Sutro Biopharma Inc. Com SHSSTRO
13F holders, Q4 2025 (December 31)7holders −81
1new positions
33sold out
$11.57avg. 13F price*
At the end of Q4 2025, 7 institutions reported holding Sutro Biopharma Inc. Com SHS (STRO) in their 13F filings, down 81 from Q3 2025. 1 opened new positions and 33 sold out. The largest holders were Merck & Co., Inc. ($3.2M), AJU IB Investment Co., Ltd. ($202K) and Fortitude Family Office, LLC ($648).
- Company
- Sutro Biopharma Inc. Com SHS
- CUSIP
- 869367102
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q3 2025 → Q4 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 1 | $648 |
| Exits | 33 | $7.4M |
All 13F filers, Q3 2025 → Q4 2025: 57 shares bought and 847,179 shares sold, net −847,122 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 7 holders
| Merck & Co., Inc. | 1.14% | No change | 272,351 | $3.2M |
| AJU IB Investment Co., Ltd. | 0.89% | No change | 17,500 | $202K |
| Fortitude Family Office, LLC | 0.00% | New | 56 | $648 |
| Bogart Wealth, LLC | 0.00% | No change | 50 | $579 |
| Parallel Advisors, LLC | 0.00% | Add +1.1% | 47 | $544 |
| EverSource Wealth Advisors, LLC | 0.00% | Reduce -31.7% | 31 | $359 |
| Essential Partners LLC | 0.00% | Reduce -81.1% | 4 | $46 |
"% of holder's portfolio" is STRO's weight in each manager's 13F, not the share of Sutro Biopharma Inc. Com SHS the manager owns.