secwatch.observer — SEC 8-K summary ====================================== Issuer: Trinseo PLC (TSEOF) CIK: 0001519061 Form: 8-K Filed at: 2026-08-14T16:38:22+00:00 Accession: 0001104659-26-096792 Event type: other_material Sentiment: negative Materiality: 0.70 Item codes: 8.01, 9.01 LLM model: deepseek-v4-flash:cloud@v2 Trinseo convenes EGM under Irish law as net assets fall to half or less of called-up share capital -------------------------------------------------------------------------------- - On Aug 7, 2026, Trinseo determined net assets are half or less of its called-up share capital, triggering Irish Companies Act Section 1111. - EGM scheduled for Sept 23, 2026 at 8:45 a.m. EST in Wayne, PA; record date Aug 12, 2026. - No resolutions will be proposed or voted on; directors make no recommendation on measures. - Notice mailed Aug 14, 2026; meeting is procedural to consider possible actions. - Company ticker TSEOQ; Irish-registered PLC with net asset impairment signal. Source: EDGAR index: https://www.sec.gov/Archives/edgar/data/1519061/000110465926096792/0001104659-26-096792-index.htm Primary doc: https://www.sec.gov/Archives/edgar/data/1519061/000110465926096792/tse-20260814x8k.htm HTML page: https://secwatch.observer/filing/0001104659-26-096792 License: Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer