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

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—

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—