secwatch.observer — SEC 8-K summary ====================================== Issuer: Trinseo PLC (TSEOF) CIK: 0001519061 Form: 8-K Filed at: 2026-03-03T23:59:59+00:00 Accession: 0001104659-26-022537 Event type: regulatory Sentiment: negative Materiality: 1.00 Item codes: 3.01, 9.01 LLM model: deepseek-v4-flash:cloud@v2 NYSE commences delisting proceedings for Trinseo after market cap falls below $15M -------------------------------------------------------------------------------- - Received NYSE notice on March 2, 2026; trading suspended immediately due to average market cap < $15M over 30 days. - Previously disclosed non-compliance: average market cap below $50M and share price below $1.00 in December 2025. - Delisting effective 10 days after NYSE files Form 25; shares may trade on OTC Pink, but no assurance. - Irish stamp duty of 1% applies on trades; DTC will cease clearing trades, requiring direct registration with transfer agent. - Company states delisting does not affect business operations, relationships, or SEC reporting obligations. Source: EDGAR index: https://www.sec.gov/Archives/edgar/data/1519061/000110465926022537/0001104659-26-022537-index.htm Primary doc: https://www.sec.gov/Archives/edgar/data/1519061/000110465926022537/tse-20260302x8k.htm HTML page: https://secwatch.observer/filing/0001104659-26-022537 License: Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer