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Each grant, to the extent outstanding and otherwise unvested, will become fully vested should a \"change in control\" of the Issuer occur (as described in the applicable award agreement) or upon the Reporting Person's separation from service with the Issuer due to the Reporting Person's death or \"disability\" (as described in the applicable award agreement)."}],"balance_after":37000,"derivative":{"exercise_price":2.46,"expiration_date":"2036-06-09","underlying":"Common Stock","underlying_shares":37000},"source":{"system":"sec-edgar","filing":"0001193125-26-267519","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1601264/000119312526267519/ownership.xml","form_type":"4"}},{"id":744308,"issuer":{"id":5797,"kind":"organization","name":"SUTRO BIOPHARMA, INC.","symbol":"STRO"},"owners":[{"id":39163,"kind":"person","name":"Dybbs Michael","position":1,"cik":"0001601264","reported_name":"Dybbs Michael","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (right to buy)","published_at":"2026-06-09T20:14:50.000Z","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, 2027."}],"balance_after":10000,"derivative":{"exercise_price":26.09,"expiration_date":"2036-06-05","underlying":"Common Stock","underlying_shares":10000},"source":{"system":"sec-edgar","filing":"0001601264-26-000006","document":"form4-06092026_080646.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1382101/000160126426000006/form4-06092026_080646.xml","form_type":"4"}},{"id":749660,"issuer":{"id":6805,"kind":"organization","name":"Kalaris Therapeutics, Inc."},"owners":[{"id":39163,"kind":"person","name":"Dybbs Michael","position":1,"cik":"0001601264","reported_name":"Dybbs Michael","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (Right to Buy)","published_at":"2026-06-04T20:23:12.000Z","date":"2026-06-03","kind":"grant","planned":false,"acquired":true,"shares":9000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The option was granted on June 3, 2026. The shares underlying the option are scheduled to vest in full on the earlier of (i) June 3, 2027 or (ii) the date of the Issuer's 2027 Annual Meeting of Stockholders, subject to continued service."}],"balance_after":9000,"derivative":{"exercise_price":4.72,"expiration_date":"2036-06-02","underlying":"Common Stock","underlying_shares":9000},"source":{"system":"sec-edgar","filing":"0001193125-26-257465","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1754068/000119312526257465/ownership.xml","form_type":"4"}},{"id":914036,"issuer":{"id":5034,"kind":"organization","name":"SpyGlass Pharma, Inc."},"owners":[{"id":39163,"kind":"person","name":"Dybbs Michael","position":1,"cik":"0001601264","reported_name":"Dybbs Michael","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (right to 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of the total award monthly, subject to the reporting person's continued service to the issuer on each vesting date, with the first tranche vesting on January 23, 2026."}],"balance_after":1500,"derivative":{"exercise_price":10.38,"expiration_date":"2035-12-23","underlying":"Common Stock","underlying_shares":1500},"source":{"system":"sec-edgar","filing":"0001601264-25-000005","document":"form4-12292025_091245.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1382101/000160126425000005/form4-12292025_091245.xml","form_type":"4"}},{"id":1116046,"issuer":{"id":5797,"kind":"organization","name":"SUTRO BIOPHARMA, INC.","symbol":"STRO"},"owners":[{"id":39163,"kind":"person","name":"Dybbs Michael","position":1,"cik":"0001601264","reported_name":"Dybbs Michael","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (right to 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Each grant, to the extent outstanding and otherwise unvested, will become fully vested should a \"change in control\" of the Issuer occur (as described in the applicable award agreement) or upon the Reporting Person's separation from service with the Issuer due to the Reporting Person's death or \"disability\" (as described in the applicable award agreement)."