{"transactions":[{"id":804508,"issuer":{"id":3721,"kind":"organization","name":"Scholar Rock Holding Corp","symbol":"SRRK"},"owners":[{"id":50572,"kind":"person","name":"Vaishnaw Akshay","position":1,"cik":"0001458494","reported_name":"Vaishnaw Akshay","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President of R&D"}}],"security":"Common Stock","published_at":"2026-04-20T22:10:16.000Z","date":"2026-04-16","kind":"sale","planned":false,"acquired":false,"shares":12246,"price":49.5745,"value":607089.327,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents the number of shares required to be sold by the reporting person to cover the tax withholding obligation in connection with the vesting of restricted stock units (\"RSUs\") on April 15, 2026. This sale is mandated by the Issuer's election under its equity incentive plans to require the reporting person to fund this tax withholding obligation by completing a \"sell to cover\" transaction with a brokerage firm designated by the Issuer. This sale does not represent a discretionary trade by the reporting person. The shares vested pursuant to awards that were granted on April 27, 2025. Each RSU represents the contingent right to receive upon vesting of the RSU, one share of the Issuer's common stock. The shares subject to these RSU awards vest annually over four years, subject to a continued service relationship with the Issuer on the applicable vesting date."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Consists of 58,521 shares of common stock, 122,021 RSUs subject to time-based vesting conditions and 450,000 RSUs subject to performance- and time-based vesting conditions."}],"balance_after":630542,"source":{"system":"sec-edgar","filing":"0001104659-26-045583","document":"tm2612274-3_4seq1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1727196/000110465926045583/tm2612274-3_4seq1.xml","form_type":"4"}},{"id":909982,"issuer":{"id":3721,"kind":"organization","name":"Scholar Rock Holding Corp","symbol":"SRRK"},"owners":[{"id":50572,"kind":"person","name":"Vaishnaw Akshay","position":1,"cik":"0001458494","reported_name":"Vaishnaw Akshay","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President of R&D"}}],"security":"Common Stock","published_at":"2026-02-11T23:13:09.000Z","date":"2026-02-09","kind":"grant","planned":false,"acquired":true,"shares":47021,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents restricted stock units (\"RSUs\") subject to time-based vesting conditions. Each RSU represents the contingent right to receive, upon vesting of the RSU, one share of the Issuer's common stock. The shares subject to this RSU vest in four annual installments over four years, with the first annual installment to vest on January 15, 2027 and each additional installment to vest annually thereafter; provided the reporting person continues to have a service relationship with the Issuer on each such vesting date."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Consists of 45,767 shares of common stock, 147,021 RSUs subject to time-based vesting conditions and 450,000 RSUs subject to performance- and time-based vesting conditions."}],"balance_after":642788,"source":{"system":"sec-edgar","filing":"0001104659-26-013588","document":"tm266077-8_4seq1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1727196/000110465926013588/tm266077-8_4seq1.xml","form_type":"4"}},{"id":938516,"issuer":{"id":3721,"kind":"organization","name":"Scholar Rock Holding Corp","symbol":"SRRK"},"owners":[{"id":50572,"kind":"person","name":"Vaishnaw Akshay","position":1,"cik":"0001458494","reported_name":"Vaishnaw Akshay","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President of R&D"}}],"security":"Common Stock","published_at":"2026-01-16T00:56:13.000Z","date":"2026-01-13","kind":"sale","planned":false,"acquired":false,"shares":20438,"price":42.7,"value":872702.6,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents the number of shares required to be sold by the Reporting Person to cover the tax withholding obligation in connection with the vesting of restricted stock units subject to performance-and time-based vesting conditions (\"PSUs\"). The sale is mandated by the Issuer's election under its equity incentive plans to require the Reporting Person to fund this tax withholding obligation by completing a \"sell to cover\" transaction with a brokerage firm designated by the Issuer. This sale does not represent a discretionary trade by the Reporting Person. Each PSU represents the contingent right to receive upon vesting of the PSU, one share of the Issuer's common stock."},{"field":"shares","element":"transactionShares","label":"F2","text":"(continued) The shares vested pursuant to awards that were granted on April 27, 2025. 50,000 shares subject to this PSU vested on January 12, 2026, with an additional 50,000 shares scheduled to vest on April 27, 2027 and the remaining shares vesting in tranches of a combination of performance-based vesting tied to the Issuer's common stock achieving certain price targets and time-based vesting over four year, provided the reporting person continues to have a service relationship with the Issuer on each such vesting date. Any PSUs that have not vested on or prior to April 27, 2029 will be forfeited for no consideration."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"45,767 shares of common stock, 100,000 restricted stock units and 450,000 PSUs."}],"balance_after":595767,"source":{"system":"sec-edgar","filing":"0001104659-26-004222","document":"tm263352-2_4seq1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1727196/000110465926004222/tm263352-2_4seq1.xml","form_type":"4"}},{"id":1129297,"issuer":{"id":3721,"kind":"organization","name":"Scholar Rock Holding Corp","symbol":"SRRK"},"owners":[{"id":50572,"kind":"person","name":"Vaishnaw Akshay","position":1,"cik":"0001458494","reported_name":"Vaishnaw Akshay","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President of R&D"}}],"security":"Common Stock","published_at":"2025-05-30T20:30:36.000Z","date":"2025-05-29","kind":"sale","planned":true,"acquired":false,"shares":1620,"price":30.0072,"value":48611.664,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted on February 27, 2025 to cover tax withholding obligations upon the vesting and settlement of RSUs.."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $29.92 to $30.19, inclusive. Full information regarding the number of shares sold at each separate price can be furnished to the SEC staff upon request."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F5","text":"Consists of 16,205 shares of common stock and 100,000 RSUs and 500,000 PSUs. The amount of PSUs reported herein represents the maximum number of shares of the Issuer's common stock that may be issued."}],"balance_after":616205,"source":{"system":"sec-edgar","filing":"0001415889-25-015001","document":"form4-05302025_040504.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1727196/000141588925015001/form4-05302025_040504.xml","form_type":"4"}},{"id":1129296,"issuer":{"id":3721,"kind":"organization","name":"Scholar Rock Holding Corp","symbol":"SRRK"},"owners":[{"id":50572,"kind":"person","name":"Vaishnaw Akshay","position":1,"cik":"0001458494","reported_name":"Vaishnaw Akshay","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President of R&D"}}],"security":"Common Stock","published_at":"2025-05-30T20:30:36.000Z","date":"2025-05-29","kind":"sale","planned":true,"acquired":false,"shares":5130,"price":29.6297,"value":152000.361,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"This sale was effected pursuant to a Rule 10b5-1 trading plan adopted on February 27, 2025 to cover tax withholding obligations upon the vesting and settlement of RSUs.."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $28.92 to $29.81, inclusive. Full information regarding the number of shares sold at each separate price can be furnished to the SEC staff upon request."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Consists of 17,825 shares of common stock and 100,000 RSUs and 500,000 Performance Stock Units (PSUs). The amount of PSUs reported herein represents the maximum number of shares of the Issuer's common stock that may be issued."}],"balance_after":617825,"source":{"system":"sec-edgar","filing":"0001415889-25-015001","document":"form4-05302025_040504.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1727196/000141588925015001/form4-05302025_040504.xml","form_type":"4"}},{"id":1157425,"issuer":{"id":3721,"kind":"organization","name":"Scholar Rock Holding Corp","symbol":"SRRK"},"owners":[{"id":50572,"kind":"person","name":"Vaishnaw Akshay","position":1,"cik":"0001458494","reported_name":"Vaishnaw Akshay","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President of R&D"}}],"security":"Stock Option (Right to Buy)","published_at":"2025-05-06T21:01:46.000Z","date":"2025-05-02","kind":"grant","planned":false,"acquired":true,"shares":110067,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"25% of the shares underlying this option shall vest on April 27, 2026, with the remainder vesting in twelve equal quarterly installments thereafter; provided the reporting person continues to have a service relationship with the Issuer on each such vesting date."}],"balance_after":110067,"derivative":{"exercise_price":32.91,"expiration_date":"2035-05-02","underlying":"Common Stock","underlying_shares":110067},"source":{"system":"sec-edgar","filing":"0001104659-25-045116","document":"tm2513936-3_4seq1.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1727196/000110465925045116/tm2513936-3_4seq1.xml","form_type":"4"}},{"id":1163939,"issuer":{"id":3721,"kind":"organization","name":"Scholar Rock Holding Corp","symbol":"SRRK"},"owners":[{"id":50572,"kind":"person","name":"Vaishnaw Akshay","position":1,"cik":"0001458494","reported_name":"Vaishnaw Akshay","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President of R&D"}}],"security":"Common Stock","published_at":"2025-04-29T22:08:54.000Z","date":"2025-04-27","kind":"grant","planned":false,"acquired":true,"shares":500000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Represents performance based RSUs subject to performance- and time-based vesting conditions (the \"PSUs\"). The amount reported herein represents the maximum number of shares of the Issuer's common stock that may be issued under this award. The shares subject to this PSU vest in tranches of a combination of performance vesting tied to the Issuer's common stock achieving certain price targets and time-based vesting over four years, provided the reporting person continues to have a service relationship with the Issuer on each such vesting date. Any PSUs that have not vested on or prior to April 27, 2029 will be forfeited for no consideration."