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Such sales were automatic and not at the discretion of the Reporting Person."},{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock\nunits. Such sales were automatic and not at the discretion of the Reporting Person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. 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Full information regarding the number of shares sold at each separate price can be furnished to the SEC staff upon request."}],"balance_after":156969,"source":{"system":"sec-edgar","filing":"0000950170-25-108912","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1658551/000095017025108912/ownership.xml","form_type":"4"}},{"id":1066418,"issuer":{"id":259,"kind":"organization","name":"Amylyx Pharmaceuticals, Inc.","symbol":"AMLX"},"owners":[{"id":21223,"kind":"person","name":"Mazzariello Gina","position":1,"cik":"0001913765","reported_name":"Mazzariello Gina","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Legal Officer"}}],"security":"Common Stock","published_at":"2025-08-14T20:20:11.000Z","date":"2025-08-12","kind":"sale","planned":true,"acquired":false,"shares":15000,"price":8.0735,"value":121102.5,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported by the Reporting Person were effected pursuant to a Rule 10b5-1 trading plan adopted on May 13, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. 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Full information regarding the number of shares sold at each separate price can be furnished to the SEC staff upon request."}],"balance_after":171969,"source":{"system":"sec-edgar","filing":"0000950170-25-108912","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1658551/000095017025108912/ownership.xml","form_type":"4"}},{"id":1133391,"issuer":{"id":259,"kind":"organization","name":"Amylyx Pharmaceuticals, Inc.","symbol":"AMLX"},"owners":[{"id":21223,"kind":"person","name":"Mazzariello Gina","position":1,"cik":"0001913765","reported_name":"Mazzariello Gina","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Legal Officer"}}],"security":"Common Stock","published_at":"2025-05-27T20:01:25.000Z","date":"2025-05-22","kind":"gift","planned":false,"acquired":false,"shares":1000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents a bona fide gift for no consideration."},{"field":"shares","element":"transactionShares","label":"F1","text":"Represents a bona fide gift for no consideration."}],"balance_after":186969,"source":{"system":"sec-edgar","filing":"0000950170-25-077677","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1658551/000095017025077677/ownership.xml","form_type":"4"}},{"id":1183407,"issuer":{"id":259,"kind":"organization","name":"Amylyx Pharmaceuticals, Inc.","symbol":"AMLX"},"owners":[{"id":21223,"kind":"person","name":"Mazzariello Gina","position":1,"cik":"0001913765","reported_name":"Mazzariello Gina","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Legal Officer"}}],"security":"Common Stock","published_at":"2025-04-02T21:12:23.000Z","date":"2025-03-31","kind":"sale","planned":false,"acquired":false,"shares":9192,"price":3.4763,"value":31954.1496,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. Such sales were automatic and not at the discretion of the Reporting Person."},{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. Such sales were automatic and not at the discretion of the Reporting Person."},{"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 $3.44 to $3.58. 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Such sales were automatic and not at the discretion of the Reporting Person."},{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. Such sales were automatic and not at the discretion of the Reporting Person."},{"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 $3.10 to $3.165. 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