CIK 0001382101 · Non-accelerated filer<br>Smaller reporting company
SUTRO BIOPHARMA, INC.
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- STRO
- Exchange
- Nasdaq
- Industry
- Biological Products, (No Diagnostic Substances)
- FY end
- Dec 31
- Entity type
- operating
- EIN
- 452441988
- Phone
- 650-392-8412
- Business address
- 111 OYSTER POINT BLVD., SOUTH SAN FRANCISCO, CA, 94080
- Former names
- SUTRO BIOPHARMA INC, Fundamental Applied Biology Inc
- Open-market buys, last 90 days
- $0
- in 0 filings
- Open-market sales, last 90 days
- $0
- in 0 filings
Shares bought or sold at a price by officers, directors and 10% owners (Form 4 codes P and S). Grants, option exercises and tax withholding aren't counted.
Reading 100 more Form 4s from the SEC; this list fills in as they're read.
| Date | Insider | Transaction | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|
| 2025-12-12 | Chung Jane Chief Executive Officer | Option exercise | +2,500 | 14,785 | ||
| 2025-12-12 | Chung Jane Chief Executive Officer | Shares withheld for taxes | −894 | $8.02 | $7K | 13,891 |
| 2025-12-12 | Chung Jane Chief Executive Officer | Option exercise · Restricted Stock Unit (RSU) | −2,500 | 5,000 | ||
| 2025-10-15 | Pauling David Chief Admin. Ofcr. & GC | Purchase | +12,504 | $0.80 | $10K | 71,737 |
| 2025-10-15 | Gerber Hans-Peter CHIEF SCIENTIFIC OFFICER | Purchase | +17,000 | $0.80 | $14K | 71,832 |
| 2025-10-15 | Chung Jane Chief Executive Officer | Purchase | +12,500 | $0.80 | $10K | 122,850 |
| 2025-10-15 | Chow Gregory K. CFO | Purchase | +19,750 | $0.81 | $16K | 19,750 |
| 2025-10-15 | MATSUI CONNIE Director | Purchase | +50,000 | $0.80 | $40K | 50,000 |
| 2025-09-18 | Gerber Hans-Peter CHIEF SCIENTIFIC OFFICER | Option exercise | +37,500 | 68,249 | ||
| 2025-09-18 | Gerber Hans-Peter CHIEF SCIENTIFIC OFFICER | Shares withheld for taxes | −13,417 | $0.90 | $12K | 54,832 |
| 2025-09-18 | Gerber Hans-Peter CHIEF SCIENTIFIC OFFICER | Option exercise · Restricted Stock Units (RSUs) | −37,500 | 75,000 | ||
| 2025-08-09 | Chung Jane Chief Executive Officer | Option exercise | +18,750 | 117,058 | ||
| 2025-08-09 | Chung Jane Chief Executive Officer | Shares withheld for taxes | −6,708 | $0.80 | $5K | 110,350 |
| 2025-08-09 | Chung Jane Chief Executive Officer | Option exercise · Restricted Stock Unit (RSU) | −18,750 | 0 | ||
| 2025-07-08 | Leyman Barbara Chief Business Officer | Option exercise | +25,000 | 25,000 | ||
| 2025-07-08 | Leyman Barbara Chief Business Officer | Shares withheld for taxes | −8,944 | $0.78 | $7K | 16,056 |
| 2025-07-08 | Leyman Barbara Chief Business Officer | Option exercise · Restricted Stock Units (RSUs) | −25,000 | 75,000 | ||
| 2025-06-06 | Wigginton Jon Marc Director | Grant or award · Stock Option (right to buy) | +50,000 | 50,000 | ||
| 2025-06-06 | Petree Daniel H Director | Grant or award · Stock Option (right to buy) | +50,000 | 50,000 | ||
| 2025-06-06 | PANEK JAMES P Director | Grant or award · Stock Option (right to buy) | +50,000 | 50,000 |
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