secwatch.observer — SEC 8-K summary ====================================== Issuer: Terrestrial Energy Inc. /DE/ (IMSR) CIK: 0002019804 Form: 8-K Filed at: 2026-07-31T20:06:01+00:00 Accession: 0002019804-26-000021 Event type: leadership Sentiment: neutral Materiality: 0.30 Item codes: 5.02 LLM model: deepseek-v4-flash:cloud@v2 Director Shawn Matthews resigns from Terrestrial Energy board effective July 27, 2026 -------------------------------------------------------------------------------- - Shawn Matthews resigned from the Board of Directors on July 27, 2026. - Resignation not due to any disagreement with company operations, policies, or practices. - No replacement director has been announced as of the filing date. Source: EDGAR index: https://www.sec.gov/Archives/edgar/data/2019804/000201980426000021/0002019804-26-000021-index.htm Primary doc: https://www.sec.gov/Archives/edgar/data/2019804/000201980426000021/tmb-20260727x8k.htm HTML page: https://secwatch.observer/filing/0002019804-26-000021 License: Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer