SUTRO BIOPHARMA, INC.
STRO- Exchange
- Nasdaq
- Industry
- Biological Products, (No Diagnostic Substances)
- SEC CIK
- 0001382101
Insider trades, last 90 days
None
- No open-market purchases or sales were filed in the last 90 days.
13F holders, Q2 2026
100
- +22 vs. Q1 2026
- Total value $545.67M
Superinvestors holding STRO
0
- None of the superinvestors held STRO at the end of Q2 2026.
Price chart
Latest insider trades
View all: Latest insider tradesOpen-market purchases and sales by STRO insiders, newest first.
| Filed (ET) | Trade date | Insider | Transaction | Shares | Avg price | Value | Shares after | Holding change | Filing |
|---|---|---|---|---|---|---|---|---|---|
| Oct 16, 2025 | Oct 15, 2025 | Pauling DavidChief Admin. Ofcr. & GC | PPurchaseCommon Stock | +12.5K | $0.80 | +$10K | 71.74K | +21.1% | SEC |
| Oct 16, 2025 | Oct 15, 2025 | Gerber Hans-PeterCHIEF SCIENTIFIC OFFICER | PPurchaseCommon Stock | +17K | $0.80 | +$13.6K | 71.83K | +31.0% | SEC |
| Oct 16, 2025 | Oct 15, 2025 | Chung JaneChief Executive Officer | PPurchaseCommon Stock | +12.5K | $0.80 | +$10K | 122.85K | +11.3% | SEC |
| Oct 16, 2025 | Oct 15, 2025 | Chow Gregory K.CFO | PPurchaseCommon Stock | +19.75K | $0.81 | +$16K | 19.75K | New position | SEC |
| Oct 16, 2025 | Oct 15, 2025 | MATSUI CONNIEDirector | PPurchaseCommon Stock | +50K | $0.80 | +$40K | 50K | New position | SEC |
Top 5 13F holders, Q2 2026
View all: Top 5 13F holders, Q2 2026The largest institutional positions in STRO at the end of Q2 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| PERCEPTIVE ADVISORS LLC | 1,304,846 | $43.32M | 0.67% | +589,539+82.4% | Added |
| BVF INC/IL | 1,251,788 | $41.56M | 1.06% | 00.0% | Unchanged |
| Affinity Asset Advisors, LLC | 1,172,487 | $38.93M | 1.90% | +102,968+9.6% | Added |
| BlackRock, Inc. | 1,122,655 | $37.27M | 0.00% | +889,971+382.5% | Added |
| Samsara BioCapital, LLC | 1,062,872 | $35.29M | 2.90% | 00.0% | Unchanged |