secwatch.observer — SEC 8-K summary ====================================== Issuer: Koppers Holdings Inc. (KOP) CIK: 0001315257 Form: 8-K Filed at: 2024-12-09T23:59:59+00:00 Accession: 0000950170-24-134339 Event type: leadership Sentiment: neutral Materiality: 0.35 Item codes: 5.02 LLM model: deepseek-v4-flash:cloud@v2 Koppers SVP & Chief Sustainability Officer Leslie Hyde to retire; transition to Assistant to CEO until March 2025 -------------------------------------------------------------------------------- - Leslie S. Hyde, SVP & Chief Sustainability Officer of Koppers Inc., will retire effective March 31, 2025. - Effective December 9, 2024, Hyde vacates current role and serves as Assistant to the CEO through retirement. - Transition is part of a managed plan; no replacement named in the filing. Source: EDGAR index: https://www.sec.gov/Archives/edgar/data/1315257/000095017024134339/0000950170-24-134339-index.htm Primary doc: https://www.sec.gov/Archives/edgar/data/1315257/000095017024134339/kop-20241205.htm HTML page: https://secwatch.observer/filing/0000950170-24-134339 License: Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer