Form4.ai tracks every SEC insider trade in real time. See every SEPN insider filing with a free account — no card.
See every SEPN insider filing — free account, no card.
Free accountSepterna, Inc. (SEPN) has 6 SEC Form 4 insider filings on record in the last 90 days. No insider purchases were filed — 2 sales totalling $70.9M. Most recent filing: Oct. 19, 2026.
Open-market value, last 90 days
Form 4 filings by type, last 90 days
| Date | Insider | Trade | Value | Price since buy |
|---|---|---|---|---|
| Oct 19, 2026 SEC filing | Bhatt Elizabeth President and COO | Cashless exercise | $122,404 | — |
| Sep 3, 2026 SEC filing | Long Daniel D. SVP, Drug Discovery | Cashless exercise | $116,879 | — |
| Aug 14, 2026 SEC filing | Third Rock Ventures V, L.P. 10% Owner | Sold | $7,399,858 | — |
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Form 4 is the filing company officers, directors and 10% shareholders must submit to the SEC within two business days of trading their own company's stock. Open-market purchases generally carry more signal than sales, which are often scheduled in advance. More on how this works.