{"schema_version":"secwatch.filing_event.v1","accession":"0000950170-24-014607","form_type":"8-K","ticker":"KOP","cik":"0001315257","company_name":"Koppers Holdings Inc.","filed_at":"2024-02-13T23:59:59+00:00","discovered_at":"2026-05-14T18:03:23.736552+00:00","generated_at":"2026-06-06T03:08:47.522591+00:00","sec_items":["5.02","9.01"],"event_type":"leadership","sentiment":"positive","materiality_score":0.3,"calibrated_materiality_score":0.3,"confidence":"high","headline":"Koppers expands board to 10, elects Nishan Vartanian as director","bullets":["Board increased from nine to ten members; Vartanian elected effective Feb 13, 2024.","Vartanian is Chairman and CEO of MSA Safety Incorporated, a safety products and software firm.","He has served as MSA CEO since May 2018 and Chairman since 2020.","Vartanian will stand for election at the 2024 Annual Meeting; committee assignments pending."],"urls":{"canonical":"https://secwatch.observer/filing/0000950170-24-014607","json":"https://secwatch.observer/filing/0000950170-24-014607.json","markdown":"https://secwatch.observer/filing/0000950170-24-014607.md","text":"https://secwatch.observer/filing/0000950170-24-014607.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1315257/000095017024014607/0000950170-24-014607-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1315257/000095017024014607/kop-20240213.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-06T03:08:47.522591+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":"81ddcd15cb","claim":"Nishan J. Vartanian was elected as director at Koppers Holdings Inc..","evidence_excerpt":"On February 13, 2024, the Board of Directors of Koppers Holdings Inc. (the “Company”) increased the size of the Board of Directors (the “Board”) from nine to ten directors and elected Nishan J. Vartanian as a director of the Company.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1315257/000095017024014607/0000950170-24-014607-index.htm","confidence":1.0,"family_label":"Executive change","details":[{"label":"Action","value":"elected"},{"label":"Role","value":"director"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}