---
schema_version: "secwatch.filing_event.v1"
accession: "0001510295-26-000033"
form_type: "8-K"
ticker: "MPC"
cik: "0001510295"
company_name: "Marathon Petroleum Corp"
filed_at: "2026-05-01T23:59:59+00:00"
generated_at: "2026-05-15T00:17:47.282954+00:00"
event_type: "other_material"
sentiment: "negative"
materiality_score: 0.35
calibrated_materiality_score: 0.15
confidence: "high"
source: SEC EDGAR
---

# Marathon Petroleum shareholders reelect directors, reject board declassification and supermajority removal

## Summary
- Maryann T. Mannen, Eileen P. Paterson, J. Michael Stice, John P. Surma elected board directors with >90% of votes cast.
- Ratification of PricewaterhouseCoopers as independent auditor for 2026 passed with 254.4M votes for.
- Advisory say-on-pay on named executive officer compensation approved with 202.1M votes for.
- Board declassification amendment failed; received 206.1M votes for but required 80% of 294.5M outstanding shares.
- Supermajority elimination amendment also failed, receiving 205.8M votes for, short of 80% threshold.

## SEC filing metadata
- accession: 0001510295-26-000033
- form_type: 8-K
- ticker: MPC
- cik: 0001510295
- company_name: Marathon Petroleum Corp
- filed_at: 2026-05-01T23:59:59+00:00
- event_type: other_material
- sentiment: negative
- materiality_score: 0.35
- calibrated_materiality_score: 0.15
- confidence: high
- sec_items: 5.07
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1510295/000151029526000033/0001510295-26-000033-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1510295/000151029526000033/mpc-20260429.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001510295-26-000033
- JSON: https://secwatch.observer/filing/0001510295-26-000033.json
- Plain text: https://secwatch.observer/filing/0001510295-26-000033.txt

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