{"transactions":[{"id":739900,"issuer":{"id":4104,"kind":"organization","name":"Arcus Biosciences, Inc."},"owners":[{"id":38757,"kind":"person","name":"KANEKO YASUNORI","position":1,"cik":"0001277503","reported_name":"KANEKO YASUNORI","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (Right to Buy)","published_at":"2026-06-12T20:28:18.000Z","date":"2026-06-11","kind":"grant","planned":false,"acquired":true,"shares":16900,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The option will vest in full on the earlier of June 11, 2027 or the next annual meeting of stockholders of the issuer. The option will become fully vested and exercisable in the event the Company is subject to a change in control."}],"balance_after":16900,"derivative":{"exercise_price":23.3,"expiration_date":"2036-06-10","underlying":"Stock Option (Rights to Buy)","underlying_shares":16900},"source":{"system":"sec-edgar","filing":"0001277503-26-000003","document":"wk-form4_1781296095.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1724521/000127750326000003/wk-form4_1781296095.xml","form_type":"4"}},{"id":739899,"issuer":{"id":4104,"kind":"organization","name":"Arcus Biosciences, Inc."},"owners":[{"id":38757,"kind":"person","name":"KANEKO YASUNORI","position":1,"cik":"0001277503","reported_name":"KANEKO YASUNORI","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-06-12T20:28:18.000Z","date":"2026-06-11","kind":"grant","planned":false,"acquired":true,"shares":5700,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents the grant of restricted stock units that vest in full on the earlier of June 11, 2027 or the next annual meeting of stockholders of the issuer. The RSUs will become fully vested in the event the Company is subject to a change in control."}],"balance_after":25700,"source":{"system":"sec-edgar","filing":"0001277503-26-000003","document":"wk-form4_1781296095.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1724521/000127750326000003/wk-form4_1781296095.xml","form_type":"4"}},{"id":1113501,"issuer":{"id":4104,"kind":"organization","name":"Arcus Biosciences, Inc."},"owners":[{"id":38757,"kind":"person","name":"KANEKO YASUNORI","position":1,"cik":"0001277503","reported_name":"KANEKO YASUNORI","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (Right to Buy)","published_at":"2025-06-12T20:28:07.000Z","date":"2025-06-10","kind":"grant","planned":false,"acquired":true,"shares":38300,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The option will vest in full on the earlier of June 10, 2026 or the next annual meeting of stockholders of the issuer. The option will become fully vested and exercisable in the event the Company is subject to a change in control."}],"balance_after":38300,"derivative":{"exercise_price":10.02,"expiration_date":"2035-06-09","underlying":"Common Stock","underlying_shares":38300},"source":{"system":"sec-edgar","filing":"0001724521-25-000087","document":"wk-form4_1749760080.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1724521/000172452125000087/wk-form4_1749760080.xml","form_type":"4"}},{"id":1113500,"issuer":{"id":4104,"kind":"organization","name":"Arcus Biosciences, Inc."},"owners":[{"id":38757,"kind":"person","name":"KANEKO YASUNORI","position":1,"cik":"0001277503","reported_name":"KANEKO YASUNORI","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2025-06-12T20:28:07.000Z","date":"2025-06-10","kind":"grant","planned":false,"acquired":true,"shares":13300,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents the grant of restricted stock units that vest in full on the earlier of June 10, 2026 or the next annual meeting of stockholders of the issuer. The RSUs will become fully vested in the event the Company is subject to a change in control."}],"balance_after":33300,"source":{"system":"sec-edgar","filing":"0001724521-25-000087","document":"wk-form4_1749760080.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1724521/000172452125000087/wk-form4_1749760080.xml","form_type":"4"}},{"id":1240791,"issuer":{"id":4104,"kind":"organization","name":"Arcus Biosciences, Inc."},"owners":[{"id":38757,"kind":"person","name":"KANEKO YASUNORI","position":1,"cik":"0001277503","reported_name":"KANEKO YASUNORI","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2025-02-28T00:06:05.000Z","date":"2025-02-27","kind":"purchase","planned":false,"acquired":true,"shares":20000,"price":10.06,"value":201200.0,"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 purchased in multiple transactions at prices ranging from $10.00 to $10.16, inclusive. The reporting person undertakes\nto provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each\nseparate price within the ranges set forth in this footnote."}],"balance_after":28400,"source":{"system":"sec-edgar","filing":"0001724521-25-000046","document":"wk-form4_1740701159.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1724521/000172452125000046/wk-form4_1740701159.xml","form_type":"4"}},{"id":1486879,"issuer":{"id":4104,"kind":"organization","name":"Arcus Biosciences, Inc."},"owners":[{"id":38757,"kind":"person","name":"KANEKO YASUNORI","position":1,"cik":"0001277503","reported_name":"KANEKO YASUNORI","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (Right to Buy)","published_at":"2024-06-07T22:21:03.000Z","date":"2024-06-06","kind":"grant","planned":false,"acquired":true,"shares":24000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The option will vest in full on the earlier of June 6, 2025 or the next annual meeting of stockholders of the issuer. The option will become fully vested and exercisable in the event the Company is subject to a change in control."}],"balance_after":24000,"derivative":{"exercise_price":15.9,"expiration_date":"2034-06-05","underlying":"Common Stock","underlying_shares":24000},"source":{"system":"sec-edgar","filing":"0001724521-24-000116","document":"wk-form4_1717798857.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1724521/000172452124000116/wk-form4_1717798857.xml","form_type":"4"}},{"id":1486878,"issuer":{"id":4104,"kind":"organization","name":"Arcus Biosciences, Inc."},"owners":[{"id":38757,"kind":"person","name":"KANEKO YASUNORI","position":1,"cik":"0001277503","reported_name":"KANEKO YASUNORI","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2024-06-07T22:21:03.000Z","date":"2024-06-06","kind":"grant","planned":false,"acquired":true,"shares":8400,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents the grant of restricted stock units that vest in full on the earlier of June 6, 2025 or the next annual meeting of stockholders of the issuer. The RSUs will become fully vested in the event the Company is subject to a change in control."}],"balance_after":15200,"source":{"system":"sec-edgar","filing":"0001724521-24-000116","document":"wk-form4_1717798857.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1724521/000172452124000116/wk-form4_1717798857.xml","form_type":"4"}},{"id":1852377,"issuer":{"id":4104,"kind":"organization","name":"Arcus Biosciences, Inc."},"owners":[{"id":38757,"kind":"person","name":"KANEKO YASUNORI","position":1,"cik":"0001277503","reported_name":"KANEKO YASUNORI","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (Right to Buy)","published_at":"2023-06-17T00:03:36.000Z","date":"2023-06-15","kind":"grant","planned":false,"acquired":true,"shares":19500,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The option will vest in full on the earlier of June 15, 2024 or the next annual meeting of stockholders of the issuer. The option will become fully vested and exercisable in the event the Company is subject to a change in control."}],"balance_after":19500,"derivative":{"exercise_price":19.6,"expiration_date":"2033-06-14","underlying":"Common Stock","underlying_shares":19500},"source":{"system":"sec-edgar","filing":"0001209191-23-038141","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1724521/000120919123038141/doc4.xml","form_type":"4"}},{"id":1852376,"issuer":{"id":4104,"kind":"organization","name":"Arcus Biosciences, Inc."},"owners":[{"id":38757,"kind":"person","name":"KANEKO YASUNORI","position":1,"cik":"0001277503","reported_name":"KANEKO YASUNORI","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2023-06-17T00:03:36.000Z","date":"2023-06-15","kind":"grant","planned":false,"acquired":true,"shares":6800,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents the grant of restricted stock units that vest in full on the earlier of June 15, 2024 or the next annual meeting of stockholders of the issuer. The RSUs will become fully vested in the event the Company is subject to a change in control."}],"balance_after":6800,"source":{"system":"sec-edgar","filing":"0001209191-23-038141","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1724521/000120919123038141/doc4.xml","form_type":"4"}},{"id":2230003,"issuer":{"id":4104,"kind":"organization","name":"Arcus Biosciences, Inc."},"owners":[{"id":38757,"kind":"person","name":"KANEKO YASUNORI","position":1,"cik":"0001277503","reported_name":"KANEKO YASUNORI","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (Right to Buy)","published_at":"2022-06-16T20:21:33.000Z","date":"2022-06-14","kind":"grant","acquired":true,"shares":16800,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The option will vest in full on the earlier of June 14, 2023 or the next annual meeting of stockholders of the issuer. The option will become fully vested and exercisable in the event the Company is subject to a change in control."}],"balance_after":16800,"derivative":{"exercise_price":20.62,"expiration_date":"2032-06-13","underlying":"Common Stock","underlying_shares":16800},"source":{"system":"sec-edgar","filing":"0001209191-22-037409","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1724521/000120919122037409/doc4.xml","form_type":"4"}},{"id":2230002,"issuer":{"id":4104,"kind":"organization","name":"Arcus Biosciences, Inc."