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Insider buying
Arch Venture Partners Xii, Llc bought $19.8M of Seaport Therapeutics, Inc. (SPTX) stock
Arch Venture Partners Xii, Llc, 10% owner of Seaport Therapeutics, Inc. (SPTX), bought 1,100,000 shares of SPTX stock worth $19.8M, per an SEC Form 4 filed May 4, 2026.
It was an open-market purchase.
The trade was reported on May 4, 2026.
SPTX has moved +24.2% since the trade date, from $17.00 to $21.12 (Sep 21, 2026 close).
- Traded
- May 4, 2026
- Disclosed
- May 4, 2026
- Filing delay
- 0 days
- Price since
- +24.2%
- Role
- 10% owner
- Source
- SEC Form 4
More SPTX insider and Congress trades
From a public SEC Form 4, linked above. Not investment advice, and not a recommendation to buy or sell.