{"schema_version":"secwatch.filing_event.v1","accession":"0000950170-23-048041","form_type":"8-K","ticker":"KOP","cik":"0001315257","company_name":"Koppers Holdings Inc.","filed_at":"2023-09-14T23:59:59+00:00","discovered_at":"2026-05-14T18:03:33.542544+00:00","generated_at":"2026-06-10T17:23:21.320600+00:00","sec_items":["7.01","9.01"],"event_type":"other_material","sentiment":"positive","materiality_score":0.65,"calibrated_materiality_score":0.65,"confidence":"high","headline":"Koppers raises 2023 adjusted EBITDA guidance to $250M-$260M, EPS to $4.30-$4.60","bullets":["Affirms 2023 sales ~$2.1B; adjusted EBITDA guidance raised to $250M-$260M, adjusted EPS to $4.30-$4.60 from $4.40.","Cites volume strength in utility poles, wood preservatives, rail pricing actions, and better CM&C performance.","Reiterates long-term target of $300M adjusted EBITDA by 2025.","Hosts Investor Day in Chicago with CEO, CFO, COO, and CSO presenting strategic plan.","Guidance increase reflects confidence in record quarterly results and progress on 2025 goals."],"urls":{"canonical":"https://secwatch.observer/filing/0000950170-23-048041","json":"https://secwatch.observer/filing/0000950170-23-048041.json","markdown":"https://secwatch.observer/filing/0000950170-23-048041.md","text":"https://secwatch.observer/filing/0000950170-23-048041.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1315257/000095017023048041/0000950170-23-048041-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1315257/000095017023048041/kop-20230914.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-10T17:23:21.320600+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":[],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}