{"schema_version":"secwatch.filing_event.v1","accession":"0001558370-23-012026","form_type":"8-K","ticker":"TSEOF","cik":"0001519061","company_name":"Trinseo PLC","filed_at":"2023-07-20T23:59:59+00:00","discovered_at":"2026-05-14T18:03:34.174204+00:00","generated_at":"2026-06-13T05:34:50.656092+00:00","sec_items":["5.02","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.55,"calibrated_materiality_score":0.55,"confidence":"high","headline":"Trinseo restructures ELT; three depart, three assume expanded roles","bullets":["Three ELT members leaving: Andre Lanning (COO), Nicolas Joly, Jean-Luc Béal; effective Aug 1, 2023.","ELT reduced from 12 to 9 members; Francesca Reverberi adds Engineered Materials leadership.","Bregje Roseboom-Van Kessel to lead combined Plastics Solutions & Polystyrene/Feedstocks.","James Ni assumes ownership of marketing and commercial excellence across Trinseo.","Lanning's severance: 1.5x (base salary + target bonus) paid over 18 months; continued benefits."],"urls":{"canonical":"https://secwatch.observer/filing/0001558370-23-012026","json":"https://secwatch.observer/filing/0001558370-23-012026.json","markdown":"https://secwatch.observer/filing/0001558370-23-012026.md","text":"https://secwatch.observer/filing/0001558370-23-012026.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1519061/000155837023012026/0001558370-23-012026-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1519061/000155837023012026/tse-20230720x8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-13T05:34:50.656092+00:00"},"review":{"review_status":"machine_generated","human_reviewed":false,"corrected":false,"correction_note":null,"correction_timestamp":null,"superseded_by":null,"related_filings":[]},"source_grounded_claims":[{"claim_id":"37ade591cc","claim":"Andre Lanning was terminated as Senior Vice President and Chief Operating Officer at Trinseo PLC.","evidence_excerpt":"On July 18, 2023, Trinseo PLC (the “Company”) announced that Andre Lanning, the Company’s Senior Vice President and Chief Operating Officer would be terminated in connection with a reorganization of the Company’s executive leadership team.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1519061/000155837023012026/0001558370-23-012026-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"terminated"},{"label":"Role","value":"Senior Vice President and Chief Operating Officer"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}