{"transactions":[{"id":2627234,"issuer":{"id":7255,"kind":"organization","name":"TScan Therapeutics, Inc."},"owners":[{"id":137122,"kind":"person","name":"Westphal Christoph H","position":1,"cik":"0001291961","reported_name":"Westphal Christoph H","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Series C Preferred Stock","published_at":"2021-07-22T20:46:41.000Z","date":"2021-07-20","kind":"exercise","acquired":false,"shares":171063,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each share of the Issuer's preferred stock automatically converted on a one for one basis into Voting Common Stock immediately prior to the closing of the Issuer's initial public offering, without payment or further consideration. The preferred stock had no expiration date."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Each share of the Issuer's preferred stock automatically converted on a one for one basis into Voting Common Stock immediately prior to the closing of the Issuer's initial public offering, without payment or further consideration. The preferred stock had no expiration date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Each share of the Issuer's preferred stock automatically converted on a one for one basis into Voting Common Stock immediately prior to the closing of the Issuer's initial public offering, without payment or further consideration. The preferred stock had no expiration date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Each share of the Issuer's preferred stock automatically converted on a one for one basis into Voting Common Stock immediately prior to the closing of the Issuer's initial public offering, without payment or further consideration. The preferred stock had no expiration date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"These shares are held by Longwood Fund IV, L.P. (\"Longwood\"). The general partner of Longwood is Longwood Fund IV GP, LLC (\"Longwood GP\"). Voting, investment and dispositive decisions at Longwood GP with respect to the securities held by Longwood are made by an investment committee comprised of Christoph Westphal, Richard Aldrich and John Lawrence (collectively, the \"IC Members\"). Longwood GP and each of the IC Members may be deemed to share voting, investment and dispositive power over the securities held by Longwood and as a result may be deemed to have beneficial ownership over such securities. Longwood GP and each of the IC Members disclaims beneficial ownership over the securities held by Longwood, except to the extent of their respective pecuniary interests therein."}],"balance_after":0,"derivative":{"underlying":"Voting Common Stock","underlying_shares":171063},"source":{"system":"sec-edgar","filing":"0000899243-21-029479","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1783328/000089924321029479/doc4.xml","form_type":"4"}},{"id":2627233,"issuer":{"id":7255,"kind":"organization","name":"TScan Therapeutics, Inc."},"owners":[{"id":137122,"kind":"person","name":"Westphal Christoph H","position":1,"cik":"0001291961","reported_name":"Westphal Christoph H","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Series B Preferred Stock","published_at":"2021-07-22T20:46:41.000Z","date":"2021-07-20","kind":"exercise","acquired":false,"shares":332594,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each share of the Issuer's preferred stock automatically converted on a one for one basis into Voting Common Stock immediately prior to the closing of the Issuer's initial public offering, without payment or further consideration. The preferred stock had no expiration date."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Each share of the Issuer's preferred stock automatically converted on a one for one basis into Voting Common Stock immediately prior to the closing of the Issuer's initial public offering, without payment or further consideration. The preferred stock had no expiration date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Each share of the Issuer's preferred stock automatically converted on a one for one basis into Voting Common Stock immediately prior to the closing of the Issuer's initial public offering, without payment or further consideration. The preferred stock had no expiration date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Each share of the Issuer's preferred stock automatically converted on a one for one basis into Voting Common Stock immediately prior to the closing of the Issuer's initial public offering, without payment or further consideration. The preferred stock had no expiration date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"These shares are held by Longwood Fund IV, L.P. (\"Longwood\"). The general partner of Longwood is Longwood Fund IV GP, LLC (\"Longwood GP\"). Voting, investment and dispositive decisions at Longwood GP with respect to the securities held by Longwood are made by an investment committee comprised of Christoph Westphal, Richard Aldrich and John Lawrence (collectively, the \"IC Members\"). Longwood GP and each of the IC Members may be deemed to share voting, investment and dispositive power over the securities held by Longwood and as a result may be deemed to have beneficial ownership over such securities. Longwood GP and each of the IC Members disclaims beneficial ownership over the securities held by Longwood, except to the extent of their respective pecuniary interests therein."}],"balance_after":0,"derivative":{"underlying":"Voting Common Stock","underlying_shares":332594},"source":{"system":"sec-edgar","filing":"0000899243-21-029479","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1783328/000089924321029479/doc4.xml","form_type":"4"}},{"id":2627232,"issuer":{"id":7255,"kind":"organization","name":"TScan Therapeutics, Inc."},"owners":[{"id":137122,"kind":"person","name":"Westphal Christoph H","position":1,"cik":"0001291961","reported_name":"Westphal Christoph H","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Series A Preferred Stock","published_at":"2021-07-22T20:46:41.000Z","date":"2021-07-20","kind":"exercise","acquired":false,"shares":641848,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each share of the Issuer's preferred stock automatically converted on a one for one basis into Voting Common Stock immediately prior to the closing of the Issuer's initial public offering, without payment or further consideration. The preferred stock had no expiration date."