SEPN: Septerna, Inc. insider trading, 5% holders and institutional ownership
From public SEC filings: open-market insider purchases and sales (Form 4, last 180 days), holders of 5% or more (Schedules 13D and 13G) and institutional ownership (Form 13F). Insider and 5% data delayed 48 hours.
Insider trading
0 open-market buys totaling - and 2 sales totaling $150K in the last 180 days.
Insider sales
| Trade date | Insider | Role | Value | 10b5-1 plan |
|---|---|---|---|---|
| 2026-10-15 | Bhatt Elizabeth | President | $40K | yes |
| 2026-10-15 | Bhatt Elizabeth | President | $109K | yes |
Activist and 5% holders
| Filed | What | Holder | Stake | Change | Filing |
|---|---|---|---|---|---|
| 2026-08-14 | 13D amendment | RA Capital Management, L.P. | 11.80% | SEC | |
| 2026-08-14 | 13G amendment | DRIEHAUS CAPITAL MANAGEMENT LLC | 9.83% | SEC |
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