MPLX (MPLX) director Maria Khoury files insider report with 0 units

Rhea-AI Filing Summary

MPLX LP director Maria A. Khoury filed an initial insider ownership report showing that she currently holds 0 common units of the partnership directly. This filing establishes her baseline beneficial ownership position as of 01/19/2026 and confirms there are no derivative securities, such as options or warrants, reported in her name.

The remarks note that she serves as a director of MPLX GP LLC, the general partner that manages MPLX LP through its directors and executive officers. An attorney-in-fact signed the filing on her behalf under a power of attorney.

SEC Form 3

FORM 3

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

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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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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. Date of Event Requiring Statement (Month/Day/Year)
01/19/2026

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

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

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

5. 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 Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Units (Limited Partner Interests)	0	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

Remarks:

Exhibit List: Exhibit 24 Power of Attorney; 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	01/21/2026
	** 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 5 (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 does Maria A. Khoury report owning in MPLX (MPLX) in this filing?

Maria A. Khoury reports beneficial ownership of 0 common units of MPLX LP, held directly, as shown in Table I of the filing.

What is Maria A. Khoury’s relationship to MPLX LP (MPLX)?

She is identified as a Director of MPLX GP LLC, which is the general partner of MPLX LP and manages the partnership through its directors and executive officers.

Does this MPLX (MPLX) insider filing show any derivative securities for Maria A. Khoury?

No derivative securities are listed in Table II. The filing does not show any options, warrants, or other derivative instruments beneficially owned by Maria A. Khoury.

What date does this MPLX (MPLX) insider ownership statement cover?

The filing lists 01/19/2026 as the date of the event requiring the statement, which is when the reported ownership status is established.

Who signed the MPLX (MPLX) insider filing for Maria A. Khoury?

The document is signed by /s/ Molly R. Benson as Attorney-in-Fact for Maria A. Khoury, acting under a power of attorney.