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Seaport Therapeutics raises about $255 million in upsized IPO

By Thomson Reuters Apr 30, 2026 | 10:25 PM

April 30 (Reuters) – Drug developer Seaport Therapeutics said on Thursday it had raised about $255 million in ​its upsized initial public ‌offering in the United States.

Here are the details:

• The company sold 14.16 million shares at $18 apiece, the company said in ‌a ​statement.

• Previously, Boston-based Seaport ⁠had planned to ⁠raise up to $212.4 million by offering 11.8 million shares priced between $16 and $18 each, potentially valuing the company ​at as much as about $912 million.

• The clinical-stage biotech company ⁠is developing oral ⁠therapies for depression, anxiety and ​other neuropsychiatric disorders. Its lead candidate, ​GlyphAllo, is being developed for a ‌major depressive disorder.

• Biotech listings are returning to stock markets after a drought through much of 2025, ⁠as recent central bank rate cuts help revive capital flows, though war-driven inflation ⁠may lead ‌to rate hikes later ⁠this year.

• Seaport is ​expected ‌to list on the Nasdaq ​under the ⁠ticker symbol “SPTX”.

• Goldman Sachs, J.P. Morgan and Leerink Partners are among the underwriters for the offering.

(Reporting by Preetika Parashuraman in Bengaluru; Editing by ​Sonia Cheema)