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(the \"Corporation\") sold, pursuant to a durable automatic sale instruction adopted by the reporting person on May 12, 2025, effecting the sell-to-cover election of the reporting person to satisfy tax withholding obligations, in connection with the vesting of restricted stock units on April 1, 2026. The sales do not represent a discretionary trade by the reporting person."},{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares of common stock of Voyager Therapeutics, Inc. (the \"Corporation\") sold, pursuant to a durable automatic sale instruction adopted by the reporting person on May 12, 2025, effecting the sell-to-cover election of the reporting person to satisfy tax withholding obligations, in connection with the vesting of restricted stock units on April 1, 2026. The sales do not represent a discretionary trade by the reporting person."},{"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 $3.81 to $3.95, inclusive. The reporting person undertakes to provide to the Corporation, any security holder of the Corporation, 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 ranges set forth in footnote (2) to this Form 4."}],"balance_after":472549,"source":{"system":"sec-edgar","filing":"0001104659-26-039691","document":"tm2611148-1_4seq1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1640266/000110465926039691/tm2611148-1_4seq1.xml","form_type":"4"}},{"id":879594,"issuer":{"id":6271,"kind":"organization","name":"Voyager Therapeutics, Inc."},"owners":[{"id":53833,"kind":"person","name":"Sandrock Alfred","position":1,"cik":"0001577061","reported_name":"Sandrock Alfred","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2026-02-26T14:47:27.000Z","date":"2026-02-24","kind":"sale","planned":true,"acquired":false,"shares":14197,"price":3.79,"value":53806.63,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents shares of common stock of Voyager Therapeutics, Inc. (the \"Corporation\") sold, pursuant to a durable automatic sale instruction adopted by the reporting person on May 12, 2025, effecting the sell-to-cover election of the reporting person to satisfy tax withholding obligations, in connection with the vesting of restricted stock units on February 21, 2026. The sales do not represent a discretionary trade by the reporting person."},{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares of common stock of Voyager Therapeutics, Inc. (the \"Corporation\") sold, pursuant to a durable automatic sale instruction adopted by the reporting person on May 12, 2025, effecting the sell-to-cover election of the reporting person to satisfy tax withholding obligations, in connection with the vesting of restricted stock units on February 21, 2026. The sales do not represent a discretionary trade by the reporting person."},{"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 $3.61 to $3.86, inclusive. The reporting person undertakes to provide to the Corporation, any security holder of the Corporation, 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 ranges set forth in footnote (2) to this Form 4."}],"balance_after":484060,"source":{"system":"sec-edgar","filing":"0001104659-26-020181","document":"tm267337-3_4seq1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1640266/000110465926020181/tm267337-3_4seq1.xml","form_type":"4"}},{"id":890658,"issuer":{"id":6271,"kind":"organization","name":"Voyager Therapeutics, Inc."},"owners":[{"id":53833,"kind":"person","name":"Sandrock Alfred","position":1,"cik":"0001577061","reported_name":"Sandrock Alfred","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2026-02-20T21:01:23.000Z","date":"2026-02-18","kind":"sale","planned":true,"acquired":false,"shares":11732,"price":3.41,"value":40006.12,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents shares of common stock of Voyager Therapeutics, Inc. (the \"Corporation\") sold, pursuant to a durable automatic sale instruction adopted by the reporting person on May 12, 2025, effecting the sell-to-cover election of the reporting person to satisfy tax withholding obligations, in connection with the vesting of restricted stock units on February 17, 2026. The sales do not represent a discretionary trade by the reporting person."},{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares of common stock of Voyager Therapeutics, Inc. (the \"Corporation\") sold, pursuant to a durable automatic sale instruction adopted by the reporting person on May 12, 2025, effecting the sell-to-cover election of the reporting person to satisfy tax withholding obligations, in connection with the vesting of restricted stock units on February 17, 2026. The sales do not represent a discretionary trade by the reporting person."},{"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 $3.35 to $3.47, inclusive. The reporting person undertakes to provide to the Corporation, any security holder of the Corporation, 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 ranges set forth in footnote (2) to this Form 4."