AM BV2018."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $35.92 to $36.39 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F7","text":"The shares are held as follows: 1,717,606 by BV 2014, 97,289 by BV 2014(B), 59,119 by AM BV2014, 1,084,803 by BV 2018, 48,966 by BV 2018(B) and 21,408 by AM BV2018.  Each of the Reporting Persons disclaims beneficial ownership of the securities herein except to the extent of his or its respective pecuniary interest therein, if any."}],"balance_after":3029191,"source":{"system":"sec-edgar","filing":"0001209191-21-067148","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1134657/000120919121067148/doc4.xml","form_type":"4"}},{"id":2492295,"issuer":{"id":75965,"kind":"organization","name":"iTeos Therapeutics, Inc.","symbol":"ITOS"},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2480,"kind":"person","name":"EVNIN LUKE","position":2,"cik":"0001134657","reported_name":"EVNIN LUKE","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2482,"kind":"person","name":"Foley Todd","position":3,"cik":"0001473930","reported_name":"Foley Todd","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":4,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":6,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":7,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2487,"kind":"organization","name":"MPM BIOVENTURES 2018 (B), L.P.","position":8,"cik":"0001729504","reported_name":"MPM BIOVENTURES 2018 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2488,"kind":"organization","name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","position":9,"cik":"0001734817","reported_name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2021-11-30T21:53:46.000Z","date":"2021-11-26","kind":"sale","acquired":false,"shares":6545,"price":35.49,"value":232282.05,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction effected pursuant to a plan established pursuant to Rule 10b5-1."},{"field":"shares","element":"transactionShares","label":"F2","text":"The shares were sold as follows: 3,899 by MPM BioVentures 2014, L.P. (\"BV 2014\"), 134 by MPM Asset Management Investors BV2014 LLC (\"AM BV2014\"), 2,463 by MPM BioVentures 2018, L.P. (\"BV 2018\") and 49 by MPM Asset Management Investors BV2018 LLC (\"AM BV2018\"). MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC (\"BV 2014 LLC\") are the direct and indirect general partners of BV 2014 and BV 2014(B). BV 2014 LLC is the manager of AM BV2014. MPM BioVentures 2018 GP LLC and MPM BioVentures 2018 LLC (\"BV 2018 LLC\") are the direct and indirect general partners of BV 2018 and BV 2018(B). BV 2018 LLC is the manager of AM BV2018. Messrs. Evnin and Foley are managing directors of BV 2014 LLC and BV 2018 LLC."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $34.915 to $35.91 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"The shares are held as follows: 1,721,258 by BV 2014, 97,289 by, 59,245 by AM BV2014, 1,087,109 by BV 2018, 48,966 by BV 2018(B) and 21,453 by AM BV2018.  Each of the Reporting Persons disclaims beneficial ownership of the securities herein except to the extent of his or its respective pecuniary interest therein, if any."}],"balance_after":3035320,"source":{"system":"sec-edgar","filing":"0001209191-21-067148","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1134657/000120919121067148/doc4.xml","form_type":"4"}},{"id":2496196,"issuer":{"id":75965,"kind":"organization","name":"iTeos Therapeutics, Inc.","symbol":"ITOS"},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2480,"kind":"person","name":"EVNIN LUKE","position":2,"cik":"0001134657","reported_name":"EVNIN LUKE","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2482,"kind":"person","name":"Foley Todd","position":3,"cik":"0001473930","reported_name":"Foley Todd","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":4,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":6,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":7,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2487,"kind":"organization","name":"MPM BIOVENTURES 2018 (B), L.P.","position":8,"cik":"0001729504","reported_name":"MPM BIOVENTURES 2018 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2488,"kind":"organization","name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","position":9,"cik":"0001734817","reported_name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2021-11-24T23:34:41.000Z","date":"2021-11-24","kind":"sale","acquired":false,"shares":13126,"price":37.02,"value":485924.52,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F4","text":"Transaction effected pursuant to a plan established pursuant to Rule 10b5-1."},{"field":"shares","element":"transactionShares","label":"F23","text":"The shares were sold as follows: 7,820 by BV 2014, 269 by AM BV2014, 4,939 by BV 2018 and 98 by AM BV2018."},{"field":"price","element":"transactionPricePerShare","label":"F24","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $36.85 to $37.27 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F25","text":"The shares are held as follows: 1,725,157 by BV 2014, 97,289 by BV 2014(B), 59,379 by AM BV2014, 1,089,572 by BV 2018, 48,966 by BV 2018(B) and 21,502 by AM BV2018. 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These shares were sold in multiple transactions at prices ranging from $35.83 to $36.81 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F22","text":"The shares are held as follows: 1,732,977 by BV 2014, 97,289 by BV 2014(B), 59,648 by AM BV2014, 1,094,511 by BV 2018, 48,966 by BV 2018(B) and 21,600 by AM BV2018.  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These shares were sold in multiple transactions at prices ranging from $34.82 to $35.78 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F19","text":"The shares are held as follows: 1,743,906 by BV 2014, 97,289 by BV 2014(B), 60,024 by AM BV2014, 1,101,413 by BV 2018, 48,966 by BV 2018(B) and 21,736 by AM BV2018.  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These shares were sold in multiple transactions at prices ranging from $36.48 to $36.52 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F16","text":"The shares are held as follows: 1,746,806  by BV 2014, 97,289 by BV 2014(B), 60,124 by AM BV2014, 1,103,245 by BV 2018, 48,966 by BV 2018(B) and 21,772 by AM BV2018.  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These shares were sold in multiple transactions at prices ranging from $36.58 to $37.555 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F7","text":"The shares are held as follows: 1,765,758 by BV 2014, 97,289 by, 60,776 by AM BV2014, 1,115,215 by BV 2018, 48,966 by BV 2018(B) and 22,009 by AM BV2018.  Each of the Reporting Persons disclaims beneficial ownership of the securities herein except to the extent of his or its respective pecuniary interest therein, if any."