# Marathon Petroleum president entity: /record/marathon-petroleum.md predicate: president page: /record/marathon-petroleum/president as_of: 2026-11-12 cite: AsOf. "Marathon Petroleum president: Maryann T. Mannen", as of 2024-01-01. Claim clm_5E97614FAAC8, https://asof.is/claim/clm_5E97614FAAC8, accessed 2026-11-12. Source: https://www.sec.gov/Archives/edgar/data/1510295/000151029523000080/0001510295-23-000080-index.htm. As of November 12, 2026, Marathon Petroleum's president on the AsOf record is Maryann T. Mannen, dated January 1, 2024, from a primary source (sec.gov). 1 claim on Marathon Petroleum's president, 1 open and 0 superseded, each dated and sourced; a replaced value is closed with an end date, never deleted. ## Current president What the record asserts on 2026-11-12. - [Marathon Petroleum](/record/marathon-petroleum.md) | president | Maryann T. Mannen | valid 2024-01-01 to present | conf 0.95 | valid | [clm_5E97614FAAC8](/claim/clm_5E97614FAAC8.md) sources: https://www.sec.gov/Archives/edgar/data/1510295/000151029523000080/0001510295-23-000080-index.htm ## Every dated value One claim per line, oldest first. Superseded claims stay visible. - [Marathon Petroleum](/record/marathon-petroleum.md) | president | Maryann T. Mannen | valid 2024-01-01 to present | conf 0.95 | valid | [clm_5E97614FAAC8](/claim/clm_5E97614FAAC8.md) sources: https://www.sec.gov/Archives/edgar/data/1510295/000151029523000080/0001510295-23-000080-index.htm ## Questions this record answers ### What is Marathon Petroleum's current president? Maryann T. Mannen, dated January 1, 2024, from a primary source (sec.gov). The record asserts this claim as of November 12, 2026 (status valid, confidence 0.95). ## Read on - This page: /record/marathon-petroleum/president (markdown: /record/marathon-petroleum/president.md) - Entity twin: /record/marathon-petroleum.md ยท timeline: /timelines/marathon-petroleum.md --- AsOf is a temporal fact ledger: a structured, dated, sourced record of what is true and what changed, built for AI retrieval.