{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-26-346914","form_type":"8-K","ticker":"MLM","cik":"0000916076","company_name":"MARTIN MARIETTA MATERIALS INC","filed_at":"2026-08-12T20:19:50+00:00","discovered_at":"2026-08-12T20:21:00.314220+00:00","generated_at":"2026-08-12T20:21:27.647563+00:00","sec_items":["1.01","7.01","9.01"],"event_type":"debt","sentiment":"neutral","materiality_score":0.75,"calibrated_materiality_score":0.75,"confidence":"high","headline":"Martin Marietta prices $5.5B multi-tranche senior notes to fund Lhoist acquisition","bullets":["$5.5B aggregate principal across five tranches: $750M 4.850% 2029, $1.25B 5.200% 2032, $1.0B 5.400% 2034, $1.5B 5.625% 2036, $1.0B 6.375% 2056.","Net proceeds, plus $1.5B term loan, to pay cash consideration for Lhoist North America acquisition.","Priced Aug 11, 2026; expected closing Q3 2026 with customary conditions.","Underwriters: Goldman Sachs, J.P. Morgan, Deutsche Bank, Truist Securities.","Notes issued at 99.936% to 99.660% of par; semiannual interest payments."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-26-346914","json":"https://secwatch.observer/filing/0001193125-26-346914.json","markdown":"https://secwatch.observer/filing/0001193125-26-346914.md","text":"https://secwatch.observer/filing/0001193125-26-346914.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/916076/000119312526346914/0001193125-26-346914-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/916076/000119312526346914/d149482d8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-08-12T20:21:27.647563+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"}