Sera Prognostics, Inc. (SERA) ownership: insiders 6% · institutions 38% · index and ETF funds 2% (13F 2026-03-31). Insider activity, 90 days: 8 sales, 0 open-market buys. SEC EDGAR first-party data.
| Holder | Shares | Market Value | % Outstanding | Reported |
|---|---|---|---|---|
| Baker BROS. Advisors LP | 5498170.00 | $11.16M | 10.9% | 2026-03-31 |
| Whetstone Capital Advisors, LLC | 3306889.00 | $6.71M | 6.6% | 2026-03-31 |
| abrdn | 2550775.00 | $5.18M | 5.1% | 2026-03-31 |
| PSP Research LLC | 2396685.00 | $4.87M | 4.7% | 2026-03-31 |
| Vivo Capital, LLC | 1650440.00 | $3.35M | 3.3% | 2026-03-31 |
| Vanguard | 1384945.00 | $2.81M | 2.7% | 2026-03-31 |
| Captrust Financial Advisors | 536761.00 | $1.09M | 1.1% | 2026-03-31 |
| Geode Capital Management | 363617.00 | $738511.00 | 0.7% | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-08-31 | |
| Sell | null | 2026-08-31 | |
| Sell | null | 2026-08-31 | |
| Sell | null | 2026-07-10 | |
| Sell | null | 2026-07-10 | |
| Sell | null | 2026-07-10 | |
| Sell | null | 2026-07-10 | |
| Sell | null | 2026-07-10 |
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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.