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SUTRO BIOPHARMA, INC.
Biological Products, (No Diagnostic Substances) · CIK 1382101
Developing site-specific antibody drug conjugates for oncology using proprietary cell-free protein synthesis platforms
$477M
Market cap
$33.35
Last close
+9.3%
1D
+5.7%
5D
465K
Volume
Price · last 39 sessions-13.1%
May 4L $24.43 · H $40.91Jun 29
167
Total filings
Jun 8, 2026
Last filing
12/31
Fiscal year end
SC 13GSC 13GApr 5, 2024SC 13GSC 13GJan 17, 2024SC 13GSUTRO BIOPHARMA, INC.Oct 10, 2023SC 13GSC 13GFeb 10, 2023SC 13GSC 13GJul 8, 2022SC 13GTHE SCHEDULE 13GJan 18, 2022SC 13GSC 13GDec 10, 2021SC 13GSC 13GFeb 2, 2021SC 13GSC 13GAug 28, 2020SC 13GSC 13GAug 25, 2020SC 13GTHE SCHEDULE 13GMay 22, 2020SC 13GSC 13GFeb 12, 2020SC 13GSC 13GFeb 10, 2020SC 13GSC 13GFeb 14, 2019SC 13GSC 13GFeb 13, 2019SC 13GSC 13GFeb 12, 2019SC 13GSC 13GOct 4, 2018
Insider Activity
◆ Cluster Buy · 5 insidersIn the 90 days to Oct 15, 2025: 5 insiders bought $90K.
| Date | Insider | Action | Shares | Price | Value |
|---|---|---|---|---|---|
| Oct 15, 2025 | Matsui ConnieDirector | Buy | 50,000 | $0.80 | $40K |
| Oct 15, 2025 | Chow Gregory K.CFO | Buy | 19,750 | $0.81 | $16K |
| Oct 15, 2025 | Gerber Hans-PeterCHIEF SCIENTIFIC OFFICER | Buy | 17,000 | $0.80 | $14K |
| Oct 15, 2025 | Pauling DavidChief Admin. Ofcr. & GC | Buy | 12,504 | $0.80 | $10K |
| Oct 15, 2025 | Chung JaneChief Executive Officer | Buy | 12,500 | $0.80 | $10K |
Open-market buys & sells (Form 4, transaction codes P/S). Source: SEC structured insider data.
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