}],"balance_after":622955,"source":{"system":"sec-edgar","filing":"0001104659-25-041460","document":"tm2513505-6_4seq1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1727196/000110465925041460/tm2513505-6_4seq1.xml","form_type":"4"}},{"id":1163938,"issuer":{"id":3721,"kind":"organization","name":"Scholar Rock Holding Corp","symbol":"SRRK"},"owners":[{"id":50572,"kind":"person","name":"Vaishnaw Akshay","position":1,"cik":"0001458494","reported_name":"Vaishnaw Akshay","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President of R&D"}}],"security":"Common Stock","published_at":"2025-04-29T22:08:54.000Z","date":"2025-04-27","kind":"grant","planned":false,"acquired":true,"shares":100000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents restricted stock units (\"RSUs\") subject to time-based vesting conditions. Each restricted stock unit (\"RSU\") represents the contingent right to receive, upon vesting of the RSU, one share of the Issuer's common stock. The shares subject to this RSU vest in four annual installments over four years, with the first annual installment to vest on April 15, 2026 and each additional installment to vest annually thereafter; provided the reporting person continues to have a service relationship with the Issuer on each such vesting date."}],"balance_after":122955,"source":{"system":"sec-edgar","filing":"0001104659-25-041460","document":"tm2513505-6_4seq1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1727196/000110465925041460/tm2513505-6_4seq1.xml","form_type":"4"}},{"id":1465848,"issuer":{"id":3721,"kind":"organization","name":"Scholar Rock Holding Corp","symbol":"SRRK"},"owners":[{"id":50572,"kind":"person","name":"Vaishnaw Akshay","position":1,"cik":"0001458494","reported_name":"Vaishnaw Akshay","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (Right to Buy)","published_at":"2024-07-01T21:32:33.000Z","date":"2024-06-27","kind":"grant","planned":false,"acquired":true,"shares":18000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Options to vest and become fully exercisable on the earlier of the first anniversary following the date of grant or on the date of the Issuer's next Annual Meeting subject to continued service to the Issuer through such date."}],"balance_after":18000,"derivative":{"exercise_price":8.36,"expiration_date":"2034-06-27","underlying":"Common Stock","underlying_shares":18000},"source":{"system":"sec-edgar","filing":"0001415889-24-018649","document":"form4-07012024_090729.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1727196/000141588924018649/form4-07012024_090729.xml","form_type":"4"}},{"id":1465847,"issuer":{"id":3721,"kind":"organization","name":"Scholar Rock Holding Corp","symbol":"SRRK"},"owners":[{"id":50572,"kind":"person","name":"Vaishnaw Akshay","position":1,"cik":"0001458494","reported_name":"Vaishnaw Akshay","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2024-07-01T21:32:33.000Z","date":"2024-06-27","kind":"grant","planned":false,"acquired":true,"shares":13500,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Each restricted stock unit (\"RSU\") represents the contingent right to receive, upon vesting of the RSU, one share of the Issuer's common stock. The shares subject to this RSU vest  on the earlier of June 15, 2025 or on the date of the Issuer's next Annual Meeting subject to continued service to the Issuer through such date."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Consists of 9,455 shares of common stock and 13,500 RSUs."}],"balance_after":22955,"source":{"system":"sec-edgar","filing":"0001415889-24-018649","document":"form4-07012024_090729.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1727196/000141588924018649/form4-07012024_090729.xml","form_type":"4"}},{"id":1495026,"issuer":{"id":5502,"kind":"organization","name":"Editas Medicine, Inc.","symbol":"EDIT"},"owners":[{"id":50572,"kind":"person","name":"Vaishnaw Akshay","position":1,"cik":"0001458494","reported_name":"Vaishnaw Akshay","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (right to  buy)","published_at":"2024-06-03T20:22:55.000Z","date":"2024-05-30","kind":"grant","planned":false,"acquired":true,"shares":25000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"This option was granted on May 30, 2024 and is scheduled to vest in full on May 30, 2025."}],"balance_after":25000,"derivative":{"exercise_price":5.17,"expiration_date":"2034-05-29","underlying":"Common Stock","underlying_shares":25000},"source":{"system":"sec-edgar","filing":"0001650664-24-000054","document":"wk-form4_1717446166.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1458494/000165066424000054/wk-form4_1717446166.xml","form_type":"4"}},{"id":1813983,"issuer":{"id":3132,"kind":"organization","name":"ALNYLAM PHARMACEUTICALS, INC.","symbol":"ALNY"},"owners":[{"id":50572,"kind":"person","name":"Vaishnaw Akshay","position":1,"cik":"0001458494","reported_name":"Vaishnaw Akshay","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President"}}],"security":"Common Stock","published_at":"2023-08-07T22:04:22.000Z","date":"2023-08-04","kind":"sale","planned":false,"acquired":false,"shares":192,"price":189.31,"value":36347.52,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F3","text":"Represents shares automatically sold by the Company on behalf of the reporting person pursuant to a mandatory sell-to-cover provision in the award agreement required to cover minimum statutory tax withholding obligations that became due upon the vesting and settlement of restricted stock units reported in this form."}],"balance_after":22774,"source":{"system":"sec-edgar","filing":"0001735276-23-000076","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1178670/000173527623000076/edgardoc.xml","form_type":"4"}},{"id":1813982,"issuer":{"id":3132,"kind":"organization","name":"ALNYLAM PHARMACEUTICALS, INC.","symbol":"ALNY"},"owners":[{"id":50572,"kind":"person","name":"Vaishnaw Akshay","position":1,"cik":"0001458494","reported_name":"Vaishnaw Akshay","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President"}}],"security":"Common Stock","published_at":"2023-08-07T22:04:22.000Z","date":"2023-08-04","kind":"sale","planned":false,"acquired":false,"shares":17,"price":188.4,"value":3202.8,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F8","text":"Represents shares automatically sold by the Company on behalf of the reporting person pursuant to a mandatory sell-to-cover provision in the award agreement required to cover minimum statutory tax withholding obligations that became due upon the vesting event."