Director Maria Khoury receives 8,451 MPLX (MPLX) common units as award

Rhea-AI Filing Summary

MPLX LP director Maria A. Khoury reported an award of 8,451 Common Units (Limited Partner Interests). The units were acquired as a grant or award at a stated price of $0.00 per unit, bringing her directly held total to 8,451 units.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Khoury Maria A

(Last) (First) (Middle)

C/O MPLX LP

200 E. HARDIN STREET

(Street)

FINDLAY OH 45840

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
MPLX LP [ MPLX ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
03/01/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Units (Limited Partner Interests)	03/01/2026		A		8,451	A	$0	8,451	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

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.

	/s/ Molly R. Benson, Attorney-in-Fact for Maria A. Khoury	03/03/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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FAQ

What insider transaction did MPLX (MPLX) report for Maria A. Khoury?

MPLX LP reported that director Maria A. Khoury acquired 8,451 Common Units. The transaction is classified as a grant, award, or other acquisition, rather than an open-market purchase or sale, and was reported on a Form 4 insider filing.

Was the MPLX (MPLX) unit transaction by Maria A. Khoury a purchase or an award?

The transaction for 8,451 MPLX Common Units reported by Maria A. Khoury is an award or grant, not an open-market purchase. It is coded as a grant, award, or other acquisition with a reported price of $0.00 per unit.

How many MPLX (MPLX) units does Maria A. Khoury hold after this Form 4?

After the reported award, Maria A. Khoury directly holds 8,451 MPLX Common Units. The Form 4 shows these units as directly owned and acquired through a grant or award, with this total reflecting her holdings following the transaction.

What does transaction code A mean in the MPLX (MPLX) Form 4 filing?

In this MPLX Form 4, transaction code A indicates a grant, award, or other acquisition of securities. For Maria A. Khoury, it reflects the issuance of 8,451 Common Units rather than a conventional market purchase or sale.

Is Maria A. Khoury a director of MPLX (MPLX) in this insider report?

Yes. The Form 4 identifies Maria A. Khoury as a director of MPLX LP. The reported transaction shows her receiving 8,451 Common Units as a grant or award, increasing her directly held position in the partnership’s units.