{"schema_version":"secwatch.filing_event.v1","accession":"0001510295-25-000002","form_type":"8-K","ticker":"MPC","cik":"0001510295","company_name":"Marathon Petroleum Corp","filed_at":"2025-01-24T23:59:59+00:00","discovered_at":"2026-05-14T18:03:03.840303+00:00","generated_at":"2026-05-27T10:51:52.359695+00:00","sec_items":["5.02"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.3,"calibrated_materiality_score":0.3,"confidence":"high","headline":"Marathon Petroleum director Susan Tomasky to retire at 2025 annual meeting","bullets":["Susan Tomasky notified the Board of her retirement effective after the April 30, 2025 annual meeting.","Her decision was not due to any disagreement with the Company, management, or Board.","She will continue serving until the conclusion of the 2025 annual meeting."],"urls":{"canonical":"https://secwatch.observer/filing/0001510295-25-000002","json":"https://secwatch.observer/filing/0001510295-25-000002.json","markdown":"https://secwatch.observer/filing/0001510295-25-000002.md","text":"https://secwatch.observer/filing/0001510295-25-000002.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1510295/000151029525000002/0001510295-25-000002-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1510295/000151029525000002/mpc-20250120.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-27T10:51:52.359695+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":[{"claim_id":"24680fe4d1","claim":"Susan Tomasky departed as Director at Marathon Petroleum Corp.","evidence_excerpt":"On January 20, 2025, Susan Tomasky notified the Board of Directors (the \"Board\") of Marathon Petroleum Corporation (the “Company”) of her decision to retire from the Board effective upon the conclusion of the Company's 2025 annual meeting of shareholders, to be held April 30, 2025.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1510295/000151029525000002/0001510295-25-000002-index.htm","confidence":1.0,"family_label":"Executive change","details":[{"label":"Action","value":"retire"},{"label":"Role","value":"Director"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}