---
schema_version: "secwatch.filing_event.v1"
accession: "0001510295-25-000032"
form_type: "8-K"
ticker: "MPC"
cik: "0001510295"
company_name: "Marathon Petroleum Corp"
filed_at: "2025-04-30T23:59:59+00:00"
generated_at: "2026-05-23T02:16:12.395127+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.55
calibrated_materiality_score: 0.55
confidence: "high"
source: SEC EDGAR
---

# Marathon Petroleum EVP Refining Timothy Aydt to retire; Mike Henschen named successor

## Summary
- Timothy J. Aydt, EVP Refining, to retire effective September 2, 2025 after over 40 years of service.
- Mike Henschen appointed as EVP Refining, effective June 1, 2025.
- Aydt will remain with Marathon Petroleum in a non-executive role from June 1 until his retirement.

## SEC filing metadata
- accession: 0001510295-25-000032
- form_type: 8-K
- ticker: MPC
- cik: 0001510295
- company_name: Marathon Petroleum Corp
- filed_at: 2025-04-30T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.55
- calibrated_materiality_score: 0.55
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1510295/000151029525000032/0001510295-25-000032-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1510295/000151029525000032/mpc-20250428.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001510295-25-000032
- JSON: https://secwatch.observer/filing/0001510295-25-000032.json
- Plain text: https://secwatch.observer/filing/0001510295-25-000032.txt

## Key facts
- Executive change
  Timothy J. Aydt departed as Executive Vice President, Refining at Marathon Petroleum Corp.
  - Action: retire
  - Role: Executive Vice President, Refining
  source text: Timothy J. Aydt, Executive Vice President, Refining, of Marathon Petroleum Corporation (the “Company”), notified the Company of his intention to retire from the Company, following over 40 years of service, effective September 2, 2025.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1510295/000151029525000032/0001510295-25-000032-index.htm
- Executive change
  Mike Henschen was appointed as Executive Vice President, Refining at Marathon Petroleum Corp.
  - Action: appointed
  - Role: Executive Vice President, Refining
  source text: The Company has announced that Mike Henschen will succeed Mr. Aydt as Executive Vice President, Refining, effective June 1, 2025.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1510295/000151029525000032/0001510295-25-000032-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.