MPLX LP — Director's Dealing 2018

Dec 26, 2018

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MPLX LP (MPLX)
CIK: 0001552000
Period of Report: 2018-12-20

Reporting Person: Heminger Gary R. (Director, Chairman, CEO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2018-12-20	Common Units (Limited Partner Interests)	A	5265	$31.255	Acquired	105984	Direct
2018-12-20	Common Units (Limited Partner Interests)	F	3167	$31.255	Disposed	102817	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Units (Limited Partner Interests)	26750	Indirect
Common Units (Limited Partner Interests)	1576.612	Indirect
Common Units (Limited Partner Interests)	1576.612	Indirect
Common Units (Limited Partner Interests)	1576.612	Indirect
Common Units (Limited Partner Interests)	1576.612	Indirect
Common Units (Limited Partner Interests)	1576.612	Indirect
Common Units (Limited Partner Interests)	1500	Indirect
Common Units (Limited Partner Interests)	95780	Indirect

Footnotes

F1: Adjusted to reflect the fact the tax withholding reported on the Form 4 filed on October 3, 2018 did not occur and adjusted per footnote five below.

F2: By Gary R. Heminger Revocable Trust.

F3: The reporting person disclaims beneficial ownership of these units, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for purposes of Section 16 or for any other purpose.

F4: The units are held in UTMA accounts for the benefit of Mr. Heminger's minor grandchildren. Mr. Heminger is the custodian and maintains investment control over the accounts.

F5: On December 21, 2018 the Reporting Person contributed 95,780 units to a grantor retained annuity trust ("GRAT") for the benefit of himself and his two adult children. These trust holdings consist of those units, which were previously reported as directly owned on prior Forms 4.

F6: By Gary R. Heminger Irrevocable GRAT.