Form4insider filings, from the source

Company · CIK 0001382101 · SIC 2836 — Biological Products, (No Diagnostic Substances) · Nasdaq

SUTRO BIOPHARMA, INC. · STRO

Insider activity reported against this company. All insider holders · On EDGAR ↗

1M3M6M1Y2YAll datashares as filed — not split-adjusted
Open-market buys & salesbuys $10.0M · 1sales $1,830 · 1net $10.0M
$10k$10k$100k$100k$1M$1M$10M$10MbuyssalesSep 30Sep 30Sep 30Oct 1Oct 1Oct 1Oct 2

Reported at this company — common stock

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Sep 18, 2026 FMForm 4 →Sep 22, 4:09 pm EDTHans-Peter GerberCHIEF SCIENTIFIC OFFICER5,095$15.34$20,63212,367—
Feb 12, 2019 MForm 4 →Feb 14, 4:52 pm ESTDaniel H PetreeDirector3,030$5.09$15,4233,030— plan?
Oct 1, 2018 CForm 4 →Oct 3, 12:36 pm EDTSkyline Venture Partners V LP +210% Owner1,960,053——1,960,053— plan?
Oct 1, 2018 CForm 4 →Oct 2, 4:10 pm EDTCELGENE CORP10% Owner1,726,197——1,726,197— plan?
Oct 1, 2018 PForm 4 →Oct 2, 2:31 pm EDTMerck & Co., Inc. +110% Owner666,666$15.00$9,999,9902,723,509+32.4% plan?
Oct 1, 2018 CForm 4 →Oct 2, 2:31 pm EDTMerck & Co., Inc. +110% Owner2,056,843——2,056,843— plan?
Oct 1, 2018 CForm 4 →Oct 1, 5:28 pm EDTSVLSF V, LLC +810% Owner1,824,542——18,248— plan?
Oct 1, 2018 CForm 4 →Oct 1, 5:26 pm EDTMichael Jay RossDirector, 10% Owner1,824,542——18,248— plan?
Oct 1, 2018 SForm 4 →Oct 1, 5:22 pm EDTDaniel H PetreeDirector122$15.00$1,830192−38.9% plan?
Oct 1, 2018 MForm 4 →Oct 1, 5:22 pm EDTDaniel H PetreeDirector314$5.81$1,824314— plan?
Oct 1, 2018 CForm 4 →Oct 1, 5:20 pm EDTWilliam J NewellCEO & President, Director12,736——21,154— plan?
Oct 1, 2018 CForm 4 →Oct 1, 5:18 pm EDTDaniel JanneyDirector, 10% Owner1,944,901——1,944,901— plan?
Oct 1, 2018 CForm 4 →Oct 1, 5:16 pm EDTTrevor HallamChief Science Officer2,026——15,800— plan?
Oct 1, 2018 CForm 4 →Oct 1, 5:15 pm EDTJohn Gordon FreundDirector, 10% Owner1,960,053——1,960,053— plan?
Oct 1, 2018 CForm 4 →Oct 1, 5:13 pm EDTLinda A FitzpatrickChief People & Comm. Officer10,383——10,383— plan?
Oct 1, 2018 CForm 4 →Oct 1, 5:12 pm EDTAlta Partners VIII, L.P. +410% Owner1,944,901——1,944,901— plan?
Oct 1, 2018 CForm 4 →Oct 1, 5:08 pm EDTEdward C AlbiniCFO and Secretary1,688——1,688— plan?

Reported at this company — derivatives (options, RSUs, warrants)