}],"balance_after":498257,"source":{"system":"sec-edgar","filing":"0001104659-26-018126","document":"tm266896-1_4seq1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1640266/000110465926018126/tm266896-1_4seq1.xml","form_type":"4"}},{"id":909904,"issuer":{"id":6271,"kind":"organization","name":"Voyager Therapeutics, Inc."},"owners":[{"id":53833,"kind":"person","name":"Sandrock Alfred","position":1,"cik":"0001577061","reported_name":"Sandrock Alfred","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2026-02-11T21:30:56.000Z","date":"2026-02-10","kind":"sale","planned":false,"acquired":false,"shares":12192,"price":3.78,"value":46085.76,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents shares of common stock sold, pursuant to a durable automatic sales instruction letter effecting the sell-to-cover election of the reporting person to satisfy tax withholding obligations, in connection with the vesting of restricted stock units on February 9, 2026. The sales do not represent a discretionary trade by the reporting person."},{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares of common stock sold, pursuant to a durable automatic sales instruction letter effecting the sell-to-cover election of the reporting person to satisfy tax withholding obligations, in connection with the vesting of restricted stock units on February 9, 2026. The sales do not represent a discretionary trade by the reporting person."},{"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 $3.68 to $3.91, inclusive. The reporting person undertakes to provide to Voyager Therapeutics, Inc., 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 ranges set forth in footnote (2) to this Form 4."}],"balance_after":509989,"source":{"system":"sec-edgar","filing":"0001104659-26-013414","document":"tm266069-2_4seq1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1640266/000110465926013414/tm266069-2_4seq1.xml","form_type":"4"}},{"id":911839,"issuer":{"id":6271,"kind":"organization","name":"Voyager Therapeutics, Inc."},"owners":[{"id":53833,"kind":"person","name":"Sandrock Alfred","position":1,"cik":"0001577061","reported_name":"Sandrock Alfred","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Stock Option (Right to Buy)","published_at":"2026-02-10T21:30:53.000Z","date":"2026-02-06","kind":"grant","planned":false,"acquired":true,"shares":402500,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"This stock option was issued pursuant to the Plan. The vesting commencement date of the option is the grant date, February 6, 2026. The option vests over four years, with 1/48th of the shares of common stock underlying the option vesting upon the one-month anniversary of such vesting commencement date and an additional 1/48th of the shares of common stock underlying the option vesting at the end of each successive one-month period thereafter, subject to the Reporting Person's continued service."}],"balance_after":402500,"derivative":{"exercise_price":3.68,"expiration_date":"2036-02-06","underlying":"Common Stock","underlying_shares":402500},"source":{"system":"sec-edgar","filing":"0001104659-26-012672","document":"tm265871-2_4seq1.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1640266/000110465926012672/tm265871-2_4seq1.xml","form_type":"4"}},{"id":911838,"issuer":{"id":6271,"kind":"organization","name":"Voyager Therapeutics, Inc."},"owners":[{"id":53833,"kind":"person","name":"Sandrock Alfred","position":1,"cik":"0001577061","reported_name":"Sandrock Alfred","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2026-02-10T21:30:53.000Z","date":"2026-02-06","kind":"grant","planned":false,"acquired":true,"shares":86250,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Consists of shares of common stock issuable under an aggregate of 86,250 restricted stock units (\"RSUs\") awarded to the Reporting Person pursuant to the Voyager Therapeutics, Inc. 2025 Stock Incentive Plan (the \"Plan\"). Each RSU represents the right to receive one share of common stock upon vesting. The vesting commencement date of the RSU award is the grant date, February 6, 2026. The RSU award vests over three years, with 1/3rd of the shares of common stock underlying the RSU award vesting on the one-year anniversary of such vesting commencement date and an additional 1/3rd of the shares of common stock underlying the RSU award vesting at the end of each successive one-year period thereafter, subject to the Reporting Person's continued service."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 5,000 shares of common stock acquired under the Voyager Therapeutics, Inc. 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The sales do not represent a discretionary trade by the reporting person."},{"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 $3.34 to $3.52, inclusive. 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The sales do not represent a discretionary trade by the reporting person."},{"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 $4.21 to $4.32, inclusive. The reporting person undertakes to provide to Voyager Therapeutics, Inc., 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 ranges set forth in footnote (2) to this Form 4."}],"balance_after":296816,"source":{"system":"sec-edgar","filing":"0001104659-25-016520","document":"tm257355-5_4seq1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1640266/000110465925016520/tm257355-5_4seq1.xml","form_type":"4"}},{"id":1271635,"issuer":{"id":6271,"kind":"organization","name":"Voyager Therapeutics, Inc."},"owners":[{"id":53833,"kind":"person","name":"Sandrock Alfred","position":1,"cik":"0001577061","reported_name":"Sandrock Alfred","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President & CEO"}}],"security":"Common Stock","published_at":"2025-02-12T21:20:21.000Z","date":"2025-02-11","kind":"sale","planned":false,"acquired":false,"shares":16644,"price":4.45,"value":74065.8,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares of common stock sold, pursuant to a durable automatic sales instruction letter effecting the sell-to-cover election of the reporting person to satisfy tax withholding obligations, in connection with the vesting of restricted stock units on February 9, 2025. The sales do not represent a discretionary trade by the reporting person."},{"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 $4.13 to $5.00, inclusive. 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The sales do not represent a discretionary trade by the reporting person."},{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares of common stock sold, pursuant to a durable automatic sales instruction letter effecting the sell-to-cover election of the reporting person to satisfy tax withholding obligations, in connection with the vesting of restricted stock units on April 1, 2024. The sales do not represent a discretionary trade by the reporting person."},{"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 $9.71 to $10.02, inclusive. The reporting person undertakes to provide to Voyager Therapeutics, Inc., 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 ranges set forth in footnote (2) to this Form 4."}],"balance_after":322839,"source":{"system":"sec-edgar","filing":"0001104659-24-043104","document":"tm2410775-1_4seq1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1640266/000110465924043104/tm2410775-1_4seq1.xml","form_type":"4"}},{"id":1625346,"issuer":{"id":6271,"kind":"organization","name":"Voyager Therapeutics, Inc."},"owners":[{"id":53833,"kind":"person","name":"Sandrock Alfred","position":1,"cik":"0001577061","reported_name":"Sandrock Alfred","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2024-02-22T21:34:47.000Z","date":"2024-02-21","kind":"sale","planned":false,"acquired":false,"shares":13033,"price":7.46,"value":97226.18,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents shares of common stock sold, pursuant to a durable automatic sales instruction letter effecting the sell-to-cover election of the reporting person to satisfy tax withholding obligations, in connection with the vesting of restricted stock units on February 17, 2024. The sales do not represent a discretionary trade by the reporting person."},{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares of common stock sold, pursuant to a durable automatic sales instruction letter effecting the sell-to-cover election of the reporting person to satisfy tax withholding obligations, in connection with the vesting of restricted stock units on February 17, 2024. The sales do not represent a discretionary trade by the reporting person."},{"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 $7.35 to $7.55, inclusive. The reporting person undertakes to provide to Voyager Therapeutics, Inc., 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 ranges set forth in footnote (2) to this Form 4."}],"balance_after":334954,"source":{"system":"sec-edgar","filing":"0001104659-24-026561","document":"tm246990-3_4seq1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1640266/000110465924026561/tm246990-3_4seq1.xml","form_type":"4"}},{"id":1638200,"issuer":{"id":6271,"kind":"organization","name":"Voyager Therapeutics, Inc."},"owners":[{"id":53833,"kind":"person","name":"Sandrock Alfred","position":1,"cik":"0001577061","reported_name":"Sandrock Alfred","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Stock Option (Right to Buy)","published_at":"2024-02-16T21:59:48.000Z","date":"2024-02-09","kind":"grant","planned":false,"acquired":true,"shares":260000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"This stock option was issued pursuant to the Plan. 