0002042347 2026-06-08 2026-06-08 false 0002042347 8-K 2026-06-08 Seaport Therapeutics, Inc. DE 001-43254 99-2235719 101 Seaport Blvd. Floor 12 Boston MA 02210 617 807-4062 Not Applicable false false false false Voting Common Stock, $0.0001 par value per share SPTX NASDAQ true false