Terrestrial Energy Inc. /DE/ (IMSR): M&A transaction — Terrestrial Energy completes de-SPAC merger; shares start trading Oct 29 on Nasdaq under IMSR

Terrestrial Energy Inc. /DE/

Business combination closed Oct 28; Legacy Terrestrial Energy becomes wholly owned sub of New Terrestrial Energy.
Exchange ratio of 44.7029 applied; issued ~47.7M common shares to legacy securityholders.
PIPE investors contributed $50M at $10/share for 5M shares.
Sponsor and key holders subject to 12-month lock-up; early release triggers at VWAP of $15 and $20.
Common and warrants begin Nasdaq trading Oct 29 under IMSR and IMSRW.

item 1.01 item 2.01 item 5.02 item 3.02 item 9.01 item 3.03 item 5.01 item 5.03 item 5.05 item 5.06

Key facts

Extracted from this filing and checked against the source text.

Governance Changes SEC 8-K Item 5.03/5.05/5.06 confidence 0.95

Terrestrial Energy Inc. /DE/: Upon closing of the merger, the bylaws were amended to rename the company 'Terrestrial Energy Inc.' (effective 2025-10-23).

Change: bylaw amendment
Effective: 2025-10-23

Exact text from the filing

Upon the Closing, the Bylaws were amended to rename the company "Terrestrial Energy Inc."

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Governance Changes SEC 8-K Item 5.03/5.05/5.06 confidence 0.95

Terrestrial Energy Inc. /DE/: Effective at the effective time of the merger, the board adopted a new Code of Business Conduct and Ethics applicable to all employees, officers and directors (effective 2025-10-23).

Change: code of ethics
Effective: 2025-10-23

Exact text from the filing

Effective upon the Effective Time of the Merger, in connection with the consummation of the Transactions, the Board adopted a new Code of Business Conduct and Ethics, which is applicable to all employees, officers and directors of the Company

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Governance Changes SEC 8-K Item 5.03/5.05/5.06 confidence 0.95

Terrestrial Energy Inc. /DE/: HCM II ceased being a shell company upon completion of the merger (effective 2025-10-23).

Change: shell status
Effective: 2025-10-23

Exact text from the filing

As a result of the Transactions, HCM II ceased being a shell company upon the completion of the Merger.

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Governance Changes SEC 8-K Item 5.03/5.05/5.06 confidence 0.95

Terrestrial Energy Inc. /DE/: Filed Certificate of Incorporation with Delaware Secretary of State in connection with the Domestication (effective 2025-10-23).

Change: charter amendment
Effective: 2025-10-23

Exact text from the filing

On October 23, 2025, in connection with the Domestication, HCM II filed the Certificate of Incorporation with the Secretary of State of the State of Delaware.

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M&A Transactions SEC 8-K Item 2.01/5.01 confidence 0.9

Terrestrial Energy Inc. /DE/ underwent a change of control involving HCM II Acquisition Corp. (closed 2025-10-28).

Action: change of control
Counterparty: HCM II Acquisition Corp.
Closing: 2025-10-28

Exact text from the filing

On October 28, 2025, in connection with the consummation of the Transactions and as contemplated by the Business Combination Agreement, New Terrestrial Energy, Cantor and the Sponsor entered into an Amended and Restated registration rights agreement

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89 governance changes filed in the last 30 days. Browse all governance changes →

Terrestrial Energy Inc. /DE/ filing history →

Source: SEC EDGAR

accession 0001213900-25-105304

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