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SPAC · Merger completed

HCM II Acquisition Corp.

Business combination with Terrestrial Energy Inc.

HCM II Acquisition Corp. is a blank-check company (SPAC) that raised $200M in its initial public offering on Aug 16, 2024, listing on Nasdaq Global Market. It completed its business combination with Terrestrial Energy Inc. on Oct 28, 2025; the combined company is Terrestrial Energy Inc. (IMSR). NatAlliance led the IPO, with Cantor and COO of. King & Spalding advised the SPAC and Ellenoff Grossman & Schole advised the underwriters on the IPO.

Terrestrial Energy is a developer of Generation IV nuclear plants that use its proprietary Integral Molten Salt Reactor (IMSR) technology. It is the target of a proposed business combination with a special purpose acquisition company.

Status
Merger completed
IPO date
Aug 16, 2024
IPO size
$200M
IPO exchange
Nasdaq Global Market
Target
Terrestrial Energy Inc.
Announced
Mar 26, 2025
Closed
Oct 28, 2025
Combined company
Terrestrial Energy Inc. (IMSR)
IPO underwriters
NatAlliance, Cantor, COO of, Amherst and Hondius Capital
SPAC counsel (IPO)
King & Spalding and Maples and Calder
Underwriters' counsel (IPO)
Ellenoff Grossman & Schole

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