Sutro Biopharma, Inc.
STRO- Exchange
- Nasdaq
- Industry
- Biological Products, (No Diagnostic Substances)
- SEC CIK
- 0001382101
No open-market purchases or sales by Sutro Biopharma, Inc. insiders were filed in the last 90 days; 100 institutions reported holding it in 13F filings for Q2 2026, worth $545.7M in total; no superinvestor holds it.
Open-market trades, last 90 days
Open-market purchases (P) and sales (S) by Sutro Biopharma, Inc. insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.
- Open-market buys
- 0 filings
- Open-market sells
- 0 filings
- Insiders trading
- 0
- Net value
- $0
- Purchases minus sales
Insider roster
Directors, officers and 10% owners who have filed a Form 4 for Sutro Biopharma, Inc., current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.
| Name | Title | Last reported holding | Last filing | Filings, past year |
|---|---|---|---|---|
| Gerber Hans-Peter | CHIEF SCIENTIFIC OFFICER | 12,367 | Sep 22, 2026 | 4 |
| Panek James P | Director | – | Jun 9, 2026 | 2 |
| Matsui Connie | Director | 50,000 | Jun 9, 2026 | 3 |
| Petree Daniel H | Director | 18,601Indirect | Jun 9, 2026 | 2 |
| Lobacki Joseph M | Director | – | Jun 9, 2026 | 2 |
| Jagpal Sukhi | Director | – | Jun 9, 2026 | 2 |
| Wigginton Jon Marc | Director | – | Jun 9, 2026 | 2 |
| Dybbs Michael | Director | – | Jun 9, 2026 | 2 |
| Hunter Heidi | Director | – | Jun 9, 2026 | 2 |
| Chow Gregory K. | CFO | 4,725 | Jun 2, 2026 | 4 |
| Chung Jane | Chief Executive Officer | 21,285 | Mar 6, 2026 | 4 |
| Pauling David | Chief Admin. Ofcr. & GC | 9,748 | Mar 6, 2026 | 4 |
| Leyman Barbara | Chief Business Officer | 16,056 | Aug 26, 2025 | 0 |
| Albini Edward C | CFO AND SECRETARY | 160,805 | May 19, 2025 | 0 |
| Fitzpatrick Linda A | CHIEF PEOPLE & COMM. OFFICER | 119,744 | May 5, 2025 | 0 |
| Borgman Anne Elizabeth | CHIEF MEDICAL OFFICER | 97,452 | May 5, 2025 | 0 |
| Srinivasan Venkatesh | CHIEF TECH OP OFFICER | 53,686 | May 5, 2025 | 0 |
| Newell William J | CEO | 292,531 | Mar 7, 2025 | 0 |
| Freund John Gordon | Director | – | Jun 10, 2024 | 0 |
| Vasquez Nicki | CHIEF PORT. STRAT & ALNCE OFCR | 14,279 | Jan 31, 2024 | 0 |
| Shtylla Brunilda | Chief Business Officer | 0 | Aug 29, 2023 | 0 |
| Hallam Trevor | Pres. Rsrch & Cf. Sctific Ofcr | 100,368 | Apr 17, 2023 | 0 |
| Shabbir Anik | Chief Technical Ops. Officer | 40,827 | Mar 7, 2023 | 0 |
| Sharp Shalini | Director | – | Jun 8, 2022 | 0 |
| Molina Arturo MD | Chief Medical Officer | 37,736 | Mar 7, 2022 | 0 |
Insider trades
Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Oct 16, 2025 (view filing) | Oct 15 | 1 day | Pauling DavidChief Admin. Ofcr. & GC | PPurchase | +12.5K | $0.80 | +$10.0K | +21.1%71.7K after | |
| Oct 16, 2025 (view filing) | Oct 15 | 1 day | Gerber Hans-PeterCHIEF SCIENTIFIC OFFICER | PPurchase | +17.0K | $0.80 | +$13.6K | +31.0%71.8K after | |
| Oct 16, 2025 (view filing) | Oct 15 | 1 day | Chung JaneChief Executive Officer | PPurchase | +12.5K | $0.80 | +$10.0K | +11.3%122.8K after | |
| Oct 16, 2025 (view filing) | Oct 15 | 1 day | Chow Gregory K.CFO | PPurchase | +19.8K | $0.81 | +$16.0K | New position19.8K after | |
| Oct 16, 2025 (view filing) | Oct 15 | 1 day | Matsui ConnieDirector | PPurchase | +50.0K | $0.80 | +$40.0K | New position50.0K after | |
| Jan 31, 2024 (view filing) | Jan 29 | 2 days | Vasquez NickiCHIEF PORT. STRAT & ALNCE OFCR | SSale | −12.2K | $5.00 | −$60.9K | −48.8%12.8K after | 10b5-1 |
| Aug 29, 2023 (view filing) | Aug 28 | 1 day | Shtylla BrunildaChief Business Officer | SSale | −15.4K | $4.71 | −$72.7K | −100.0%0 after | |
| Aug 28, 2023 (view filing) | Aug 25 | 3 days | Shtylla BrunildaChief Business Officer | SSale | −11.6K | $4.59 | −$53.3K | −47.3%12.9K after | |
| Mar 15, 2022 (view filing) | Mar 14 | 1 day | Newell William JCEO | PPurchase | +10.0K | $7.75 | +$77.5K | +9.4%116.5K after | |
| Sep 28, 2021 (view filing) | Sep 28 | Same day | Vasquez NickiChief Port. Strat & Alnce Ofcr | SSale | −3.91K | $18.62 | −$72.7K | −34.9%7.27K after |