{"filing":{"accession_number":"0001193125-26-346914","cik":"0000916076","ticker":"MLM","company_name":"MARTIN MARIETTA MATERIALS INC","form":"8-K","filing_date":"2026-08-12","report_date":"2026-08-11","primary_document":"d149482d8k.htm","primary_document_url":"https://www.sec.gov/Archives/edgar/data/916076/000119312526346914/d149482d8k.htm"},"events":[{"id":27251,"run_id":24823,"accession_number":"0001193125-26-346914","anchor_item_number":"1.01","event_type":"debt_issuance","event_domain":"financial","is_material":true,"confidence":0.98,"summary":"Martin Marietta entered into an underwriting agreement on August 11, 2026, to issue $5.5 billion in aggregate principal amount of senior notes across five tranches (2029, 2032, 2034, 2036, and 2056 maturities) with interest rates ranging from 4.850% to 6.375%. The proceeds are earmarked to fund the acquisition of Lhoist North America.","company_name":"MARTIN MARIETTA MATERIALS INC","ticker":"MLM","filing_date":"2026-08-12","form":"8-K","submitted_at":null,"items":[{"id":28694,"accession_number":"0001193125-26-346914","item_number":"1.01","item_title":null,"event_type":"debt_issuance","event_domain":"financial","is_material":true,"confidence":0.98,"reasoning":"Martin Marietta entered into an underwriting agreement on August 11, 2026, to issue $5.5 billion in aggregate principal amount of senior notes across five tranches (2029, 2032, 2034, 2036, and 2056 maturities). This is a creation of new direct financial obligations disclosed under Item 1.01. The press release confirms the pricing and notes that proceeds will fund the acquisition of Lhoist North America, making this a material capital-raising event.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-08-12T20:25:56.479736+00:00","company_name":"","ticker":null,"filing_date":""},{"id":28695,"accession_number":"0001193125-26-346914","item_number":"7.01","item_title":null,"event_type":"debt_issuance","event_domain":"financial","is_material":true,"confidence":0.95,"reasoning":"Martin Marietta announced the pricing of $5.5 billion in aggregate principal amount of Senior Notes across five tranches (2029, 2032, 2034, 2036, and 2056 maturities) with interest rates ranging from 4.850% to 6.375%. The press release explicitly states the pricing terms, maturity dates, and interest rates for each tranche. This is a material creation of direct financial obligations disclosed via Item 7.01 (Regulation FD Disclosure) with the press release attached as Exhibit 99.1, and the proceeds are earmarked for the Lhoist North America acquisition financing.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-08-12T20:25:56.479736+00:00","company_name":"","ticker":null,"filing_date":""}]}],"classifications":[{"id":28694,"accession_number":"0001193125-26-346914","item_number":"1.01","item_title":null,"event_type":"debt_issuance","event_domain":"financial","is_material":true,"confidence":0.98,"reasoning":"Martin Marietta entered into an underwriting agreement on August 11, 2026, to issue $5.5 billion in aggregate principal amount of senior notes across five tranches (2029, 2032, 2034, 2036, and 2056 maturities). This is a creation of new direct financial obligations disclosed under Item 1.01. The press release confirms the pricing and notes that proceeds will fund the acquisition of Lhoist North America, making this a material capital-raising event.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-08-12T20:25:56.479736+00:00","company_name":"MARTIN MARIETTA MATERIALS INC","ticker":"MLM","filing_date":"2026-08-12"},{"id":28695,"accession_number":"0001193125-26-346914","item_number":"7.01","item_title":null,"event_type":"debt_issuance","event_domain":"financial","is_material":true,"confidence":0.95,"reasoning":"Martin Marietta announced the pricing of $5.5 billion in aggregate principal amount of Senior Notes across five tranches (2029, 2032, 2034, 2036, and 2056 maturities) with interest rates ranging from 4.850% to 6.375%. The press release explicitly states the pricing terms, maturity dates, and interest rates for each tranche. This is a material creation of direct financial obligations disclosed via Item 7.01 (Regulation FD Disclosure) with the press release attached as Exhibit 99.1, and the proceeds are earmarked for the Lhoist North America acquisition financing.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-08-12T20:25:56.479736+00:00","company_name":"MARTIN MARIETTA MATERIALS INC","ticker":"MLM","filing_date":"2026-08-12"}]}