},"owners":[{"id":38757,"kind":"person","name":"KANEKO YASUNORI","position":1,"cik":"0001277503","reported_name":"KANEKO YASUNORI","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2022-06-16T20:21:33.000Z","date":"2022-06-14","kind":"grant","acquired":true,"shares":4100,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents the grant of restricted stock units that vest in full on the earlier of June 14, 2023 or the next annual meeting of stockholders of the issuer. The RSUs will become fully vested in the event the Company is subject to a change in control."}],"balance_after":4100,"source":{"system":"sec-edgar","filing":"0001209191-22-037409","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1724521/000120919122037409/doc4.xml","form_type":"4"}},{"id":2679411,"issuer":{"id":4104,"kind":"organization","name":"Arcus Biosciences, Inc."},"owners":[{"id":38757,"kind":"person","name":"KANEKO YASUNORI","position":1,"cik":"0001277503","reported_name":"KANEKO YASUNORI","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (Right to Buy)","published_at":"2021-06-07T20:36:37.000Z","date":"2021-06-03","kind":"grant","acquired":true,"shares":14100,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"The option will vest in full on the earlier of (i) 12 months following the date of grant or (ii) the date of the next annual stockholder meeting following the grant. The option becomes fully vested and exercisable in the event the Company is subject to a change in control."}],"balance_after":14100,"derivative":{"exercise_price":24.79,"expiration_date":"2031-06-02","underlying":"Common Stock","underlying_shares":14100},"source":{"system":"sec-edgar","filing":"0001209191-21-038619","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1724521/000120919121038619/doc4.xml","form_type":"4"}},{"id":2679410,"issuer":{"id":4104,"kind":"organization","name":"Arcus Biosciences, Inc."},"owners":[{"id":38757,"kind":"person","name":"KANEKO YASUNORI","position":1,"cik":"0001277503","reported_name":"KANEKO YASUNORI","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2021-06-07T20:36:37.000Z","date":"2021-06-03","kind":"grant","acquired":true,"shares":3000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents the grant of restricted stock units that vest 100% on the earlier of June 3, 2022 or the next annual meeting of the stockholders of the issuer. The RSUs will become fully vested in the event the Company is subject to a change in control."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 3,000 shares of restricted stock units (previously reported) that vested on June 3, 2021."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Four thousand one hundred thirty-three (4,133) shares previously held directly by the reporting person were transferred to reporting person's trust."}],"balance_after":6000,"source":{"system":"sec-edgar","filing":"0001209191-21-038619","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1724521/000120919121038619/doc4.xml","form_type":"4"}},{"id":2739682,"issuer":{"id":4104,"kind":"organization","name":"Arcus Biosciences, Inc."},"owners":[{"id":38757,"kind":"person","name":"KANEKO YASUNORI","position":1,"cik":"0001277503","reported_name":"KANEKO YASUNORI","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2021-04-26T20:16:03.000Z","date":"2021-04-23","kind":"purchase","acquired":true,"shares":4133,"price":31.37,"value":129652.21,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares purchased in a private transaction from Dr. William Grossman, Arcus's Chief Medical Officer."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Thirty-five thousand (35,000) shares previously held directly by the reporting person were transferred to reporting person's trust."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"The reporting person's direct ownership includes three thousand (3,000) shares that are Restricted Stock Units that will not vest until June 3, 2021."}],"balance_after":7133,"source":{"system":"sec-edgar","filing":"0001179110-21-004605","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1724521/000117911021004605/edgar.xml","form_type":"4"}},{"id":3118853,"issuer":{"id":4104,"kind":"organization","name":"Arcus Biosciences, Inc."},"owners":[{"id":38757,"kind":"person","name":"KANEKO YASUNORI","position":1,"cik":"0001277503","reported_name":"KANEKO YASUNORI","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (Rights to Buy)","published_at":"2020-06-08T20:31:23.000Z","date":"2020-06-05","kind":"exercise","acquired":false,"shares":35000,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":0,"derivative":{"exercise_price":7.99,"exercise_date":"2020-06-04","expiration_date":"2029-06-05","underlying":"Common Stock","underlying_shares":35000},"source":{"system":"sec-edgar","filing":"0001209191-20-034985","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1724521/000120919120034985/doc4.xml","form_type":"4"}},{"id":3118852,"issuer":{"id":4104,"kind":"organization","name":"Arcus Biosciences, Inc."},"owners":[{"id":38757,"kind":"person","name":"KANEKO YASUNORI","position":1,"cik":"0001277503","reported_name":"KANEKO YASUNORI","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (Right to Buy)","published_at":"2020-06-08T20:31:23.000Z","date":"2020-06-04","kind":"grant","acquired":true,"shares":14000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The option will vest in full on the earlier of (i) 12 months following the date of grant or (ii) the date of the next annual stockholder meeting following the grant. The option becomes fully vested and exercisable in the event the Company is subject to a change in control."}],"balance_after":14000,"derivative":{"exercise_price":30.05,"expiration_date":"2030-06-03","underlying":"Common Stock","underlying_shares":14000},"source":{"system":"sec-edgar","filing":"0001209191-20-034985","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1724521/000120919120034985/doc4.xml","form_type":"4"}},{"id":3118851,"issuer":{"id":4104,"kind":"organization","name":"Arcus Biosciences, Inc."},"owners":[{"id":38757,"kind":"person","name":"KANEKO YASUNORI","position":1,"cik":"0001277503","reported_name":"KANEKO YASUNORI","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-06-08T20:31:23.000Z","date":"2020-06-05","kind":"exercise","acquired":true,"shares":35000,"price":7.99,"value":279650.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Represents the exercise of options to purchase common stock by the reporting person. No shares were sold by the reporting person, and the shares received upon the exercise of such options are subject to a lock-up agreement with the underwriters for the Company's recent public offering."}],"balance_after":38000,"source":{"system":"sec-edgar","filing":"0001209191-20-034985","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1724521/000120919120034985/doc4.xml","form_type":"4"}},{"id":3118850,"issuer":{"id":4104,"kind":"organization","name":"Arcus Biosciences, Inc."},"owners":[{"id":38757,"kind":"person","name":"KANEKO YASUNORI","position":1,"cik":"0001277503","reported_name":"KANEKO YASUNORI","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-06-08T20:31:23.000Z","date":"2020-06-04","kind":"grant","acquired":true,"shares":3000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents the grant of restricted stock units that vest 100% on the earlier of June 4, 2021 or the next annual meeting of the stockholders of the issuer. The RSUs will become fully vested in the event the Company is subject to a change in control"}],"balance_after":3000,"source":{"system":"sec-edgar","filing":"0001209191-20-034985","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1724521/000120919120034985/doc4.xml","form_type":"4"}},{"id":3495822,"issuer":{"id":4104,"kind":"organization","name":"Arcus Biosciences, Inc."},"owners":[{"id":38757,"kind":"person","name":"KANEKO YASUNORI","position":1,"cik":"0001277503","reported_name":"KANEKO YASUNORI","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (Right to buy)","published_at":"2019-06-10T19:14:06.000Z","date":"2019-06-06","kind":"grant","acquired":true,"shares":35000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The option will vest in full on the earlier of (i) 12 months following the date of grant or (ii) the date of the next annual stockholder meeting following the grant. The option becomes fully vested and exercisable in the event the Company is subject to a change in control."}],"balance_after":35000,"derivative":{"exercise_price":7.99,"expiration_date":"2029-06-05","underlying":"Common Stock","underlying_shares":35000},"source":{"system":"sec-edgar","filing":"0001209191-19-035752","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1724521/000120919119035752/doc4.xml","form_type":"4"}},{"id":3786439,"issuer":{"id":2501,"kind":"organization","name":"SI-BONE, Inc.","symbol":"SIBN"},"owners":[{"id":147193,"kind":"organization","name":"Skyline Venture Partners V LP","position":1,"cik":"0001419187","reported_name":"Skyline Venture Partners V LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":147194,"kind":"organization","name":"Skyline Venture Management V, LLC","position":2,"cik":"0001434887","reported_name":"Skyline Venture Management V, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":40449,"kind":"person","name":"Freund John Gordon","position":3,"cik":"0001296771","reported_name":"Freund John Gordon","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":38757,"kind":"person","name":"KANEKO YASUNORI","position":4,"cik":"0001277503","reported_name":"KANEKO YASUNORI","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Series 7 Preferred Stock","published_at":"2018-10-19T20:48:46.000Z","date":"2018-10-19","kind":"exercise","acquired":false,"shares":398676,"ownership":{"direct":false,"nature":"By Skyline Venture Partners V, L.P."},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"The Issuer's Series 4 Preferred Stock, Series 5 Preferred Stock and Series 7 Preferred Stock automatically converted into an equal number of shares of Issuer's common stock immediately upon the closing of the Issuer's initial public offering and has no expiration date."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The Issuer's Series 4 Preferred Stock, Series 5 Preferred Stock and Series 7 Preferred Stock automatically converted into an equal number of shares of Issuer's common stock immediately upon the closing of the Issuer's initial public offering and has no expiration date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The Issuer's Series 4 Preferred Stock, Series 5 Preferred Stock and Series 7 Preferred Stock automatically converted into an equal number of shares of Issuer's common stock immediately upon the closing of the Issuer's initial public offering and has no expiration date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"The Issuer's Series 4 Preferred Stock, Series 5 Preferred Stock and Series 7 Preferred Stock automatically converted into an equal number of shares of Issuer's common stock immediately upon the closing of the Issuer's initial public offering and has no expiration date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Shares held by Skyline Venture Partners V, L.P. (\"SVP V\"). Skyline Venture Management V, LLC (\"LLC\") is the general partner of SVP V and as such may be deemed to have voting and investment power with respect to the securities of SVP V. John G. Freund, a member of the Issuer's board of directors, together with Yasunori Kaneko, are the managing directors of LLC and each may be deemed to have voting and investment power with respect to the securities held by SVP V.  Dr. Freund and Mr. Kaneko disclaim beneficial ownership of such securities, except to the extent of their pecuniary interest therein."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":398676},"source":{"system":"sec-edgar","filing":"0001209191-18-055698","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":12,"url":"https://www.sec.gov/Archives/edgar/data/1459839/000120919118055698/doc4.xml","form_type":"4"}},{"id":3786438,"issuer":{"id":2501,"kind":"organization","name":"SI-BONE, Inc.","symbol":"SIBN"},"owners":[{"id":147193,"kind":"organization","name":"Skyline Venture Partners V LP","position":1,"cik":"0001419187","reported_name":"Skyline Venture Partners V LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":147194,"kind":"organization","name":"Skyline Venture Management V, LLC","position":2,"cik":"0001434887","reported_name":"Skyline Venture Management V, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":40449,"kind":"person","name":"Freund John Gordon","position":3,"cik":"0001296771","reported_name":"Freund John Gordon","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":38757,"kind":"person","name":"KANEKO YASUNORI","position":4,"cik":"0001277503","reported_name":"KANEKO YASUNORI","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Series 6 Preferred Stock","published_at":"2018-10-19T20:48:46.000Z","date":"2018-10-19","kind":"exercise","acquired":false,"shares":652347,"ownership":{"direct":false,"nature":"By Skyline Venture Partners V, L.P."},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"The Issuer's Series 6 Preferred Stock automatically converted into approximately 1.05878 shares of Issuer's common stock immediately upon the closing of the Issuer's initial public offering and has no expiration date."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The Issuer's Series 6 Preferred Stock automatically converted into approximately 1.05878 shares of Issuer's common stock immediately upon the closing of the Issuer's initial public offering and has no expiration date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The Issuer's Series 6 Preferred Stock automatically converted into approximately 1.05878 shares of Issuer's common stock immediately upon the closing of the Issuer's initial public offering and has no expiration date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The Issuer's Series 6 Preferred Stock automatically converted into approximately 1.05878 shares of Issuer's common stock immediately upon the closing of the Issuer's initial public offering and has no expiration date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Shares held by Skyline Venture Partners V, L.P. (\"SVP V\"). Skyline Venture Management V, LLC (\"LLC\") is the general partner of SVP V and as such may be deemed to have voting and investment power with respect to the securities of SVP V. John G. Freund, a member of the Issuer's board of directors, together with Yasunori Kaneko, are the managing directors of LLC and each may be deemed to have voting and investment power with respect to the securities held by SVP V.  Dr. Freund and Mr. Kaneko disclaim beneficial ownership of such securities, except to the extent of their pecuniary interest therein."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":690689},"source":{"system":"sec-edgar","filing":"0001209191-18-055698","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":11,"url":"https://www.sec.gov/Archives/edgar/data/1459839/000120919118055698/doc4.xml","form_type":"4"}},{"id":3786437,"issuer":{"id":2501,"kind":"organization","name":"SI-BONE, Inc.","symbol":"SIBN"},"owners":[{"id":147193,"kind":"organization","name":"Skyline Venture Partners V LP","position":1,"cik":"0001419187","reported_name":"Skyline Venture Partners V LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":147194,"kind":"organization","name":"Skyline Venture Management V, LLC","position":2,"cik":"0001434887","reported_name":"Skyline Venture Management V, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":40449,"kind":"person","name":"Freund John Gordon","position":3,"cik":"0001296771","reported_name":"Freund John Gordon","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":38757,"kind":"person","name":"KANEKO YASUNORI","position":4,"cik":"0001277503","reported_name":"KANEKO YASUNORI","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Series 5 Preferred Stock","published_at":"2018-10-19T20:48:46.000Z","date":"2018-10-19","kind":"exercise","acquired":false,"shares":792195,"ownership":{"direct":false,"nature":"By Skyline Venture Partners V, L.P."},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"The Issuer's Series 4 Preferred Stock, Series 5 Preferred Stock and Series 7 Preferred Stock automatically converted into an equal number of shares of Issuer's common stock immediately upon the closing of the Issuer's initial public offering and has no expiration date."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The Issuer's Series 4 Preferred Stock, Series 5 Preferred Stock and Series 7 Preferred Stock automatically converted into an equal number of shares of Issuer's common stock immediately upon the closing of the Issuer's initial public offering and has no expiration date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The Issuer's Series 4 Preferred Stock, Series 5 Preferred Stock and Series 7 Preferred Stock automatically converted into an equal number of shares of Issuer's common stock immediately upon the closing of the Issuer's initial public offering and has no expiration date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"The Issuer's Series 4 Preferred Stock, Series 5 Preferred Stock and Series 7 Preferred Stock automatically converted into an equal number of shares of Issuer's common stock immediately upon the closing of the Issuer's initial public offering and has no expiration date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Shares held by Skyline Venture Partners V, L.P. (\"SVP V\"). Skyline Venture Management V, LLC (\"LLC\") is the general partner of SVP V and as such may be deemed to have voting and investment power with respect to the securities of SVP V. John G. Freund, a member of the Issuer's board of directors, together with Yasunori Kaneko, are the managing directors of LLC and each may be deemed to have voting and investment power with respect to the securities held by SVP V.  Dr. Freund and Mr. Kaneko disclaim beneficial ownership of such securities, except to the extent of their pecuniary interest therein."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":792195},"source":{"system":"sec-edgar","filing":"0001209191-18-055698","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":10,"url":"https://www.sec.gov/Archives/edgar/data/1459839/000120919118055698/doc4.xml","form_type":"4"}},{"id":3786436,"issuer":{"id":2501,"kind":"organization","name":"SI-BONE, Inc.","symbol":"SIBN"},"owners":[{"id":147193,"kind":"organization","name":"Skyline Venture Partners V LP","position":1,"cik":"0001419187","reported_name":"Skyline Venture Partners V LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":147194,"kind":"organization","name":"Skyline Venture Management V, LLC","position":2,"cik":"0001434887","reported_name":"Skyline Venture Management V, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":40449,"kind":"person","name":"Freund John Gordon","position":3,"cik":"0001296771","reported_name":"Freund John Gordon","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":38757,"kind":"person","name":"KANEKO YASUNORI","position":4,"cik":"0001277503","reported_name":"KANEKO YASUNORI","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Series 4 Preferred Stock","published_at":"2018-10-19T20:48:46.000Z","date":"2018-10-19","kind":"exercise","acquired":false,"shares":2213425,"ownership":{"direct":false,"nature":"By Skyline Venture Partners V, L.P."},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"The Issuer's Series 4 Preferred Stock, Series 5 Preferred Stock and Series 7 Preferred Stock automatically converted into an equal number of shares of Issuer's common stock immediately upon the closing of the Issuer's initial public offering and has no expiration date."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The Issuer's Series 4 Preferred Stock, Series 5 Preferred Stock and Series 7 Preferred Stock automatically converted into an equal number of shares of Issuer's common stock immediately upon the closing of the Issuer's initial public offering and has no expiration date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The Issuer's Series 4 Preferred Stock, Series 5 Preferred Stock and Series 7 Preferred Stock automatically converted into an equal number of shares of Issuer's common stock immediately upon the closing of the Issuer's initial public offering and has no expiration date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"The Issuer's Series 4 Preferred Stock, Series 5 Preferred Stock and Series 7 Preferred Stock automatically converted into an equal number of shares of Issuer's common stock immediately upon the closing of the Issuer's initial public offering and has no expiration date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Shares held by Skyline Venture Partners V, L.P. (\"SVP V\"). Skyline Venture Management V, LLC (\"LLC\") is the general partner of SVP V and as such may be deemed to have voting and investment power with respect to the securities of SVP V. John G. Freund, a member of the Issuer's board of directors, together with Yasunori Kaneko, are the managing directors of LLC and each may be deemed to have voting and investment power with respect to the securities held by SVP V.  Dr. Freund and Mr. Kaneko disclaim beneficial ownership of such securities, except to the extent of their pecuniary interest therein."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":2213425},"source":{"system":"sec-edgar","filing":"0001209191-18-055698","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1459839/000120919118055698/doc4.xml","form_type":"4"}},{"id":3786435,"issuer":{"id":2501,"kind":"organization","name":"SI-BONE, Inc.","symbol":"SIBN"},"owners":[{"id":147193,"kind":"organization","name":"Skyline Venture Partners V LP","position":1,"cik":"0001419187","reported_name":"Skyline Venture Partners V LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":147194,"kind":"organization","name":"Skyline Venture Management V, LLC","position":2,"cik":"0001434887","reported_name":"Skyline Venture Management V, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":40449,"kind":"person","name":"Freund John Gordon","position":3,"cik":"0001296771","reported_name":"Freund John Gordon","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":38757,"kind":"person","name":"KANEKO YASUNORI","position":4,"cik":"0001277503","reported_name":"KANEKO YASUNORI","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Series 5 Preferred Stock","published_at":"2018-10-19T20:48:46.000Z","date":"2018-10-19","kind":"sale","acquired":false,"shares":23904,"price":14,"value":334656.0,"ownership":{"direct":false,"nature":"By Skyline Venture Partners V, L.P."},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"The Issuer's Series 4 Preferred Stock, Series 5 Preferred Stock and Series 7 Preferred Stock automatically converted into an equal number of shares of Issuer's common stock immediately upon the closing of the Issuer's initial public offering and has no expiration date."},{"field":"kind","element":"transactionCoding","label":"F5","text":"Immediately prior to the closing of the Issuer's initial public offering, SVP V exercised a warrant to purchase 39,421 shares of Series 5 Preferred Stock at an exercise price of $9.10 per share.  The exercise price was paid on a net exercise cashless basis calculated using the Issuer's initial public offering price of $15.00, resulting in the Issuer withholding 23,904 of the warrant shares to pay the exercise price and issuing SVP V the remaining 15,517 shares."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The Issuer's Series 4 Preferred Stock, Series 5 Preferred Stock and Series 7 Preferred Stock automatically converted into an equal number of shares of Issuer's common stock immediately upon the closing of the Issuer's initial public offering and has no expiration date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"The Issuer's Series 4 Preferred Stock, Series 5 Preferred Stock and Series 7 Preferred Stock automatically converted into an equal number of shares of Issuer's common stock immediately upon the closing of the Issuer's initial public offering and has no expiration date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Shares held by Skyline Venture Partners V, L.P. (\"SVP V\"). Skyline Venture Management V, LLC (\"LLC\") is the general partner of SVP V and as such may be deemed to have voting and investment power with respect to the securities of SVP V. John G. Freund, a member of the Issuer's board of directors, together with Yasunori Kaneko, are the managing directors of LLC and each may be deemed to have voting and investment power with respect to the securities held by SVP V.  Dr. Freund and Mr. Kaneko disclaim beneficial ownership of such securities, except to the extent of their pecuniary interest therein."}],"balance_after":792195,"derivative":{"underlying":"Common Stock","underlying_shares":23904},"source":{"system":"sec-edgar","filing":"0001209191-18-055698","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1459839/000120919118055698/doc4.xml","form_type":"4"}},{"id":3786434,"issuer":{"id":2501,"kind":"organization","name":"SI-BONE, Inc.","symbol":"SIBN"},"owners":[{"id":147193,"kind":"organization","name":"Skyline Venture Partners V LP","position":1,"cik":"0001419187","reported_name":"Skyline Venture Partners V LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":147194,"kind":"organization","name":"Skyline Venture Management V, LLC","position":2,"cik":"0001434887","reported_name":"Skyline Venture Management V, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":40449,"kind":"person","name":"Freund John Gordon","position":3,"cik":"0001296771","reported_name":"Freund John Gordon","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":38757,"kind":"person","name":"KANEKO YASUNORI","position":4,"cik":"0001277503","reported_name":"KANEKO YASUNORI","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Series 5 Preferred Stock","published_at":"2018-10-19T20:48:46.000Z","date":"2018-10-19","kind":"other","acquired":true,"shares":39421,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"By Skyline Venture Partners V, L.P."},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The Issuer's Series 4 Preferred Stock, Series 5 Preferred Stock and Series 7 Preferred Stock automatically converted into an equal number of shares of Issuer's common stock immediately upon the closing of the Issuer's initial public offering and has no expiration date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"The Issuer's Series 4 Preferred Stock, Series 5 Preferred Stock and Series 7 Preferred Stock automatically converted into an equal number of shares of Issuer's common stock immediately upon the closing of the Issuer's initial public offering and has no expiration date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Shares held by Skyline Venture Partners V, L.P. (\"SVP V\"). Skyline Venture Management V, LLC (\"LLC\") is the general partner of SVP V and as such may be deemed to have voting and investment power with respect to the securities of SVP V. John G. Freund, a member of the Issuer's board of directors, together with Yasunori Kaneko, are the managing directors of LLC and each may be deemed to have voting and investment power with respect to the securities held by SVP V.  Dr. Freund and Mr. Kaneko disclaim beneficial ownership of such securities, except to the extent of their pecuniary interest therein."}],"balance_after":816099,"derivative":{"exercise_price":9.1,"underlying":"Common Stock","underlying_shares":39421},"source":{"system":"sec-edgar","filing":"0001209191-18-055698","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1459839/000120919118055698/doc4.xml","form_type":"4"}},{"id":3786433,"issuer":{"id":2501,"kind":"organization","name":"SI-BONE, Inc.","symbol":"SIBN"},"owners":[{"id":147193,"kind":"organization","name":"Skyline Venture Partners V LP","position":1,"cik":"0001419187","reported_name":"Skyline Venture Partners V LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":147194,"kind":"organization","name":"Skyline Venture Management V, LLC","position":2,"cik":"0001434887","reported_name":"Skyline Venture Management V, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":40449,"kind":"person","name":"Freund John Gordon","position":3,"cik":"0001296771","reported_name":"Freund John Gordon","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":38757,"kind":"person","name":"KANEKO YASUNORI","position":4,"cik":"0001277503","reported_name":"KANEKO YASUNORI","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Warrant (right to buy)","published_at":"2018-10-19T20:48:46.000Z","date":"2018-10-19","kind":"other","acquired":false,"shares":39421,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"By Skyline Venture Partners V, L.P."},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"Shares subject to the warrant are immediately exercisable.  The warrant will expire in connection with the closing of the Issuer's initial public offering."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"Shares subject to the warrant are immediately exercisable.  The warrant will expire in connection with the closing of the Issuer's initial public offering."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Shares held by Skyline Venture Partners V, L.P. (\"SVP V\"). Skyline Venture Management V, LLC (\"LLC\") is the general partner of SVP V and as such may be deemed to have voting and investment power with respect to the securities of SVP V. John G. Freund, a member of the Issuer's board of directors, together with Yasunori Kaneko, are the managing directors of LLC and each may be deemed to have voting and investment power with respect to the securities held by SVP V.  