Seaport Therapeutics, Inc. Common Stock (SPTX) Ownership & Trading Activity
Institutional holders, insider transactions, and congressional trades for SPTX. 13F holdings as of 2026-06-30.
In 13F filings for the quarter ended June 30, 2026, 50 institutions reported holding SPTX, with 37.4 million shares worth $813.5 million in aggregate.
Top Institutional Holders
| Institution | Shares | Value | Change |
|---|---|---|---|
| Arch Venture Management | 6,294,951 | $137M | NEW |
| General Atlantic, | 6,101,582 | $133M | NEW |
| Sofinnova Investments | 3,564,871 | $77M | NEW |
| Goldman Sachs | 2,178,642 | $47M | NEW |
| Trv GP VI | 2,061,222 | $45M | NEW |
Full institutional holdings, insider history, and congressional trades for Seaport Therapeutics, Inc. Common Stock on SentiSense.