Quick Takeaways
- Affinity Asset Advisors, LLC filed SCHEDULE 13G/A for Sutro Biopharma, Inc. Common Stock, $0.001 par value per share (STRO).
- Disclosed ownership: 8.8%.
- Date of event: 22 Jan 2026.
Affinity Asset Advisors, LLC - 22 Jan 2026 SCHEDULE 13G/A Report for Sutro Biopharma, Inc. Common Stock, $0.001 par value per share (STRO)
- Filing Manager
- Affinity Asset Advisors, LLC
- Reporting Manager
- Affinity Asset Advisors, LLC
- Symbol
- STRO
- Shares outstanding
- 8,504,341 shares
- Disclosed Ownership
- 748,382 shares
- Ownership
- 8.8%
- Form type
- SCHEDULE 13G/A
- Filing time
- 29 Jan 2026, 19:58:13 UTC
- Date of event
- 22 Jan 2026
- SEC
- View on sec.gov
Quoteable Key Fact
"Affinity Asset Advisors, LLC disclosed 8.8% ownership in Sutro Biopharma, Inc. Common Stock, $0.001 par value per share (STRO) on 22 Jan 2026."
What Changed
- No earlier schedule filing is available for direct comparison.
- Current filing was accepted on 29 Jan 2026, 19:58.
Why This Matters
- This page explains what this Schedule 13D/13G filing tells you before manager-level rows.
- You can verify ownership claims directly against the original SEC filing.
Source Evidence
Backed by Schedule 13D/13G
See Original Filing
Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.
Reporting Managers (2)
| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| Affinity Asset Advisors, LLC | 8.8% | 748,382 | 748,382 | 0 | /s/ Andrew Weinstein | Andrew Weinstein, Chief Financial Officer and Chief Compliance Officer | |
| Michael Cho | 8.8% | 748,382 | 748,382 | 0 | /s/ Michael Cho | Michael Cho, Self |