Sera Prognostics Inc (SERA)
Who owns Sera Prognostics Inc (SERA)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 71.9% of the shares are freely tradable; institutional investors hold 63.1%.
Ownership Structure
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Baker Bros Advisors LP | 14.04 | 5,498,170 | +0.0 | 03/31/2026 |
| Whetstone Capital Advisors, LLC | 8.44 | 3,306,889 | -4.4 | 03/31/2026 |
| Aberdeen Group PLC | 6.51 | 2,550,775 | +11.9 | 03/31/2026 |
| PSP Research LLC | 6.12 | 2,396,685 | +0.0 | 03/31/2026 |
| Vivo Capital, LLC | 4.21 | 1,650,440 | +0.0 | 03/31/2026 |
| Vanguard Group Inc | 3.17 | 1,239,449 | +1.8 | 12/31/2025 |
| Vanguard Capital Management, LLC | 3.08 | 1,204,115 | +0.0 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| abrdn Healthcare Investors | 3.52 | 1,378,048 | +6.3 | 05/31/2026 |
| abrdn Healthcare Opportunities | 3.20 | 1,254,982 | +0.0 | 04/30/2026 |
| Vanguard Total Stock Mkt Idx Inv | 2.27 | 887,016 | +0.0 | 04/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 10. Jul 2026 | Phillips Joshua | Director | Other | 2,260 | 0.00 | – |
| 10. Jul 2026 | Phillips Joshua | Director | Other | 22,426 | 0.00 | – |
| 10. Jul 2026 | Barlow Jane F | Director | Other | 1,949 | 0.00 | – |
| 10. Jul 2026 | Barlow Jane F | Director | Other | 22,426 | 0.00 | – |
| 10. Jul 2026 | Mirza Mansoor Raza | Director | Other | 1,771 | 0.00 | – |
| 10. Jul 2026 | Mirza Mansoor Raza | Director | Other | 22,426 | 0.00 | – |
| 10. Jul 2026 | Kamdar Kim P. | Director | Other | 3,421 | 0.00 | – |
| 10. Jul 2026 | Kamdar Kim P. | Director | Other | 22,426 | 0.00 | – |
| 10. Jul 2026 | Capone Mark Christopher | Director | Other | 1,975 | 0.00 | – |
| 10. Jul 2026 | Capone Mark Christopher | Director | Other | 42,404 | 0.00 | – |
| 10. Jul 2026 | Lawrence Sandra AJ | Director | Other | 2,276 | 0.00 | – |
| 10. Jul 2026 | Lawrence Sandra AJ | Director | Other | 22,426 | 0.00 | – |
| 10. Jul 2026 | Critchfield Gregory C | Director | Other | 1,594 | 0.00 | – |
| 10. Jul 2026 | Critchfield Gregory C | Director | Other | 22,426 | 0.00 | – |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character.
View all insider transactions →Data as of: July 31, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.