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Each share of the Issuer's preferred stock automatically converted on a one for one basis into Voting Common Stock immediately prior to the closing of the Issuer's initial public offering, without payment or further consideration. The preferred stock had no expiration date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"Each share of the Issuer's preferred stock automatically converted on a one for one basis into Voting Common Stock immediately prior to the closing of the Issuer's initial public offering, without payment or further consideration. The preferred stock had no expiration date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Each share of the Issuer's preferred stock automatically converted on a one for one basis into Voting Common Stock immediately prior to the closing of the Issuer's initial public offering, without payment or further consideration. The preferred stock had no expiration date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"These shares are held by Longwood Fund IV, L.P. (\"Longwood\"). The general partner of Longwood is Longwood Fund IV GP, LLC (\"Longwood GP\"). Voting, investment and dispositive decisions at Longwood GP with respect to the securities held by Longwood are made by an investment committee comprised of Christoph Westphal, Richard Aldrich and John Lawrence (collectively, the \"IC Members\"). Longwood GP and each of the IC Members may be deemed to share voting, investment and dispositive power over the securities held by Longwood and as a result may be deemed to have beneficial ownership over such securities. Longwood GP and each of the IC Members disclaims beneficial ownership over the securities held by Longwood, except to the extent of their respective pecuniary interests therein."}],"balance_after":0,"derivative":{"underlying":"Voting Common Stock","underlying_shares":641848},"source":{"system":"sec-edgar","filing":"0000899243-21-029479","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1783328/000089924321029479/doc4.xml","form_type":"4"}},{"id":2627231,"issuer":{"id":7255,"kind":"organization","name":"TScan Therapeutics, Inc."},"owners":[{"id":137122,"kind":"person","name":"Westphal Christoph H","position":1,"cik":"0001291961","reported_name":"Westphal Christoph H","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Voting Common Stock","published_at":"2021-07-22T20:46:41.000Z","date":"2021-07-20","kind":"purchase","acquired":true,"shares":133333,"price":15,"value":1999995.0,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Represents shares purchased in the Issuer's initial public offering."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"These shares are held by Longwood Fund IV, L.P. (\"Longwood\"). The general partner of Longwood is Longwood Fund IV GP, LLC (\"Longwood GP\"). Voting, investment and dispositive decisions at Longwood GP with respect to the securities held by Longwood are made by an investment committee comprised of Christoph Westphal, Richard Aldrich and John Lawrence (collectively, the \"IC Members\"). Longwood GP and each of the IC Members may be deemed to share voting, investment and dispositive power over the securities held by Longwood and as a result may be deemed to have beneficial ownership over such securities. Longwood GP and each of the IC Members disclaims beneficial ownership over the securities held by Longwood, except to the extent of their respective pecuniary interests therein."}],"balance_after":1278838,"source":{"system":"sec-edgar","filing":"0000899243-21-029479","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1783328/000089924321029479/doc4.xml","form_type":"4"}},{"id":2627230,"issuer":{"id":7255,"kind":"organization","name":"TScan Therapeutics, Inc."},"owners":[{"id":137122,"kind":"person","name":"Westphal Christoph H","position":1,"cik":"0001291961","reported_name":"Westphal Christoph H","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Voting Common Stock","published_at":"2021-07-22T20:46:41.000Z","date":"2021-07-20","kind":"exercise","acquired":true,"shares":1145505,"ownership":{"direct":false,"nature":"See footnote"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Each share of the Issuer's preferred stock automatically converted on a one for one basis into Voting Common Stock immediately prior to the closing of the Issuer's initial public offering, without payment or further consideration. The preferred stock had no expiration date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"These shares are held by Longwood Fund IV, L.P. (\"Longwood\"). The general partner of Longwood is Longwood Fund IV GP, LLC (\"Longwood GP\"). Voting, investment and dispositive decisions at Longwood GP with respect to the securities held by Longwood are made by an investment committee comprised of Christoph Westphal, Richard Aldrich and John Lawrence (collectively, the \"IC Members\"). Longwood GP and each of the IC Members may be deemed to share voting, investment and dispositive power over the securities held by Longwood and as a result may be deemed to have beneficial ownership over such securities. Longwood GP and each of the IC Members disclaims beneficial ownership over the securities held by Longwood, except to the extent of their respective pecuniary interests therein."}],"balance_after":1145505,"source":{"system":"sec-edgar","filing":"0000899243-21-029479","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1783328/000089924321029479/doc4.xml","form_type":"4"}},{"id":3721206,"issuer":{"id":937,"kind":"organization","name":"Decoy Therapeutics Inc.","symbol":"DCOY"},"owners":[{"id":137122,"kind":"person","name":"Westphal Christoph H","position":1,"cik":"0001291961","reported_name":"Westphal Christoph H","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2018-12-21T17:03:19.000Z","date":"2018-12-20","kind":"gift","acquired":false,"shares":2200000,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":844627,"source":{"system":"sec-edgar","filing":"0001104659-18-074495","document":"a5.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1291961/000110465918074495/a5.xml","form_type":"5"}},{"id":3721205,"issuer":{"id":937,"kind":"organization","name":"Decoy Therapeutics Inc.","symbol":"DCOY"},"owners":[{"id":137122,"kind":"person","name":"Westphal Christoph H","position":1,"cik":"0001291961","reported_name":"Westphal Christoph H","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2018-12-21T17:03:19.000Z","date":"2018-11-06","kind":"gift","acquired":false,"shares":858300,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":3044627,"source":{"system":"sec-edgar","filing":"0001104659-18-074495","document":"a5.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1291961/000110465918074495/a5.xml","form_type":"5"}},{"id":3787403,"issuer":{"id":937,"kind":"organization","name":"Decoy Therapeutics Inc.","symbol":"DCOY"},"owners":[{"id":137122,"kind":"person","name":"Westphal Christoph H","position":1,"cik":"0001291961","reported_name":"Westphal Christoph H","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2018-10-18T17:02:43.000Z","date":"2018-10-16","kind":"sale","acquired":false,"shares":3212861,"price":0.9154,"value":2941052.9594,"ownership":{"direct":false,"nature":"See footnotes"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $0.70 to $1.33, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the SEC, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote (1) to this Form 4."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"No shares were sold by Christoph Westphal, M.D., Ph.D. (\"Westphal\") in this transaction. Represents 2,697,264 shares sold by Longwood Fund II, L.P. (\"Longwood Fund II\") and 515,597 shares sold by Longwood Fund III, L.P. (\"Longwood Fund III\"). Longwood Fund II GP, LLC is the General Partner of Longwood Fund II and Longwood Fund III GP, LLC is the General Partner of Longwood Fund III. The managers of Longwood Fund II GP, LLC and Longwood Fund III GP, LLC (the \"Managers\") have delegated their voting and dispositive power with respect to the Issuer's securities held by Longwood Fund II and Longwood Fund III (the \"Longwood Shares\") to a committee comprised of three members, one of which is Westphal (the \"Longwood Committee\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"The Longwood Committee approves investment and voting decisions by a majority vote, and no individual member has sole control or voting power over the Longwood Shares.  Each of Westphal, Longwood Fund II GP, LLC, Longwood Fund III GP, LLC, the Managers and the members of the Longwood Committee disclaim beneficial ownership of the Longwood Shares, except to the extent of their respective pecuniary interest therein, and the inclusion of these shares in this report shall not be deemed an admission of beneficial ownership of the shares for purposes of Section 16 or for any other purpose."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0001104659-18-062807","document":"a4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1291961/000110465918062807/a4.xml","form_type":"4"}},{"id":4249976,"issuer":{"id":937,"kind":"organization","name":"Decoy Therapeutics Inc.","symbol":"DCOY"},"owners":[{"id":137122,"kind":"person","name":"Westphal Christoph H","position":1,"cik":"0001291961","reported_name":"Westphal Christoph H","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Stock Option (right to buy)","published_at":"2017-07-27T08:54:47.000Z","date":"2017-07-26","kind":"grant","acquired":true,"shares":12000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The stock option will vest in 12 successive equal monthly installments measured from July 26, 2017."}],"balance_after":12000,"derivative":{"exercise_price":4.08,"expiration_date":"2027-07-26","underlying":"Common Stock","underlying_shares":12000},"source":{"system":"sec-edgar","filing":"0001615219-17-000056","document":"wf-form4_150116007433619.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1291961/000161521917000056/wf-form4_150116007433619.xml","form_type":"4"}},{"id":4563871,"issuer":{"id":937,"kind":"organization","name":"Decoy Therapeutics Inc.","symbol":"DCOY"},"owners":[{"id":137122,"kind":"person","name":"Westphal Christoph H","position":1,"cik":"0001291961","reported_name":"Westphal Christoph H","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2016-11-08T16:23:57.000Z","date":"2016-11-08","kind":"purchase","acquired":true,"shares":7000,"price":7.31,"value":51170.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price in Column 4 is a weighted average purchase price. The prices actually received ranged from $7.30 to $7.32. The reporting person will provide to the Issuer, any security holder of the Issuer, or the SEC staff, upon request, information regarding the number of shares purchased at each price within the range."}],"balance_after":3941118,"source":{"system":"sec-edgar","filing":"0001615219-16-000232","document":"wf-form4_147864022091781.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1291961/000161521916000232/wf-form4_147864022091781.xml","form_type":"4"}},{"id":4565268,"issuer":{"id":937,"kind":"organization","name":"Decoy Therapeutics Inc.","symbol":"DCOY"},"owners":[{"id":137122,"kind":"person","name":"Westphal Christoph H","position":1,"cik":"0001291961","reported_name":"Westphal Christoph H","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2016-11-07T16:43:25.000Z","date":"2016-11-07","kind":"purchase","acquired":true,"shares":8870,"price":5.7,"value":50559.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price in Column 4 is a weighted average purchase price. The prices actually received ranged from $5.66 to $5.73. The reporting person will provide to the Issuer, any security holder of the issuer, or the SEC staff, upon request, information regarding the number of shares purchased at each price within the range."}],"balance_after":3934118,"source":{"system":"sec-edgar","filing":"0001615219-16-000230","document":"wf-form4_147855499188160.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1291961/000161521916000230/wf-form4_147855499188160.xml","form_type":"4"}}]}