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The amount of common stock reflected on this Form 4 has been adjusted to reflect the Reverse Split."},{"field":"shares","element":"transactionShares","label":"F2","text":"One-third of the shares will vest on each of January 1, 2025, 2026, and 2027, subject to continued service. The reporting person elected to defer 100% of these restricted shares pursuant to the Issuer's Deferred Compensation Plan for Directors and instead received deferred share units that are subject to the same vesting conditions. Vested deferred shares will be delivered to the Reporting Person in January of the year following the Reporting Person's termination of service, or earlier upon their death or change in control of the Issuer."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Total holdings include 19,998 shares underlying deferred restricted stock units."}],"balance_after":68797,"source":{"system":"sec-edgar","filing":"0001104659-24-000899","document":"tm241755-11_4seq1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1429260/000110465924000899/tm241755-11_4seq1.xml","form_type":"4"}},{"id":1843019,"issuer":{"id":1675,"kind":"organization","name":"BIOGEN INC.","symbol":"BIIB"},"owners":[{"id":39449,"kind":"person","name":"Rowinsky Eric K","position":1,"cik":"0001318886","reported_name":"Rowinsky Eric K","relationship":{"director":true}}],"security":"Common Stock","published_at":"2023-06-28T23:06:11.000Z","date":"2023-06-26","kind":"grant","planned":false,"acquired":true,"shares":960,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":20174,"source":{"system":"sec-edgar","filing":"0001127602-23-019547","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/875045/000112760223019547/form4.xml","form_type":"4"}},{"id":1891160,"issuer":{"id":5242,"kind":"organization","name":"Verastem, Inc.","symbol":"VSTM"},"owners":[{"id":39449,"kind":"person","name":"Rowinsky Eric K","position":1,"cik":"0001318886","reported_name":"Rowinsky Eric K","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (right to buy)","published_at":"2023-05-16T20:35:30.000Z","date":"2023-05-15","kind":"grant","planned":false,"acquired":true,"shares":62500,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The stock option vests in twelve equal installments (rounded down to the nearest whole share on each vesting date except with respect to the final vesting date on which the remaining unvested portion shall vest). The first eleven installments shall vest beginning on the last day of each month over a period from June, 2023 to April, 2024 and the last installment shall vest on the earlier of (i) the day before the 2024 Annual Meeting of Stockholders is held or (ii) May 31, 2024, provided that the Reporting Person continues to serve as a director of the Company on each such vesting date."}],"balance_after":62500,"derivative":{"exercise_price":0.42,"expiration_date":"2033-05-15","underlying":"Common Stock","underlying_shares":62500},"source":{"system":"sec-edgar","filing":"0001104659-23-061427","document":"tm2315836-8_4seq1.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1318886/000110465923061427/tm2315836-8_4seq1.xml","form_type":"4"}},{"id":2016126,"issuer":{"id":6822,"kind":"organization","name":"Fortress Biotech, Inc."},"owners":[{"id":39449,"kind":"person","name":"Rowinsky Eric K","position":1,"cik":"0001318886","reported_name":"Rowinsky Eric K","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"COMMON STOCK, PAR VALUE $0.001","published_at":"2023-02-14T21:11:04.000Z","date":"2023-02-10","kind":"purchase","acquired":true,"shares":11976,"price":0.835,"value":9999.96,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"The total holdings include 200,000 shares of deferred restricted stock."}],"balance_after":931976,"source":{"system":"sec-edgar","filing":"0001104659-23-021625","document":"tm236803-5_4seq1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1429260/000110465923021625/tm236803-5_4seq1.xml","form_type":"4"}},{"id":2067008,"issuer":{"id":6822,"kind":"organization","name":"Fortress Biotech, Inc."},"owners":[{"id":39449,"kind":"person","name":"Rowinsky Eric K","position":1,"cik":"0001318886","reported_name":"Rowinsky Eric K","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"COMMON STOCK, PAR VALUE $0.001","published_at":"2023-01-05T02:26:27.000Z","date":"2023-01-01","kind":"grant","acquired":true,"shares":100000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"One-third of the shares will vest on each of January1, 2024, 2025 and 2026, subject to continued service. The Reporting Person elected to defer 100% of these restricted shares pursuant to the Issuer's Deferred Compensation Plan for Directors and instead received deferred share units that are subject to the same vesting conditions. Vested deferred shares will be delivered to the Reporting Person in January of the year following the reporting person's termination of service, or earlier upon his death or change in control of the Issuer."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"The total holdings include 200,000 shares of deferred restricted stock."}],"balance_after":920000,"source":{"system":"sec-edgar","filing":"0001104659-23-001100","document":"tm231728-6_4seq1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1429260/000110465923001100/tm231728-6_4seq1.xml","form_type":"4"}},{"id":2079528,"issuer":{"id":5242,"kind":"organization","name":"Verastem, Inc.","symbol":"VSTM"},"owners":[{"id":39449,"kind":"person","name":"Rowinsky Eric K","position":1,"cik":"0001318886","reported_name":"Rowinsky Eric K","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (right to buy)","published_at":"2022-12-20T21:06:41.000Z","date":"2022-05-12","kind":"grant","acquired":true,"shares":62500,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"On June 24, 2022 the Reporting Person filed a Form 4 reporting a stock option grant which incorrectly stated an exercise price of $1.11, a transaction date of June 22, 2022 and an expiration date of June 22, 2032. This amendment is being filed to reflect the corrected exercise price of $1.07, transaction date of May 12, 2022 and expiration date of May 12, 2032."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The stock option vests in twelve equal month installments (rounded down to the nearest whole share on each vesting date except with respect to the final vesting date on which the remaining unvested portion shall vest) beginning on the on the last day of each month over a period from June, 2022 to May, 2023, provided that the Reporting Person continues to serve as a director of the Issuer on each such vesting date."