SERA — SERA PROGNOSTICS, INC.
Price · 2024-08-26 → 2026-08-21
499 daily closes shownAnonymous view is capped at two years of history. A free account extends it to five, and Pro opens the whole archive back to 2021-07-15.
Performance
Technicals
Others in Healthcare
Measured signals that fired on SERA
| date | signal | measured base rate |
|---|---|---|
| 2026-06-15 | Cluster sale: three or more insiders insider | -0.37% over 21 days · t = -3.38 · n = 21,542 statistically distinguishable from its control group |
| 2026-03-25 | Short volume far above its own normal short | -0.76% over 21 days · t = -2.79 · n = 5,897 statistically distinguishable from its control group |
| 2026-03-12 | Cluster sale: three or more insiders insider | -0.37% over 21 days · t = -3.38 · n = 21,542 statistically distinguishable from its control group |
Excess return against a matched control group, on a point-in-time universe that includes delisted companies. Most families do not survive that. How the measurement works →
Insider transactions (Form 4)
| date | insider | what | shares | price | value |
|---|---|---|---|---|---|
| 2026-07-10 | Barlow Jane F Director | Grant or award | 1.9K | 0.00 | 0 |
| 2026-07-10 | CRITCHFIELD GREGORY C Director | Grant or award | 22.4K | 0.00 | 0 |
| 2026-07-10 | CRITCHFIELD GREGORY C Director | Grant or award | 1.6K | 0.00 | 0 |
| 2026-07-10 | Capone Mark Christopher Director | Grant or award | 42.4K | 0.00 | 0 |
| 2026-07-10 | Capone Mark Christopher Director | Grant or award | 2.0K | 0.00 | 0 |
| 2026-07-10 | Kamdar Kim P. Director | Grant or award | 22.4K | 0.00 | 0 |
| 2026-07-10 | Kamdar Kim P. Director | Grant or award | 3.4K | 0.00 | 0 |
| 2026-07-10 | Lawrence Sandra AJ Director | Grant or award | 22.4K | 0.00 | 0 |
| 2026-07-10 | Lawrence Sandra AJ Director | Grant or award | 2.3K | 0.00 | 0 |
| 2026-07-10 | Barlow Jane F Director | Grant or award | 22.4K | 0.00 | 0 |
Open-market purchases (code P) are the informative ones. Grants, option exercises and tax withholding are compensation mechanics, not decisions. How to read a Form 4 →
Largest institutional holders
| manager | value | shares |
|---|---|---|
| BAKER BROS. ADVISORS LP | 11.2M | 5.5M |
| Whetstone Capital Advisors, LLC | 6.7M | 3.3M |
| Aberdeen Group plc | 5.2M | 2.6M |
| PSP Research LLC | 4.9M | 2.4M |
| Vivo Capital, LLC | 3.4M | 1.7M |
| VANGUARD CAPITAL MANAGEMENT LLC | 2.4M | 1.2M |
| CAPTRUST FINANCIAL ADVISORS | 1.1M | 536.8K |
| GEODE CAPITAL MANAGEMENT, LLC | 738.5K | 363.6K |
| SANDERS MORRIS HARRIS LLC | 639.3K | 314.9K |
| CITADEL ADVISORS LLC | 505.3K | 248.9K |
13F positions as of 2026-03-31, filed up to 45 days after quarter end. Long-only US equity — shorts and derivatives never appear. What 13F does and does not show →
Short selling
This is off-exchange short volume, not short interest: it is flow, not position, and 40–50% is normal because market makers short to fill your buy. Why that number misleads →
Recent headlines
- Sera Prognostics, Inc. (SERA) filed form 8-K · 2026-08-19 · SEC EDGAR
- Sera Prognostics appoints Scott Gleason as CFO, effective Aug. 31 · 2026-08-19
- SERA PROGNOSTICS APPOINTS SCOTT GLEASON CHIEF FINANCIAL OFFICER · 2026-08-19
- Sera Prognostics, Inc. (SERA) filed form 8-K · 2026-08-12 · SEC EDGAR
- SERA PROGNOSTICS REPORTS SECOND QUARTER 2026 FINANCIAL RESULTS · 2026-08-12
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