# Septerna, Inc. (SEPN) insider trading, Q3 2026

Canonical: https://sec-api.dev/insider-trading/sepn

> 18 non-derivative transactions: 0 purchases, 11 sales ($72.4M). CIK 1984086.

| Date | Insider | Relationship | Code | Shares | Price | Owned after | Filing |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 2026-09-01 | Long Daniel D. | Officer | M | 3333.0 | 2.76 | 99745.0 | https://www.sec.gov/Archives/edgar/data/1984086/000119312526382267/0001193125-26-382267-index.htm |
| 2026-09-01 | Long Daniel D. | Officer | S | 3333.0 | 37.83 | 96412.0 | https://www.sec.gov/Archives/edgar/data/1984086/000119312526382267/0001193125-26-382267-index.htm |
| 2026-08-12 | Third Rock Ventures GP VI, L.P. / Third Rock Ventures V, L.P. / Third Rock Ventures GP V, LP / TRV GP V, LLC / Third Rock Ventures VI, L.P. / TRV GP VI, LLC | TenPercentOwner | S | 141.0 | 51.08 | 6068391.0 | https://www.sec.gov/Archives/edgar/data/1984086/000119312526352692/0001193125-26-352692-index.htm |
| 2026-08-12 | Third Rock Ventures GP VI, L.P. / Third Rock Ventures V, L.P. / Third Rock Ventures GP V, LP / TRV GP V, LLC / Third Rock Ventures VI, L.P. / TRV GP VI, LLC | TenPercentOwner | S | 147059.0 | 50.27 | 6068532.0 | https://www.sec.gov/Archives/edgar/data/1984086/000119312526352692/0001193125-26-352692-index.htm |
| 2026-08-12 | Shah Rajeev M. / RA Capital Nexus Fund III, L.P. / RA Capital Healthcare Fund LP / RA CAPITAL MANAGEMENT, L.P. / Kolchinsky Peter | Director, TenPercentOwner | S | 746500.0 | 42.5 | 4777415.0 | https://www.sec.gov/Archives/edgar/data/1984086/000123191926000938/0001231919-26-000938-index.htm |
| 2026-08-12 | Shah Rajeev M. / RA Capital Nexus Fund III, L.P. / RA Capital Healthcare Fund LP / RA CAPITAL MANAGEMENT, L.P. / Kolchinsky Peter | Director, TenPercentOwner | S | 746500.0 | 42.5 | 725443.0 | https://www.sec.gov/Archives/edgar/data/1984086/000123191926000938/0001231919-26-000938-index.htm |
| 2026-08-11 | Bhatt Elizabeth | Officer | M | 18681.0 | 6.81 | 192890.0 | https://www.sec.gov/Archives/edgar/data/1984086/000119312526349810/0001193125-26-349810-index.htm |
| 2026-08-11 | Bhatt Elizabeth | Officer | S | 25000.0 | 44.0 | 174209.0 | https://www.sec.gov/Archives/edgar/data/1984086/000119312526349810/0001193125-26-349810-index.htm |
| 2026-08-11 | Bhatt Elizabeth | Officer | M | 6319.0 | 2.76 | 199209.0 | https://www.sec.gov/Archives/edgar/data/1984086/000119312526349810/0001193125-26-349810-index.htm |
| 2026-08-03 | Long Daniel D. | Officer | S | 2334.0 | 34.68 | 96412.0 | https://www.sec.gov/Archives/edgar/data/1984086/000119312526335820/0001193125-26-335820-index.htm |
| 2026-08-03 | Long Daniel D. | Officer | S | 1000.0 | 33.98 | 98746.0 | https://www.sec.gov/Archives/edgar/data/1984086/000119312526335820/0001193125-26-335820-index.htm |
| 2026-08-03 | Long Daniel D. | Officer | M | 1816.0 | 2.76 | 98228.0 | https://www.sec.gov/Archives/edgar/data/1984086/000119312526335820/0001193125-26-335820-index.htm |
| 2026-08-03 | Long Daniel D. | Officer | M | 1518.0 | 2.76 | 99746.0 | https://www.sec.gov/Archives/edgar/data/1984086/000119312526335820/0001193125-26-335820-index.htm |
| 2026-07-15 | Bhatt Elizabeth | Officer | S | 4000.0 | 33.99 | 174209.0 | https://www.sec.gov/Archives/edgar/data/1984086/000119312526308073/0001193125-26-308073-index.htm |
| 2026-07-15 | Bhatt Elizabeth | Officer | M | 4000.0 | 6.81 | 178209.0 | https://www.sec.gov/Archives/edgar/data/1984086/000119312526308073/0001193125-26-308073-index.htm |
| 2026-07-01 | Long Daniel D. | Officer | S | 1233.0 | 34.81 | 96412.0 | https://www.sec.gov/Archives/edgar/data/1984086/000119312526295106/0001193125-26-295106-index.htm |
| 2026-07-01 | Long Daniel D. | Officer | M | 3333.0 | 2.76 | 99745.0 | https://www.sec.gov/Archives/edgar/data/1984086/000119312526295106/0001193125-26-295106-index.htm |
| 2026-07-01 | Long Daniel D. | Officer | S | 2100.0 | 34.1 | 97645.0 | https://www.sec.gov/Archives/edgar/data/1984086/000119312526295106/0001193125-26-295106-index.htm |

Source: https://www.sec.gov/data-research/sec-markets-data/insider-transactions-data-sets

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