Sera Prognostics, Inc. (SERA) ownership: Top institutional holder: BAKER BROS. ADVISORS LP ($11.16M). Insider activity: Net Seller (0 buys, 20 sells). SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| BAKER BROS. ADVISORS LP | 5498170.00 | $11.16M | 2026-03-31 |
| Whetstone Capital Advisors, LLC | 3306889.00 | $6.71M | 2026-03-31 |
| Aberdeen Group plc | 2550775.00 | $5.18M | 2026-03-31 |
| PSP Research LLC | 2396685.00 | $4.87M | 2026-03-31 |
| VANGUARD GROUP INC | 1239449.00 | $3.66M | 2025-12-31 |
| Vivo Capital, LLC | 1650440.00 | $3.35M | 2026-03-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 1204115.00 | $2.44M | 2026-03-31 |
| CAPTRUST FINANCIAL ADVISORS | 536761.00 | $1.09M | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-06-11 | |
| Sell | null | 2026-06-11 | |
| Sell | null | 2026-06-11 | |
| Sell | null | 2026-06-11 | |
| Sell | null | 2026-06-11 | |
| Sell | null | 2026-06-09 | |
| Sell | null | 2026-06-09 | |
| Sell | null | 2026-06-08 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.