Terrestrial Energy Inc. /DE/

For the period ended Mar 31, 2026. Filed May 14, 2026.

About this filing

A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.

Mar 31, 2026 · Filed May 14, 2026

IMSR$3.00+5.6%Stored close · as of Nov 9, 2026

Extracted filing text, with the paragraph anchors used by the comparison.

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Contents

Exhibit Index


Exhibit No.		Description

3.1		Composite Certificate of Incorporation of Terrestrial Energy Inc. (as amended through March 27, 2026) (incorporated by reference to Exhibit 3.1 of the Company’s Annual Report on Form 10-K, filed with the SEC on March 30, 2026)
3.2		Composite Bylaws of Terrestrial Energy Inc. (as amended through October 28, 2025) (incorporated by reference to Exhibit 3.2 of the Company’s Annual Report on Form 10-K, filed with the SEC on March 30, 2026)
3.3		Certificate of Designations for Special Voting Preferred Stock (incorporated by reference to Exhibit 3.3 of the Company’s Annual Report on Form 10-K, filed with the SEC on March 30, 2026)
4.1†		Description of Securities
10.1		Assignment, Assumption, Waiver and Covenant Agreement, dated as of February 18, 2026, by and between Simon Irish, Terrestrial Energy Inc., and Terrestrial Energy Development Inc. (incorporated by reference to Exhibit 10.15 of the Company’s Annual Report on Form 10-K, filed with the SEC on March 30, 2026)
10.2†‡		Canadian Addendum to Terrestrial Energy Inc. 2025 Equity Incentive Plan
10.3†‡		Form of Restricted Stock Unit Award (Canadian) under 2025 Plan
10.4†‡		Form of Non-Employee Director Restricted Stock Unit Award (Canadian) under 2025 Plan
10.5†‡		Form of Stock Option Award (Canadian) under 2025 Plan
31.1†		Certification of Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
31.2†		Certification of Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
32.1*		Certification of Chief Executive Officer Pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
32.2*		Certification of Chief Financial Officer Pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
101.INS†		XBRL Instance Document – the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document
101.SCH†		XBRL Taxonomy Extension Schema Document
101.CAL†		XBRL Taxonomy Extension Calculation Linkbase Document
101.DEF†		XBRL Taxonomy Extension Definition Linkbase Document
101.LAB†		XBRL Taxonomy Extension Label Linkbase Document
101.PRE†		XBRL Taxonomy Extension Presentation Linkbase Document
104†		Cover Page Interactive Data File (formatted in Inline XBRL and contained in Exhibit 101)

†	Filed herewith.

Furnished herewith.

‡ Management contract or compensatory plan or arrangement.

ContentsView on SEC.gov

The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.