{"schema_version":"secwatch.filing_event.v1","accession":"0000950157-25-000609","form_type":"8-K","ticker":"MLM","cik":"0000916076","company_name":"MARTIN MARIETTA MATERIALS INC","filed_at":"2025-08-04T23:59:59+00:00","discovered_at":"2026-05-14T18:02:46.693483+00:00","generated_at":"2026-05-17T21:42:39.038641+00:00","sec_items":["2.02","7.01","9.01"],"event_type":"m_and_a","sentiment":"positive","materiality_score":0.85,"calibrated_materiality_score":0.85,"confidence":"high","headline":"Martin Marietta swaps cement for Quikrete aggregates plus $450M; raises 2025 EBITDA guidance","bullets":["Agreed to exchange Midlothian cement plant and N. Texas ready-mix assets for Quikrete aggregates (~20M tons/yr) and $450M cash; close expected Q1 2026.","Completed acquisition of Premier Magnesia, LLC, a magnesia-based products producer with operations in NV, NC, IN, PA.","Preliminary Q2 2025 revenue $1.81B, net earnings $328M, Adjusted EBITDA $630M.","Raising full-year 2025 Adjusted EBITDA guidance to $2.30B midpoint, driven by strong H1 and Premier contribution."],"urls":{"canonical":"https://secwatch.observer/filing/0000950157-25-000609","json":"https://secwatch.observer/filing/0000950157-25-000609.json","markdown":"https://secwatch.observer/filing/0000950157-25-000609.md","text":"https://secwatch.observer/filing/0000950157-25-000609.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/916076/000095015725000609/0000950157-25-000609-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/916076/000095015725000609/form8-k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-17T21:42:39.038641+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"}