{"transactions":[{"id":794177,"issuer":{"id":4799,"kind":"organization","name":"Seaport Therapeutics, Inc."},"owners":[{"id":50023,"kind":"person","name":"Chen Michael Cunyuan","position":1,"cik":"0002127529","reported_name":"Chen Michael Cunyuan","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Scientific Officer"}}],"security":"Series B Preferred Stock","published_at":"2026-05-04T22:07:41.000Z","date":"2026-05-04","kind":"exercise","planned":false,"acquired":false,"shares":10526,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each share of Series B Preferred Stock (the \"Preferred Stock\") was convertible into Common Stock of the Issuer on a one-for-3.1407 basis at the option of the holder, and automatically converted upon the closing of the Issuer's initial public offering without payment of further consideration. The Preferred Stock had no expiration date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"Each share of Series B Preferred Stock (the \"Preferred Stock\") was convertible into Common Stock of the Issuer on a one-for-3.1407 basis at the option of the holder, and automatically converted upon the closing of the Issuer's initial public offering without payment of further consideration. The Preferred Stock had no expiration date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"Each share of Series B Preferred Stock (the \"Preferred Stock\") was convertible into Common Stock of the Issuer on a one-for-3.1407 basis at the option of the holder, and automatically converted upon the closing of the Issuer's initial public offering without payment of further consideration. The Preferred Stock had no expiration date."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":3351},"source":{"system":"sec-edgar","filing":"0001193125-26-204471","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/2042347/000119312526204471/ownership.xml","form_type":"4"}},{"id":794176,"issuer":{"id":4799,"kind":"organization","name":"Seaport Therapeutics, Inc."},"owners":[{"id":50023,"kind":"person","name":"Chen Michael Cunyuan","position":1,"cik":"0002127529","reported_name":"Chen Michael Cunyuan","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Scientific Officer"}}],"security":"Stock Option (Right to Buy)","published_at":"2026-05-04T22:07:41.000Z","date":"2026-04-30","kind":"grant","planned":false,"acquired":true,"shares":63680,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The shares underlying this option shall vest in forty-eight (48) equal monthly installments following April 30, 2026, subject to the Reporting Person's continued service on each such vesting date."}],"balance_after":63680,"derivative":{"exercise_price":18,"expiration_date":"2036-04-29","underlying":"Common Stock","underlying_shares":63680},"source":{"system":"sec-edgar","filing":"0001193125-26-204471","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/2042347/000119312526204471/ownership.xml","form_type":"4"}},{"id":794175,"issuer":{"id":4799,"kind":"organization","name":"Seaport Therapeutics, Inc."},"owners":[{"id":50023,"kind":"person","name":"Chen Michael Cunyuan","position":1,"cik":"0002127529","reported_name":"Chen Michael Cunyuan","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Scientific Officer"}}],"security":"Common Stock","published_at":"2026-05-04T22:07:41.000Z","date":"2026-05-04","kind":"exercise","planned":false,"acquired":true,"shares":3351,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Each share of Series B Preferred Stock (the \"Preferred Stock\") was convertible into Common Stock of the Issuer on a one-for-3.1407 basis at the option of the holder, and automatically converted upon the closing of the Issuer's initial public offering without payment of further consideration. The Preferred Stock had no expiration date."}],"balance_after":3351,"source":{"system":"sec-edgar","filing":"0001193125-26-204471","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/2042347/000119312526204471/ownership.xml","form_type":"4"}}]}