},{"field":"price","element":"transactionPricePerShare","label":"F9","text":"The price reported represents the weighted average sales price of shares sold in multiple transactions at prices ranging from $188.14 to $189.05. 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 sold at each price within the range."}],"balance_after":22966,"source":{"system":"sec-edgar","filing":"0001735276-23-000076","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1178670/000173527623000076/edgardoc.xml","form_type":"4"}},{"id":1813981,"issuer":{"id":3132,"kind":"organization","name":"ALNYLAM PHARMACEUTICALS, INC.","symbol":"ALNY"},"owners":[{"id":50572,"kind":"person","name":"Vaishnaw Akshay","position":1,"cik":"0001458494","reported_name":"Vaishnaw Akshay","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President"}}],"security":"Common Stock","published_at":"2023-08-07T22:04:22.000Z","date":"2023-08-04","kind":"sale","planned":false,"acquired":false,"shares":101,"price":187.37,"value":18924.37,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F3","text":"Represents shares automatically sold by the Company on behalf of the reporting person pursuant to a mandatory sell-to-cover provision in the award agreement required to cover minimum statutory tax withholding obligations that became due upon the vesting and settlement of restricted stock units reported in this form."},{"field":"price","element":"transactionPricePerShare","label":"F7","text":"The price reported represents the weighted average sales price of shares sold in multiple transactions at prices ranging from $187.04 to $188.04. 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 sold at each price within the range."}],"balance_after":22983,"source":{"system":"sec-edgar","filing":"0001735276-23-000076","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1178670/000173527623000076/edgardoc.xml","form_type":"4"}},{"id":1813980,"issuer":{"id":3132,"kind":"organization","name":"ALNYLAM PHARMACEUTICALS, INC.","symbol":"ALNY"},"owners":[{"id":50572,"kind":"person","name":"Vaishnaw Akshay","position":1,"cik":"0001458494","reported_name":"Vaishnaw Akshay","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President"}}],"security":"Common Stock","published_at":"2023-08-07T22:04:22.000Z","date":"2023-08-04","kind":"sale","planned":false,"acquired":false,"shares":1107,"price":186.39,"value":206333.73,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F3","text":"Represents shares automatically sold by the Company on behalf of the reporting person pursuant to a mandatory sell-to-cover provision in the award agreement required to cover minimum statutory tax withholding obligations that became due upon the vesting and settlement of restricted stock units reported in this form."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"The price reported represents the weighted average sales price of shares sold in multiple transactions at prices ranging from $186.03 to $187.02. 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 sold at each price within the range."}],"balance_after":23084,"source":{"system":"sec-edgar","filing":"0001735276-23-000076","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1178670/000173527623000076/edgardoc.xml","form_type":"4"}},{"id":1813979,"issuer":{"id":3132,"kind":"organization","name":"ALNYLAM PHARMACEUTICALS, INC.","symbol":"ALNY"},"owners":[{"id":50572,"kind":"person","name":"Vaishnaw Akshay","position":1,"cik":"0001458494","reported_name":"Vaishnaw Akshay","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President"}}],"security":"Common Stock","published_at":"2023-08-07T22:04:22.000Z","date":"2023-08-04","kind":"sale","planned":false,"acquired":false,"shares":1869,"price":185.54,"value":346774.26,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F3","text":"Represents shares automatically sold by the Company on behalf of the reporting person pursuant to a mandatory sell-to-cover provision in the award agreement required to cover minimum statutory tax withholding obligations that became due upon the vesting and settlement of restricted stock units reported in this form."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"The price reported represents the weighted average sales price of shares sold in multiple transactions at prices ranging from $185.02 to $186.02. 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 sold at each price within the range."}],"balance_after":24191,"source":{"system":"sec-edgar","filing":"0001735276-23-000076","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1178670/000173527623000076/edgardoc.xml","form_type":"4"}},{"id":1813978,"issuer":{"id":3132,"kind":"organization","name":"ALNYLAM PHARMACEUTICALS, INC.","symbol":"ALNY"},"owners":[{"id":50572,"kind":"person","name":"Vaishnaw Akshay","position":1,"cik":"0001458494","reported_name":"Vaishnaw Akshay","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President"}}],"security":"Common Stock","published_at":"2023-08-07T22:04:22.000Z","date":"2023-08-04","kind":"sale","planned":false,"acquired":false,"shares":771,"price":184.7,"value":142403.7,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F3","text":"Represents shares automatically sold by the Company on behalf of the reporting person pursuant to a mandatory sell-to-cover provision in the award agreement required to cover minimum statutory tax withholding obligations that became due upon the vesting and settlement of restricted stock units reported in this form."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The price reported represents the weighted average sales price of shares sold in multiple transactions at prices ranging from $184.01 to $185.01. 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The People, Culture and Compensation Committee of the Board determined that the second performance criterion was met and the second one-third of the PSU award vested as of August 3, 2022."}],"balance_after":16298,"source":{"system":"sec-edgar","filing":"0001735276-22-000064","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1178670/000173527622000064/edgardoc.xml","form_type":"4"}},{"id":2225495,"issuer":{"id":3721,"kind":"organization","name":"Scholar Rock Holding Corp","symbol":"SRRK"},"owners":[{"id":50572,"kind":"person","name":"Vaishnaw Akshay","position":1,"cik":"0001458494","reported_name":"Vaishnaw Akshay","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (Right to Buy)","published_at":"2022-06-21T21:04:41.000Z","date":"2022-06-16","kind":"grant","acquired":true,"shares":14000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"This option shall vest and become fully exercisable on the first anniversary following the date of grant subject to continued service to the Issuer through such date."}],"balance_after":14000,"derivative":{"exercise_price":4.86,"expiration_date":"2032-06-16","underlying":"Common Stock","underlying_shares":14000},"source":{"system":"sec-edgar","filing":"0001104659-22-073038","document":"tm2218901-8_4seq1.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1727196/000110465922073038/tm2218901-8_4seq1.xml","form_type":"4"}},{"id":2234113,"issuer":{"id":5502,"kind":"organization","name":"Editas Medicine, Inc.","symbol":"EDIT"},"owners":[{"id":50572,"kind":"person","name":"Vaishnaw Akshay","position":1,"cik":"0001458494","reported_name":"Vaishnaw Akshay","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (right to buy)","published_at":"2022-06-13T20:30:48.000Z","date":"2022-06-09","kind":"grant","acquired":true,"shares":25000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"This option was granted on June 9, 2022 and is scheduled to vest in full on June 9, 2023."}],"balance_after":25000,"derivative":{"exercise_price":12.31,"expiration_date":"2032-06-08","underlying":"Common Stock","underlying_shares":25000},"source":{"system":"sec-edgar","filing":"0001415889-22-006492","document":"form4-06132022_040621.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1458494/000141588922006492/form4-06132022_040621.xml","form_type":"4"}},{"id":2253588,"issuer":{"id":3721,"kind":"organization","name":"Scholar Rock Holding Corp","symbol":"SRRK"},"owners":[{"id":50572,"kind":"person","name":"Vaishnaw Akshay","position":1,"cik":"0001458494","reported_name":"Vaishnaw Akshay","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (Right to Buy)","published_at":"2022-05-27T20:35:39.000Z","date":"2022-05-26","kind":"grant","acquired":true,"shares":28000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"This option shall vest and become fully exercisable on the earlier of the first anniversary following the date of grant or the next scheduled Annual Meeting subject to continued service to the Issuer through such date."}],"balance_after":28000,"derivative":{"exercise_price":4.75,"expiration_date":"2032-05-26","underlying":"Common Stock","underlying_shares":28000},"source":{"system":"sec-edgar","filing":"0001104659-22-065958","document":"tm2216969-8_4seq1.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1727196/000110465922065958/tm2216969-8_4seq1.xml","form_type":"4"}},{"id":2372513,"issuer":{"id":3132,"kind":"organization","name":"ALNYLAM PHARMACEUTICALS, INC.","symbol":"ALNY"},"owners":[{"id":50572,"kind":"person","name":"Vaishnaw Akshay","position":1,"cik":"0001458494","reported_name":"Vaishnaw Akshay","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President"}}],"security":"Stock Option  (right to buy)","published_at":"2022-02-25T21:11:21.000Z","date":"2022-02-23","kind":"grant","acquired":true,"shares":29842,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents the time-vested stock option portion of the reporting person's Annual Equity Award for 2021. The reporting person also received 15,936 performance stock units that will vest upon the achievement of three specific performance conditions, which will be reported on a Form 4 if and when each performance condition is met and the performance stock units vest."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The stock option vests as to 25% of the shares on the 1st anniversary of the date of the stock option grant and as to an additional 6.25% of the shares each successive three month period thereafter."}],"balance_after":29842,"derivative":{"exercise_price":147.47,"expiration_date":"2032-02-22","underlying":"Common 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the shares on the 1st anniversary of the date of the stock option grant and as to an additional 6.25% of the shares each successive three month period thereafter."}],"balance_after":22380,"derivative":{"exercise_price":169.58,"expiration_date":"2031-12-30","underlying":"Common Stock","underlying_shares":22380},"source":{"system":"sec-edgar","filing":"0001735276-22-000005","document":"edgardoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1178670/000173527622000005/edgardoc.xml","form_type":"4"}},{"id":2459904,"issuer":{"id":3132,"kind":"organization","name":"ALNYLAM PHARMACEUTICALS, INC.","symbol":"ALNY"},"owners":[{"id":50572,"kind":"person","name":"Vaishnaw Akshay","position":1,"cik":"0001458494","reported_name":"Vaishnaw Akshay","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President, R&D"}}],"security":"Common 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2021."