{"transactions":[{"id":1011455,"issuer":{"id":5288,"kind":"organization","name":"Terrestrial Energy Inc. /DE/","symbol":"IMSR"},"owners":[{"id":73776,"kind":"person","name":"Brenner Andrew Scott","position":1,"cik":"0002030321","reported_name":"Brenner Andrew Scott","relationship":{"director":false,"officer":false,"ten_percent_owner":false,"other":true,"other_text":"Former Director"}}],"security":"Common Stock, par value $0.0001 per share","published_at":"2025-10-30T20:33:06.000Z","date":"2025-10-28","kind":"other","planned":false,"acquired":true,"shares":25000,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Upon closing of the business combination (the \"Business Combination\") between the Issuer (which was formerly known as HCM II Acquisition Corp. or \"HCM II\") and Terrestrial Energy Inc. (\"Terrestrial\") the reporting person acquired these securities in exchange for the reporting person's securities in Terrestrial pursuant to the terms and conditions of the business combination agreement, by and among HCM, Terrestrial and HCM II Merger Sub Inc. (the \"BCA\"). The reporting person resigned as a director of HCM II upon the closing of the Business Combination."}],"balance_after":25000,"source":{"system":"sec-edgar","filing":"0001213900-25-104333","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/2030321/000121390025104333/ownership.xml","form_type":"4"}},{"id":1427943,"issuer":{"id":5288,"kind":"organization","name":"Terrestrial Energy Inc. /DE/","symbol":"IMSR"},"owners":[{"id":73776,"kind":"person","name":"Brenner Andrew Scott","position":1,"cik":"0002030321","reported_name":"Brenner Andrew Scott","relationship":{"director":true}}],"security":"Class B Ordinary Shares","published_at":"2024-08-20T20:52:54.000Z","date":"2024-08-19","kind":"other","planned":false,"acquired":true,"shares":25000,"price":0.004,"value":100.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"The Class B ordinary shares are automatically convertible into the shares of the Issuer's Class A ordinary shares at the time of the Issuer's initial business combination on a one-for-one basis, subject to adjustment pursuant to certain anti-dilution rights, and have no expiration date. The Class B ordinary shares are subject to forfeiture under certain circumstances relating to the reporting person's service on the Issuer's Board of Directors."},{"field":"kind","element":"transactionCoding","label":"F2","text":"As contemplated by the securities purchase agreement between HCM Investor Holdings II, LLC (the \"Sponsor\") and the reporting person, dated August 19, 2024, the Sponsor assigned 25,000 Class B ordinary shares to the reporting person in connection with reporting person's appointment to the Issuer's Board of Directors."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The Class B ordinary shares are automatically convertible into the shares of the Issuer's Class A ordinary shares at the time of the Issuer's initial business combination on a one-for-one basis, subject to adjustment pursuant to certain anti-dilution rights, and have no expiration date. The Class B ordinary shares are subject to forfeiture under certain circumstances relating to the reporting person's service on the Issuer's Board of Directors."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"The Class B ordinary shares are automatically convertible into the shares of the Issuer's Class A ordinary shares at the time of the Issuer's initial business combination on a one-for-one basis, subject to adjustment pursuant to certain anti-dilution rights, and have no expiration date. The Class B ordinary shares are subject to forfeiture under certain circumstances relating to the reporting person's service on the Issuer's Board of Directors."}],"balance_after":25000,"derivative":{"underlying":"Class A Ordinary Shares","underlying_shares":25000},"source":{"system":"sec-edgar","filing":"0001140361-24-037986","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/2030321/000114036124037986/form4.xml","form_type":"4"}}]}