Garry L. Peiffer - Jul 1, 2021 Form 4 Insider Report for MPLX LP (MPLX)

Role: Director
Signature: /s/ Molly R. Benson, Attorney-in-Fact for Garry L. Peiffer
Stock symbol: MPLX
Transactions as of: Jul 1, 2021
Transactions value $: $0
Form type: 4
Date filed: 7/2/2021, 05:20 PM
Previous filing: May 18, 2021
Next filing: Aug 17, 2021

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	MPLX	Common Units (Limited Partner Interests)	Award	$0	+922	+3.12%	$0.00	30.5K	Jul 1, 2021	Direct
holding	MPLX	Common Units (Limited Partner Interests)						68.5K	Jul 1, 2021	By Revocable Trust	F1

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

Explanation of Responses:

Id	Content
F1	By Garry L. Peiffer Revocable Trust.

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.