Welcome to our dedicated page for HCM II Acquisition SEC filings (Ticker: HOND), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
The SEC filings history associated with HCM II Acquisition Corp. (HOND) documents its life cycle as a SPAC and its transformation into Terrestrial Energy Inc., whose securities trade on Nasdaq under the symbols IMSR and IMSRW. These filings provide primary-source detail on the company’s structure, capital raising, business combination process and post-merger reporting.
Early filings include the registration statement for HCM II’s initial public offering of units, each consisting of a Class A ordinary share and a fraction of a redeemable warrant. Later, the company filed a registration statement on Form S-4 in connection with its proposed business combination with Terrestrial Energy, which included a proxy statement/prospectus for HCM II shareholders and a prospectus for the securities to be issued in the transaction.
Multiple Forms 8-K capture material events along the way. An 8-K dated September 29, 2025 notes that the SEC declared the S-4 effective. A subsequent 8-K filed on October 22, 2025 reports the results of the extraordinary general meeting at which shareholders approved the Business Combination Agreement, domestication, stock issuance proposals, new organizational documents, an equity incentive plan and director elections. Another 8-K dated October 29, 2025 describes the domestication of HCM II from the Cayman Islands to Delaware, the change of name to Terrestrial Energy Inc., and the commencement of trading of New Terrestrial common shares and warrants under IMSR and IMSRW.
An 8-K filed on November 3, 2025 provides an overview of the closing of the merger, including the exchange mechanics for Legacy Terrestrial Energy securities, the conversion of HCM II shares and warrants, and the PIPE financing terms. An 8-K/A filed on November 14, 2025 adds unaudited condensed consolidated financial statements of Legacy Terrestrial Energy, related management’s discussion and analysis, and unaudited pro forma condensed combined financial information for the combined company.
On Stock Titan’s filings page, users can access these documents as they appear on EDGAR, along with AI-powered summaries that explain the key points of each report. Filings such as Forms 8-K and 8-K/A around the closing of the business combination are particularly relevant for understanding how HCM II’s HOND-era securities converted into the current IMSR and IMSRW structure and how the SPAC’s financial information was combined with that of Terrestrial Energy.
Terrestrial Energy Inc. filed Amendment No. 1 to its Form 8-K to add financial information related to its recently completed business combination. The update includes (1) unaudited condensed consolidated financial statements of Legacy Terrestrial Energy as of September 30, 2025 and for the three and nine months ended September 30, 2025 and 2024, (2) Legacy Terrestrial Energy’s MD&A for the nine months ended September 30, 2025 and 2024, and (3) the Company’s unaudited pro forma condensed combined financial information as of and for the nine months ended September 30, 2025 and for the year ended December 31, 2024. The exhibits are labeled 99.1, 99.2, and 99.3. The Company’s securities trade on Nasdaq as IMSR (common stock) and IMSRW (warrants).
Terrestrial Energy Inc. reported an insider ownership update on a Form 4. On November 6, 2025, HCM Investor Holdings II, LLC (the “Sponsor”) made a Rule 16a-13 exempt distribution to its members for no consideration.
The Sponsor distributed an aggregate 5,675,000 shares of common stock and 4,275,000 warrants. Shawn Matthews received 2,755,000 shares and 775,000 warrants. Following the transactions, the tables show 533,514 shares held directly and 2,755,000 shares held indirectly. Warrants carried a $11.5 exercise price, became exercisable on 11/27/2025, and expire on 10/28/2030, with indirect holdings including 775,000 warrants via the Sponsor and 1,267,599 warrants via Hondo Holdings LLC.
Terrestrial Energy Inc. (IMSR) filed an initial Form 3 for a director, reporting beneficial ownership as of 10/28/2025, following the closing of the business combination between the former HCM II Acquisition Corp. and Legacy Terrestrial, where securities were received in exchange for Legacy holdings.
The director holds 6,758 shares of Common Stock directly. Reported derivatives include stock options for 178,812 shares at $2.0133 expiring 06/09/2039 (milestone-based vesting), options for 67,055 shares at $2.237 expiring 04/01/2043 (vesting one-third annually over three years), options for 134,109 shares at $2.237 expiring 04/24/2044 (same vesting), and warrants for 22,352 shares at $2.237 expiring 07/31/2028. A contingent value right may deliver additional shares if the 20-day VWAP after the lock-up is less than 75% of the $7.905 redemption price.
Terrestrial Energy Inc. (IMSR) reported an insider ownership update via Form 3 following an event on 10/28/2025. The filing shows a director holds stock options to purchase 134,109 shares of common stock at an exercise price of $2.237 per share.
