{"transactions":[{"id":956983,"issuer":{"id":8350,"kind":"organization","name":"MUSTANG BIO, INC."},"owners":[{"id":70729,"kind":"person","name":"Chill Adam J.","position":1,"cik":"0001626451","reported_name":"Chill Adam J.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"COMMON STOCK, PAR VALUE $0.0001","published_at":"2025-12-30T16:16:14.000Z","date":"2025-12-30","kind":"sale","planned":false,"acquired":false,"shares":4,"price":0.9548,"value":3.8192,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Effective January 15, 2025, the Issuer effected a one-for-fifty reverse stock split of its common stock (the \"Reverse Stock Split\"). The amount of common stock reflected on this Form 4 has been adjusted to reflect the Reverse Stock Split."}],"balance_after":375,"source":{"system":"sec-edgar","filing":"0001104659-25-125232","document":"tm2534509-2_4seq1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1626451/000110465925125232/tm2534509-2_4seq1.xml","form_type":"4"}},{"id":1832656,"issuer":{"id":8350,"kind":"organization","name":"MUSTANG BIO, INC."},"owners":[{"id":70729,"kind":"person","name":"Chill Adam J.","position":1,"cik":"0001626451","reported_name":"Chill Adam J.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"COMMON STOCK, PAR VALUE $0.0001","published_at":"2023-07-07T16:07:12.000Z","date":"2023-07-05","kind":"grant","planned":false,"acquired":true,"shares":7246,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The Reporting Person was granted 7,246 restricted shares pursuant to the Issuer's 2016 Incentive Plan on July 5, 2023. The shares will vest on July 5, 2026, subject to the Reporting Person's continued service on the Issuer's board on such date."},{"field":"shares","element":"transactionShares","label":"F2","text":"Effective April 3, 2023, the Issuer effected a fifteen-for-one reverse stock split of its common stock (the \"Reverse Stock Split\"). The amount of common stock reflected on this Form 4 has been adjusted to reflect the Reverse Stock Split."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Effective April 3, 2023, the Issuer effected a fifteen-for-one reverse stock split of its common stock (the \"Reverse Stock Split\"). The amount of common stock reflected on this Form 4 has been adjusted to reflect the Reverse Stock Split."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Includes restricted share units, which vest over various time periods."}],"balance_after":19170,"source":{"system":"sec-edgar","filing":"0001104659-23-079117","document":"tm2320790-5_4seq1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1626451/000110465923079117/tm2320790-5_4seq1.xml","form_type":"4"}},{"id":1931850,"issuer":{"id":8350,"kind":"organization","name":"MUSTANG BIO, INC."},"owners":[{"id":70729,"kind":"person","name":"Chill Adam J.","position":1,"cik":"0001626451","reported_name":"Chill Adam J.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"COMMON STOCK, PAR VALUE $0.0001","published_at":"2023-04-03T16:48:42.000Z","date":"2022-07-29","kind":"grant","planned":false,"acquired":true,"shares":71664,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The Reporting Person was granted 71,664 restricted shares pursuant to the Issuer's 2016 Incentive Plan on July 29, 2022. The shares will vest on June 17, 2025, subject to the Reporting Person's continued service on the Issuer's board on such date."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes restricted share units, which vest over various time periods."}],"balance_after":178861,"source":{"system":"sec-edgar","filing":"0001104659-23-040924","document":"tm2311237-2_4seq1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1626451/000110465923040924/tm2311237-2_4seq1.xml","form_type":"4"}},{"id":2637767,"issuer":{"id":8350,"kind":"organization","name":"MUSTANG BIO, INC."},"owners":[{"id":70729,"kind":"person","name":"Chill Adam J.","position":1,"cik":"0001626451","reported_name":"Chill Adam J.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"COMMON STOCK","published_at":"2021-07-08T16:31:08.000Z","date":"2021-06-28","kind":"grant","acquired":true,"shares":13774,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The Reporting Person was granted 13,774 restricted shares pursuant to the Issuer's 2016 Incentive Plan on June 28, 2021. The shares will vest on June 17, 2024, subject to the Reporting Person's continued service on the Issuer's board on such date."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes restricted share units, which vest over various time periods."}],"balance_after":107197,"source":{"system":"sec-edgar","filing":"0001104659-21-090239","document":"tm2121675-1_4seq1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1626451/000110465921090239/tm2121675-1_4seq1.xml","form_type":"4"}},{"id":3051860,"issuer":{"id":8350,"kind":"organization","name":"MUSTANG BIO, INC."},"owners":[{"id":70729,"kind":"person","name":"Chill Adam J.","position":1,"cik":"0001626451","reported_name":"Chill Adam J.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-08-19T16:32:04.000Z","date":"2020-07-14","kind":"grant","acquired":true,"shares":16611,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"93,423 shares are restricted Common Stock which vest over various time periods."}],"balance_after":93423,"source":{"system":"sec-edgar","filing":"0001104659-20-096923","document":"tm2028955d1_4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1626451/000110465920096923/tm2028955d1_4.xml","form_type":"4"}},{"id":3307260,"issuer":{"id":8350,"kind":"organization","name":"MUSTANG BIO, INC."},"owners":[{"id":70729,"kind":"person","name":"Chill Adam J.","position":1,"cik":"0001626451","reported_name":"Chill Adam J.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-01-17T17:44:01.000Z","date":"2019-08-28","kind":"grant","acquired":true,"shares":13812,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"73,812 shares are restricted Common Stock which vest over various time periods."}],"balance_after":76812,"source":{"system":"sec-edgar","filing":"0001104659-20-005210","document":"tm203350d3_form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1626451/000110465920005210/tm203350d3_form4.xml","form_type":"4"}},{"id":3766234,"issuer":{"id":8350,"kind":"organization","name":"MUSTANG BIO, INC."},"owners":[{"id":70729,"kind":"person","name":"Chill Adam J.","position":1,"cik":"0001626451","reported_name":"Chill Adam J.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"COMMON STOCK","published_at":"2018-11-13T06:37:10.000Z","date":"2018-11-12","kind":"grant","acquired":true,"shares":1000,"price":4.85,"value":4850.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"60,000 shares are restricted Common Stock which vest over various time periods."}],"balance_after":63000,"source":{"system":"sec-edgar","filing":"0001144204-18-058924","document":"tv507044_form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1626451/000114420418058924/tv507044_form4.xml","form_type":"4"}},{"id":3766233,"issuer":{"id":8350,"kind":"organization","name":"MUSTANG BIO, INC."},"owners":[{"id":70729,"kind":"person","name":"Chill Adam J.","position":1,"cik":"0001626451","reported_name":"Chill Adam J.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"COMMON STOCK","published_at":"2018-11-13T06:37:10.000Z","date":"2018-11-08","kind":"grant","acquired":true,"shares":2000,"price":5.34,"value":10680.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"60,000 shares are restricted Common Stock which vest over various time periods."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Reflects the weighted average purchase price of multiple same-way open market purchase transactions effected by the Reporting Person on the same day at different prices through a purchase order executed by a broker-dealer. The reporting person reported on a single line all such transactions that occurred within a one dollar price range. The range of prices for the purchase transactions on November 8, 2018, was $4.90 to $6.06. The reporting person hereby undertakes to provide upon request by the Securities Exchange Commission staff, the issuer, or a shareholder of the issuer, full information regarding the number of shares purchased at each separate price."}],"balance_after":62000,"source":{"system":"sec-edgar","filing":"0001144204-18-058924","document":"tv507044_form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1626451/000114420418058924/tv507044_form4.xml","form_type":"4"}},{"id":3766232,"issuer":{"id":8350,"kind":"organization","name":"MUSTANG BIO, INC."},"owners":[{"id":70729,"kind":"person","name":"Chill Adam J.","position":1,"cik":"0001626451","reported_name":"Chill Adam J.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"COMMON STOCK","published_at":"2018-11-13T06:37:10.000Z","date":"2018-06-14","kind":"grant","acquired":true,"shares":10000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"60,000 shares are restricted Common Stock which vest over various time periods."}],"balance_after":60000,"source":{"system":"sec-edgar","filing":"0001144204-18-058924","document":"tv507044_form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1626451/000114420418058924/tv507044_form4.xml","form_type":"4"}}]}