}],"balance_after":3110013,"source":{"system":"sec-edgar","filing":"0001209191-21-066852","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1134657/000120919121066852/doc4.xml","form_type":"4"}},{"id":2496189,"issuer":{"id":75965,"kind":"organization","name":"iTeos Therapeutics, Inc.","symbol":"ITOS"},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2480,"kind":"person","name":"EVNIN LUKE","position":2,"cik":"0001134657","reported_name":"EVNIN LUKE","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2482,"kind":"person","name":"Foley Todd","position":3,"cik":"0001473930","reported_name":"Foley Todd","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":4,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":6,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":7,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2487,"kind":"organization","name":"MPM BIOVENTURES 2018 (B), L.P.","position":8,"cik":"0001729504","reported_name":"MPM BIOVENTURES 2018 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2488,"kind":"organization","name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","position":9,"cik":"0001734817","reported_name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2021-11-24T23:34:41.000Z","date":"2021-11-17","kind":"other","acquired":false,"shares":15671,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents a pro rata in-kind distribution from MPM BioVentures 2014(B), L.P. (\"BV 2014(B)\") and MPM BioVentures 2018(B), L.P. (\"BV 2018(B)\") to its respectve limited partners for no consideration."},{"field":"shares","element":"transactionShares","label":"F2","text":"The shares were distributed as follows: 10,424 by BV 2014(B) and 5,247 by BV 2018(B)."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The shares are held as follows: 1,771,303 by MPM BioVentures 2014, L.P. (\"BV 2014\"), 97,289 by BV2014(B), 60,967 by MPM Asset Management Investors BV2014 LLC (\"AM BV2014\"), 1,118,717 by MPM BioVentures 2018, L.P. (\"BV 2018\"), 48,966 by BV 2018(B) and 22,078 by MPM Asset Management Investors BV2018 LLC (\"AM BV2018\"). MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC (\"BV 2014 LLC\") are the direct and indirect general partners of BV 2014 and BV 2014(B). BV 2014 LLC is the manager of AM BV2014. MPM BioVentures 2018 GP LLC and MPM BioVentures 2018 LLC (\"BV 2018 LLC\") are the direct and indirect general partners of BV 2018 and BV 2018(B). BV 2018 LLC is the manager of AM BV2018.  Messrs. Evnin and Foley are managing directors of BV 2014 LLC and BV 2018 LLC. Each of the Reporting Persons disclaims beneficial ownership of the securities herein except to the extent of his or its respective pecuniary interest therein, if any."}],"balance_after":3119320,"source":{"system":"sec-edgar","filing":"0001209191-21-066852","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1134657/000120919121066852/doc4.xml","form_type":"4"}},{"id":2524856,"issuer":{"id":2163,"kind":"organization","name":"Entrada Therapeutics, Inc.","symbol":"TRDA"},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2480,"kind":"person","name":"EVNIN LUKE","position":2,"cik":"0001134657","reported_name":"EVNIN LUKE","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2481,"kind":"person","name":"GADICKE ANSBERT","position":3,"cik":"0001134655","reported_name":"GADICKE ANSBERT","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":4,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":6,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":7,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2487,"kind":"organization","name":"MPM BIOVENTURES 2018 (B), L.P.","position":8,"cik":"0001729504","reported_name":"MPM BIOVENTURES 2018 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2488,"kind":"organization","name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","position":9,"cik":"0001734817","reported_name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Series B Preferred Stock","published_at":"2021-11-04T21:37:19.000Z","date":"2021-11-02","kind":"exercise","acquired":false,"shares":3683241,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each share of the Issuer's Series A Preferred Stock and Series B Preferred Stock automatically converted into one (1) share of the Issuer's Common Stock immediately upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-7.235890014 reverse stock split which became effective on October 22, 2021.  The Series A Preferred Stock and Series B Preferred Stock have no expiration date."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Each share of the Issuer's Series A Preferred Stock and Series B Preferred Stock automatically converted into one (1) share of the Issuer's Common Stock immediately upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-7.235890014 reverse stock split which became effective on October 22, 2021.  The Series A Preferred Stock and Series B Preferred Stock have no expiration date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Each share of the Issuer's Series A Preferred Stock and Series B Preferred Stock automatically converted into one (1) share of the Issuer's Common Stock immediately upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-7.235890014 reverse stock split which became effective on October 22, 2021.  The Series A Preferred Stock and Series B Preferred Stock have no expiration date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Each share of the Issuer's Series A Preferred Stock and Series B Preferred Stock automatically converted into one (1) share of the Issuer's Common Stock immediately upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-7.235890014 reverse stock split which became effective on October 22, 2021.  The Series A Preferred Stock and Series B Preferred Stock have no expiration date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"The shares were converted as follows: 231,139 by BV 2014, 15,417 by BV 2014(B), 7,956 by AM BV2014, 237,222 by BV 2018, 12,608  by BV 2018(B) and 4,682 by AM BV2018."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":509024},"source":{"system":"sec-edgar","filing":"0001209191-21-062982","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1134655/000120919121062982/doc4.xml","form_type":"4"}},{"id":2524855,"issuer":{"id":2163,"kind":"organization","name":"Entrada Therapeutics, Inc.","symbol":"TRDA"},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2480,"kind":"person","name":"EVNIN LUKE","position":2,"cik":"0001134657","reported_name":"EVNIN LUKE","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2481,"kind":"person","name":"GADICKE ANSBERT","position":3,"cik":"0001134655","reported_name":"GADICKE ANSBERT","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":4,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":6,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":7,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2487,"kind":"organization","name":"MPM BIOVENTURES 2018 (B), L.P.","position":8,"cik":"0001729504","reported_name":"MPM BIOVENTURES 2018 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2488,"kind":"organization","name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","position":9,"cik":"0001734817","reported_name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Series A Preferred Stock","published_at":"2021-11-04T21:37:19.000Z","date":"2021-11-02","kind":"exercise","acquired":false,"shares":27617675,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each share of the Issuer's Series A Preferred Stock and Series B Preferred Stock automatically converted into one (1) share of the Issuer's Common Stock immediately upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-7.235890014 reverse stock split which became effective on October 22, 2021.  