---
schema_version: "secwatch.filing_event.v1"
accession: "0001510295-25-000038"
form_type: "8-K"
ticker: "MPC"
cik: "0001510295"
company_name: "Marathon Petroleum Corp"
filed_at: "2025-05-06T23:59:59+00:00"
generated_at: "2026-05-22T11:35:05.390993+00:00"
event_type: "earnings"
sentiment: "negative"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Marathon Petroleum posts Q1 net loss of $74M on planned maintenance; adjusted EBITDA falls 40% YoY

## Summary
- Net loss $(74)M ($(0.24)/diluted share) vs net income $937M ($2.58) in Q1 2024.
- Adjusted EBITDA $2.0B vs $3.3B YoY; impacted by $454M planned turnaround costs.
- R&M segment EBITDA fell to $489M ($1.91/bbl) from $1,986M ($8.22/bbl) on lower crack spreads.
- Midstream segment EBITDA up 8% to $1.72B; MPLX agreed to acquire BANGL for $715M.
- Returned $1.3B to shareholders ($1.1B buybacks); $6.7B remaining under repurchase authorization.

## SEC filing metadata
- accession: 0001510295-25-000038
- form_type: 8-K
- ticker: MPC
- cik: 0001510295
- company_name: Marathon Petroleum Corp
- filed_at: 2025-05-06T23:59:59+00:00
- event_type: earnings
- sentiment: negative
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 2.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1510295/000151029525000038/0001510295-25-000038-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1510295/000151029525000038/mpc-20250506.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001510295-25-000038
- JSON: https://secwatch.observer/filing/0001510295-25-000038.json
- Plain text: https://secwatch.observer/filing/0001510295-25-000038.txt

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