{"schema_version":"secwatch.filing_event.v1","accession":"0000950157-26-000549","form_type":"8-K","ticker":"MLM","cik":"0000916076","company_name":"MARTIN MARIETTA MATERIALS INC","filed_at":"2026-04-27T23:59:59+00:00","discovered_at":"2026-05-14T18:02:33.930137+00:00","generated_at":"2026-05-15T04:09:04.382337+00:00","sec_items":["5.02","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.5,"confidence":"high","headline":"Martin Marietta appoints Christopher Samborski as EVP & COO effective May 1, 2026","bullets":["Samborski previously President of West & Specialties; Kirk Light assumes those divisions.","Base salary $775,000; target annual incentive 100% of base; LTIP target 260% of base.","One-time RSU grant of $5M, vesting ratably on 6th, 7th, and 8th anniversaries.","Severance: 3x base salary plus target bonus on termination without cause or good reason.","Employment agreement includes 3-year post-termination non-compete and non-solicitation."],"urls":{"canonical":"https://secwatch.observer/filing/0000950157-26-000549","json":"https://secwatch.observer/filing/0000950157-26-000549.json","markdown":"https://secwatch.observer/filing/0000950157-26-000549.md","text":"https://secwatch.observer/filing/0000950157-26-000549.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/916076/000095015726000549/0000950157-26-000549-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/916076/000095015726000549/form8-k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-15T04:09:04.382337+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"}