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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":210000,"derivative":{"exercise_price":3.68,"expiration_date":"2036-02-06","underlying":"Common Stock","underlying_shares":210000},"source":{"system":"sec-edgar","filing":"0001104659-26-012679","document":"tm265871-5_4seq1.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/2015616/000110465926012679/tm265871-5_4seq1.xml","form_type":"4"}},{"id":912390,"issuer":{"id":6271,"kind":"organization","name":"Voyager Therapeutics, Inc."},"owners":[{"id":67070,"kind":"person","name":"Ferguson Toby","position":1,"cik":"0002015616","reported_name":"Ferguson Toby","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Medical Officer"}}],"security":"Common Stock","published_at":"2026-02-10T16:33:26.000Z","date":"2026-02-06","kind":"grant","planned":false,"acquired":true,"shares":45000,"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 45,000 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."}],"balance_after":183914,"source":{"system":"sec-edgar","filing":"0001104659-26-012679","document":"tm265871-5_4seq1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/2015616/000110465926012679/tm265871-5_4seq1.xml","form_type":"4"}},{"id":1060470,"issuer":{"id":6271,"kind":"organization","name":"Voyager Therapeutics, Inc."},"owners":[{"id":67070,"kind":"person","name":"Ferguson Toby","position":1,"cik":"0002015616","reported_name":"Ferguson Toby","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Medical Officer"}}],"security":"Common Stock","published_at":"2025-08-20T14:09:54.000Z","date":"2025-08-18","kind":"sale","planned":false,"acquired":false,"shares":19000,"price":3.73,"value":70870.0,"ownership":{"direct":true},"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 $3.69 to $3.79, 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 (1) to this Form 4."}],"balance_after":138914,"source":{"system":"sec-edgar","filing":"0001104659-25-080825","document":"tm2524007-1_4seq1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/2015616/000110465925080825/tm2524007-1_4seq1.xml","form_type":"4"}},{"id":1177798,"issuer":{"id":6271,"kind":"organization","name":"Voyager Therapeutics, Inc."},"owners":[{"id":67070,"kind":"person","name":"Ferguson Toby","position":1,"cik":"0002015616","reported_name":"Ferguson Toby","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Medical Officer"}}],"security":"Common Stock","published_at":"2025-04-04T16:10:01.000Z","date":"2025-04-02","kind":"sale","planned":false,"acquired":false,"shares":10086,"price":3.43,"value":34594.98,"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 April 1, 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 $3.35 to $3.51, 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":157914,"source":{"system":"sec-edgar","filing":"0001104659-25-032208","document":"tm2511532-2_4seq1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/2015616/000110465925032208/tm2511532-2_4seq1.xml","form_type":"4"}},{"id":1250011,"issuer":{"id":6271,"kind":"organization","name":"Voyager Therapeutics, Inc."},"owners":[{"id":67070,"kind":"person","name":"Ferguson Toby","position":1,"cik":"0002015616","reported_name":"Ferguson Toby","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Medical Officer"}}],"security":"Stock Option (Right to Buy)","published_at":"2025-02-24T16:16:56.000Z","date":"2025-02-21","kind":"grant","planned":false,"acquired":true,"shares":126000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"This stock option was issued pursuant to the Plan. 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