Gregory Scott Floerke - 06 May 2021 Form 4 Insider Report for MPLX LP (MPLX)

Role: Exec. VP and COO
Signature: /s/ Molly R. Benson, Attorney-in-Fact for Gregory S. Floerke
Issuer symbol: MPLX
Transactions as of: 06 May 2021
Net transactions value: -$67,500
Form type: 4
Filing time: 10 May 2021, 06:58:04 UTC
Next filing: 10 Nov 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)	Sale	$67,500	-2,500	-2.9%	$27.00	83,923	06 May 2021	Direct	F1

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

Explanation of Responses:

Id	Content
F1	The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 10,2020.

Remarks:

The Reporting Person is the Executive Vice President and Chief Operating Officer of MPLX GP LLC, the general partner of the Issuer. The Issuer is managed by the directors and executive officers of MPLX GP LLC.