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Sep 18, 2026 MForm 4 →Sep 22, 4:09 pm EDTHans-Peter GerberCHIEF SCIENTIFIC OFFICER3,750——3,750—
Jun 5, 2026 AForm 4 →Jun 9, 4:24 pm EDTJon Marc WiggintonDirector10,000——10,000—
Jun 5, 2026 AForm 4 →Jun 9, 4:23 pm EDTDaniel H PetreeDirector10,000——10,000—
Jun 5, 2026 AForm 4 →Jun 9, 4:21 pm EDTJames P PanekDirector10,000——10,000—
Jun 5, 2026 AForm 4 →Jun 9, 4:19 pm EDTJoseph M LobackiDirector10,000——10,000—
Jun 5, 2026 AForm 4 →Jun 9, 4:18 pm EDTSukhi JagpalDirector10,000——10,000—
Jun 5, 2026 AForm 4 →Jun 9, 4:16 pm EDTHeidi HunterDirector10,000——10,000—
Jun 5, 2026 AForm 4 →Jun 9, 4:14 pm EDTMichael DybbsDirector10,000——10,000—
Jun 5, 2026 AForm 4 →Jun 9, 4:12 pm EDTConnie MatsuiDirector10,000——10,000—
Feb 12, 2019 MForm 4 →Feb 14, 4:52 pm ESTDaniel H PetreeDirector3,030——0—
Jan 29, 2019 AForm 4 →Jan 31, 5:11 pm ESTStephen WorsleyChief Business Officer30,000——30,000—
Jan 29, 2019 AForm 4 →Jan 31, 5:11 pm ESTWilliam J NewellCEO, Director445,000——445,000—
Jan 29, 2019 AForm 4 →Jan 31, 5:09 pm ESTArturo Molina M.D.Chief Medical Officer47,500——47,500—
Jan 29, 2019 AForm 4 →Jan 31, 5:08 pm ESTTrevor HallamChief Science Officer47,500——47,500—
Jan 29, 2019 AForm 4 →Jan 31, 5:08 pm ESTLinda A FitzpatrickChief People & Comm. Officer30,000——30,000—
Jan 29, 2019 AForm 4 →Jan 31, 5:07 pm ESTAnik ShabbirChief Technical Ops. Officer35,000——35,000—
Jan 29, 2019 AForm 4 →Jan 31, 5:07 pm ESTEdward C AlbiniCFO and Secretary47,500——47,500—
Nov 8, 2018 AForm 4 →Nov 13, 5:23 pm ESTShalini SharpDirector26,033——26,033— late
Oct 1, 2018 CForm 4 →Oct 3, 12:36 pm EDTSkyline Venture Partners V LP +210% Owner56,560,236——0—
Oct 1, 2018 CForm 4 →Oct 2, 4:10 pm EDTCELGENE CORP10% Owner48,007,412——0—
Oct 1, 2018 CForm 4 →Oct 2, 2:31 pm EDTMerck & Co., Inc. +110% Owner74,794,315——0—
Oct 1, 2018 MForm 4 →Oct 1, 5:22 pm EDTDaniel H PetreeDirector314——0—
Oct 1, 2018 CForm 4 →Oct 1, 5:20 pm EDTWilliam J NewellCEO & President, Director297,924——0—
Oct 1, 2018 CForm 4 →Oct 1, 5:18 pm EDTDaniel JanneyDirector, 10% Owner50,736,989——0—
Oct 1, 2018 CForm 4 →Oct 1, 5:16 pm EDTTrevor HallamChief Science Officer50,033——0—
Oct 1, 2018 CForm 4 →Oct 1, 5:15 pm EDTJohn Gordon FreundDirector, 10% Owner56,560,236——0—
Oct 1, 2018 CForm 4 →Oct 1, 5:13 pm EDTLinda A FitzpatrickChief People & Comm. Officer228,243——0—
Oct 1, 2018 CForm 4 →Oct 1, 5:12 pm EDTAlta Partners VIII, L.P. +410% Owner50,736,989——0—
Oct 1, 2018 CForm 4 →Oct 1, 5:08 pm EDTEdward C AlbiniCFO and Secretary41,694——0—
Sep 27, 2018 CMForm 4 →Oct 1, 5:28 pm EDTSVLSF V, LLC +810% Owner45,440,098——0—
Sep 27, 2018 CMForm 4 →Oct 1, 5:26 pm EDTMichael Jay RossDirector, 10% Owner45,440,098——0—
Sep 26, 2018 AForm 4 →Sep 27, 6:07 pm EDTStephen WorsleyChief Business Officer203,056——203,056—
Sep 26, 2018 AForm 4 →Sep 27, 6:06 pm EDTMichael Jay RossDirector, 10% Owner26,033——26,033—
Sep 26, 2018 AForm 4 →Sep 27, 6:04 pm EDTDaniel H PetreeDirector26,033——26,033—
Sep 26, 2018 AForm 4 →Sep 27, 6:03 pm EDTWilliam J NewellCEO & President, Director530,302——75,757—
Sep 26, 2018 AForm 4 →Sep 27, 6:03 pm EDTArturo Molina M.D.Chief Medical Officer180,784——25,826—
Sep 26, 2018 AForm 4 →Sep 27, 6:01 pm EDTJoseph M LobackiDirector26,033——26,033—
Sep 26, 2018 AForm 4 →Sep 27, 6:00 pm EDTV Bryan LawlisDirector26,033——26,033—
Sep 26, 2018 AForm 4 →Sep 27, 5:56 pm EDTDaniel JanneyDirector, 10% Owner26,033——26,033—
Sep 26, 2018 AForm 4 →Sep 27, 5:55 pm EDTTrevor HallamChief Science Officer245,178——13,774—
Sep 26, 2018 AForm 4 →Sep 27, 5:52 pm EDTJohn Gordon FreundDirector, 10% Owner26,033——26,033—
Sep 26, 2018 AForm 4 →Sep 27, 5:51 pm EDTLinda A FitzpatrickChief People & Comm. Officer159,090——22,727—
Sep 26, 2018 AForm 4 →Sep 27, 5:50 pm EDTMichael DybbsDirector26,033——26,033—
Sep 26, 2018 AForm 4 →Sep 27, 5:49 pm EDTAnik ShabbirChief Technical Ops. Officer180,784——25,826—
Sep 26, 2018 AForm 4 →Sep 27, 5:48 pm EDTEdward C AlbiniCFO and Secretary150,654——21,522—