The Series A Preferred Stock and Series B Preferred Stock have no expiration date."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Each share of the Issuer's Series A Preferred Stock and Series B Preferred Stock automatically converted into one (1) share of the Issuer's Common Stock immediately upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-7.235890014 reverse stock split which became effective on October 22, 2021.  The Series A Preferred Stock and Series B Preferred Stock have no expiration date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Each share of the Issuer's Series A Preferred Stock and Series B Preferred Stock automatically converted into one (1) share of the Issuer's Common Stock immediately upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-7.235890014 reverse stock split which became effective on October 22, 2021.  The Series A Preferred Stock and Series B Preferred Stock have no expiration date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Each share of the Issuer's Series A Preferred Stock and Series B Preferred Stock automatically converted into one (1) share of the Issuer's Common Stock immediately upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-7.235890014 reverse stock split which became effective on October 22, 2021.  The Series A Preferred Stock and Series B Preferred Stock have no expiration date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"The shares were converted as follows: 1,733,129 by MPM BioVentures 2014, L.P. (\"BV 2014\"), 115,596 by MPM BioVentures 2014(B), L.P. (\"BV 2014(B)\"), 59,655 by MPM Asset Management Investors BV2014 LLC (\"AM BV2014\"), 1,778,737 by MPM BioVentures 2018, L.P. (\"BV 2018\"), 94,538 by MPM BioVentures 2018 (B), L.P. (\"BV 2018(B)\") and 35,105 by MPM Asset Management Investors BV2018 LLC (\"AM BV2018\"). MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC (\"BV2014 LLC\") are the direct and indirect general partners of BV 2014 and BV 2014(B). BV2014 LLC is the manager of AM BV2014. MPM BioVentures 2018 GP LLC and MPM BioVentures 2018 LLC (\"BV2018 LLC\") are the direct and indirect general partners of BV 2018 and BV 2018(B). BV 2018 LLC is the manager of AM BV2018. Messrs. Evnin and Gadicke are managing directors of BV 2014 LLC and BV 2018 LLC.\n.."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":3816760},"source":{"system":"sec-edgar","filing":"0001209191-21-062982","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1134655/000120919121062982/doc4.xml","form_type":"4"}},{"id":2524854,"issuer":{"id":2163,"kind":"organization","name":"Entrada Therapeutics, Inc.","symbol":"TRDA"},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2480,"kind":"person","name":"EVNIN LUKE","position":2,"cik":"0001134657","reported_name":"EVNIN LUKE","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2481,"kind":"person","name":"GADICKE ANSBERT","position":3,"cik":"0001134655","reported_name":"GADICKE ANSBERT","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":4,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":6,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":7,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2487,"kind":"organization","name":"MPM BIOVENTURES 2018 (B), L.P.","position":8,"cik":"0001729504","reported_name":"MPM BIOVENTURES 2018 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2488,"kind":"organization","name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","position":9,"cik":"0001734817","reported_name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2021-11-04T21:37:19.000Z","date":"2021-11-02","kind":"purchase","acquired":true,"shares":100000,"price":20,"value":2000000.0,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F7","text":"The shares were purchased as follows: 45,408 by BV 2014, 3,029 by BV 2014(B), 1,563 by AM BV2014, 46,603 by BV 2018, 2,477 by BV 2018(B) and 920 by AM BV2018."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its respective pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F8","text":"The shares are held as follows: 2,009,676 by BV 2014, 134,042 by BV 2014(B), 69,174 by AM BV2014, 2,062,562 by BV 2018, 109,623 by BV 2018(B) and 40,707 by AM BV2018."}],"balance_after":4425784,"source":{"system":"sec-edgar","filing":"0001209191-21-062982","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1134655/000120919121062982/doc4.xml","form_type":"4"}},{"id":2524853,"issuer":{"id":2163,"kind":"organization","name":"Entrada Therapeutics, Inc.","symbol":"TRDA"},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2480,"kind":"person","name":"EVNIN LUKE","position":2,"cik":"0001134657","reported_name":"EVNIN LUKE","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2481,"kind":"person","name":"GADICKE ANSBERT","position":3,"cik":"0001134655","reported_name":"GADICKE ANSBERT","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":4,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":6,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":7,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2487,"kind":"organization","name":"MPM BIOVENTURES 2018 (B), L.P.","position":8,"cik":"0001729504","reported_name":"MPM BIOVENTURES 2018 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2488,"kind":"organization","name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","position":9,"cik":"0001734817","reported_name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2021-11-04T21:37:19.000Z","date":"2021-11-02","kind":"exercise","acquired":true,"shares":509024,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F5","text":"The shares were converted as follows: 231,139 by BV 2014, 15,417 by BV 2014(B), 7,956 by AM BV2014, 237,222 by BV 2018, 12,608  by BV 2018(B) and 4,682 by AM BV2018."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Each share of the Issuer's Series A Preferred Stock and Series B Preferred Stock automatically converted into one (1) share of the Issuer's Common Stock immediately upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-7.235890014 reverse stock split which became effective on October 22, 2021.  The Series A Preferred Stock and Series B Preferred Stock have no expiration date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its respective pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F6","text":"The shares are held as follows: 1,964,268 by BV 2014, 131,013 by BV 2014(B), 67,611 by AM BV2014, 2,015,959 by BV 2018, 107,146 by BV 2018(B) and 39,787 by AM BV2018."