The options are listed as exercisable beginning 01/29/2024 and expire on 01/29/2043. According to the plan terms, they vest in one-third increments on each of the first, second, and third anniversaries of the grant date, subject to continued service. No non-derivative holdings were reported in Table I, and the reported derivative position is held directly.
Terrestrial Energy Inc. (IMSR) filed a Form 3 reporting a director’s initial beneficial ownership as of 10/28/2025. The filing lists stock options for 22,352 shares at $2.237 expiring on 12/03/2044 and 44,703 shares at $7.8295 expiring on 05/19/2045. These options were granted under the Second Amended and Restated 2024 Stock Option Plan and vest in one‑third increments on each of the first, second, and third anniversaries of the grant date, subject to continued service.
Terrestrial Energy Inc. (IMSR) filed an initial statement of beneficial ownership for a director effective 10/28/2025.
The reporting person holds 25,946 shares of Common Stock (direct). Derivative holdings include stock options for 447,030 shares at $0.0028 (CAD) expiring 02/01/2036; 670,544 shares at $1.1185 (CAD) expiring 02/01/2036; 111,758 shares at $1.4764 (CAD) expiring 02/06/2037; and smaller grants including 6,035 shares at $2.0133 expiring 06/16/2038. Additional options at $2.237 cover 11,176 (expires 05/19/2042) and 78,231 (expires 04/01/2043), with others expiring through 01/01/2045. Prices noted in CAD.
The filing lists Exchangeable Shares for 558,787 (direct) and 134,109 (indirect) shares, exchangeable into Common Stock with no expiration, and warrants for 78,231 shares at $2.237 expiring 07/31/2028. A contingent value right may deliver additional shares if the 20‑day VWAP after the lock‑up is below 75% of the $7.905 redemption price. Holdings reflect exchanges tied to the Business Combination with Legacy Terrestrial.
Terrestrial Energy Inc. (IMSR) disclosed an initial statement of beneficial ownership for its Chief Technology Officer and Director. The filing reports 5,981 shares of Common Stock held directly and 13,731 shares held indirectly through an entity.
Derivative holdings include stock options currently exercisable for 17,792 shares (expiring 06/16/2038 at
The holdings reflect securities received in connection with the business combination between HCM II Acquisition Corp. and Legacy Terrestrial, effective for the reporting date of 10/28/2025.
Terrestrial Energy Inc. (IMSR) disclosed an initial statement of beneficial ownership (Form 3) by a director. The filing reports 6,669 shares of Common Stock held directly and 14,930 shares held indirectly through a trust.
Derivative holdings include stock options for 22,352 shares exercisable at $1.4764 (price in Canadian dollars) expiring 10/01/2036, 111,758 shares at $2.0133 expiring 11/19/2037, and options for 67,055 shares at $2.237 expiring 04/01/2043 (vesting in thirds annually from 04/01/2024) and 67,055 shares at $2.237 expiring 02/03/2045 (vesting in thirds from 02/03/2026). Warrants cover 22,352 shares (direct) and 44,703 shares (through a trust) at $2.237 expiring 07/31/2028. Contingent value rights may deliver additional shares if the 20‑day VWAP after the lock‑up is less than 75% of the $7.905 redemption price.
The equity positions were received in connection with the closing of the business combination between New Terrestrial and Legacy Terrestrial.
Terrestrial Energy Inc. disclosed an initial statement of beneficial ownership by a director. The filing reports 18,470 shares of Common Stock held directly.
The director also holds derivative securities: stock options for 447,030 shares at $0.2013 (CAD) expiring 06/01/2034 and 67,055 shares at $1.1185 (CAD) expiring 02/01/2036, both currently exercisable; an option for 67,055 shares vesting in thirds from 04/01/2024 and expiring 04/01/2043; and 55,879 warrants at $2.237 expiring 07/31/2028. A contingent value right may deliver additional shares if the 20‑day VWAP after the lock-up period is below 75% of the $7.905 redemption price.
These holdings reflect securities received in exchange at the closing of a business combination between HCM II Acquisition Corp. and Terrestrial Energy Development Inc.
Terrestrial Energy Inc. reported initial beneficial ownership for an officer on Form 3. The filing lists a stock option to purchase 134,109 shares of common stock at $9.1717 per share, exercisable on 07/09/2026 and expiring on 07/09/2045.
The option was granted under the company’s Second Amended and Restated 2024 Stock Option Plan and vests in one‑third increments on each of the first, second, and third anniversaries of the grant date, contingent on continued service.
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