Gregory S. Floerke - 01 Mar 2026 Form 4 Insider Report for Marathon Petroleum Corp (MPC)

Reporting relationship: Ex VP & COO, MPLX GP LLC
Issuer ticker: MPC
Reported as of: 01 Mar 2026
Net transaction value: -$166,484
SEC form: 4
Accepted by SEC: 03 Mar 2026, 18:52:55 UTC
Prior SEC filing: 16 Dec 2025
Source filing: View source filing
Reporting owner signature: /s/ Molly R. Benson, Attorney-in-Fact for Gregory S. Floerke

Key filing fact

Gregory S. Floerke filed Form 4 for Marathon Petroleum Corp (MPC) on 03 Mar 2026.

Key facts

This page summarizes Gregory S. Floerke's Form 4 filing for Marathon Petroleum Corp (MPC).
4 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 03 Mar 2026, 18:52.

Change

Previous filing in this sequence was filed on 16 Dec 2025.
Current net transaction value: -$166,484.

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 0001313785 Primary reporting owner

Floerke Gregory Scott

Relationship: Ex VP & COO, MPLX GP LLC
Address: C/O MARATHON PETROLEUM CORPORATION, 539 S. MAIN STREET, FINDLAY
Signature: /s/ Molly R. Benson, Attorney-in-Fact for Gregory S. Floerke
Signature date: 03 Mar 2026

Reported non-derivative transactions

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

MPC transaction

Common Stock

Award

Transaction value: $0
Shares: +1,730
Change %: +5.7%
Price: $0.000000
Shares after: 31,838
Date: 01 Mar 2026
Ownership: Direct

MPC transaction

Common Stock

Tax liability

Transaction value: $57,351
Shares: -278
Change %: -0.87%
Price: $206.30
Shares after: 31,560
Date: 02 Mar 2026
Ownership: Direct

MPC transaction

Common Stock

Tax liability

Transaction value: $51,781
Shares: -251
Change %: -0.8%
Price: $206.30
Shares after: 31,309
Date: 02 Mar 2026
Ownership: Direct

MPC transaction

Common Stock

Tax liability

Transaction value: $57,351
Shares: -278
Change %: -0.89%
Price: $206.30
Shares after: 31,031
Date: 02 Mar 2026
Ownership: Direct

MPC holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 737
Date: 01 Mar 2026
Ownership: By 401(k) Plan
Footnotes: F1

^* 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

Reflects the deduction of an administrative fee in the amount of .004 shares and contributions in the amount of 11.268 shares not previously reported pursuant to Rule 16a3(f)(1)(i)(B).

SEC remarks

The Reporting Person is the Executive Vice President and Chief Operating Officer of MPLX GP LLC, a subsidiary of the Issuer.