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Terrestrial Energy Inc. /DE/

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

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A notice of a major event between regular reports, such as results, a deal or a change of executives. It is often the first formal record of the news.

May 14, 2026 · Filed May 14, 2026

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IMSR$2.84+10.7%Stored close · as of Nov 6, 2026
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EX-99.1 · Supply Chain Developments:

Supply Chain Developments:

•The Company’s materials’ testing and qualification programs continued during the quarter, including graphite irradiation at one of the world’s most powerful test reactors. These activities are essential for reactor materials’ qualification, supplier selection, and licensing readiness.
•Relationships with nuclear industry suppliers remained in active execution for materials, component and services supply, supporting the fabrication of reactor components and the development of fuel supply infrastructure.
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The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.