# Marathon Petroleum CEO

entity: /record/marathon-petroleum.md  
predicate: ceo  
page: /record/marathon-petroleum/ceo  
as_of: 2026-11-09  
cite: AsOf. "Marathon Petroleum ceo: Maryann T. Mannen", as of 2024-08-01. Claim clm_1F49E900CC4E, https://asof.is/claim/clm_1F49E900CC4E, accessed 2026-11-09. Source: https://www.sec.gov/Archives/edgar/data/1510295/000151029526000023/mpc-20260316.htm.  

As of November 9, 2026, Marathon Petroleum's CEO on the AsOf record is Maryann T. Mannen, dated August 1, 2024, from a primary source (sec.gov).

1 claim on Marathon Petroleum's CEO, 1 open and 0 superseded, each dated and sourced; a replaced value is closed with an end date, never deleted.

## Current CEO

What the record asserts on 2026-11-09.

- [Marathon Petroleum](/record/marathon-petroleum.md) | ceo | Maryann T. Mannen | valid 2024-08-01 to present | conf 0.95 | valid | [clm_1F49E900CC4E](/claim/clm_1F49E900CC4E.md)
  sources: https://www.sec.gov/Archives/edgar/data/1510295/000151029526000023/mpc-20260316.htm

## Every dated value

One claim per line, oldest first. Superseded claims stay visible.

- [Marathon Petroleum](/record/marathon-petroleum.md) | ceo | Maryann T. Mannen | valid 2024-08-01 to present | conf 0.95 | valid | [clm_1F49E900CC4E](/claim/clm_1F49E900CC4E.md)
  sources: https://www.sec.gov/Archives/edgar/data/1510295/000151029526000023/mpc-20260316.htm

## Questions this record answers

### What is Marathon Petroleum's current CEO?

Maryann T. Mannen, dated August 1, 2024, from a primary source (sec.gov). The record asserts this claim as of November 9, 2026 (status valid, confidence 0.95).


## Read on

- This page: /record/marathon-petroleum/ceo (markdown: /record/marathon-petroleum/ceo.md)
- Entity twin: /record/marathon-petroleum.md · timeline: /timelines/marathon-petroleum.md
- Every company's CEO: /facts/ceo.md

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AsOf is a temporal fact ledger: a structured, dated, sourced record of what is true and what changed, built for AI retrieval.