Terrestrial Energy Inc. /DE/

For the period ended Sep 30, 2026. Filed Nov 10, 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.

Sep 30, 2026 · Filed Nov 10, 2026

IMSR$2.73-9.2%Stored close · as of Nov 10, 2026

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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)
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.

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.