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[Form 4] MPLX LP Insider Trading Activity

Filing Impact
(Low)
Filing Sentiment
(Neutral)
Form Type
4
Rhea-AI Filing Summary

Insider acquisition recorded: On 08/25/2025 Ray N. Walker Jr., a director of MPLX GP LLC (the general partner of MPLX LP), was reported acquiring 1,677.632 common units of MPLX at a stated price of $0. Following the transaction, he beneficially owns 1,677.632 units. The filing is signed by an attorney-in-fact on behalf of Mr. Walker.

Acquisto da parte di un insider registrato: In data 25/08/2025 Ray N. Walker Jr., membro del consiglio di amministrazione di MPLX GP LLC (la socia accomandataria di MPLX LP), 猫 stato segnalato come acquirente di 1.677,632 quote ordinarie di MPLX a un prezzo dichiarato di $0. A seguito dell'operazione, risulta titolare effettivo di 1.677,632 quote. La comunicazione 猫 stata firmata da un procuratore speciale per conto del sig. Walker.

Registro de adquisici贸n por parte de un insider: El 25/08/2025 Ray N. Walker Jr., director de MPLX GP LLC (la socia general de MPLX LP), figura informado como adquirente de 1.677,632 unidades ordinarias de MPLX a un precio declarado de $0. Tras la operaci贸n, posee de forma beneficiaria 1.677,632 unidades. La presentaci贸n fue firmada por un apoderado en nombre del Sr. Walker.

鞛勳洂 雮措秬鞛� 毵れ瀰 鞁犼碃: 2025雲� 8鞗� 25鞚�, MPLX LP鞚� 齑濌磩靷洂鞚� MPLX GP LLC鞚� 鞚挫偓 Ray N. Walker Jr.臧� MPLX鞚� 1,677.632 氤错喌雼渼毳� 鞁犼碃霅� 臧�瓴� $0鞐� 旆摑頃� 瓴冹溂搿� 氤搓碃霅橃棃鞀惦媹雼�. 瓯半灅 頉� 攴鸽姅 1,677.632 雼渼毳� 鞁れ鞝侅溂搿� 氤挫湢頃橁碃 鞛堨姷雼堧嫟. 頃措嫻 靹滊電� Walker 鞌ゼ 雽�鞁犿暣 氩曥爼雽�毽澑鞚� 靹滊獏頄堨姷雼堧嫟.

Acquisition par un initi茅 enregistr茅e : Le 25/08/2025, Ray N. Walker Jr., administrateur de MPLX GP LLC (associ茅 commandit茅 de MPLX LP), a 茅t茅 d茅clar茅 acqu茅reur de 1 677,632 unit茅s ordinaires de MPLX au prix indiqu茅 de 0 $. 脌 la suite de la transaction, il d茅tient 脿 titre b茅n茅ficiaire 1 677,632 unit茅s. Le dossier a 茅t茅 sign茅 par un mandataire au nom de M. Walker.

Erwerb durch Insider verzeichnet: Am 25.08.2025 wurde gemeldet, dass Ray N. Walker Jr., ein Direktor von MPLX GP LLC (dem Komplement盲r von MPLX LP), 1.677,632 Stammanteile von MPLX zu einem angegebenen Preis von $0 erworben hat. Nach der Transaktion besitzt er wirtschaftlich 1.677,632 Anteile. Die Meldung wurde von einem Bevollm盲chtigten im Namen von Herrn Walker unterzeichnet.

Positive
  • Director acquisition disclosed 鈥� Ray N. Walker Jr. acquired 1,677.632 common units, aligning management interests with unitholders
Negative
  • None.

Insights

TL;DR: Director received a grant of 1,677.632 MPLX units at no cash cost, a small insider acquisition that is informational but not materially market-moving.

The filing shows a non-derivative acquisition coded A for 1,677.632 common units at a price of $0, suggesting a grant or distribution rather than an open-market purchase. The absolute size is small relative to typical LP public float, so immediate valuation or liquidity impact is negligible. Disclosure clarifies the reporting person is a director of the general partner, aligning governance and unit ownership.

TL;DR: Director ownership alignment indicated by unit grant; routine governance disclosure with limited investor impact.

The report identifies Ray N. Walker Jr. as a director of MPLX GP LLC and reports a direct beneficial holding of 1,677.632 units acquired on 08/25/2025 at a stated price of $0. This appears to be standard director compensation or internal allocation. The filing is complete with signature via attorney-in-fact, and no derivative positions or dispositions are reported. Materiality for investors is low.

