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[Form 4] MPLX LP Insider Trading Activity

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

The filing reports that Christine S. Breves, a director of MPLX GP LLC (the general partner of MPLX LP), acquired 213.782 common units of MPLX on 08/15/2025 at a reported price of $0. After the transaction she beneficially owned 11,388.941 common units. The form indicates Breves files as a reporting person and was signed on behalf of Breves by Molly R. Benson, Attorney-in-Fact, on 08/19/2025.

La comunicazione riporta che Christine S. Breves, amministratrice di MPLX GP LLC (socio accomandatario di MPLX LP), ha acquistato 213.782 quote ordinarie di MPLX il 15/08/2025 a un prezzo dichiarato di $0. Dopo l’operazione deteneva a titolo beneficiario 11.388.941 quote ordinarie. Il modulo indica che Breves presenta la dichiarazione come persona soggetta all’obbligo di segnalazione ed è stato firmato per suo conto da Molly R. Benson, procuratrice, in data 19/08/2025.

El informe indica que Christine S. Breves, directora de MPLX GP LLC (la socia general de MPLX LP), adquirió 213.782 unidades comunes de MPLX el 15/08/2025 a un precio declarado de $0. Tras la operación, poseía de forma beneficiaria 11.388.941 unidades comunes. El formulario señala que Breves presenta la notificación como persona informante y fue firmado en su nombre por Molly R. Benson, apoderada, el 19/08/2025.

ì‹ ê³ ì„œì— ë”°ë¥´ë©� MPLX GP LLC(MLPX LPì� ì¼ë°˜ 파트ë„�) ì´ì‚¬ì� Christine S. Brevesê°€ 2025-08-15ì—� MPLX 보통ì£� 213.782ì£�ë¥� ì‹ ê³ ë� ê°€ê²� $0ì—� ì·¨ë“했습니다. 거래 í›� 그녀ëŠ� 11,388.941ì£�ë¥� 실질ì ìœ¼ë¡� 보유하고 있었습니ë‹�. 서류ì—는 Brevesê°€ ì‹ ê³ ì¸ìœ¼ë¡� 제출했으ë©�, 2025-08-19ì—� ë²•ì •ëŒ€ë¦¬ì¸ Molly R. Bensonì� 그녀ë¥� 대신해 서명했다ê³� 기재ë˜ì–´ 있습니다.

Le dépôt indique que Christine S. Breves, administratrice de MPLX GP LLC (associé commandité de MPLX LP), a acquis 213,782 unités ordinaires de MPLX le 15/08/2025 à un prix déclaré de 0 $. Après la transaction, elle détenait à titre bénéficiaire 11,388.941 unités ordinaires. Le formulaire précise que Breves dépose en tant que personne déclarante et qu’il a été signé en son nom par Molly R. Benson, mandataire, le 19/08/2025.

Die Einreichung berichtet, dass Christine S. Breves, Direktorin von MPLX GP LLC (dem Generalpartner von MPLX LP), am 15.08.2025 213,782 Stammanteile von MPLX zu einem angegebenen Preis von $0 erworben hat. Nach der Transaktion hielt sie wirtschaftlich 11.388,941 Stammanteile. Das Formular gibt an, dass Breves als meldepflichtige Person einreicht und es am 19.08.2025 im Namen von Breves von Molly R. Benson, Bevollmächtigte, unterschrieben wurde.

Positive
  • Reported acquisition recorded: 213.782 common units acquired on 08/15/2025
  • Updated beneficial ownership disclosed: 11,388.941 common units following the transaction
  • Clear governance disclosure: Reporting person identified as a director of MPLX GP LLC
Negative
  • None.

Insights

TL;DR: Director purchase of 213.782 units increases reported beneficial ownership to 11,388.941 units; transaction was reported on Form 4.

The Form 4 documents a non-derivative acquisition by Christine S. Breves on 08/15/2025 of 213.782 common units at a reported price of $0, increasing her beneficial holdings to 11,388.941 units. The filing states Breves is a director of MPLX GP LLC, the general partner that manages the issuer. The report was executed by an attorney-in-fact and filed consistent with Section 16 reporting requirements. No additional financial terms, plan details, or explanations for the $0 price are provided in the filing.

TL;DR: Routine insider disclosure showing a director-level acquisition and updated beneficial ownership on the issuer's Form 4.