Dr. Freund and Mr. Kaneko disclaim beneficial ownership of such securities, except to the extent of their pecuniary interest therein."}],"balance_after":0,"derivative":{"exercise_price":9.1,"underlying":"Series 5 Preferred Stock","underlying_shares":39421},"source":{"system":"sec-edgar","filing":"0001209191-18-055698","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1459839/000120919118055698/doc4.xml","form_type":"4"}},{"id":3786432,"issuer":{"id":2501,"kind":"organization","name":"SI-BONE, Inc.","symbol":"SIBN"},"owners":[{"id":147193,"kind":"organization","name":"Skyline Venture Partners V LP","position":1,"cik":"0001419187","reported_name":"Skyline Venture Partners V LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":147194,"kind":"organization","name":"Skyline Venture Management V, LLC","position":2,"cik":"0001434887","reported_name":"Skyline Venture Management V, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":40449,"kind":"person","name":"Freund John Gordon","position":3,"cik":"0001296771","reported_name":"Freund John Gordon","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":38757,"kind":"person","name":"KANEKO YASUNORI","position":4,"cik":"0001277503","reported_name":"KANEKO YASUNORI","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2018-10-19T20:48:46.000Z","date":"2018-10-19","kind":"purchase","acquired":true,"shares":325000,"price":15,"value":4875000.0,"ownership":{"direct":false,"nature":"By Skyline Venture Partners V, L.P."},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Shares held by Skyline Venture Partners V, L.P. (\"SVP V\"). Skyline Venture Management V, LLC (\"LLC\") is the general partner of SVP V and as such may be deemed to have voting and investment power with respect to the securities of SVP V. John G. Freund, a member of the Issuer's board of directors, together with Yasunori Kaneko, are the managing directors of LLC and each may be deemed to have voting and investment power with respect to the securities held by SVP V.  Dr. Freund and Mr. Kaneko disclaim beneficial ownership of such securities, except to the extent of their pecuniary interest therein."}],"balance_after":4419985,"source":{"system":"sec-edgar","filing":"0001209191-18-055698","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1459839/000120919118055698/doc4.xml","form_type":"4"}},{"id":3786431,"issuer":{"id":2501,"kind":"organization","name":"SI-BONE, Inc.","symbol":"SIBN"},"owners":[{"id":147193,"kind":"organization","name":"Skyline Venture Partners V LP","position":1,"cik":"0001419187","reported_name":"Skyline Venture Partners V LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":147194,"kind":"organization","name":"Skyline Venture Management V, LLC","position":2,"cik":"0001434887","reported_name":"Skyline Venture Management V, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":40449,"kind":"person","name":"Freund John Gordon","position":3,"cik":"0001296771","reported_name":"Freund John Gordon","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":38757,"kind":"person","name":"KANEKO YASUNORI","position":4,"cik":"0001277503","reported_name":"KANEKO YASUNORI","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2018-10-19T20:48:46.000Z","date":"2018-10-19","kind":"exercise","acquired":true,"shares":398676,"ownership":{"direct":false,"nature":"By Skyline Venture Partners V, L.P."},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The Issuer's Series 4 Preferred Stock, Series 5 Preferred Stock and Series 7 Preferred Stock automatically converted into an equal number of shares of Issuer's common stock immediately upon the closing of the Issuer's initial public offering and has no expiration date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Shares held by Skyline Venture Partners V, L.P. (\"SVP V\"). Skyline Venture Management V, LLC (\"LLC\") is the general partner of SVP V and as such may be deemed to have voting and investment power with respect to the securities of SVP V. John G. Freund, a member of the Issuer's board of directors, together with Yasunori Kaneko, are the managing directors of LLC and each may be deemed to have voting and investment power with respect to the securities held by SVP V.  Dr. Freund and Mr. Kaneko disclaim beneficial ownership of such securities, except to the extent of their pecuniary interest therein."}],"balance_after":4094985,"source":{"system":"sec-edgar","filing":"0001209191-18-055698","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1459839/000120919118055698/doc4.xml","form_type":"4"}},{"id":3786430,"issuer":{"id":2501,"kind":"organization","name":"SI-BONE, Inc.","symbol":"SIBN"},"owners":[{"id":147193,"kind":"organization","name":"Skyline Venture Partners V LP","position":1,"cik":"0001419187","reported_name":"Skyline Venture Partners V LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":147194,"kind":"organization","name":"Skyline Venture Management V, LLC","position":2,"cik":"0001434887","reported_name":"Skyline Venture Management V, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":40449,"kind":"person","name":"Freund John Gordon","position":3,"cik":"0001296771","reported_name":"Freund John Gordon","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":38757,"kind":"person","name":"KANEKO YASUNORI","position":4,"cik":"0001277503","reported_name":"KANEKO YASUNORI","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2018-10-19T20:48:46.000Z","date":"2018-10-19","kind":"exercise","acquired":true,"shares":690689,"ownership":{"direct":false,"nature":"By Skyline Venture Partners V, L.P."},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The Issuer's Series 6 Preferred Stock automatically converted into approximately 1.05878 shares of Issuer's common stock immediately upon the closing of the Issuer's initial public offering and has no expiration date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Shares held by Skyline Venture Partners V, L.P. (\"SVP V\"). Skyline Venture Management V, LLC (\"LLC\") is the general partner of SVP V and as such may be deemed to have voting and investment power with respect to the securities of SVP V. John G. Freund, a member of the Issuer's board of directors, together with Yasunori Kaneko, are the managing directors of LLC and each may be deemed to have voting and investment power with respect to the securities held by SVP V.  Dr. Freund and Mr. Kaneko disclaim beneficial ownership of such securities, except to the extent of their pecuniary interest therein."}],"balance_after":3696309,"source":{"system":"sec-edgar","filing":"0001209191-18-055698","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1459839/000120919118055698/doc4.xml","form_type":"4"}},{"id":3786429,"issuer":{"id":2501,"kind":"organization","name":"SI-BONE, Inc.","symbol":"SIBN"},"owners":[{"id":147193,"kind":"organization","name":"Skyline Venture Partners V LP","position":1,"cik":"0001419187","reported_name":"Skyline Venture Partners V LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":147194,"kind":"organization","name":"Skyline Venture Management V, LLC","position":2,"cik":"0001434887","reported_name":"Skyline Venture Management V, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":40449,"kind":"person","name":"Freund John Gordon","position":3,"cik":"0001296771","reported_name":"Freund John Gordon","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":38757,"kind":"person","name":"KANEKO YASUNORI","position":4,"cik":"0001277503","reported_name":"KANEKO YASUNORI","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2018-10-19T20:48:46.000Z","date":"2018-10-19","kind":"exercise","acquired":true,"shares":792195,"ownership":{"direct":false,"nature":"By Skyline Venture Partners V, L.P."},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The Issuer's Series 4 Preferred Stock, Series 5 Preferred Stock and Series 7 Preferred Stock automatically converted into an equal number of shares of Issuer's common stock immediately upon the closing of the Issuer's initial public offering and has no expiration date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Shares held by Skyline Venture Partners V, L.P. (\"SVP V\"). Skyline Venture Management V, LLC (\"LLC\") is the general partner of SVP V and as such may be deemed to have voting and investment power with respect to the securities of SVP V. John G. Freund, a member of the Issuer's board of directors, together with Yasunori Kaneko, are the managing directors of LLC and each may be deemed to have voting and investment power with respect to the securities held by SVP V.  Dr. Freund and Mr. Kaneko disclaim beneficial ownership of such securities, except to the extent of their pecuniary interest therein."}],"balance_after":3005620,"source":{"system":"sec-edgar","filing":"0001209191-18-055698","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1459839/000120919118055698/doc4.xml","form_type":"4"}},{"id":3786428,"issuer":{"id":2501,"kind":"organization","name":"SI-BONE, Inc.","symbol":"SIBN"},"owners":[{"id":147193,"kind":"organization","name":"Skyline Venture Partners V LP","position":1,"cik":"0001419187","reported_name":"Skyline Venture Partners V LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":147194,"kind":"organization","name":"Skyline Venture Management V, LLC","position":2,"cik":"0001434887","reported_name":"Skyline Venture Management V, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":40449,"kind":"person","name":"Freund John Gordon","position":3,"cik":"0001296771","reported_name":"Freund John Gordon","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":38757,"kind":"person","name":"KANEKO YASUNORI","position":4,"cik":"0001277503","reported_name":"KANEKO YASUNORI","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2018-10-19T20:48:46.000Z","date":"2018-10-19","kind":"exercise","acquired":true,"shares":2213425,"ownership":{"direct":false,"nature":"By Skyline Venture Partners V, L.P."},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The Issuer's Series 4 Preferred Stock, Series 5 Preferred Stock and Series 7 Preferred Stock automatically converted into an equal number of shares of Issuer's common stock immediately upon the closing of the Issuer's initial public offering and has no expiration date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Shares held by Skyline Venture Partners V, L.P. (\"SVP V\"). Skyline Venture Management V, LLC (\"LLC\") is the general partner of SVP V and as such may be deemed to have voting and investment power with respect to the securities of SVP V. John G. Freund, a member of the Issuer's board of directors, together with Yasunori Kaneko, are the managing directors of LLC and each may be deemed to have voting and investment power with respect to the securities held by SVP V.  Dr. Freund and Mr. Kaneko disclaim beneficial ownership of such securities, except to the extent of their pecuniary interest therein."}],"balance_after":2213425,"source":{"system":"sec-edgar","filing":"0001209191-18-055698","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1459839/000120919118055698/doc4.xml","form_type":"4"}},{"id":3798534,"issuer":{"id":5797,"kind":"organization","name":"SUTRO BIOPHARMA, INC.","symbol":"STRO"},"owners":[{"id":147193,"kind":"organization","name":"Skyline Venture Partners V LP","position":1,"cik":"0001419187","reported_name":"Skyline Venture Partners V LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":147194,"kind":"organization","name":"Skyline Venture Management V, LLC","position":2,"cik":"0001434887","reported_name":"Skyline Venture Management V, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":38757,"kind":"person","name":"KANEKO YASUNORI","position":3,"cik":"0001277503","reported_name":"KANEKO YASUNORI","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Series E Preferred Stock","published_at":"2018-10-03T12:36:57.000Z","date":"2018-10-01","kind":"exercise","acquired":false,"shares":18698578,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"By Skyline Venture Partners V, L.P."},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F4","text":"Each share of the issuer's Series E Preferred Stock automatically converted into 0.0275 share of the issuer's Common Stock on October 1, 2018 in connection with the closing of the issuer's sale of its Common Stock in its IPO pursuant to the Registration Statement, and had no expiration date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"Each share of the issuer's Series E Preferred Stock automatically converted into 0.0275 share of the issuer's Common Stock on October 1, 2018 in connection with the closing of the issuer's sale of its Common Stock in its IPO pursuant to the Registration Statement, and had no expiration date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"Each share of the issuer's Series E Preferred Stock automatically converted into 0.0275 share of the issuer's Common Stock on October 1, 2018 in connection with the closing of the issuer's sale of its Common Stock in its IPO pursuant to the Registration Statement, and had no expiration date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"These securities are held of record by Skyline Venture Partners V, L.P. (\"Skyline L.P.\"). Skyline Venture Management V, LLC (\"Skyline Management\") is the general partner of Skyline L.P. John G. Freund and Yasunori Kaneko, are the managing directors of Skyline Management, and each may be deemed to share voting and investment power over the securities held by Skyline L.P. and disclaims beneficial ownership over such securities except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.  Mr. Freund is a director of the Issuer and, accordingly, files separate Section 16 reports."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":514211},"source":{"system":"sec-edgar","filing":"0001104659-18-060241","document":"a4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1434887/000110465918060241/a4.xml","form_type":"4"}},{"id":3798533,"issuer":{"id":5797,"kind":"organization","name":"SUTRO BIOPHARMA, INC.","symbol":"STRO"},"owners":[{"id":147193,"kind":"organization","name":"Skyline Venture Partners V LP","position":1,"cik":"0001419187","reported_name":"Skyline Venture Partners V LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":147194,"kind":"organization","name":"Skyline Venture Management V, LLC","position":2,"cik":"0001434887","reported_name":"Skyline Venture Management V, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":38757,"kind":"person","name":"KANEKO YASUNORI","position":3,"cik":"0001277503","reported_name":"KANEKO YASUNORI","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Series D Preferred Stock","published_at":"2018-10-03T12:36:57.000Z","date":"2018-10-01","kind":"exercise","acquired":false,"shares":12846023,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"By Skyline Venture Partners V, L.P."},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"Each share of the issuer's Series D Preferred Stock automatically converted into 0.0405 share of the issuer's Common Stock on October 1, 2018 in connection with the closing of the issuer's sale of its Common Stock in its IPO pursuant to the Registration Statement, and had no expiration date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"Each share of the issuer's Series D Preferred Stock automatically converted into 0.0405 share of the issuer's Common Stock on October 1, 2018 in connection with the closing of the issuer's sale of its Common Stock in its IPO pursuant to the Registration Statement, and had no expiration date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"Each share of the issuer's Series D Preferred Stock automatically converted into 0.0405 share of the issuer's Common Stock on October 1, 2018 in connection with the closing of the issuer's sale of its Common Stock in its IPO pursuant to the Registration Statement, and had no expiration date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"These securities are held of record by Skyline Venture Partners V, L.P. (\"Skyline L.P.\"). Skyline Venture Management V, LLC (\"Skyline Management\") is the general partner of Skyline L.P. John G. Freund and Yasunori Kaneko, are the managing directors of Skyline Management, and each may be deemed to share voting and investment power over the securities held by Skyline L.P. and disclaims beneficial ownership over such securities except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.  Mr. Freund is a director of the Issuer and, accordingly, files separate Section 16 reports."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":520264},"source":{"system":"sec-edgar","filing":"0001104659-18-060241","document":"a4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1434887/000110465918060241/a4.xml","form_type":"4"}},{"id":3798532,"issuer":{"id":5797,"kind":"organization","name":"SUTRO BIOPHARMA, INC.","symbol":"STRO"},"owners":[{"id":147193,"kind":"organization","name":"Skyline Venture Partners V LP","position":1,"cik":"0001419187","reported_name":"Skyline Venture Partners V LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":147194,"kind":"organization","name":"Skyline Venture Management V, LLC","position":2,"cik":"0001434887","reported_name":"Skyline Venture Management V, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":38757,"kind":"person","name":"KANEKO YASUNORI","position":3,"cik":"0001277503","reported_name":"KANEKO YASUNORI","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Series C Preferred Stock","published_at":"2018-10-03T12:36:57.000Z","date":"2018-10-01","kind":"exercise","acquired":false,"shares":25015635,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"By Skyline Venture Partners V, L.P."},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of the issuer's Series C Preferred Stock automatically converted into 0.0370 share of the issuer's Common Stock on October 1, 2018 in connection with the closing of the issuer's sale of its Common Stock in its firm commitment initial public offering (the \"IPO\") pursuant to a registration statement on Form S-1 (File No. 333-227103) under the Securities Act of 1933, as amended (the \"Registration Statement\"), and had no expiration date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Each share of the issuer's Series C Preferred Stock automatically converted into 0.0370 share of the issuer's Common Stock on October 1, 2018 in connection with the closing of the issuer's sale of its Common Stock in its firm commitment initial public offering (the \"IPO\") pursuant to a registration statement on Form S-1 (File No. 333-227103) under the Securities Act of 1933, as amended (the \"Registration Statement\"), and had no expiration date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Each share of the issuer's Series C Preferred Stock automatically converted into 0.0370 share of the issuer's Common Stock on October 1, 2018 in connection with the closing of the issuer's sale of its Common Stock in its firm commitment initial public offering (the \"IPO\") pursuant to a registration statement on Form S-1 (File No. 333-227103) under the Securities Act of 1933, as amended (the \"Registration Statement\"), and had no expiration date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"These securities are held of record by Skyline Venture Partners V, L.P. (\"Skyline L.P.\"). Skyline Venture Management V, LLC (\"Skyline Management\") is the general partner of Skyline L.P. John G. Freund and Yasunori Kaneko, are the managing directors of Skyline Management, and each may be deemed to share voting and investment power over the securities held by Skyline L.P. and disclaims beneficial ownership over such securities except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.  Mr. Freund is a director of the Issuer and, accordingly, files separate Section 16 reports."