}],"balance_after":62500,"derivative":{"exercise_price":1.07,"expiration_date":"2032-05-12","underlying":"Common 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vests in twelve equal month installments (rounded down to the nearest whole share on each vesting date except with respect to the final vesting date on which the remaining unvested portion shall vest) beginning on the on the last day of each month over a period from June, 2022 to May, 2023, provided that the Reporting Person continues to serve as a director of the Company on each such vesting date."}],"balance_after":62500,"derivative":{"exercise_price":1.11,"expiration_date":"2032-06-22","underlying":"Common Stock","underlying_shares":62500},"source":{"system":"sec-edgar","filing":"0001104659-22-074304","document":"tm2219034-9_4seq1.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1318886/000110465922074304/tm2219034-9_4seq1.xml","form_type":"4"}},{"id":2228923,"issuer":{"id":1675,"kind":"organization","name":"BIOGEN INC.","symbol":"BIIB"},"owners":[{"id":39449,"kind":"person","name":"Rowinsky Eric 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total of 30,000 shares were sold by the Reporting Person in order to satisfy the Reporting Person's tax withholding obligations."},{"field":"price","element":"transactionPricePerShare","label":"F7","text":"Reflects the weighted average sale price of multiple same-way open market sale transactions effected by the Reporting Person on the same day at different prices through a sale 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 sale transactions on March 2, 2021, was $4.40 to $4.50.*"}],"balance_after":720000,"source":{"system":"sec-edgar","filing":"0001104659-21-048831","document":"tm219139d7_4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1429260/000110465921048831/tm219139d7_4.xml","form_type":"4"}},{"id":2752045,"issuer":{"id":6822,"kind":"organization","name":"Fortress Biotech, Inc."},"owners":[{"id":39449,"kind":"person","name":"Rowinsky Eric K","position":1,"cik":"0001318886","reported_name":"Rowinsky Eric K","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock, par value $0.001","published_at":"2021-04-09T21:25:28.000Z","date":"2021-02-19","kind":"sale","acquired":false,"shares":8000,"price":4.31,"value":34480.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"In connection with the vesting of 100,000 shares on January 1, 2021, a total of 30,000 shares were sold by the Reporting Person in order to satisfy the Reporting Person's tax withholding obligations."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"Reflects the weighted average sale price of multiple same-way open market sale transactions effected by the Reporting Person on the same day at different prices through a sale 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 sale transactions on February 19, 2021, was $4.30 to $4.31.*"}],"balance_after":730000,"source":{"system":"sec-edgar","filing":"0001104659-21-048831","document":"tm219139d7_4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1429260/000110465921048831/tm219139d7_4.xml","form_type":"4"}},{"id":2752044,"issuer":{"id":6822,"kind":"organization","name":"Fortress Biotech, Inc."},"owners":[{"id":39449,"kind":"person","name":"Rowinsky Eric K","position":1,"cik":"0001318886","reported_name":"Rowinsky Eric K","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock, par value $0.001","published_at":"2021-04-09T21:25:28.000Z","date":"2021-02-18","kind":"sale","acquired":false,"shares":6000,"price":4.2,"value":25200.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"In connection with the vesting of 100,000 shares on January 1, 2021, a total of 30,000 shares were sold by the Reporting Person in order to satisfy the Reporting Person's tax withholding obligations."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"Reflects the weighted average sale price of multiple same-way open market sale transactions effected by the Reporting Person on the same day at different prices through a sale 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 sale transactions on February 18, 2021, was $4.19 to $4.23.*"}],"balance_after":738000,"source":{"system":"sec-edgar","filing":"0001104659-21-048831","document":"tm219139d7_4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1429260/000110465921048831/tm219139d7_4.xml","form_type":"4"}},{"id":2752043,"issuer":{"id":6822,"kind":"organization","name":"Fortress Biotech, Inc."},"owners":[{"id":39449,"kind":"person","name":"Rowinsky Eric K","position":1,"cik":"0001318886","reported_name":"Rowinsky Eric K","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock, par value $0.001","published_at":"2021-04-09T21:25:28.000Z","date":"2021-02-16","kind":"sale","acquired":false,"shares":2000,"price":3.86,"value":7720.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"In connection with the vesting of 100,000 shares on January 1, 2021, a total of 30,000 shares were sold by the Reporting Person in order to satisfy the Reporting Person's tax withholding obligations."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"Reflects an open market sale transaction effected by the Reporting Person through a sale order executed by a broker-dealer.*"}],"balance_after":744000,"source":{"system":"sec-edgar","filing":"0001104659-21-048831","document":"tm219139d7_4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1429260/000110465921048831/tm219139d7_4.xml","form_type":"4"}},{"id":2752042,"issuer":{"id":6822,"kind":"organization","name":"Fortress Biotech, Inc."},"owners":[{"id":39449,"kind":"person","name":"Rowinsky Eric K","position":1,"cik":"0001318886","reported_name":"Rowinsky Eric K","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock, par value $0.001","published_at":"2021-04-09T21:25:28.000Z","date":"2021-02-05","kind":"sale","acquired":false,"shares":4000,"price":3.8,"value":15200.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"In connection with the vesting of 100,000 shares on January 1, 2021, a total of 30,000 shares were sold by the Reporting Person in order to satisfy the Reporting Person's tax withholding obligations."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Reflects the weighted average sale price of multiple same-way open market sale transactions effected by the Reporting Person on the same day at different prices through a sale 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. 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