}],"balance_after":11518,"source":{"system":"sec-edgar","filing":"0001735276-21-000097","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":20,"url":"https://www.sec.gov/Archives/edgar/data/1178670/000173527621000097/edgardoc.xml","form_type":"4"}},{"id":2459902,"issuer":{"id":3132,"kind":"organization","name":"ALNYLAM PHARMACEUTICALS, INC.","symbol":"ALNY"},"owners":[{"id":50572,"kind":"person","name":"Vaishnaw Akshay","position":1,"cik":"0001458494","reported_name":"Vaishnaw Akshay","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President, R&D"}}],"security":"Common Stock","published_at":"2021-12-23T22:23:08.000Z","date":"2021-12-23","kind":"sale","acquired":false,"shares":126,"price":193.37,"value":24364.62,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F3","text":"All sales reported on this Form 4, other than the sell-to-cover for taxes on December 22, 2021, were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 15, 2021."}],"balance_after":11663,"source":{"system":"sec-edgar","filing":"0001735276-21-000097","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":19,"url":"https://www.sec.gov/Archives/edgar/data/1178670/000173527621000097/edgardoc.xml","form_type":"4"}},{"id":2459901,"issuer":{"id":3132,"kind":"organization","name":"ALNYLAM PHARMACEUTICALS, INC.","symbol":"ALNY"},"owners":[{"id":50572,"kind":"person","name":"Vaishnaw Akshay","position":1,"cik":"0001458494","reported_name":"Vaishnaw Akshay","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President, R&D"}}],"security":"Common 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sell-to-cover for taxes on December 22, 2021, were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 15, 2021."}],"balance_after":12862,"source":{"system":"sec-edgar","filing":"0001735276-21-000097","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":16,"url":"https://www.sec.gov/Archives/edgar/data/1178670/000173527621000097/edgardoc.xml","form_type":"4"}},{"id":2459898,"issuer":{"id":3132,"kind":"organization","name":"ALNYLAM PHARMACEUTICALS, INC.","symbol":"ALNY"},"owners":[{"id":50572,"kind":"person","name":"Vaishnaw Akshay","position":1,"cik":"0001458494","reported_name":"Vaishnaw Akshay","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President, R&D"}}],"security":"Common 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2021."}],"balance_after":13202,"source":{"system":"sec-edgar","filing":"0001735276-21-000097","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":13,"url":"https://www.sec.gov/Archives/edgar/data/1178670/000173527621000097/edgardoc.xml","form_type":"4"}},{"id":2459895,"issuer":{"id":3132,"kind":"organization","name":"ALNYLAM PHARMACEUTICALS, INC.","symbol":"ALNY"},"owners":[{"id":50572,"kind":"person","name":"Vaishnaw Akshay","position":1,"cik":"0001458494","reported_name":"Vaishnaw Akshay","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President, R&D"}}],"security":"Common Stock","published_at":"2021-12-23T22:23:08.000Z","date":"2021-12-23","kind":"sale","acquired":false,"shares":144,"price":190.02,"value":27362.88,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F3","text":"All sales reported on this Form 4, other than the sell-to-cover for taxes on December 22, 2021, were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 15, 2021."}],"balance_after":13207,"source":{"system":"sec-edgar","filing":"0001735276-21-000097","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":12,"url":"https://www.sec.gov/Archives/edgar/data/1178670/000173527621000097/edgardoc.xml","form_type":"4"}},{"id":2459894,"issuer":{"id":3132,"kind":"organization","name":"ALNYLAM PHARMACEUTICALS, INC.","symbol":"ALNY"},"owners":[{"id":50572,"kind":"person","name":"Vaishnaw Akshay","position":1,"cik":"0001458494","reported_name":"Vaishnaw Akshay","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President, R&D"}}],"security":"Common 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sell-to-cover for taxes on April 20, 2021, were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 15, 2021."},{"field":"price","element":"transactionPricePerShare","label":"F10","text":"Sale prices ranged from $137.42 to $138.10."}],"balance_after":14226,"source":{"system":"sec-edgar","filing":"0001735276-21-000041","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":10,"url":"https://www.sec.gov/Archives/edgar/data/1178670/000173527621000041/edgardoc.xml","form_type":"4"}},{"id":2743259,"issuer":{"id":3132,"kind":"organization","name":"ALNYLAM PHARMACEUTICALS, INC.","symbol":"ALNY"},"owners":[{"id":50572,"kind":"person","name":"Vaishnaw Akshay","position":1,"cik":"0001458494","reported_name":"Vaishnaw Akshay","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President, R&D"}}],"security":"Common 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INC.","symbol":"ALNY"},"owners":[{"id":50572,"kind":"person","name":"Vaishnaw Akshay","position":1,"cik":"0001458494","reported_name":"Vaishnaw Akshay","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President, R&D"}}],"security":"Common Stock","published_at":"2021-04-21T22:22:42.000Z","date":"2021-04-21","kind":"sale","acquired":false,"shares":203,"price":135.41,"value":27488.23,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"All sales reported on this Form 4, other than the sell-to-cover for taxes on April 20, 2021, were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 15, 2021."},{"field":"price","element":"transactionPricePerShare","label":"F8","text":"Sale prices ranged from $135.24 to $135.96."