{"schema_version":"secwatch.filing_event.v1","accession":"0000950157-26-000758","form_type":"8-K","ticker":"MLM","cik":"0000916076","company_name":"MARTIN MARIETTA MATERIALS INC","filed_at":"2026-06-29T11:43:18+00:00","discovered_at":"2026-06-29T11:45:01.410273+00:00","generated_at":"2026-06-29T11:45:24.144895+00:00","sec_items":["7.01","9.01"],"event_type":"m_and_a","sentiment":"positive","materiality_score":0.9,"calibrated_materiality_score":0.9,"confidence":"high","headline":"Martin Marietta to acquire Lhoist North America for $13.5B in cash and stock","bullets":["Enterprise value $13.5B: $7B cash + $6.5B stock; expected close H2 2026 subject to regulatory approvals.","LNA 2025A gross sales $1.8B, Adj. EBITDA $786M (45% margin), 94% free cash flow conversion.","Expected ~$85M annual run-rate cost synergies within 2 years; deal accretive to earnings and margins in first year.","LNA controls >2B tons limestone reserves (200+ years useful life), #1 U.S. lime producer.","Berghmans family to own ~15% of MLM post-deal and appoint one director and one observer."],"urls":{"canonical":"https://secwatch.observer/filing/0000950157-26-000758","json":"https://secwatch.observer/filing/0000950157-26-000758.json","markdown":"https://secwatch.observer/filing/0000950157-26-000758.md","text":"https://secwatch.observer/filing/0000950157-26-000758.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/916076/000095015726000758/0000950157-26-000758-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/916076/000095015726000758/form8-k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-29T11:45:24.144895+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"}