}],"balance_after":16000,"derivative":{"exercise_price":14.95,"expiration_date":"2032-06-07","underlying":"Common Stock","underlying_shares":16000},"source":{"system":"sec-edgar","filing":"0001209191-22-035818","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1601264/000120919122035818/doc4.xml","form_type":"4"}},{"id":2238799,"issuer":{"id":5797,"kind":"organization","name":"SUTRO BIOPHARMA, INC.","symbol":"STRO"},"owners":[{"id":39163,"kind":"person","name":"Dybbs Michael","position":1,"cik":"0001601264","reported_name":"Dybbs Michael","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (right to buy)","published_at":"2022-06-08T23:05:33.000Z","date":"2022-06-06","kind":"grant","acquired":true,"shares":18500,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The option vests as to 8.33% of the total shares monthly, commencing July 6, 2022, 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":"0001209191-22-035208","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1382101/000120919122035208/doc4.xml","form_type":"4"}},{"id":2667586,"issuer":{"id":6346,"kind":"organization","name":"Nkarta, Inc."},"owners":[{"id":39163,"kind":"person","name":"Dybbs Michael","position":1,"cik":"0001601264","reported_name":"Dybbs Michael","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (right to buy)","published_at":"2021-06-15T14:29:48.000Z","date":"2021-06-13","kind":"grant","acquired":true,"shares":16511,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"All shares subject to the option vest 100% on the first to occur of (i) June 13, 2022, or (ii) the day immediately preceding the first annual meeting of the Issuer's stockholders to occur after the date of grant of the award. Each grant, to the extent outstanding and otherwise unvested, will become fully vested should a \"change in control\" of the Issuer occur (as described in the applicable award agreement) or upon the Reporting Person's separation from service with the Issuer due to the Reporting Person's death or \"disability\" (as described in the applicable award agreement)."}],"balance_after":16511,"derivative":{"exercise_price":25.03,"expiration_date":"2031-06-12","underlying":"Common Stock","underlying_shares":16511},"source":{"system":"sec-edgar","filing":"0000899243-21-023802","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1601264/000089924321023802/doc4.xml","form_type":"4"}},{"id":2678891,"issuer":{"id":5797,"kind":"organization","name":"SUTRO BIOPHARMA, INC.","symbol":"STRO"},"owners":[{"id":39163,"kind":"person","name":"Dybbs Michael","position":1,"cik":"0001601264","reported_name":"Dybbs Michael","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (right to buy)","published_at":"2021-06-07T21:02:00.000Z","date":"2021-06-03","kind":"grant","acquired":true,"shares":18500,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The option vests as to 8.33% of the total shares monthly, commencing July 3, 2021, with 100% of the total shares vested and exercisable on the earlier of the issuer's 2022 annual stockholders meeting or June 3, 2022,  subject to the reporting person's provision of service to the issuer on each vesting date."}],"balance_after":18500,"derivative":{"exercise_price":18.21,"expiration_date":"2031-06-02","underlying":"Common Stock","underlying_shares":18500},"source":{"system":"sec-edgar","filing":"0001209191-21-038677","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1382101/000120919121038677/doc4.xml","form_type":"4"}},{"id":3084155,"issuer":{"id":6346,"kind":"organization","name":"Nkarta, Inc."},"owners":[{"id":39163,"kind":"person","name":"Dybbs Michael","position":1,"cik":"0001601264","reported_name":"Dybbs Michael","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (right to buy)","published_at":"2020-07-14T01:50:24.000Z","date":"2020-07-09","kind":"grant","acquired":true,"shares":10700,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"All shares subject to the option vest 100% on the first anniversary of July 9, 2020, or, if earlier, on the day immediately preceding the first annual meeting of the Issuer's stockholders in 2021 at which one or more members of the Issuer's board of directors are to be elected. Each grant, to the extent outstanding and otherwise unvested, will become fully vest should a \"change in control\" of the Issuer occur (as described in the applicable award agreement) or upon the Reporting Person's separation from service with the Issuer due to the Reporting Person's death or \"disability\" (as described in the applicable award agreement)."}],"balance_after":10700,"derivative":{"exercise_price":18,"expiration_date":"2030-07-08","underlying":"Common Stock","underlying_shares":10700},"source":{"system":"sec-edgar","filing":"0000899243-20-019037","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1601264/000089924320019037/doc4.xml","form_type":"4"}},{"id":3118238,"issuer":{"id":5797,"kind":"organization","name":"SUTRO BIOPHARMA, INC.","symbol":"STRO"},"owners":[{"id":39163,"kind":"person","name":"Dybbs Michael","position":1,"cik":"0001601264","reported_name":"Dybbs 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