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Each RSU represents the right to receive one share of common stock upon vesting. The vesting commencement date of the RSU award is April 1, 2022. 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The actual number of shares that will vest on each vesting date will be determined by comparing the price of Biogen common stock on such vesting date to the price on the grant date (i.e., number of vested shares = number of shares at target payout times [the 30-day average closing stock price ending on the vesting date divided by the 30-day average closing stock price on the grant date])."}],"balance_after":5041,"derivative":{"exercise_price":0,"expiration_date":"2020-02-15","underlying":"Common Stock","underlying_shares":1339},"source":{"system":"sec-edgar","filing":"0001127602-18-007209","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/875045/000112760218007209/form4.xml","form_type":"4"}},{"id":4049469,"issuer":{"id":1675,"kind":"organization","name":"BIOGEN INC.","symbol":"BIIB"},"owners":[{"id":53833,"kind":"person","name":"Sandrock Alfred","position":1,"cik":"0001577061","reported_name":"Sandrock Alfred","relationship":{"officer":true,"officer_title":"EVP, Chief Medical Officer"}}],"security":"Common Stock","published_at":"2018-02-20T21:25:08.000Z","date":"2018-02-15","kind":"tax_withholding","acquired":false,"shares":596,"price":299.38,"value":178430.48,"ownership":{"direct":true},"balance_after":8590.3821,"source":{"system":"sec-edgar","filing":"0001127602-18-007209","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/875045/000112760218007209/form4.xml","form_type":"4"}},{"id":4049468,"issuer":{"id":1675,"kind":"organization","name":"BIOGEN INC.","symbol":"BIIB"},"owners":[{"id":53833,"kind":"person","name":"Sandrock Alfred","position":1,"cik":"0001577061","reported_name":"Sandrock Alfred","relationship":{"officer":true,"officer_title":"EVP, Chief Medical Officer"}}],"security":"Common Stock","published_at":"2018-02-20T21:25:08.000Z","date":"2018-02-15","kind":"exercise","acquired":true,"shares":1339,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":9186.3821,"source":{"system":"sec-edgar","filing":"0001127602-18-007209","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/875045/000112760218007209/form4.xml","form_type":"4"}},{"id":4060772,"issuer":{"id":1675,"kind":"organization","name":"BIOGEN INC.","symbol":"BIIB"},"owners":[{"id":53833,"kind":"person","name":"Sandrock Alfred","position":1,"cik":"0001577061","reported_name":"Sandrock Alfred","relationship":{"officer":true,"officer_title":"EVP, Chief Medical Officer"}}],"security":"Restricted Stock Unit","published_at":"2018-02-14T23:37:07.000Z","date":"2018-02-12","kind":"other","acquired":false,"shares":1398,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"The number of RSUs reported represents the maximum possible number of shares that are eligible for vesting, which is 200% of the number of shares at target payout.  One-fourth of these RSUs are eligible to vest each year for four years, beginning two years from the date of grant.  The actual number of shares that will vest on each vesting date will be determined by comparing the price of Biogen Idec common stock on such vesting date to the price on the grant date (i.e., number of vested shares = number of shares at target payout times [the 30-day average closing stock price ending on the vesting date divided by the 30-day average closing stock price on the grant date])."}],"balance_after":3418,"derivative":{"exercise_price":0,"expiration_date":"2019-02-12","underlying":"Common Stock","underlying_shares":1398},"source":{"system":"sec-edgar","filing":"0001127602-18-006179","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/875045/000112760218006179/form4.xml","form_type":"4"}},{"id":4060771,"issuer":{"id":1675,"kind":"organization","name":"BIOGEN INC.","symbol":"BIIB"},"owners":[{"id":53833,"kind":"person","name":"Sandrock Alfred","position":1,"cik":"0001577061","reported_name":"Sandrock Alfred","relationship":{"officer":true,"officer_title":"EVP, Chief Medical Officer"}}],"security":"Restricted Stock Unit","published_at":"2018-02-14T23:37:07.000Z","date":"2018-02-12","kind":"exercise","acquired":false,"shares":2012,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"The number of RSUs reported represents the maximum possible number of shares that are eligible for vesting, which is 200% of the number of shares at target payout.  One-fourth of these RSUs are eligible to vest each year for four years, beginning two years from the date of grant.  The actual number of shares that will vest on each vesting date will be determined by comparing the price of Biogen Idec common stock on such vesting date to the price on the grant date (i.e., number of vested shares = number of shares at target payout times [the 30-day average closing stock price ending on the vesting date divided by the 30-day average closing stock price on the grant date])."