SERA · Insider trading · 13F holders · Congress trades
Sera Prognostics, Inc. (SERA)
Who is buying and selling SERA: company insiders on SEC Form 4, hedge funds and superinvestors on Form 13F, and members of Congress under the STOCK Act. Every figure links to the filing or page it comes from.
- 13F filers holding
- 3
- Insider buys, 90 days
- $0
- Insider sales, 90 days
- $80K
- Congress trades, 12 months
- 0
SERA at a glance
- Between Aug 1, 2026 and Oct 29, 2026, 4 SERA insiders filed 6 sales worth $80K on SEC Form 4, and no open-market purchases.
- 3 13F filers hold SERA among their 50 largest positions, worth $14.0M combined. The biggest bets by portfolio weight are PSP Research LLC (3.4%), Whetstone Capital Advisors, LLC (1.6%) and Vivo Capital, LLC (0.3%).
- No member of Congress has disclosed a trade in SERA.
- SERA last closed at $2.06 on Oct 29, 2026.
SERA insider trading
Between Aug 1, 2026 and Oct 29, 2026, 4 SERA insiders filed 6 sales worth $80K on SEC Form 4, and no open-market purchases.
| Filed | Insider | Role | Trade | Shares | Price | Value | Form 4 |
|---|---|---|---|---|---|---|---|
| Oct 13, 2026 | Inglis Tiffany Eul Davis | Chief Medical Officer | Sale | 8,024 | $2.03 | $16K | SEC |
| Sep 11, 2026 | Lindgardt Zhenya | Chief Executive Officer, Director | Sale | 7,022 | $2.00 | $14K | SEC |
| Sep 11, 2026 | Jackson Benjamin | General Counsel | Sale | 2,190 | $2.00 | $4K | SEC |
| Sep 11, 2026 | Anderson Dyaarl Lee Jr. | Chief Commercial Officer | Sale | 1,800 | $2.00 | $4K | SEC |
| Sep 11, 2026 | Inglis Tiffany Eul Davis | Chief Medical Officer | Sale | 486 | $2.00 | $972.00 | SEC |
| Sep 9, 2026 | Lindgardt Zhenya | Chief Executive Officer, Director | Sale | 20,139 | $2.00 | $40K | SEC |
Who owns SERA? Hedge funds and superinvestors
3 13F filers hold SERA among their 50 largest positions, worth $14.0M combined. The biggest bets by portfolio weight are PSP Research LLC (3.4%), Whetstone Capital Advisors, LLC (1.6%) and Vivo Capital, LLC (0.3%).
| Manager | % of portfolio | Value | Shares | Last quarter | 13F |
|---|---|---|---|---|---|
| Whetstone Capital Advisors, LLCHedge fund | 1.6% | $6.0M | 3,306,889 | +0.0% shares | Q2 2026 |
| PSP Research LLCInstitutional asset manager | 3.4% | $5.0M | 2,396,685 | — | Q3 2026 |
| Vivo Capital, LLCHedge fund | 0.3% | $3.0M | 1,650,440 | +0.0% shares | Q2 2026 |
Each manager counts with its latest 13F (Q3 2026: 1, Q2 2026: 2). Screen SERA in the grand portfolio →
SERA stock trades by members of Congress
No member of Congress has disclosed a trade in SERA.
SERA questions and answers
Are insiders buying SERA stock?
Between Aug 1, 2026 and Oct 29, 2026, 4 SERA insiders filed 6 sales worth $80K on SEC Form 4, and no open-market purchases.
Which hedge funds own SERA?
3 13F filers hold SERA among their 50 largest positions, worth $14.0M combined. The biggest bets by portfolio weight are PSP Research LLC (3.4%), Whetstone Capital Advisors, LLC (1.6%) and Vivo Capital, LLC (0.3%).
Has Congress traded SERA?
No member of Congress has disclosed a trade in SERA.
Who is the largest holder of SERA?
Among 13F filers, Whetstone Capital Advisors, LLC reports the largest SERA position, $6.0M (3,306,889 shares) in its Q2 2026 13F. The biggest bet by portfolio weight is PSP Research LLC's: 3.4% of its portfolio.
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