{"schema_version":"secwatch.filing_event.v1","accession":"0000950157-26-000946","form_type":"8-K","ticker":"MLM","cik":"0000916076","company_name":"MARTIN MARIETTA MATERIALS INC","filed_at":"2026-08-24T11:33:53+00:00","discovered_at":"2026-08-24T11:35:00.313707+00:00","generated_at":"2026-08-24T11:35:06.478458+00:00","sec_items":["1.01","2.01","3.02","5.02","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 closes $13.5B Lhoist North America acquisition; adds director","bullets":["Completed LNA acquisition Aug 21, 2026 for ~$7B cash plus 10,953,543 shares valued at $6.5B (total ~$13.5B).","Board expanded to 11; Philipp Niemann, CEO of Lhoist S.A., appointed director effective Aug 21, 2026.","LNA Holding lock-up: 50% of shares released at 12 months, 50% at 24 months; standstill caps ownership at 18%.","LNA adds >2 billion tons of high-quality limestone reserves; Martin Marietta now leading U.S. limestone producer.","Company to provide updated FY2026 revenue and Adjusted EBITDA guidance with Q3 results."],"urls":{"canonical":"https://secwatch.observer/filing/0000950157-26-000946","json":"https://secwatch.observer/filing/0000950157-26-000946.json","markdown":"https://secwatch.observer/filing/0000950157-26-000946.md","text":"https://secwatch.observer/filing/0000950157-26-000946.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/916076/000095015726000946/0000950157-26-000946-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/916076/000095015726000946/form8-k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-08-24T11:35:06.478458+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"}