}],"balance_after":4325784,"source":{"system":"sec-edgar","filing":"0001209191-21-062982","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1134655/000120919121062982/doc4.xml","form_type":"4"}},{"id":2524852,"issuer":{"id":2163,"kind":"organization","name":"Entrada Therapeutics, Inc.","symbol":"TRDA"},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2480,"kind":"person","name":"EVNIN LUKE","position":2,"cik":"0001134657","reported_name":"EVNIN LUKE","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2481,"kind":"person","name":"GADICKE ANSBERT","position":3,"cik":"0001134655","reported_name":"GADICKE ANSBERT","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":4,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":6,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":7,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2487,"kind":"organization","name":"MPM BIOVENTURES 2018 (B), L.P.","position":8,"cik":"0001729504","reported_name":"MPM BIOVENTURES 2018 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2488,"kind":"organization","name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","position":9,"cik":"0001734817","reported_name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2021-11-04T21:37:19.000Z","date":"2021-11-02","kind":"exercise","acquired":true,"shares":3816760,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The shares were converted as follows: 1,733,129 by MPM BioVentures 2014, L.P. (\"BV 2014\"), 115,596 by MPM BioVentures 2014(B), L.P. (\"BV 2014(B)\"), 59,655 by MPM Asset Management Investors BV2014 LLC (\"AM BV2014\"), 1,778,737 by MPM BioVentures 2018, L.P. (\"BV 2018\"), 94,538 by MPM BioVentures 2018 (B), L.P. (\"BV 2018(B)\") and 35,105 by MPM Asset Management Investors BV2018 LLC (\"AM BV2018\"). MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC (\"BV2014 LLC\") are the direct and indirect general partners of BV 2014 and BV 2014(B). BV2014 LLC is the manager of AM BV2014. MPM BioVentures 2018 GP LLC and MPM BioVentures 2018 LLC (\"BV2018 LLC\") are the direct and indirect general partners of BV 2018 and BV 2018(B). BV 2018 LLC is the manager of AM BV2018. Messrs. Evnin and Gadicke are managing directors of BV 2014 LLC and BV 2018 LLC.\n.."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Each share of the Issuer's Series A Preferred Stock and Series B Preferred Stock automatically converted into one (1) share of the Issuer's Common Stock immediately upon the closing of the Issuer's initial public offering. These amounts reflect a 1-for-7.235890014 reverse stock split which became effective on October 22, 2021.  The Series A Preferred Stock and Series B Preferred Stock have no expiration date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The shares are held as follows: 1,733,129 by BV 2014, 115,596 by BV 2014(B), 59,655 by AM BV2014, 1,778,737 by BV 2018, 94,538 by BV 2018(B) and 35,105 by AM BV2018."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Each Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its respective pecuniary interest therein."}],"balance_after":3816760,"source":{"system":"sec-edgar","filing":"0001209191-21-062982","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1134655/000120919121062982/doc4.xml","form_type":"4"}},{"id":2540782,"issuer":{"id":75965,"kind":"organization","name":"iTeos Therapeutics, Inc.","symbol":"ITOS"},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2480,"kind":"person","name":"EVNIN LUKE","position":2,"cik":"0001134657","reported_name":"EVNIN LUKE","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2482,"kind":"person","name":"Foley Todd","position":3,"cik":"0001473930","reported_name":"Foley Todd","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":4,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":6,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":7,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2487,"kind":"organization","name":"MPM BIOVENTURES 2018 (B), L.P.","position":8,"cik":"0001729504","reported_name":"MPM BIOVENTURES 2018 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2488,"kind":"organization","name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","position":9,"cik":"0001734817","reported_name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2021-10-18T20:34:38.000Z","date":"2021-10-18","kind":"sale","acquired":false,"shares":6167,"price":27.14,"value":167372.38,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction effected pursuant to a plan established pursuant to Rule 10b5-1."},{"field":"shares","element":"transactionShares","label":"F8","text":"The shares were sold as follows: 3,676 by BV 2014, 125 by AM BV2014, 2,321 by  BV 2018 and 45 by AM BV2018."},{"field":"price","element":"transactionPricePerShare","label":"F9","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $26.96 to $27.94 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F10","text":"The shares are held as follows: 1,771,303 by BV 2014, 107,713 by BV 2014(B), 60,967 by AM BV2014, 1,118,717 by BV 2018, 54,213 by BV 2018(B) and 22,078 by AM BV2018. The Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its respective pecuniary interest therein."}],"balance_after":3134991,"source":{"system":"sec-edgar","filing":"0001209191-21-060723","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1134657/000120919121060723/doc4.xml","form_type":"4"}},{"id":2540781,"issuer":{"id":75965,"kind":"organization","name":"iTeos Therapeutics, Inc.","symbol":"ITOS"},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2480,"kind":"person","name":"EVNIN LUKE","position":2,"cik":"0001134657","reported_name":"EVNIN LUKE","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2482,"kind":"person","name":"Foley Todd","position":3,"cik":"0001473930","reported_name":"Foley Todd","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":4,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":6,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":7,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2487,"kind":"organization","name":"MPM BIOVENTURES 2018 (B), L.P.","position":8,"cik":"0001729504","reported_name":"MPM BIOVENTURES 2018 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2488,"kind":"organization","name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","position":9,"cik":"0001734817","reported_name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2021-10-18T20:34:38.000Z","date":"2021-10-15","kind":"sale","acquired":false,"shares":2039,"price":28.01,"value":57112.39,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction effected pursuant to a plan established pursuant to Rule 10b5-1."},{"field":"shares","element":"transactionShares","label":"F5","text":"The shares were sold as follows: 1,215 by BV 2014, 42 by AM BV2014, 767 by BV 2018 and 15 by AM BV2018."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $27.97 to $28.07 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F7","text":"The shares are held as follows: 1,774,979 by BV 2014, 107,713 by BV 2014(B), 61,092 by AM BV2014, 1,121,038 by BV 2018, 54,213 by BV 2018(B) and 22,123 by AM BV2018. Each of the Reporting Persons disclaims beneficial ownership of the securities herein except to the extent of his or its respective pecuniary interest therein, if any."}],"balance_after":3141158,"source":{"system":"sec-edgar","filing":"0001209191-21-060723","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1134657/000120919121060723/doc4.xml","form_type":"4"}},{"id":2540780,"issuer":{"id":75965,"kind":"organization","name":"iTeos Therapeutics, Inc.","symbol":"ITOS"},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2480,"kind":"person","name":"EVNIN LUKE","position":2,"cik":"0001134657","reported_name":"EVNIN LUKE","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2482,"kind":"person","name":"Foley Todd","position":3,"cik":"0001473930","reported_name":"Foley Todd","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":4,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":6,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":7,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2487,"kind":"organization","name":"MPM BIOVENTURES 2018 (B), L.P.","position":8,"cik":"0001729504","reported_name":"MPM BIOVENTURES 2018 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2488,"kind":"organization","name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","position":9,"cik":"0001734817","reported_name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2021-10-18T20:34:38.000Z","date":"2021-10-15","kind":"sale","acquired":false,"shares":8893,"price":27.53,"value":244824.29,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction effected pursuant to a plan established pursuant to Rule 10b5-1."},{"field":"shares","element":"transactionShares","label":"F2","text":"The shares were sold as follows: 5,298 by MPM BioVentures 2014, L.P. (\"BV 2014\"), 182 by MPM Asset Management Investors BV2014 LLC (\"AM BV2014\"), 3,347 by MPM BioVentures 2018, L.P. (\"BV 2018\") and 66 by MPM Asset Management Investors BV2018 LLC (\"AM BV2018\"). MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC (\"BV 2014 LLC\") are the direct and indirect general partners of BV 2014 and BV 2014(B). BV 2014 LLC is the manager of AM BV2014. MPM BioVentures 2018 GP LLC and MPM BioVentures 2018 LLC (\"BV 2018 LLC\") are the direct and indirect general partners of BV 2018 and BV 2018(B). BV 2018 LLC is the manager of AM BV2018. Messrs. Evnin and Foley are managing directors of BV 2014 LLC and BV 2018 LLC."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $26.97 to $27.955 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"The shares are held as follows: 1,776,194 by BV 2014, 107,713 by MPM BioVentures 2014(B), L.P. (\"BV 2014(B)\"), 61,134 by AM BV2014, 1,121,805 by BV 2018, 54,213 by MPM BioVentures 2018(B), L.P. (\"BV 2018(B)\") and 22,138 by AM BV2018. The Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its respective pecuniary interest therein."}],"balance_after":3143197,"source":{"system":"sec-edgar","filing":"0001209191-21-060723","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1134657/000120919121060723/doc4.xml","form_type":"4"}},{"id":2542621,"issuer":{"id":75965,"kind":"organization","name":"iTeos Therapeutics, Inc.","symbol":"ITOS"},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2480,"kind":"person","name":"EVNIN LUKE","position":2,"cik":"0001134657","reported_name":"EVNIN LUKE","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2482,"kind":"person","name":"Foley Todd","position":3,"cik":"0001473930","reported_name":"Foley Todd","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":4,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":6,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":7,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2487,"kind":"organization","name":"MPM BIOVENTURES 2018 (B), L.P.","position":8,"cik":"0001729504","reported_name":"MPM BIOVENTURES 2018 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2488,"kind":"organization","name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","position":9,"cik":"0001734817","reported_name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2021-10-14T21:27:33.000Z","date":"2021-10-14","kind":"sale","acquired":false,"shares":27320,"price":27.3,"value":745836.0,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction effected pursuant to a plan established pursuant to Rule 10b5-1."},{"field":"shares","element":"transactionShares","label":"F8","text":"The shares were sold as follows: 16,277 by BV 2014, 560 by AM BV2014, 10,280 by  BV 2018 and 203 by AM BV2018."},{"field":"price","element":"transactionPricePerShare","label":"F9","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $26.95 to $27.84 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F10","text":"The shares are held as follows: 1,781,492 by BV 2014, 107,713 by BV 2014(B), 61,316 by AM BV2014, 1,125,152 by BV 2018, 54,213 by BV 2018(B) and 22,204 by AM BV2018. The Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its respective pecuniary interest therein."}],"balance_after":3152090,"source":{"system":"sec-edgar","filing":"0001209191-21-060490","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1134657/000120919121060490/doc4.xml","form_type":"4"}},{"id":2542620,"issuer":{"id":75965,"kind":"organization","name":"iTeos Therapeutics, Inc.","symbol":"ITOS"},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2480,"kind":"person","name":"EVNIN LUKE","position":2,"cik":"0001134657","reported_name":"EVNIN LUKE","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2482,"kind":"person","name":"Foley Todd","position":3,"cik":"0001473930","reported_name":"Foley Todd","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":4,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":6,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":7,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2487,"kind":"organization","name":"MPM BIOVENTURES 2018 (B), L.P.","position":8,"cik":"0001729504","reported_name":"MPM BIOVENTURES 2018 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2488,"kind":"organization","name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","position":9,"cik":"0001734817","reported_name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2021-10-14T21:27:33.000Z","date":"2021-10-13","kind":"sale","acquired":false,"shares":20929,"price":27.13,"value":567803.77,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction effected pursuant to a plan established pursuant to Rule 10b5-1."},{"field":"shares","element":"transactionShares","label":"F5","text":"The shares were sold as follows: 12,469 by BV 2014, 429 by AM BV2014, 7,875 by BV 2018 and 156 by AM BV2018."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $26.95 to $27.335 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F7","text":"The shares are held as follows: 1,797,769 by BV 2014, 107,713 by BV 2014(B), 61,876 by AM BV2014, 1,135,432 by BV 2018, 54,213 by BV 2018(B) and 22,407 by AM BV2018. Each of the Reporting Persons disclaims beneficial ownership of the securities herein except to the extent of his or its respective pecuniary interest therein, if any."}],"balance_after":3179410,"source":{"system":"sec-edgar","filing":"0001209191-21-060490","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1134657/000120919121060490/doc4.xml","form_type":"4"}},{"id":2542619,"issuer":{"id":75965,"kind":"organization","name":"iTeos Therapeutics, Inc.","symbol":"ITOS"},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2480,"kind":"person","name":"EVNIN LUKE","position":2,"cik":"0001134657","reported_name":"EVNIN LUKE","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2482,"kind":"person","name":"Foley Todd","position":3,"cik":"0001473930","reported_name":"Foley Todd","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":4,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":6,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":7,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2487,"kind":"organization","name":"MPM BIOVENTURES 2018 (B), L.P.","position":8,"cik":"0001729504","reported_name":"MPM BIOVENTURES 2018 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2488,"kind":"organization","name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","position":9,"cik":"0001734817","reported_name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2021-10-14T21:27:33.000Z","date":"2021-10-12","kind":"sale","acquired":false,"shares":8521,"price":27.09,"value":230833.89,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction effected pursuant to a plan established pursuant to Rule 10b5-1."},{"field":"shares","element":"transactionShares","label":"F2","text":"The shares were sold as follows: 5,077 by MPM BioVentures 2014, L.P. (\"BV 2014\"), 175 by MPM Asset Management Investors BV2014 LLC (\"AM BV2014\"), 3,206 by MPM BioVentures 2018, L.P. (\"BV 2018\") and 63 by MPM Asset Management Investors BV2018 LLC (\"AM BV2018\"). MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC (\"BV 2014 LLC\") are the direct and indirect general partners of BV 2014 and BV 2014(B). BV 2014 LLC is the manager of AM BV2014. MPM BioVentures 2018 GP LLC and MPM BioVentures 2018 LLC (\"BV 2018 LLC\") are the direct and indirect general partners of BV 2018 and BV 2018(B). BV 2018 LLC is the manager of AM BV2018. Messrs. Evnin and Foley are managing directors of BV 2014 LLC and BV 2018 LLC."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $26.95 to $27.28 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"The shares are held as follows: 1,810,238, by BV 2014, 107,713 by MPM BioVentures 2014(B), L.P. (\"BV 2014(B)\"), 62,305 by AM BV2014, 1,143,307 by BV 2018, 54,213 by MPM BioVentures 2018(B), L.P. (\"BV 2018(B)\") and 22,563 by AM BV2018. The Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its respective pecuniary interest therein."}],"balance_after":3200339,"source":{"system":"sec-edgar","filing":"0001209191-21-060490","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1134657/000120919121060490/doc4.xml","form_type":"4"}},{"id":2544705,"issuer":{"id":75965,"kind":"organization","name":"iTeos Therapeutics, Inc.","symbol":"ITOS"},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2480,"kind":"person","name":"EVNIN LUKE","position":2,"cik":"0001134657","reported_name":"EVNIN LUKE","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2482,"kind":"person","name":"Foley Todd","position":3,"cik":"0001473930","reported_name":"Foley Todd","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":4,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":6,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":7,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2487,"kind":"organization","name":"MPM BIOVENTURES 2018 (B), L.P.","position":8,"cik":"0001729504","reported_name":"MPM BIOVENTURES 2018 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2488,"kind":"organization","name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","position":9,"cik":"0001734817","reported_name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2021-10-12T20:34:14.000Z","date":"2021-10-11","kind":"sale","acquired":false,"shares":48812,"price":27.24,"value":1329638.88,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction effected pursuant to a plan established pursuant to Rule 10b5-1."},{"field":"shares","element":"transactionShares","label":"F8","text":"The shares were sold as follows: 29,081 by BV 2014, 1,001 by AM BV2014, 18,367 by  BV 2018 and 363 by AM BV2018."},{"field":"price","element":"transactionPricePerShare","label":"F9","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $26.95 to $27.53 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F10","text":"The shares are held as follows: 1,815,315 by BV 2014, 107,713 by BV 2014(B), 62,480 by AM BV2014, 1,146,513 by BV 2018, 54,213 by BV 2018(B) and 22,626 by AM BV2018. The Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its respective pecuniary interest therein."}],"balance_after":3208860,"source":{"system":"sec-edgar","filing":"0001209191-21-060236","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1134657/000120919121060236/doc4.xml","form_type":"4"}},{"id":2544704,"issuer":{"id":75965,"kind":"organization","name":"iTeos Therapeutics, Inc.","symbol":"ITOS"},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2480,"kind":"person","name":"EVNIN LUKE","position":2,"cik":"0001134657","reported_name":"EVNIN LUKE","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2482,"kind":"person","name":"Foley Todd","position":3,"cik":"0001473930","reported_name":"Foley Todd","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":4,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":6,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":7,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2487,"kind":"organization","name":"MPM BIOVENTURES 2018 (B), L.P.","position":8,"cik":"0001729504","reported_name":"MPM BIOVENTURES 2018 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2488,"kind":"organization","name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","position":9,"cik":"0001734817","reported_name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2021-10-12T20:34:14.000Z","date":"2021-10-08","kind":"sale","acquired":false,"shares":2032,"price":27.01,"value":54884.32,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction effected pursuant to a plan established pursuant to Rule 10b5-1."},{"field":"shares","element":"transactionShares","label":"F5","text":"The shares were sold as follows: 1,210 by BV 2014, 42 by AM BV2014, 765 by BV 2018 and 15 by AM BV2018."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $26.97 to $27.035 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F7","text":"The shares are held as follows: 1,844,396 by BV 2014, 107,713 by BV 2014(B), 63,481 by AM BV2014, 1,164,880 by BV 2018, 54,213 by BV 2018(B) and 22,989 by AM BV2018. Each of the Reporting Persons disclaims beneficial ownership of the securities herein except to the extent of his or its respective pecuniary interest therein, if any."}],"balance_after":3257672,"source":{"system":"sec-edgar","filing":"0001209191-21-060236","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1134657/000120919121060236/doc4.xml","form_type":"4"}},{"id":2544703,"issuer":{"id":75965,"kind":"organization","name":"iTeos Therapeutics, Inc.","symbol":"ITOS"},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2480,"kind":"person","name":"EVNIN LUKE","position":2,"cik":"0001134657","reported_name":"EVNIN LUKE","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2482,"kind":"person","name":"Foley Todd","position":3,"cik":"0001473930","reported_name":"Foley Todd","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":4,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":6,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":7,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2487,"kind":"organization","name":"MPM BIOVENTURES 2018 (B), L.P.","position":8,"cik":"0001729504","reported_name":"MPM BIOVENTURES 2018 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2488,"kind":"organization","name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","position":9,"cik":"0001734817","reported_name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2021-10-12T20:34:14.000Z","date":"2021-10-07","kind":"sale","acquired":false,"shares":1149,"price":27,"value":31023.0,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction effected pursuant to a plan established pursuant to Rule 10b5-1."},{"field":"shares","element":"transactionShares","label":"F2","text":"The shares were sold as follows: 684 by MPM BioVentures 2014, L.P. (\"BV 2014\"), 24 by MPM Asset Management Investors BV2014 LLC (\"AM BV2014\"), 432 by MPM BioVentures 2018, L.P. (\"BV 2018\") and 9 by MPM Asset Management Investors BV2018 LLC (\"AM BV2018\"). MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC (\"BV 2014 LLC\") are the direct and indirect general partners of BV 2014 and BV 2014(B). BV 2014 LLC is the manager of AM BV2014. MPM BioVentures 2018 GP LLC and MPM BioVentures 2018 LLC (\"BV 2018 LLC\") are the direct and indirect general partners of BV 2018 and BV 2018(B). BV 2018 LLC is the manager of AM BV2018. Messrs. Evnin and Foley are managing directors of BV 2014 LLC and BV 2018 LLC."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $26.95 to $27.07 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"The shares are held as follows: 1,845,606 ,by BV 2014, 107,713 by MPM BioVentures 2014(B), L.P. (\"BV 2014(B)\"), 63,523 by AM BV2014, 1,165,645 by BV 2018, 54,213 by MPM BioVentures 2018(B), L.P. (\"BV 2018(B)\") and 23,004 by AM BV2018. The Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its respective pecuniary interest therein."}],"balance_after":3259704,"source":{"system":"sec-edgar","filing":"0001209191-21-060236","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1134657/000120919121060236/doc4.xml","form_type":"4"}},{"id":2549669,"issuer":{"id":75965,"kind":"organization","name":"iTeos Therapeutics, Inc.","symbol":"ITOS"},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2480,"kind":"person","name":"EVNIN LUKE","position":2,"cik":"0001134657","reported_name":"EVNIN LUKE","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2482,"kind":"person","name":"Foley Todd","position":3,"cik":"0001473930","reported_name":"Foley Todd","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":4,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":6,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":7,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2487,"kind":"organization","name":"MPM BIOVENTURES 2018 (B), L.P.","position":8,"cik":"0001729504","reported_name":"MPM BIOVENTURES 2018 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2488,"kind":"organization","name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","position":9,"cik":"0001734817","reported_name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2021-10-05T20:32:38.000Z","date":"2021-10-04","kind":"sale","acquired":false,"shares":20711,"price":27.06,"value":560439.66,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction effected pursuant to a plan established pursuant to Rule 10b5-1."},{"field":"shares","element":"transactionShares","label":"F5","text":"The shares were sold as follows: 12,339 by BV 2014, 425 by AM BV2014, 7,793 by BV 2018 and 154 by AM BV2018."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $26.95 to $27.19 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F7","text":"The shares are held as follows: 1,846,290 by BV 2014, 107,713 by BV 2014(B), 63,547 by AM BV2014, 1,166,077 by BV 2018, 54,213 by BV 2018(B) and 23,013 by AM BV2018. Each of the Reporting Persons disclaims beneficial ownership of the securities herein except to the extent of his or its respective pecuniary interest therein, if any."}],"balance_after":3260853,"source":{"system":"sec-edgar","filing":"0001209191-21-059426","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1134657/000120919121059426/doc4.xml","form_type":"4"}},{"id":2549668,"issuer":{"id":75965,"kind":"organization","name":"iTeos Therapeutics, Inc.","symbol":"ITOS"},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2480,"kind":"person","name":"EVNIN LUKE","position":2,"cik":"0001134657","reported_name":"EVNIN LUKE","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2482,"kind":"person","name":"Foley Todd","position":3,"cik":"0001473930","reported_name":"Foley Todd","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":4,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":6,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":7,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2487,"kind":"organization","name":"MPM BIOVENTURES 2018 (B), L.P.","position":8,"cik":"0001729504","reported_name":"MPM BIOVENTURES 2018 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2488,"kind":"organization","name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","position":9,"cik":"0001734817","reported_name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2021-10-05T20:32:38.000Z","date":"2021-10-01","kind":"sale","acquired":false,"shares":6855,"price":27,"value":185085.0,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction effected pursuant to a plan established pursuant to Rule 10b5-1."},{"field":"shares","element":"transactionShares","label":"F2","text":"The shares were sold as follows: 4,084 by MPM BioVentures 2014, L.P. (\"BV 2014\"), 141 by MPM Asset Management Investors BV2014 LLC (\"AM BV2014\"), 2,579 by MPM BioVentures 2018, L.P. (\"BV 2018\") and 51 by MPM Asset Management Investors BV2018 LLC (\"AM BV2018\"). MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC (\"BV 2014 LLC\") are the direct and indirect general partners of BV 2014 and BV 2014(B). BV 2014 LLC is the manager of AM BV2014. MPM BioVentures 2018 GP LLC and MPM BioVentures 2018 LLC (\"BV 2018 LLC\") are the direct and indirect general partners of BV 2018 and BV 2018(B). BV 2018 LLC is the manager of AM BV2018. Messrs. Evnin and Foley are managing directors of BV 2014 LLC and BV 2018 LLC."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $26.95 to $27.07 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"The shares are held as follows: 1,858,629 by BV 2014, 107,713 by MPM BioVentures 2014(B), L.P. (\"BV 2014(B)\"), 63,972 by AM BV2014, 1,173,870 by BV 2018, 54,213 by MPM BioVentures 2018(B), L.P. (\"BV 2018(B)\") and 23,167 by AM BV2018. The Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its respective pecuniary interest therein."}],"balance_after":3281564,"source":{"system":"sec-edgar","filing":"0001209191-21-059426","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1134657/000120919121059426/doc4.xml","form_type":"4"}},{"id":2556003,"issuer":{"id":75965,"kind":"organization","name":"iTeos Therapeutics, Inc.","symbol":"ITOS"},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2480,"kind":"person","name":"EVNIN LUKE","position":2,"cik":"0001134657","reported_name":"EVNIN LUKE","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2482,"kind":"person","name":"Foley Todd","position":3,"cik":"0001473930","reported_name":"Foley Todd","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":4,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":6,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":7,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2487,"kind":"organization","name":"MPM BIOVENTURES 2018 (B), L.P.","position":8,"cik":"0001729504","reported_name":"MPM BIOVENTURES 2018 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2488,"kind":"organization","name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","position":9,"cik":"0001734817","reported_name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2021-09-30T21:06:05.000Z","date":"2021-09-30","kind":"sale","acquired":false,"shares":2292,"price":27,"value":61884.0,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction effected pursuant to a plan established pursuant to Rule 10b5-1."},{"field":"shares","element":"transactionShares","label":"F5","text":"The shares were sold as follows: 1,366 by BV 2014, 47 by AM BV2014, 862 by BV 2018 and 17 by AM BV2018."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $26.955 to $27.05 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F7","text":"The shares are held as follows: 1,862,713 by BV 2014, 107,713 by BV 2014(B), 64,113 by AM BV2014, 1,176,449 by BV 2018, 54,213 by BV 2018(B) and 23,218 by AM BV2018. Each of the Reporting Persons disclaims beneficial ownership of the securities herein except to the extent of his or its respective pecuniary interest therein, if any."}],"balance_after":3288419,"source":{"system":"sec-edgar","filing":"0001209191-21-058209","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1134657/000120919121058209/doc4.xml","form_type":"4"}},{"id":2556002,"issuer":{"id":75965,"kind":"organization","name":"iTeos Therapeutics, Inc.","symbol":"ITOS"},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2480,"kind":"person","name":"EVNIN LUKE","position":2,"cik":"0001134657","reported_name":"EVNIN LUKE","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2482,"kind":"person","name":"Foley Todd","position":3,"cik":"0001473930","reported_name":"Foley Todd","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":4,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":6,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":7,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2487,"kind":"organization","name":"MPM BIOVENTURES 2018 (B), L.P.","position":8,"cik":"0001729504","reported_name":"MPM BIOVENTURES 2018 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2488,"kind":"organization","name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","position":9,"cik":"0001734817","reported_name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2021-09-30T21:06:05.000Z","date":"2021-09-28","kind":"sale","acquired":false,"shares":19214,"price":27,"value":518778.0,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction effected pursuant to a plan established pursuant to Rule 10b5-1."},{"field":"shares","element":"transactionShares","label":"F2","text":"The shares were sold as follows: 11,447 by MPM BioVentures 2014, L.P. (\"BV 2014\"), 394 by MPM Asset Management Investors BV2014 LLC (\"AM BV2014\"), 7,230 by MPM BioVentures 2018, L.P. (\"BV 2018\") and 143 by MPM Asset Management Investors BV2018 LLC (\"AM BV2018\"). MPM BioVentures 2014 GP LLC and MPM BioVentures 2014 LLC (\"BV 2014 LLC\") are the direct and indirect general partners of BV 2014 and BV 2014(B). BV 2014 LLC is the manager of AM BV2014. MPM BioVentures 2018 GP LLC and MPM BioVentures 2018 LLC (\"BV 2018 LLC\") are the direct and indirect general partners of BV 2018 and BV 2018(B). BV 2018 LLC is the manager of AM BV2018. Messrs. Evnin and Foley are managing directors of BV 2014 LLC and BV 2018 LLC."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $26.95 to $27.10 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"The shares are held as follows: 1,864,079 by BV 2014, 107,713 by MPM BioVentures 2014(B), L.P. (\"BV 2014(B)\"), 64,160 by AM BV2014, 1,177,311 by BV 2018, 54,213 by MPM BioVentures 2018(B), L.P. (\"BV 2018(B)\") and 23,235 by AM BV2018. The Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its respective pecuniary interest therein."}],"balance_after":3290711,"source":{"system":"sec-edgar","filing":"0001209191-21-058209","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1134657/000120919121058209/doc4.xml","form_type":"4"}},{"id":2559087,"issuer":{"id":75965,"kind":"organization","name":"iTeos Therapeutics, Inc.","symbol":"ITOS"},"owners":[{"id":2479,"kind":"organization","name":"MPM BioVentures 2014, L.P.","position":1,"cik":"0001609492","reported_name":"MPM BioVentures 2014, L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2480,"kind":"person","name":"EVNIN LUKE","position":2,"cik":"0001134657","reported_name":"EVNIN LUKE","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2482,"kind":"person","name":"Foley Todd","position":3,"cik":"0001473930","reported_name":"Foley Todd","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2483,"kind":"organization","name":"MPM BioVentures 2014 (B), L.P.","position":4,"cik":"0001609493","reported_name":"MPM BioVentures 2014 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2484,"kind":"organization","name":"MPM Asset Management Investors BV2014 LLC","position":5,"cik":"0001609495","reported_name":"MPM Asset Management Investors BV2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2485,"kind":"organization","name":"MPM BioVentures 2014 LLC","position":6,"cik":"0001765021","reported_name":"MPM BioVentures 2014 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2486,"kind":"organization","name":"MPM BioVentures 2014 GP LLC","position":7,"cik":"0001765091","reported_name":"MPM BioVentures 2014 GP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2487,"kind":"organization","name":"MPM BIOVENTURES 2018 (B), L.P.","position":8,"cik":"0001729504","reported_name":"MPM BIOVENTURES 2018 (B), L.P.","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2488,"kind":"organization","name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","position":9,"cik":"0001734817","reported_name":"MPM ASSET MANAGEMENT INVESTORS BV2018 LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2021-09-27T21:51:41.000Z","date":"2021-09-27","kind":"sale","acquired":false,"shares":11625,"price":27.09,"value":314921.25,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Transaction effected pursuant to a plan established pursuant to Rule 10b5-1."},{"field":"shares","element":"transactionShares","label":"F11","text":"The shares were sold as follows: 6,926 by BV 2014, 238 by AM BV2014, 4,375 by  BV 2018 and 86 by AM BV2018."},{"field":"price","element":"transactionPricePerShare","label":"F12","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $26.95 to $27.40 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F13","text":"The shares are held as follows: 1,875,526 by BV 2014, 107,713 by BV 2014(B), 64,554 by AM BV2014, 1,184,541 by BV 2018, 54,213 by BV 2018(B) and 23,378 by AM BV2018. The Reporting Person disclaims beneficial ownership of the securities except to the extent of his or its respective pecuniary interest therein."}],"balance_after":3309925,"source":{"system":"sec-edgar","filing":"0001209191-21-057823","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1134657/000120919121057823/doc4.xml","form_type":"4"}}],"next_cursor":"2021-09-27T21:51:41.000000Z,2559087"}