Seaport Therapeutics, Inc. Common Stock (SPTX)
PHARMACEUTICAL PREPARATIONS
Seaport Therapeutics, Inc. Common Stock (SPTX) is listed on Nasdaq, where it has traded since May 1, 2026.
- Listed On
- Nasdaq
- Listed Since
- May 1, 2026
- Market Cap
- $1.1B
About Seaport Therapeutics, Inc. Common Stock
Seaport Therapeutics Inc is a clinical-stage therapeutics company. The company focuses on invention and development of new medicines for patients with depression, anxiety, and other debilitating neuropsychiatric disorders. The company identified clinically validated mechanisms with established efficacy and safety profiles, historically limited by high first-pass metabolism, low bioavailability, and side effects. The company's pipeline products are based on Glyph, company's lymphatic-targeting prodrug technology is designed to bypass first-pass metabolism and thereby enhance a drug's oral bioavailability and reduce side effects.
Institutional ownership
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. The largest reported holder was Arch Venture Management, with 6.3 million shares worth $136.6 million. Of the 5 largest holders listed below, all 5 opened new positions in SPTX during the quarter.
| Institution | Shares | Value | Quarter change |
|---|---|---|---|
| Arch Venture Management | 6,294,951 | $137M | New position |
| General Atlantic, | 6,101,582 | $133M | New position |
| Sofinnova Investments | 3,564,871 | $77M | New position |
| Goldman Sachs | 2,178,642 | $47M | New position |
| Trv GP VI | 2,061,222 | $45M | New position |
Form 13F is a quarterly report that institutional investment managers with at least $100 million in qualifying securities file with the SEC. It lists long positions as of the last day of the quarter and is due within 45 days of quarter end, so these holdings describe that date rather than today.
Frequently asked questions
What is SPTX?
Seaport Therapeutics, Inc. Common Stock (SPTX) is listed on Nasdaq, where it has traded since May 1, 2026.
Who are the largest institutional holders of SPTX?
In 13F filings for the quarter ended June 30, 2026, the largest reported holders of SPTX were Arch Venture Management, General Atlantic, and Sofinnova Investments.
How many institutions own SPTX?
50 institutions reported a position in SPTX for the quarter ended June 30, 2026, worth $813.5 million in total.
Did institutions buy or sell SPTX last quarter?
Of the 5 largest reported holders, all 5 opened new positions in SPTX during the quarter. Every reported holder and its change is on the SentiSense ownership page for SPTX.
Every reported institutional holder, plus insider and congressional trades in SPTX, on SentiSense.