}],"balance_after":4816,"derivative":{"exercise_price":0,"expiration_date":"2019-02-12","underlying":"Common Stock","underlying_shares":2012},"source":{"system":"sec-edgar","filing":"0001127602-18-006179","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/875045/000112760218006179/form4.xml","form_type":"4"}},{"id":4060770,"issuer":{"id":1675,"kind":"organization","name":"BIOGEN INC.","symbol":"BIIB"},"owners":[{"id":53833,"kind":"person","name":"Sandrock Alfred","position":1,"cik":"0001577061","reported_name":"Sandrock Alfred","relationship":{"officer":true,"officer_title":"EVP, Chief Medical Officer"}}],"security":"Restricted Stock Unit","published_at":"2018-02-14T23:37:07.000Z","date":"2018-02-12","kind":"grant","acquired":true,"shares":8290,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The number of RSUs reported represents the maximum possible number of shares that are eligible for vesting, which is 200% of the number of shares at target payout. One-third of these RSUs are eligible to vest on each of the first three anniversaries of the grant date. The actual number of shares that will vest on each vesting date will be determined by comparing the price of Biogen common stock on such vesting date to the price on the grant date (i.e., number of vested shares = number of shares at target payout times [the 30-day average closing stock price ending on the vesting date divided by the 30-day average closing stock price following and including the grant date])."}],"balance_after":8290,"derivative":{"exercise_price":0,"expiration_date":"2021-02-12","underlying":"Common Stock","underlying_shares":8290},"source":{"system":"sec-edgar","filing":"0001127602-18-006179","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/875045/000112760218006179/form4.xml","form_type":"4"}},{"id":4060769,"issuer":{"id":1675,"kind":"organization","name":"BIOGEN INC.","symbol":"BIIB"},"owners":[{"id":53833,"kind":"person","name":"Sandrock Alfred","position":1,"cik":"0001577061","reported_name":"Sandrock Alfred","relationship":{"officer":true,"officer_title":"EVP, Chief Medical Officer"}}],"security":"Restricted Stock Unit","published_at":"2018-02-14T23:37:07.000Z","date":"2018-02-12","kind":"grant","acquired":true,"shares":3315,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The restricted stock units will vest in 2 annual installments.  One-third will vest on the first anniversary of the grant date and two-thirds will vest on the second anniversary of the grant date."}],"balance_after":3315,"derivative":{"exercise_price":0,"expiration_date":"2020-02-12","underlying":"Common Stock","underlying_shares":3315},"source":{"system":"sec-edgar","filing":"0001127602-18-006179","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/875045/000112760218006179/form4.xml","form_type":"4"}},{"id":4060768,"issuer":{"id":1675,"kind":"organization","name":"BIOGEN INC.","symbol":"BIIB"},"owners":[{"id":53833,"kind":"person","name":"Sandrock Alfred","position":1,"cik":"0001577061","reported_name":"Sandrock Alfred","relationship":{"officer":true,"officer_title":"EVP, Chief Medical Officer"}}],"security":"Common Stock","published_at":"2018-02-14T23:37:07.000Z","date":"2018-02-12","kind":"tax_withholding","acquired":false,"shares":718,"price":316.63,"value":227340.34,"ownership":{"direct":true},"balance_after":7847.3821,"source":{"system":"sec-edgar","filing":"0001127602-18-006179","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/875045/000112760218006179/form4.xml","form_type":"4"}},{"id":4060767,"issuer":{"id":1675,"kind":"organization","name":"BIOGEN INC.","symbol":"BIIB"},"owners":[{"id":53833,"kind":"person","name":"Sandrock Alfred","position":1,"cik":"0001577061","reported_name":"Sandrock Alfred","relationship":{"officer":true,"officer_title":"EVP, Chief Medical Officer"}}],"security":"Common Stock","published_at":"2018-02-14T23:37:07.000Z","date":"2018-02-12","kind":"exercise","acquired":true,"shares":2012,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":8565.3821,"source":{"system":"sec-edgar","filing":"0001127602-18-006179","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/875045/000112760218006179/form4.xml","form_type":"4"}},{"id":4060766,"issuer":{"id":1675,"kind":"organization","name":"BIOGEN INC.","symbol":"BIIB"},"owners":[{"id":53833,"kind":"person","name":"Sandrock Alfred","position":1,"cik":"0001577061","reported_name":"Sandrock Alfred","relationship":{"officer":true,"officer_title":"EVP, Chief Medical Officer"}}],"security":"Common Stock","published_at":"2018-02-14T23:37:07.000Z","date":"2018-02-12","kind":"tax_withholding","acquired":false,"shares":598,"price":316.63,"value":189344.74,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Includes 91.527 shares acquired under the Biogen Inc. 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