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":925578},"source":{"system":"sec-edgar","filing":"0001104659-18-060241","document":"a4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1434887/000110465918060241/a4.xml","form_type":"4"}},{"id":3798531,"issuer":{"id":5797,"kind":"organization","name":"SUTRO BIOPHARMA, INC.","symbol":"STRO"},"owners":[{"id":147193,"kind":"organization","name":"Skyline Venture Partners V LP","position":1,"cik":"0001419187","reported_name":"Skyline Venture Partners V LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":147194,"kind":"organization","name":"Skyline Venture Management V, LLC","position":2,"cik":"0001434887","reported_name":"Skyline Venture Management V, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":38757,"kind":"person","name":"KANEKO YASUNORI","position":3,"cik":"0001277503","reported_name":"KANEKO YASUNORI","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2018-10-03T12:36:57.000Z","date":"2018-10-01","kind":"exercise","acquired":true,"shares":514211,"ownership":{"direct":false,"nature":"By Skyline Venture Partners V, L.P."},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F4","text":"Each share of the issuer's Series E Preferred Stock automatically converted into 0.0275 share of the issuer's Common Stock on October 1, 2018 in connection with the closing of the issuer's sale of its Common Stock in its IPO pursuant to the Registration Statement, and had no expiration date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"These securities are held of record by Skyline Venture Partners V, L.P. (\"Skyline L.P.\"). Skyline Venture Management V, LLC (\"Skyline Management\") is the general partner of Skyline L.P. John G. Freund and Yasunori Kaneko, are the managing directors of Skyline Management, and each may be deemed to share voting and investment power over the securities held by Skyline L.P. and disclaims beneficial ownership over such securities except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.  Mr. Freund is a director of the Issuer and, accordingly, files separate Section 16 reports."}],"balance_after":1960053,"source":{"system":"sec-edgar","filing":"0001104659-18-060241","document":"a4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1434887/000110465918060241/a4.xml","form_type":"4"}},{"id":3798530,"issuer":{"id":5797,"kind":"organization","name":"SUTRO BIOPHARMA, INC.","symbol":"STRO"},"owners":[{"id":147193,"kind":"organization","name":"Skyline Venture Partners V LP","position":1,"cik":"0001419187","reported_name":"Skyline Venture Partners V LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":147194,"kind":"organization","name":"Skyline Venture Management V, LLC","position":2,"cik":"0001434887","reported_name":"Skyline Venture Management V, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":38757,"kind":"person","name":"KANEKO YASUNORI","position":3,"cik":"0001277503","reported_name":"KANEKO YASUNORI","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2018-10-03T12:36:57.000Z","date":"2018-10-01","kind":"exercise","acquired":true,"shares":520264,"ownership":{"direct":false,"nature":"By Skyline Venture Partners V, L.P."},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Each share of the issuer's Series D Preferred Stock automatically converted into 0.0405 share of the issuer's Common Stock on October 1, 2018 in connection with the closing of the issuer's sale of its Common Stock in its IPO pursuant to the Registration Statement, and had no expiration date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"These securities are held of record by Skyline Venture Partners V, L.P. (\"Skyline L.P.\"). Skyline Venture Management V, LLC (\"Skyline Management\") is the general partner of Skyline L.P. John G. Freund and Yasunori Kaneko, are the managing directors of Skyline Management, and each may be deemed to share voting and investment power over the securities held by Skyline L.P. and disclaims beneficial ownership over such securities except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.  Mr. Freund is a director of the Issuer and, accordingly, files separate Section 16 reports."}],"balance_after":1445842,"source":{"system":"sec-edgar","filing":"0001104659-18-060241","document":"a4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1434887/000110465918060241/a4.xml","form_type":"4"}},{"id":3798529,"issuer":{"id":5797,"kind":"organization","name":"SUTRO BIOPHARMA, INC.","symbol":"STRO"},"owners":[{"id":147193,"kind":"organization","name":"Skyline Venture Partners V LP","position":1,"cik":"0001419187","reported_name":"Skyline Venture Partners V LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":147194,"kind":"organization","name":"Skyline Venture Management V, LLC","position":2,"cik":"0001434887","reported_name":"Skyline Venture Management V, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":38757,"kind":"person","name":"KANEKO YASUNORI","position":3,"cik":"0001277503","reported_name":"KANEKO YASUNORI","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2018-10-03T12:36:57.000Z","date":"2018-10-01","kind":"exercise","acquired":true,"shares":925578,"ownership":{"direct":false,"nature":"By Skyline Venture Partners V, L.P."},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Each share of the issuer's Series C Preferred Stock automatically converted into 0.0370 share of the issuer's Common Stock on October 1, 2018 in connection with the closing of the issuer's sale of its Common Stock in its firm commitment initial public offering (the \"IPO\") pursuant to a registration statement on Form S-1 (File No. 333-227103) under the Securities Act of 1933, as amended (the \"Registration Statement\"), and had no expiration date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"These securities are held of record by Skyline Venture Partners V, L.P. (\"Skyline L.P.\"). Skyline Venture Management V, LLC (\"Skyline Management\") is the general partner of Skyline L.P. John G. Freund and Yasunori Kaneko, are the managing directors of Skyline Management, and each may be deemed to share voting and investment power over the securities held by Skyline L.P. and disclaims beneficial ownership over such securities except to the extent of their pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.  Mr. Freund is a director of the Issuer and, accordingly, files separate Section 16 reports."}],"balance_after":925578,"source":{"system":"sec-edgar","filing":"0001104659-18-060241","document":"a4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1434887/000110465918060241/a4.xml","form_type":"4"}},{"id":3989909,"issuer":{"id":4104,"kind":"organization","name":"Arcus Biosciences, Inc."},"owners":[{"id":38757,"kind":"person","name":"KANEKO YASUNORI","position":1,"cik":"0001277503","reported_name":"KANEKO YASUNORI","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Series C Convertible Preferred Stock","published_at":"2018-03-19T21:26:11.000Z","date":"2018-03-19","kind":"exercise","acquired":false,"shares":2565,"ownership":{"direct":false,"nature":"By Trust"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"The reported security converted into the Issuer's Common Stock on a 1-for-1 basis automatically immediately prior to the closing of the Issuer's initial public offering without payment of further consideration. The shares have no expiration date.Q"},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The reported security converted into the Issuer's Common Stock on a 1-for-1 basis automatically immediately prior to the closing of the Issuer's initial public offering without payment of further consideration. The shares have no expiration date.Q"},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The reported security converted into the Issuer's Common Stock on a 1-for-1 basis automatically immediately prior to the closing of the Issuer's initial public offering without payment of further consideration. The shares have no expiration date.Q"},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The reported security converted into the Issuer's Common Stock on a 1-for-1 basis automatically immediately prior to the closing of the Issuer's initial public offering without payment of further consideration. The shares have no expiration date.Q"}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":2565},"source":{"system":"sec-edgar","filing":"0000899243-18-007986","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1724521/000089924318007986/doc4.xml","form_type":"4"}},{"id":3989908,"issuer":{"id":4104,"kind":"organization","name":"Arcus Biosciences, Inc."},"owners":[{"id":38757,"kind":"person","name":"KANEKO YASUNORI","position":1,"cik":"0001277503","reported_name":"KANEKO YASUNORI","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Series B Convertible Preferred Stock","published_at":"2018-03-19T21:26:11.000Z","date":"2018-03-19","kind":"exercise","acquired":false,"shares":31253,"ownership":{"direct":false,"nature":"By Trust"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"The reported security converted into the Issuer's Common Stock on a 1-for-1 basis automatically immediately prior to the closing of the Issuer's initial public offering without payment of further consideration. The shares have no expiration date.Q"},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The reported security converted into the Issuer's Common Stock on a 1-for-1 basis automatically immediately prior to the closing of the Issuer's initial public offering without payment of further consideration. The shares have no expiration date.Q"},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The reported security converted into the Issuer's Common Stock on a 1-for-1 basis automatically immediately prior to the closing of the Issuer's initial public offering without payment of further consideration. The shares have no expiration date.Q"},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The reported security converted into the Issuer's Common Stock on a 1-for-1 basis automatically immediately prior to the closing of the Issuer's initial public offering without payment of further consideration. The shares have no expiration date.Q"}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":31253},"source":{"system":"sec-edgar","filing":"0000899243-18-007986","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1724521/000089924318007986/doc4.xml","form_type":"4"}},{"id":3989907,"issuer":{"id":4104,"kind":"organization","name":"Arcus Biosciences, Inc."},"owners":[{"id":38757,"kind":"person","name":"KANEKO YASUNORI","position":1,"cik":"0001277503","reported_name":"KANEKO YASUNORI","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Series B Convertible Preferred Stock","published_at":"2018-03-19T21:26:11.000Z","date":"2018-03-19","kind":"exercise","acquired":false,"shares":252524,"ownership":{"direct":false,"nature":"By Kaneko Investments, LLC"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"The reported security converted into the Issuer's Common Stock on a 1-for-1 basis automatically immediately prior to the closing of the Issuer's initial public offering without payment of further consideration. The shares have no expiration date.Q"},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The reported security converted into the Issuer's Common Stock on a 1-for-1 basis automatically immediately prior to the closing of the Issuer's initial public offering without payment of further consideration. The shares have no expiration date.Q"},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The reported security converted into the Issuer's Common Stock on a 1-for-1 basis automatically immediately prior to the closing of the Issuer's initial public offering without payment of further consideration. The shares have no expiration date.Q"},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The reported security converted into the Issuer's Common Stock on a 1-for-1 basis automatically immediately prior to the closing of the Issuer's initial public offering without payment of further consideration. The shares have no expiration date.Q"}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":252524},"source":{"system":"sec-edgar","filing":"0000899243-18-007986","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1724521/000089924318007986/doc4.xml","form_type":"4"}},{"id":3989906,"issuer":{"id":4104,"kind":"organization","name":"Arcus Biosciences, Inc."},"owners":[{"id":38757,"kind":"person","name":"KANEKO YASUNORI","position":1,"cik":"0001277503","reported_name":"KANEKO YASUNORI","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Series A Convertible Preferred Stock","published_at":"2018-03-19T21:26:11.000Z","date":"2018-03-19","kind":"exercise","acquired":false,"shares":505050,"ownership":{"direct":false,"nature":"By Kaneko Capital, LLC"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"The reported security converted into the Issuer's Common Stock on a 1-for-1 basis automatically immediately prior to the closing of the Issuer's initial public offering without payment of further consideration. The shares have no expiration date.Q"},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The reported security converted into the Issuer's Common Stock on a 1-for-1 basis automatically immediately prior to the closing of the Issuer's initial public offering without payment of further consideration. The shares have no expiration date.Q"},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The reported security converted into the Issuer's Common Stock on a 1-for-1 basis automatically immediately prior to the closing of the Issuer's initial public offering without payment of further consideration. The shares have no expiration date.Q"},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"The reported security converted into the Issuer's Common Stock on a 1-for-1 basis automatically immediately prior to the closing of the Issuer's initial public offering without payment of further consideration. The shares have no expiration date.Q"}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":505050},"source":{"system":"sec-edgar","filing":"0000899243-18-007986","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1724521/000089924318007986/doc4.xml","form_type":"4"}},{"id":3989905,"issuer":{"id":4104,"kind":"organization","name":"Arcus Biosciences, Inc."},"owners":[{"id":38757,"kind":"person","name":"KANEKO YASUNORI","position":1,"cik":"0001277503","reported_name":"KANEKO YASUNORI","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2018-03-19T21:26:11.000Z","date":"2018-03-19","kind":"exercise","acquired":true,"shares":33818,"ownership":{"direct":false,"nature":"By Trust"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The total represents shares received upon conversion of shares of Series A Convertible Preferred Stock, Series B Convertible Preferred Stock and Series C Convertible Preferred Stock."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The reported security converted into the Issuer's Common Stock on a 1-for-1 basis automatically immediately prior to the closing of the Issuer's initial public offering without payment of further consideration. The shares have no expiration date.Q"}],"balance_after":96948,"source":{"system":"sec-edgar","filing":"0000899243-18-007986","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1724521/000089924318007986/doc4.xml","form_type":"4"}},{"id":3989904,"issuer":{"id":4104,"kind":"organization","name":"Arcus Biosciences, Inc."},"owners":[{"id":38757,"kind":"person","name":"KANEKO YASUNORI","position":1,"cik":"0001277503","reported_name":"KANEKO YASUNORI","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2018-03-19T21:26:11.000Z","date":"2018-03-19","kind":"exercise","acquired":true,"shares":252524,"ownership":{"direct":false,"nature":"By Kaneko Investments, LLC"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The total represents shares received upon conversion of shares of Series A Convertible Preferred Stock, Series B Convertible Preferred Stock and Series C Convertible Preferred Stock."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The reported security converted into the Issuer's Common Stock on a 1-for-1 basis automatically immediately prior to the closing of the Issuer's initial public offering without payment of further consideration. The shares have no expiration date.Q"}],"balance_after":252524,"source":{"system":"sec-edgar","filing":"0000899243-18-007986","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1724521/000089924318007986/doc4.xml","form_type":"4"}},{"id":3989903,"issuer":{"id":4104,"kind":"organization","name":"Arcus Biosciences, Inc."},"owners":[{"id":38757,"kind":"person","name":"KANEKO YASUNORI","position":1,"cik":"0001277503","reported_name":"KANEKO YASUNORI","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2018-03-19T21:26:11.000Z","date":"2018-03-19","kind":"exercise","acquired":true,"shares":505050,"ownership":{"direct":false,"nature":"By Kaneko Capital, LLC"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The total represents shares received upon conversion of shares of Series A Convertible Preferred Stock, Series B Convertible Preferred Stock and Series C Convertible Preferred Stock."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The reported security converted into the Issuer's Common Stock on a 1-for-1 basis automatically immediately prior to the closing of the Issuer's initial public offering without payment of further consideration. The shares have no expiration date.Q"}],"balance_after":505050,"source":{"system":"sec-edgar","filing":"0000899243-18-007986","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1724521/000089924318007986/doc4.xml","form_type":"4"}},{"id":4139086,"issuer":{"id":5169,"kind":"organization","name":"COLLEGIUM PHARMACEUTICAL, INC"},"owners":[{"id":38757,"kind":"person","name":"KANEKO YASUNORI","position":1,"cik":"0001277503","reported_name":"KANEKO YASUNORI","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2017-12-08T00:05:08.000Z","date":"2017-12-05","kind":"other","acquired":true,"shares":270,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"By the Kaneko Family Trust"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F3","text":"Represents a pro rata in-kind distribution of the shares by Skyline Venture Partners V, L.P. without consideration to the reporting person."}],"balance_after":270,"source":{"system":"sec-edgar","filing":"0001192482-17-000304","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1267565/000119248217000304/edgar.xml","form_type":"4"}},{"id":4139085,"issuer":{"id":5169,"kind":"organization","name":"COLLEGIUM PHARMACEUTICAL, INC"},"owners":[{"id":38757,"kind":"person","name":"KANEKO YASUNORI","position":1,"cik":"0001277503","reported_name":"KANEKO YASUNORI","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2017-12-08T00:05:08.000Z","date":"2017-12-05","kind":"other","acquired":false,"shares":800000,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"By Skyline Venture Partners V, L.P."},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents a pro rata in-kind distribution of the shares by Skyline Venture Partners V, L.P. without consideration to its limited and general partners."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"The shares are held by Skyline Venture Partners V, L.P. The general partner of Skyline Venture Partners V, L.P. is Skyline Venture Management V, LLC. John G. Freund and Yasunori Kaneko are managers of Skyline Venture Management V, LLC. These individuals share voting and investment power over the shares held by Skyline Venture Management, LLC. Dr. Kaneko disclaims beneficial ownership of all the shares held by Skyline Venture Partners V, L.P. except to the extent of his proportionate pecuniary interest therein."}],"balance_after":2149916,"source":{"system":"sec-edgar","filing":"0001192482-17-000304","document":"edgar.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1267565/000119248217000304/edgar.xml","form_type":"4"}}]}