{"transactions":[{"id":744309,"issuer":{"id":5797,"kind":"organization","name":"SUTRO BIOPHARMA, INC.","symbol":"STRO"},"owners":[{"id":39978,"kind":"person","name":"Hunter Heidi","position":1,"cik":"0001891841","reported_name":"Hunter Heidi","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (right to buy)","published_at":"2026-06-09T20:16:35.000Z","date":"2026-06-05","kind":"grant","planned":false,"acquired":true,"shares":10000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The option shall vest, subject to the reporting person's provision of service to the issuer on each vesting date, as to 8.33% of the total award monthly, with the first tranche vesting on July 5, 2026, and the award shall be fully vested and exercisable on the earlier of (i) the date of the issuer's 2027 annual stockholders meeting or (ii) June 5, 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vesting date, and subject to 100% acceleration upon a change of control."}],"balance_after":35144,"derivative":{"exercise_price":1.5,"expiration_date":"2035-06-05","underlying":"Common Stock","underlying_shares":35144},"source":{"system":"sec-edgar","filing":"0000905148-25-002033","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1865494/000090514825002033/form4.xml","form_type":"4"}},{"id":1127836,"issuer":{"id":8764,"kind":"organization","name":"IO Biotech, Inc."},"owners":[{"id":39978,"kind":"person","name":"Hunter Heidi","position":1,"cik":"0001891841","reported_name":"Hunter Heidi","relationship":{"director":true}}],"security":"Common 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The price reported in Column 4 above reflects the weighted average purchase price. The reporting person hereby undertakes to provide to the Securities and Exchange Commission staff, the Issuer, or a security holder of the Issuer, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote."}],"balance_after":15000,"source":{"system":"sec-edgar","filing":"0000905148-25-001960","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1865494/000090514825001960/form4.xml","form_type":"4"}},{"id":1484582,"issuer":{"id":5797,"kind":"organization","name":"SUTRO BIOPHARMA, INC.","symbol":"STRO"},"owners":[{"id":39978,"kind":"person","name":"Hunter Heidi","position":1,"cik":"0001891841","reported_name":"Hunter Heidi","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (right to 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with 100% of the total shares vested and exercisable on the earlier of the issuer's 2023 annual stockholders meeting or June 6, 2023,  subject to the reporting person's provision of service to the issuer on each vesting date."}],"balance_after":18500,"derivative":{"exercise_price":4.44,"expiration_date":"2032-06-05","underlying":"Common Stock","underlying_shares":18500},"source":{"system":"sec-edgar","filing":"0001209191-22-035207","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1382101/000120919122035207/doc4.xml","form_type":"4"}},{"id":2500240,"issuer":{"id":5797,"kind":"organization","name":"SUTRO BIOPHARMA, INC.","symbol":"STRO"},"owners":[{"id":39978,"kind":"person","name":"Hunter Heidi","position":1,"cik":"0001891841","reported_name":"Hunter Heidi","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (right to buy 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