{"filing":{"accession_number":"0000950157-26-000837","cik":"0000916076","ticker":"MLM","company_name":"MARTIN MARIETTA MATERIALS INC","form":"8-K","filing_date":"2026-08-04","report_date":"2026-08-04","primary_document":"form8-k.htm","primary_document_url":"https://www.sec.gov/Archives/edgar/data/916076/000095015726000837/form8-k.htm"},"events":[{"id":23708,"run_id":21441,"accession_number":"0000950157-26-000837","anchor_item_number":"5.02","event_type":"exec_appointment","event_domain":"governance","is_material":true,"confidence":0.85,"summary":"Michael J. Petro was promoted to Executive Vice President, Chief Financial Officer on August 4, 2026. While the disclosure includes compensatory arrangements (base salary of $750,000, target incentive awards, and a $5,000,000 RSU grant), the principal disclosed action is Petro's appointment to a senior executive role. The appointment of a CFO is material to investors as it affects the company's financial leadership and governance structure.","company_name":"MARTIN MARIETTA MATERIALS INC","ticker":"MLM","filing_date":"2026-08-04","form":"8-K","submitted_at":null,"items":[{"id":24021,"accession_number":"0000950157-26-000837","item_number":"5.02","item_title":"Departure of Directors or Certain Officers; Election","event_type":"exec_appointment","event_domain":"governance","is_material":true,"confidence":0.85,"reasoning":"Michael J. Petro was promoted to Executive Vice President, Chief Financial Officer on August 4, 2026. While the disclosure includes compensatory arrangements (base salary of $750,000, target incentive awards, and a $5,000,000 RSU grant), the principal disclosed action is Petro's appointment to a senior executive role. The appointment of a CFO is material to investors as it affects the company's financial leadership and governance structure.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-08-05T00:28:55.101401+00:00","company_name":"","ticker":null,"filing_date":""}]}],"classifications":[{"id":24021,"accession_number":"0000950157-26-000837","item_number":"5.02","item_title":"Departure of Directors or Certain Officers; Election","event_type":"exec_appointment","event_domain":"governance","is_material":true,"confidence":0.85,"reasoning":"Michael J. Petro was promoted to Executive Vice President, Chief Financial Officer on August 4, 2026. While the disclosure includes compensatory arrangements (base salary of $750,000, target incentive awards, and a $5,000,000 RSU grant), the principal disclosed action is Petro's appointment to a senior executive role. The appointment of a CFO is material to investors as it affects the company's financial leadership and governance structure.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-08-05T00:28:55.101401+00:00","company_name":"MARTIN MARIETTA MATERIALS INC","ticker":"MLM","filing_date":"2026-08-04"}]}