- HCM II Acquisition Corp. and Terrestrial Energy Inc. jointly announced on **September 29, 2025**, that the U.S. Securities and Exchange Commission (SEC) declared effective the Registration Statement on Form S-4 for their proposed **business combination**.  **[2019804_0001213900-25-093191_ea0259069-8k425_hcm2acq.htm:1]** **[2019804_0001213900-25-093191_ea025906901ex99-1_hcm2acq.htm:1]** 
- An **Extraordinary General Meeting** of HCM II shareholders is scheduled for **October 20, 2025, at 9:30 a.m. Eastern Time**, to approve the Business Combination and related matters.  **[2019804_0001213900-25-093191_ea025906901ex99-1_hcm2acq.htm:1]** 
- Holders of HCM II's Class A and Class B ordinary shares as of the **September 24, 2025** record date are entitled to vote at the meeting.  **[2019804_0001213900-25-093191_ea025906901ex99-1_hcm2acq.htm:1]** 
- Assuming satisfaction of closing conditions and shareholder approval, the post-Business Combination company intends to list its securities on the Nasdaq Stock Market LLC under the proposed symbols **"IMSR" and "IMSRW"**.  **[2019804_0001213900-25-093191_ea025906901ex99-1_hcm2acq.htm:1]**

HCM II Acquisition (HOND)