Septerna, Inc. (SEPN) Insider Trading -- Recent Executive & Director Transactions
15 insiders reported 68 Form 4 transactions for Septerna, Inc. (SEPN) over the past 18 months (most recent 2026-09-03). Recent activity: Long Daniel D. (SVP, Drug Discovery) Buy 3,333 shares, Long Daniel D. (SVP, Drug Discovery) Sell 3,333 shares, Shah Rajeev M. (Director) Sell 746,500 shares, RA CAPITAL MANAGEMENT, L.P. (Director) Sell 746,500 shares, Kolchinsky Peter (Director) Sell 746,500 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-03 | Long Daniel D. | SVP, Drug Discovery | Buy | 3,333 | $9,199 |
| 2026-09-03 | Long Daniel D. | SVP, Drug Discovery | Sell | 3,333 | $126,078 |
| 2026-08-14 | Shah Rajeev M. | Director | Sell | 746,500 | $31.7M |
| 2026-08-14 | RA CAPITAL MANAGEMENT, L.P. | Director | Sell | 746,500 | $31.7M |
| 2026-08-14 | Kolchinsky Peter | Director | Sell | 746,500 | $31.7M |
| 2026-08-14 | Shah Rajeev M. | Director | Sell | 746,500 | $31.7M |
| 2026-08-14 | Third Rock Ventures V, L.P. | 10% Owner | Buy | 147,059 | $7.4M |
| 2026-08-14 | RA Capital Nexus Fund III, L.P. | Director | Sell | 746,500 | $31.7M |
| 2026-08-14 | Third Rock Ventures VI, L.P. | 10% Owner | Buy | 147,059 | $7.4M |
| 2026-08-14 | Third Rock Ventures GP V, LP | 10% Owner | Buy | 147,059 | $7.4M |
| 2026-08-14 | Third Rock Ventures GP VI, L.P. | 10% Owner | Buy | 147,059 | $7.4M |
| 2026-08-14 | TRV GP VI, LLC | 10% Owner | Buy | 147,059 | $7.4M |
| 2026-08-14 | TRV GP V, LLC | 10% Owner | Buy | 147,059 | $7.4M |
| 2026-08-14 | RA Capital Healthcare Fund LP | Director | Sell | 746,500 | $31.7M |
| 2026-08-14 | RA CAPITAL MANAGEMENT, L.P. | Director | Sell | 746,500 | $31.7M |
| 2026-08-14 | Kolchinsky Peter | Director | Sell | 746,500 | $31.7M |
| 2026-08-14 | RA Capital Healthcare Fund LP | Director | Sell | 746,500 | $31.7M |
| 2026-08-14 | Third Rock Ventures V, L.P. | 10% Owner | Buy | 141 | $7,202 |
| 2026-08-14 | RA Capital Nexus Fund III, L.P. | Director | Sell | 746,500 | $31.7M |
| 2026-08-14 | Third Rock Ventures VI, L.P. | 10% Owner | Buy | 141 | $7,202 |
| 2026-08-14 | Third Rock Ventures GP V, LP | 10% Owner | Buy | 141 | $7,202 |
| 2026-08-14 | Third Rock Ventures GP VI, L.P. | 10% Owner | Buy | 141 | $7,202 |
| 2026-08-14 | TRV GP VI, LLC | 10% Owner | Buy | 141 | $7,202 |
| 2026-08-14 | TRV GP V, LLC | 10% Owner | Buy | 141 | $7,202 |
| 2026-08-13 | Bhatt Elizabeth | President and COO | Buy | 18,681 | $127,218 |
Source: SEC Form 4 filings · as of 2026-09-03