MPLX Insider Filing: Helms Adds 1,259.684 Units; Holdings 78,108.263

Rhea-AI Filing Summary

Insider transaction reported for MPLX LP (MPLX). Christopher A. Helms, listed as a director of MPLX GP LLC (the issuer's general partner), reported acquiring 1,259.684 common units on 08/15/2025 at a reported price of $0, bringing his beneficial ownership to 78,108.263 common units. The form was signed by an attorney-in-fact on 08/19/2025.

Positive

• Timely disclosure of insider transaction with transaction and signature dates provided
• Clear identification of reporting person and relationship to the issuer (Director of MPLX GP LLC)

Negative

• No explanation provided for the reported price of $0 for the acquired units
• Form lacks context about the source or nature of the units (e.g., grant, distribution, conversion)

Insights

Financial Analyst

TL;DR: Director acquired additional common units at no reported cash price, modest change in beneficial holdings.

The filing documents an acquisition of 1,259.684 common units by Christopher A. Helms on 08/15/2025 at a reported price of $0, increasing his total to 78,108.263 units. The report identifies Helms as a director of MPLX GP LLC, the general partner of MPLX LP. The disclosure is straightforward and routine for insider reporting; the filing does not provide valuation context, source of units, or indicate dilution metrics.

Corporate Governance Expert

TL;DR: Routine Section 16 disclosure showing a director's acquisition; governance role and reporting are clearly stated.

The Form 4 shows compliance with Section 16 reporting: the reporting person is a director of the general partner and filed as a single reporting person. The transaction date (08/15/2025) and signature date (08/19/2025) are provided. The form does not include explanatory details about the nature of the $0 price or any derivative instruments, limiting assessment of compensation or related-party arrangements.

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

OMB APPROVAL

OMB Number:			3235-0287
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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^*

HELMS CHRISTOPHER 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)
08/15/2025

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)	08/15/2025		A		1,259.684	A	$0	78,108.263	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 Christopher A. Helms	08/19/2025
	** 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.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What did Christopher A. Helms report on the MPLX Form 4?

He reported acquiring 1,259.684 common units of MPLX on 08/15/2025, at a reported price of $0, increasing his holdings to 78,108.263 units.

What is Christopher A. Helms' relationship to MPLX?

The filing states he is a director of MPLX GP LLC, which is the general partner that manages MPLX LP.

When was the Form 4 signed and by whom?

The Form 4 was signed on 08/19/2025 by Molly R. Benson, Attorney-in-Fact for Christopher A. Helms.

Does the Form 4 explain why the units were acquired at $0?

No. The filing lists a price of $0 but does not provide an explanation for the $0 price or the nature of the transaction.

Did the Form 4 report any derivative securities?

No. Table II for derivative securities contains no reported transactions or holdings.