# clm_9FC90B21982B

subject: Marathon Petroleum (/record/marathon-petroleum.md)  
predicate: board_member  
value: Maryann T. Mannen  
valid_from: 2024-08-01  
valid_to: null  
published: 2024-05-13  
recorded: 2026-11-12  
confidence: 0.95  
status: valid  
assertable: true  
superseded_by: null  
last_updated: 2026-11-12  
cite: AsOf. "Marathon Petroleum board member: Maryann T. Mannen", as of 2024-08-01. Claim clm_9FC90B21982B, https://asof.is/claim/clm_9FC90B21982B, accessed 2026-11-13. Source: https://www.sec.gov/Archives/edgar/data/1510295/000151029524000052/0001510295-24-000052-index.htm.  
checked: 2026-11-12 · its source page states the value and the date, as read by an AI model  

> today announced its leadership transition plan, with all positions effective August 1, 2024. At that time, MPC President Maryann T. Mannen will succeed Michael J. Hennigan as Chief Executive Officer and will join the Board of Directors;

What https://www.sec.gov/Archives/edgar/data/1510295/000151029524000052/0001510295-24-000052-index.htm says, word for word.

## Sources

- https://www.sec.gov/Archives/edgar/data/1510295/000151029524000052/0001510295-24-000052-index.htm (primary, SEC EDGAR 8-K Item 5.02, published 2024-05-13)

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