Seaport Therapeutics (SPTX), a Boston-based biotech developing drugs to treat major depression, increased its IPO’s size at pricing – to 14.16 million shares – up from 11.8 million in the prospectus – and priced its IPO at $18.00 – the top of its range – to raise $254.88 million on Thursday night, April 30, 2026.
Shares of Seaport Therapeutics are set to start trading today – Friday, May 1, 2026 – on the NASDAQ.
Goldman Sachs, J.P. Morgan, Leerink Partners, Citigroup and Stifel are the joint book-runners.
At pricing, Seaport Therapeutics had a market cap of $954.5 million.
Seaport Therapeutics (SPTX) intends to use the IPO’s proceeds to help fund the Phase 2 clinical trials of its leading drug candidates, GlyphAllo (SPT-300) and GlyphAgo (SPT-320), to treat major depression, including postpartum depression.
The company is not profitable.
(For more information about this company, please check the IPO Calendar and the individual IPO Profile found on the IPOScoop.com website.)
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