Terrestrial Energy

IMSR

Market cap $1.56B

Terrestrial Energy begins trading today under the new ticker symbol “IMSR” after completing its business combination with HCM II Acquisition Corp. Terrestrial Energy received in excess of $292 million of gross transaction proceeds, before expenses, to support its business plan and accelerate technology commercialization Terrestrial Energy's Integral Molten Salt Reactor (IMSR) nuclear plants are designed to supply low-cost high-temperature, clean, firm and flexible heat and electricity, delivering sector-leading economics and time-to-market at fleet scale CHARLOTTE, N.C., Oct. 29, 2025 (GLOBE NEWSWIRE) -- Terrestrial Energy Inc. (Nasdaq: IMSR) (“Terrestrial Energy” or the “Company”), a developer of small modular nuclear plants using advanced reactor technology, announced that it will begin trading on the Nasdaq Stock Market LLC (“Nasdaq”) under the new ticker symbol “IMSR” at market open today, following the completion of its business combination with HCM II Acquisition Corp. (“HCM II”) (the “transaction”) on October 28, 2025.

Terrestrial Energy to begin trading on the Nasdaq Stock Market under ticker symbol “IMSR” on October 29, 2025 The transaction closed with gross proceeds exceeding $292 million before expenses, reflecting previously placed $50 million common stock PIPE and a negligible level of redemptions Transaction proceeds to accelerate commercial deployment of Terrestrial Energy's proprietary Integral Molten Salt Reactor (IMSR) nuclear technology CHARLOTTE, N.C. and STAMFORD, Conn.