Every 424B that Terrestrial Energy Inc. (IMSR) has filed with the SEC in the last 12 months is listed below, newest first, and each one links through to the document itself with the summary and the scores our analysis gives it.
A 424B covers the supplement that carries the terms of a priced offering, so if you follow IMSR and want that one kind of document rather than the whole filing history, this is the page to keep. The company's other filings, of every form, are on the full IMSR filings page.
Terrestrial Energy Inc. filed a prospectus supplement for a mixed offering covering a primary issuance of up to 53,492,818 shares of common stock and a secondary offering by selling holders of 13,723,445 shares of common stock and 1,267,599 warrants to purchase common stock. The supplement incorporates the company’s Quarterly Report for the period ended June 30, 2026.
For the first half of 2026, Terrestrial Energy reported an operating loss of $23.6 million and a net loss of $19.9 million, reflecting increased research and development and general and administrative spending as it advances its Integral Molten Salt Reactor program. Cash and cash equivalents were $130.7 million and short-term investments $142.8 million, supporting management’s view that liquidity is sufficient for at least the next twelve months. As of August 11, 2026, there were 105,935,254 ordinary shares outstanding.
Registration for up to 151,970,541 common shares and 18,350,000 warrants. This Supplement No. 3 to the Form S-4 prospectus updates the offering materials to incorporate Terrestrial Energy Inc.’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2026. The supplement clarifies current financials from the Form 10-Q: cash and cash equivalents of $76,946, short-term investments of $198,018, and a net loss of $10,503 for the three months ended March 31, 2026. The Form 10-Q shows common shares issued and outstanding of 82,242,434 as of March 31, 2026 and reports 105,935,254 ordinary shares outstanding as of May 6, 2026. The supplement amends and supersedes prior prospectus disclosures where inconsistent and should be read together with the Prospectus.
Terrestrial Energy Inc. files a Supplement No. 2 to its Prospectus (Form S-1) dated December 30, 2025, updating the offering terms and incorporating selected disclosures from its Quarterly Report on Form 10-Q for the quarter ended March 31, 2026.
The supplement registers a primary offering of up to 18,776,119 shares of common stock and a secondary (resale) offering of 18,792,599 shares, together with 1,267,599 warrants to purchase common stock. The filing cites condensed consolidated financials showing $76,946 in cash, $198,018 in short-term investments, and a net loss of $10,503 for the three months ended March 31, 2026. The supplement is conditioned by the Prospectus and updates that document where conflicts exist.