}],"balance_after":16648,"source":{"system":"sec-edgar","filing":"0001735276-21-000041","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1178670/000173527621000041/edgardoc.xml","form_type":"4"}},{"id":2743257,"issuer":{"id":3132,"kind":"organization","name":"ALNYLAM PHARMACEUTICALS, INC.","symbol":"ALNY"},"owners":[{"id":50572,"kind":"person","name":"Vaishnaw Akshay","position":1,"cik":"0001458494","reported_name":"Vaishnaw Akshay","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President, R&D"}}],"security":"Common Stock","published_at":"2021-04-21T22:22:42.000Z","date":"2021-04-20","kind":"tax_withholding","acquired":false,"shares":85,"price":134.5634,"value":11437.889,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F7","text":"Represents shares automatically sold by the Company on behalf of the reporting person pursuant to a mandatory sell-to-cover provision in the PSU award agreement required to cover minimum statutory tax withholding obligations that became due upon the vesting event."}],"balance_after":16851,"source":{"system":"sec-edgar","filing":"0001735276-21-000041","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1178670/000173527621000041/edgardoc.xml","form_type":"4"}},{"id":2743256,"issuer":{"id":3132,"kind":"organization","name":"ALNYLAM PHARMACEUTICALS, INC.","symbol":"ALNY"},"owners":[{"id":50572,"kind":"person","name":"Vaishnaw Akshay","position":1,"cik":"0001458494","reported_name":"Vaishnaw Akshay","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President, R&D"}}],"security":"Common Stock","published_at":"2021-04-21T22:22:42.000Z","date":"2021-04-20","kind":"tax_withholding","acquired":false,"shares":2266,"price":131.75,"value":298545.5,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F7","text":"Represents shares automatically sold by the Company on behalf of the reporting person pursuant to a mandatory sell-to-cover provision in the PSU award agreement required to cover minimum statutory tax withholding obligations that became due upon the vesting event."}],"balance_after":16936,"source":{"system":"sec-edgar","filing":"0001735276-21-000041","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1178670/000173527621000041/edgardoc.xml","form_type":"4"}},{"id":2743255,"issuer":{"id":3132,"kind":"organization","name":"ALNYLAM PHARMACEUTICALS, INC.","symbol":"ALNY"},"owners":[{"id":50572,"kind":"person","name":"Vaishnaw Akshay","position":1,"cik":"0001458494","reported_name":"Vaishnaw Akshay","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President, R&D"}}],"security":"Common Stock","published_at":"2021-04-21T22:22:42.000Z","date":"2021-04-19","kind":"sale","acquired":false,"shares":417,"price":140.02,"value":58388.34,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"All sales reported on this Form 4, other than the sell-to-cover for taxes on April 20, 2021, were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 15, 2021."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"Sale prices ranged from $139.72 to $140.18."}],"balance_after":19202,"source":{"system":"sec-edgar","filing":"0001735276-21-000041","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1178670/000173527621000041/edgardoc.xml","form_type":"4"}},{"id":2743254,"issuer":{"id":3132,"kind":"organization","name":"ALNYLAM PHARMACEUTICALS, INC.","symbol":"ALNY"},"owners":[{"id":50572,"kind":"person","name":"Vaishnaw Akshay","position":1,"cik":"0001458494","reported_name":"Vaishnaw Akshay","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President, R&D"}}],"security":"Common Stock","published_at":"2021-04-21T22:22:42.000Z","date":"2021-04-19","kind":"sale","acquired":false,"shares":622,"price":138.64,"value":86234.08,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"All sales reported on this Form 4, other than the sell-to-cover for taxes on April 20, 2021, were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 15, 2021."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"Sale prices ranged from $138.34 to $139.27."}],"balance_after":19619,"source":{"system":"sec-edgar","filing":"0001735276-21-000041","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1178670/000173527621000041/edgardoc.xml","form_type":"4"}},{"id":2743253,"issuer":{"id":3132,"kind":"organization","name":"ALNYLAM PHARMACEUTICALS, INC.","symbol":"ALNY"},"owners":[{"id":50572,"kind":"person","name":"Vaishnaw Akshay","position":1,"cik":"0001458494","reported_name":"Vaishnaw Akshay","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President, R&D"}}],"security":"Common Stock","published_at":"2021-04-21T22:22:42.000Z","date":"2021-04-19","kind":"sale","acquired":false,"shares":989,"price":137.6,"value":136086.4,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"All sales reported on this Form 4, other than the sell-to-cover for taxes on April 20, 2021, were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 15, 2021."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"Sale prices ranged from $137.28 to $138.13."}],"balance_after":20241,"source":{"system":"sec-edgar","filing":"0001735276-21-000041","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1178670/000173527621000041/edgardoc.xml","form_type":"4"}},{"id":2743252,"issuer":{"id":3132,"kind":"organization","name":"ALNYLAM PHARMACEUTICALS, INC.","symbol":"ALNY"},"owners":[{"id":50572,"kind":"person","name":"Vaishnaw Akshay","position":1,"cik":"0001458494","reported_name":"Vaishnaw Akshay","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President, R&D"}}],"security":"Common Stock","published_at":"2021-04-21T22:22:42.000Z","date":"2021-04-19","kind":"sale","acquired":false,"shares":1678,"price":136.76,"value":229483.28,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"All sales reported on this Form 4, other than the sell-to-cover for taxes on April 20, 2021, were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 15, 2021."