Institutional Ownership
Sutro Biopharma Inc
CUSIP 869367102COMSTROQ1 2026
13D / 13G Filings
54
Schedule 13D/13G on record
Beneficial Filers
27
Distinct reporting persons
Largest Stake
11.0%
Max % of class reported
Institutional Holders
7
13F filers (latest quarter)
Beneficial Owners — Schedule 13D / 13G
54 filings · latest Feb 13, 2026
| # | Filed | Reporting Person | Form | % of Class | Shares | Filing |
|---|---|---|---|---|---|---|
| 1 | Feb 13, 2026 | Suvretta Capital Management, LLC | 13G/A | — | — | SEC |
| 2 | Feb 13, 2026 | Suvretta Capital Management, LLC | 13G/A | — | — | SEC |
| 3 | Oct 23, 2025 | Affinity Healthcare Fund, LP | 13G | 7.8% | 6.58M | SEC |
| 4 | Aug 14, 2025 | Ra Capital Management, L.P. | 13G/A | — | 913.30M | SEC |
| 5 | Aug 13, 2025 | Suvretta Capital Management, LLC | 13G/A | 7.7% | 6.49M | SEC |
| 6 | Jul 29, 2025 | The Vanguard Group | 13G/A | 4.9% | 4.12M | SEC |
| 7 | Jul 16, 2025 | Blackrock, Inc. | 13G/A | 2.5% | 2.09M | SEC |
| 8 | Jun 30, 2025 | Millennium Management LLC | 13G | 11.0% | 4.72M | SEC |
| 9 | May 15, 2025 | Kynam Capital Management, LP | 13G | 6.4% | 5.44M | SEC |
| 10 | Apr 17, 2025 | Blackrock, Inc. | 13G/A | 7.3% | 6.14M | SEC |
44 more beneficial-ownership filings on Premium
See the full Schedule 13D/13G history for Sutro Biopharma Inc.
Unlock full historyTop Institutional Holders (13F)
Largest reported positions · latest quarter
| # | Fund | Shares | Value |
|---|---|---|---|
| 1 | Merck & Co., Inc. | 272.4K | $6.78M |
| 2 | Aju Ib Investment Co., Ltd. | 17.5K | $435.9K |
| 3 | Fortitude Family Office, LLC | 56 | $1.4K |
| 4 | Bogart Wealth, LLC | 50 | $1.2K |
| 5 | Parallel Advisors, LLC | 47 | $1.2K |
| 6 | Eversource Wealth Advisors, LLC | 19 | $473 |
| 7 | Advisory Services Network, LLC | 15 | $374 |