JOHN P. SURMA - 01 Apr 2025 Form 4 Insider Report for MPLX LP (MPLX)

Role: Director
Signature: /s/ Molly R. Benson, Attorney-in-Fact for John P. Surma
Issuer symbol: MPLX
Transactions as of: 01 Apr 2025
Net transactions value: $0
Form type: 4
Filing time: 03 Apr 2025, 18:14:57 UTC
Previous filing: 18 Feb 2025
Next filing: 02 May 2025
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	MPLX	Common Units (Limited Partner Interests)	Award	$0	+220	+0.28%	$0.000000	80,381	01 Apr 2025	Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Represents the reporting person's second quarter 2025 equity retainer award prorated for the period beginning April 1, 2025 and ending April 30, 2025. As disclosed in MPLX's annual report of Form 10-K for the year ended December 31, 2024, beginning in May 2025, MPLX's non-management directors will receive an annual equity retainer consisting of one grant in the amount of $125,000, generally made on the day following the annual meeting of shareholders of Marathon Petroleum Corporation (the parent company of MPLX's general partner).

Content

Represents the reporting person's second quarter 2025 equity retainer award prorated for the period beginning April 1, 2025 and ending April 30, 2025. As disclosed in MPLX's annual report of Form 10-K for the year ended December 31, 2024, beginning in May 2025, MPLX's non-management directors will receive an annual equity retainer consisting of one grant in the amount of $125,000, generally made on the day following the annual meeting of shareholders of Marathon Petroleum Corporation (the parent company of MPLX's general partner).

Remarks:

The Reporting Person is a Director of MPLX GP LLC, the general partner of the Issuer. The Issuer is managed by the directors and executive officers of MPLX GP LLC.