UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Notice of Effectiveness
Effectiveness Date:
September 26, 2025 4:00 P.M.
Form:
S-4
CIK:
0002019804
Company Name:
HCM II Acquisition Corp.
File Number:
333-288735
CIK:
0002027582
Company Name:
Terrestrial Energy Inc.
File Number:
333-288735-01