Garry L. Peiffer - 14 May 2021 Form 4 Insider Report for MPLX LP (MPLX)

Role: Director
Signature: /s/ Molly R. Benson, Attorney-in-Fact for Garry L. Peiffer
Issuer symbol: MPLX
Transactions as of: 14 May 2021
Net transactions value: $0
Form type: 4
Filing time: 18 May 2021, 11:25:19 UTC
Next filing: 02 Jul 2021
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	+692	+2.4%	$0.000000	29,569	14 May 2021	Direct
holding	MPLX	Common Units (Limited Partner Interests)						68,497	14 May 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.