Seaport Therapeutics, Inc (SPTX) insider trading
Every open-market stock purchase and sale by Seaport Therapeutics, Inc executives, directors, large shareholders and members of Congress, from SEC Form 4 filings. Sector: Other.
Insider activity at a glance
- Insiders bought $20M over the last 12 months (2 buys).
- Last insider buy: Robert J. Hombach (Insider), $236K, 3 months ago.
Last 12 months: insiders bought $20M (2 buys) and sold $0 (0 sales).
Recent SPTX insider trades
| Date | Insider | Trade | Value |
|---|---|---|---|
| Jun 22, 2026 | Robert J. Hombach (Insider) | Bought | $236K |
| May 4, 2026 | ARCH Venture Partners XII LLC (Insider) | Bought | $19.8M |
| May 4, 2026 | Michael Cunyuan Chen (C-suite exec) | Bought (not open market) | — |
| May 4, 2026 | Michael Cunyuan Chen (C-suite exec) | Bought (not open market) | — |
| May 4, 2026 | Lana Gladstein (General Counsel) | Bought (not open market) | — |
| May 4, 2026 | ARCH Venture Partners XII LLC (Insider) | Bought (not open market) | — |
| May 4, 2026 | ARCH Venture Partners XII LLC (Insider) | Bought (not open market) | — |
| May 4, 2026 | Steven M Paul (Insider) | Bought (not open market) | — |
| May 4, 2026 | PureTech Health plc (Insider) | Bought (not open market) | — |
| May 4, 2026 | PureTech Health plc (Insider) | Bought (not open market) | — |
| May 4, 2026 | PureTech Health plc (Insider) | Bought (not open market) | — |
| May 4, 2026 | PureTech Health plc (Insider) | Bought (not open market) | — |
| May 4, 2026 | PureTech Health plc (Insider) | Bought (not open market) | — |
| May 4, 2026 | PureTech Health plc (Insider) | Bought (not open market) | — |
| May 4, 2026 | Steven M Paul (Insider) | Bought (not open market) | — |
| May 4, 2026 | Denice Torres (Insider) | Bought (not open market) | — |
| May 4, 2026 | Denice Torres (Insider) | Bought (not open market) | — |
| May 4, 2026 | Lauren White (CFO) | Bought (not open market) | — |
| May 4, 2026 | James Healy (Insider) | Bought (not open market) | — |
| May 4, 2026 | Lauren White (CFO) | Bought (not open market) | — |
| May 4, 2026 | Lana Gladstein (General Counsel) | Bought (not open market) | — |
| May 4, 2026 | James Healy (Insider) | Bought (not open market) | — |
| May 4, 2026 | James Healy (Insider) | Bought (not open market) | — |
| May 4, 2026 | James Healy (Insider) | Bought (not open market) | — |
| May 4, 2026 | Antony Loebel (C-suite exec) | Bought (not open market) | — |
Who's trading SPTX
- Robert J. Hombach, Insider: bought $236K (1 buy), last Jun 22, 2026
- Michael Cunyuan Chen, C-suite exec: other filings, last May 4, 2026
- Lana Gladstein, General Counsel: other filings, last May 4, 2026
- James Healy, Insider: other filings, last May 4, 2026
- Antony Loebel, C-suite exec: other filings, last May 4, 2026
- ARCH Venture Partners XII LLC, Insider: bought $19.8M (1 buy), last May 4, 2026
- Steven M Paul, Insider: other filings, last May 4, 2026
- PureTech Health plc, Insider: other filings, last May 4, 2026
- Denice Torres, Insider: other filings, last May 4, 2026
- Lauren White, CFO: other filings, last May 4, 2026
- Sharon Mates, Insider: other filings, last Apr 30, 2026
- Daphne Zohar, CEO: other filings, last Apr 30, 2026
- Sandra E Peterson, Insider: other filings, last Apr 30, 2026
- David E. Wheadon, Insider: other filings, last Apr 30, 2026
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