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Sale prices ranged from $136.21 to $137.17."}],"balance_after":21230,"source":{"system":"sec-edgar","filing":"0001735276-21-000041","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1178670/000173527621000041/edgardoc.xml","form_type":"4"}},{"id":2743251,"issuer":{"id":3132,"kind":"organization","name":"ALNYLAM PHARMACEUTICALS, INC.","symbol":"ALNY"},"owners":[{"id":50572,"kind":"person","name":"Vaishnaw Akshay","position":1,"cik":"0001458494","reported_name":"Vaishnaw Akshay","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President, R&D"}}],"security":"Common Stock","published_at":"2021-04-21T22:22:42.000Z","date":"2021-04-19","kind":"grant","acquired":true,"shares":5083,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On February 26, 2020, the reporting person was granted performance-based restricted stock units (PSU) in connection with the 2019 year-end compensation review.  One third of the PSU award vests upon the achievement of each of three specific clinical development, regulatory or commercial events. The People, Culture and Compensation Committee of the Board determined that the first performance criterion was met and one-third of the PSU award vested as of April 19, 2021."}],"balance_after":22908,"source":{"system":"sec-edgar","filing":"0001735276-21-000041","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1178670/000173527621000041/edgardoc.xml","form_type":"4"}},{"id":2830070,"issuer":{"id":3132,"kind":"organization","name":"ALNYLAM PHARMACEUTICALS, INC.","symbol":"ALNY"},"owners":[{"id":50572,"kind":"person","name":"Vaishnaw Akshay","position":1,"cik":"0001458494","reported_name":"Vaishnaw Akshay","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President, R&D"}}],"security":"Stock Option  (right to buy)","published_at":"2021-02-26T21:05:15.000Z","date":"2021-02-24","kind":"grant","acquired":true,"shares":28800,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents the time-vested stock option portion of the reporting person's Annual Equity Award for 2020. The reporting person also received 15,437 performance stock units that will vest upon the achievement of four specific performance conditions, which will be reported on a Form 4 if and when each performance condition is met and the performance stock units vest."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The stock option vests as to 25% of the shares on the 1st anniversary of the date of the stock option grant and as to an additional 6.25% of the shares each successive three month period thereafter."}],"balance_after":28800,"derivative":{"exercise_price":151.59,"expiration_date":"2031-02-23","underlying":"Common Stock","underlying_shares":28800},"source":{"system":"sec-edgar","filing":"0001735276-21-000024","document":"edgardoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1178670/000173527621000024/edgardoc.xml","form_type":"4"}},{"id":2859706,"issuer":{"id":3132,"kind":"organization","name":"ALNYLAM PHARMACEUTICALS, INC.","symbol":"ALNY"},"owners":[{"id":50572,"kind":"person","name":"Vaishnaw Akshay","position":1,"cik":"0001458494","reported_name":"Vaishnaw Akshay","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President, R&D"}}],"security":"Performance Stock Option 2017 (right to buy)","published_at":"2021-02-16T21:09:47.000Z","date":"2021-02-11","kind":"grant","acquired":true,"shares":8334,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F4","text":"On March 1, 2018, the reporting person was granted a performance based stock option to purchase shares of ALNY common stock in connection with the 2017 year-end compensation review. One third of the shares subject to the option vests upon the achievement of each of three specific clinical development, regulatory or commercial events. The People, Culture and Compensation Committee of the Board determined that the third performance criterion was met and the option vested as to the final one third of the shares as of February 11, 2021."}],"balance_after":25000,"derivative":{"exercise_price":119.13,"exercise_date":"2021-02-11","expiration_date":"2028-03-01","underlying":"Common Stock","underlying_shares":8334},"source":{"system":"sec-edgar","filing":"0001735276-21-000014","document":"edgardoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1178670/000173527621000014/edgardoc.xml","form_type":"4"}},{"id":2859705,"issuer":{"id":3132,"kind":"organization","name":"ALNYLAM PHARMACEUTICALS, INC.","symbol":"ALNY"},"owners":[{"id":50572,"kind":"person","name":"Vaishnaw Akshay","position":1,"cik":"0001458494","reported_name":"Vaishnaw Akshay","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President, R&D"}}],"security":"Common Stock","published_at":"2021-02-16T21:09:47.000Z","date":"2021-02-12","kind":"tax_withholding","acquired":false,"shares":92,"price":152.53,"value":14032.76,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"Represents shares automatically sold by the Company on behalf of the reporting person pursuant to a mandatory sell-to-cover provision in the PSU award agreement required to cover minimum statutory tax withholding obligations that became due upon the vesting event."}],"balance_after":17825,"source":{"system":"sec-edgar","filing":"0001735276-21-000014","document":"edgardoc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1178670/000173527621000014/edgardoc.xml","form_type":"4"}}],"next_cursor":"2021-02-16T21:09:47.000000Z,2859705"}