Shawn M. Lyon - 28 Aug 2026 Form 4 Insider Report for Marathon Petroleum Corp (MPC)

Reporting relationship: SVP Log & Storage, MPLX GP LLC
Issuer ticker: MPC
Reported as of: 28 Aug 2026
Net transaction value: -$532,367
SEC form: 4
Accepted by SEC: 01 Sep 2026, 16:40:45 UTC
Prior SEC filing: 17 Aug 2026
Source filing: View source filing
Reporting owner signature: /s/ Molly R. Benson, Attorney-in-Fact for Shawn M. Lyon

Key filing fact

Shawn M. Lyon filed Form 4 for Marathon Petroleum Corp (MPC) on 01 Sep 2026.

Key facts

This page summarizes Shawn M. Lyon's Form 4 filing for Marathon Petroleum Corp (MPC).
2 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 01 Sep 2026, 16:40.

Change

Previous filing in this sequence was filed on 17 Aug 2026.
Current net transaction value: -$532,367.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001948454 Primary reporting owner

Lyon Shawn M

Relationship: SVP Log & Storage, MPLX GP LLC
Address: C/O MARATHON PETROLEUM CORPORATION, 539 S. MAIN STREET, FINDLAY
Signature: /s/ Molly R. Benson, Attorney-in-Fact for Shawn M. Lyon
Signature date: 01 Sep 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

MPC transaction

Common Stock

Sale

Transaction value: $156,617
Shares: -425
Change %: -3.4%
Price: $368.51
Shares after: 12,194
Date: 28 Aug 2026
Ownership: Direct
Footnotes: F1

MPC transaction

Common Stock

Sale

Transaction value: $375,750
Shares: -1,000
Change %: -8.2%
Price: $375.75
Shares after: 11,194
Date: 31 Aug 2026
Ownership: Direct

MPC holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 2,939
Date: 28 Aug 2026
Ownership: By 401(k) Plan

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 1 footnote

Footnote F1

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $368.43 to $368.53. The reporting person undertakes to provide to Marathon Petroleum Corporation, any security holder of Marathon Petroleum Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in footnote 1 to this Form 4.

SEC remarks

The Reporting Person is the Senior Vice President, Logistics and Storage of MPLX GP LLC, a subsidiary of the Issuer.