# clm_5E97614FAAC8

subject: Marathon Petroleum (/record/marathon-petroleum.md)  
predicate: president  
value: Maryann T. Mannen  
valid_from: 2024-01-01  
valid_to: null  
published: 2023-12-21  
recorded: 2026-11-12  
confidence: 0.95  
status: valid  
assertable: true  
superseded_by: null  
last_updated: 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.  
checked: 2026-11-12 · its source page states the value and the date  

> On December 21, 2023, Marathon Petroleum Corporation (the “Company”) announced the appointment of Maryann T. Mannen to serve as President, effective January 1, 2024.

What https://www.sec.gov/Archives/edgar/data/1510295/000151029523000080/0001510295-23-000080-index.htm says, word for word.

## Sources

- https://www.sec.gov/Archives/edgar/data/1510295/000151029523000080/0001510295-23-000080-index.htm (primary, SEC EDGAR 8-K Item 5.02, published 2023-12-21)

---

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