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.
13F holders, Q3 2025
Institutional positions in Sutro Biopharma, Inc. as of Sep 30, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 88
- −13 vs. Q2 2025
- Shares held
- 53.4M
- −2.14M (−3.9%) vs. Q2 2025
- Total value
- $46.4M
- +$6.72M (+16.9%) vs. Q2 2025
- New holders
- 10
- 20 more added
- Sold out
- 23
- 33 more reduced
Compare with Q2 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting STRO on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 100 | $545.7M |
| Q1 2026 | 78 | $358.3M |
| Q4 2025 | 63 | $64.8M |
| Q3 2025 | 88 | $46.4M |
| Q2 2025 | 101 | $39.6M |
| Q1 2025 | 113 | $40.0M |
| Q4 2024 | 123 | $117.6M |
| Q3 2024 | 130 | $216.4M |
| Q2 2024 | 119 | $185.1M |
| Q1 2024 | 117 | $301.7M |
| Q4 2023 | 114 | $238.7M |
| Q3 2023 | 109 | $194.3M |
| Q2 2023 | 120 | $251.6M |
| Q1 2023 | 116 | $247.5M |
| Q4 2022 | 119 | $403.7M |
| Q3 2022 | 113 | $279.6M |
| Q2 2022 | 115 | $240.9M |
| Q1 2022 | 114 | $342.2M |
| Q4 2021 | 117 | $593.2M |
| Q3 2021 | 120 | $752.5M |
| Q2 2021 | 124 | $766.7M |
| Q1 2021 | 138 | $1.01B |
Institutions, Q3 2025
Shares, value and share of portfolio for each institution holding Sutro Biopharma, Inc.; share changes are against Q2 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Axxcess Wealth Management, LLC | 0 | $0 | 0.00% | −12,907−100.0% | Sold out |
| Pallas Capital Advisors LLC | 0 | $0 | 0.00% | −11,110−100.0% | Sold out |
| Captrust Financial Advisors | 0 | $0 | 0.00% | −10,998−100.0% | Sold out |
| Lazard Asset Management LLC | 0 | $0 | 0.00% | −10,947−100.0% | Sold out |
| GWM Advisors LLC | 0 | $0 | 0.00% | −4,113−100.0% | Sold out |
| Gen-Wealth Partners Inc | 0 | $0 | 0.00% | −4,042−100.0% | Sold out |
| Rialto Wealth Management, LLC | 0 | $0 | 0.00% | −707−100.0% | Sold out |
| Wells Fargo & Company | 0 | $0 | 0.00% | −693−100.0% | Sold out |
| Raymond James Financial Inc | 0 | $0 | 0.00% | −500−100.0% | Sold out |
| Clearstead Advisors, LLC | 0 | $0 | 0.00% | −121−100.0% | Sold out |
| Caitong International Asset Management Co., Ltd | 0 | $0 | 0.00% | −1−100.0% | Sold out |