The document is a standard Section 16 Form 4 disclosing a director-level acquisition. It names the reporting person, her relationship to the issuer, the exact unit change (213.782 units acquired), and the resulting total beneficial ownership. The filing includes the required signature block signed by an attorney-in-fact. The form does not state whether the units were issued as compensation, transfer, or under a plan.

La comunicazione riporta che Christine S. Breves, amministratrice di MPLX GP LLC (socio accomandatario di MPLX LP), ha acquistato 213.782 quote ordinarie di MPLX il 15/08/2025 a un prezzo dichiarato di $0. Dopo l’operazione deteneva a titolo beneficiario 11.388.941 quote ordinarie. Il modulo indica che Breves presenta la dichiarazione come persona soggetta all’obbligo di segnalazione ed è stato firmato per suo conto da Molly R. Benson, procuratrice, in data 19/08/2025.

El informe indica que Christine S. Breves, directora de MPLX GP LLC (la socia general de MPLX LP), adquirió 213.782 unidades comunes de MPLX el 15/08/2025 a un precio declarado de $0. Tras la operación, poseía de forma beneficiaria 11.388.941 unidades comunes. El formulario señala que Breves presenta la notificación como persona informante y fue firmado en su nombre por Molly R. Benson, apoderada, el 19/08/2025.

ì‹ ê³ ì„œì— ë”°ë¥´ë©� MPLX GP LLC(MLPX LPì� ì¼ë°˜ 파트ë„�) ì´ì‚¬ì� Christine S. Brevesê°€ 2025-08-15ì—� MPLX 보통ì£� 213.782ì£�ë¥� ì‹ ê³ ë� ê°€ê²� $0ì—� ì·¨ë“했습니다. 거래 í›� 그녀ëŠ� 11,388.941ì£�ë¥� 실질ì ìœ¼ë¡� 보유하고 있었습니ë‹�. 서류ì—는 Brevesê°€ ì‹ ê³ ì¸ìœ¼ë¡� 제출했으ë©�, 2025-08-19ì—� ë²•ì •ëŒ€ë¦¬ì¸ Molly R. Bensonì� 그녀ë¥� 대신해 서명했다ê³� 기재ë˜ì–´ 있습니다.

Le dépôt indique que Christine S. Breves, administratrice de MPLX GP LLC (associé commandité de MPLX LP), a acquis 213,782 unités ordinaires de MPLX le 15/08/2025 à un prix déclaré de 0 $. Après la transaction, elle détenait à titre bénéficiaire 11,388.941 unités ordinaires. Le formulaire précise que Breves dépose en tant que personne déclarante et qu’il a été signé en son nom par Molly R. Benson, mandataire, le 19/08/2025.

Die Einreichung berichtet, dass Christine S. Breves, Direktorin von MPLX GP LLC (dem Generalpartner von MPLX LP), am 15.08.2025 213,782 Stammanteile von MPLX zu einem angegebenen Preis von $0 erworben hat. Nach der Transaktion hielt sie wirtschaftlich 11.388,941 Stammanteile. Das Formular gibt an, dass Breves als meldepflichtige Person einreicht und es am 19.08.2025 im Namen von Breves von Molly R. Benson, Bevollmächtigte, unterschrieben wurde.

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*
Breves Christine S

(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 213.782 A $0 11,388.941 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 Christine S. Breves 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 transaction did MPLX insider Christine S. Breves report on Form 4?

The Form 4 reports Ms. Breves acquired 213.782 common units of MPLX on 08/15/2025 at a reported price of $0.

How many MPLX units does Christine S. Breves beneficially own after the transaction?

After the reported acquisition, Ms. Breves beneficially owned 11,388.941 common units.

What is Christine S. Breves' relationship to MPLX as stated in the filing?

The filing states she is a Director of MPLX GP LLC, the general partner of the issuer.

When was the Form 4 signed and who signed it?

The signature block shows the form was signed by Molly R. Benson, Attorney-in-Fact for Christine S. Breves, dated 08/19/2025.

Does the filing explain why the reported price is $0?

The Form 4 does not provide an explanation for the reported price of $0 in the transaction details.
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51.29B
370.01M
63.69%
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Oil & Gas Midstream
Pipe Lines (no Natural Gas)
United States
FINDLAY