Acquisto da parte di un insider registrato: In data 25/08/2025 Ray N. Walker Jr., membro del consiglio di amministrazione di MPLX GP LLC (la socia accomandataria di MPLX LP), 猫 stato segnalato come acquirente di 1.677,632 quote ordinarie di MPLX a un prezzo dichiarato di $0. A seguito dell'operazione, risulta titolare effettivo di 1.677,632 quote. La comunicazione 猫 stata firmata da un procuratore speciale per conto del sig. Walker.

Registro de adquisici贸n por parte de un insider: El 25/08/2025 Ray N. Walker Jr., director de MPLX GP LLC (la socia general de MPLX LP), figura informado como adquirente de 1.677,632 unidades ordinarias de MPLX a un precio declarado de $0. Tras la operaci贸n, posee de forma beneficiaria 1.677,632 unidades. La presentaci贸n fue firmada por un apoderado en nombre del Sr. Walker.

鞛勳洂 雮措秬鞛� 毵れ瀰 鞁犼碃: 2025雲� 8鞗� 25鞚�, MPLX LP鞚� 齑濌磩靷洂鞚� MPLX GP LLC鞚� 鞚挫偓 Ray N. Walker Jr.臧� MPLX鞚� 1,677.632 氤错喌雼渼毳� 鞁犼碃霅� 臧�瓴� $0鞐� 旆摑頃� 瓴冹溂搿� 氤搓碃霅橃棃鞀惦媹雼�. 瓯半灅 頉� 攴鸽姅 1,677.632 雼渼毳� 鞁れ鞝侅溂搿� 氤挫湢頃橁碃 鞛堨姷雼堧嫟. 頃措嫻 靹滊電� Walker 鞌ゼ 雽�鞁犿暣 氩曥爼雽�毽澑鞚� 靹滊獏頄堨姷雼堧嫟.

Acquisition par un initi茅 enregistr茅e : Le 25/08/2025, Ray N. Walker Jr., administrateur de MPLX GP LLC (associ茅 commandit茅 de MPLX LP), a 茅t茅 d茅clar茅 acqu茅reur de 1 677,632 unit茅s ordinaires de MPLX au prix indiqu茅 de 0 $. 脌 la suite de la transaction, il d茅tient 脿 titre b茅n茅ficiaire 1 677,632 unit茅s. Le dossier a 茅t茅 sign茅 par un mandataire au nom de M. Walker.

Erwerb durch Insider verzeichnet: Am 25.08.2025 wurde gemeldet, dass Ray N. Walker Jr., ein Direktor von MPLX GP LLC (dem Komplement盲r von MPLX LP), 1.677,632 Stammanteile von MPLX zu einem angegebenen Preis von $0 erworben hat. Nach der Transaktion besitzt er wirtschaftlich 1.677,632 Anteile. Die Meldung wurde von einem Bevollm盲chtigten im Namen von Herrn Walker unterzeichnet.

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
Estimated average burden
hours per response: 0.5
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*
Walker Ray N JR
(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)
08/25/2025
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) 08/25/2025 A 1,677.632 A $0 1,677.632 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 Ray N. Walker Jr. 08/27/2025
** 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.

Source:

FAQ

What did Ray N. Walker Jr. report on the MPLX (MPLX) Form 4?

The Form 4 reports an acquisition on 08/25/2025 of 1,677.632 common units at a stated price of $0, leaving total beneficial ownership at 1,677.632 units.

Does the Form 4 show any dispositions or derivative transactions for MPLX?

No. The filing lists only a non-derivative acquisition and shows no derivative securities or dispositions.

What is the reporting person's relationship to MPLX in this filing?

The reporting person, Ray N. Walker Jr., is listed as a Director of MPLX GP LLC, the general partner that manages the issuer.

Was the Form 4 signed and when was it filed?

The form includes a signature by an attorney-in-fact, Molly R. Benson, dated 08/27/2025.

Does the $0 price indicate an open-market purchase?

The filing states a price of $0, which is consistent with a grant or internal allocation; the document does not describe an open-market purchase.
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NYSE:MPLX

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#289 Ranked by Market Cap
#382 Ranked by Dividends

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MPLX Latest SEC Filings

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[Form 4] MPLX LP Insider Trading Activity
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[Form 4] MPLX LP Insider Trading Activity
Aug 19, 2025
[Form 4] MPLX LP Insider Trading Activity

MPLX Stock Data

51.29B
370.01M
63.69%
23.87%
0.75%
Oil & Gas Midstream
Pipe Lines (no Natural Gas)
United States
FINDLAY