Marathon Petroleum officer plans 570-share sale

Marathon Petroleum Corp (MPC) received a notice that Erin M. Brzezinski intends to sell 570 shares of Marathon Petroleum common stock under Rule 144 through Fidelity Brokerage Services LLC on or after 08/27/2026 on the NYSE.

Rhea-AI Filing Summary

Marathon Petroleum Corp (MPC) received a notice that Erin M. Brzezinski intends to sell 570 shares of Marathon Petroleum common stock under Rule 144 through Fidelity Brokerage Services LLC on or after 08/27/2026 on the NYSE. The shares derive from restricted stock vesting awards of 373 shares on 03/01/2024 and 197 shares on 03/01/2025 received as compensation.

Key Figures

Shares proposed to be sold: 570 shares of common stock Aggregate market value: $206,790.30 Shares from 03/01/2024 restricted stock vesting: 373 shares +2 more

5 metrics

Shares proposed to be sold 570 shares of common stock Planned sale under Rule 144 through Fidelity Brokerage Services LLC

Aggregate market value $206,790.30 Value associated with 570 shares of Marathon Petroleum Corp common stock

Shares from 03/01/2024 restricted stock vesting 373 shares Restricted stock vesting on 03/01/2024 described as compensation from issuer

Shares from 03/01/2025 restricted stock vesting 197 shares Restricted stock vesting on 03/01/2025 described as compensation from issuer

Proposed sale date 08/27/2026 Planned sale date for 570 shares on the NYSE

Key Terms

Rule 144, Restricted Stock Vesting, attorney-in-fact

3 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

Restricted Stock Vesting financial

"Common | 03/01/2024 | Restricted Stock Vesting | Issuer"

Restricted stock vesting is the timetable and conditions under which shares granted to employees or insiders become fully owned and can be sold, typically requiring continued work or meeting performance goals. It matters to investors because large blocks of shares can become tradable at once, which can change share supply and price, and because vesting aligns insiders’ incentives with the company’s long‑term performance—think of it like a timed unlock that both rewards and locks in key people.

attorney-in-fact regulatory

"as attorney-in-fact for Erin Brzezinski"

An attorney-in-fact is the person or entity given legal authority through a power of attorney to act on behalf of another for specific tasks, such as signing documents, voting shares, or handling transactions. For investors, this matters because it lets a trusted representative make timely decisions or complete paperwork when the owner cannot, much like handing keys to someone to run errands on your behalf—so checks on scope and limits of that authority are important.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does the Form 144 filing for MPC disclose about Erin M. Brzezinski?

It discloses that Erin M. Brzezinski plans to sell 570 shares of Marathon Petroleum Corp common stock under Rule 144 through Fidelity Brokerage Services LLC. The filing identifies her as an officer of Marathon Petroleum Corp.

How many MPC shares are covered by this Form 144 notice?

The notice covers up to 570 shares of Marathon Petroleum Corp common stock. These shares are planned to be sold through Fidelity Brokerage Services LLC on the NYSE under Rule 144.

What is the aggregate market value of the MPC shares in this Form 144?

The Form 144 states an aggregate market value of $206,790.30 for the 570 shares of Marathon Petroleum Corp common stock proposed to be sold through Fidelity Brokerage Services LLC.

When were the MPC shares to be sold by Erin M. Brzezinski originally acquired?

The shares come from restricted stock vesting awards of 373 shares acquired on 03/01/2024 and 197 shares acquired on 03/01/2025, both described as compensation from the issuer.

When is the proposed sale date for the MPC shares in this Form 144?

The filing lists a proposed sale date of 08/27/2026 for the 570 shares of Marathon Petroleum Corp common stock to be sold on the NYSE through Fidelity Brokerage Services LLC.

Who is executing the Form 144 for Erin M. Brzezinski related to MPC?

The Form 144 is signed by Daniel Tucci as a duly authorized representative of Fidelity Brokerage Services LLC, acting as attorney-in-fact for Erin Brzezinski in connection with the proposed sale of MPC shares.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 08/27/2026 - 09:58 AM Accepted by SEC EDGAR 08/27/2026 - 09:58 AM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0002008021
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	Marathon Petroleum Corp
SEC File Number	001-35054
Address of Issuer	539 SOUTH MAIN STREET FINDLAY OHIO 45840-3229
Phone	419-422-2121
Name of Person for Whose Account the Securities are To Be Sold	Brzezinski Erin M
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917	570	206790.30	280824763	08/27/2026	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	03/01/2024	Restricted Stock Vesting	Issuer			373	03/01/2024	Compensation
Common	03/01/2025	Restricted Stock Vesting	Issuer			197	03/01/2025	Compensation

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Nothing to Report

144: Remarks and Signature

Remarks
Date of Notice	08/27/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Daniel Tucci, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Erin Brzezinski
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)