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MPLX LP (ticker: MPLX) corrects director grant to 3028.9410 units

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4/A

Rhea-AI Filing Summary

STICE J MICHAEL reported acquisition or exercise transactions in this Form 4 filing.

MPLX LP director J Michael Stice received 3028.9410 Common Units of limited partner interests on April 30, 2026 as his annual 2026 equity retainer award at a stated price of 0.0000 per unit. After this grant, he beneficially owned 56324.0950 Common Units as of that date. The amendment corrects the originally reported award size and holdings balance and indicates the transaction was not made under a Rule 10b5-1 trading plan.

Positive

  • None.

Negative

  • None.
Insider STICE J MICHAEL
Role Director
Type Security Shares Price Value
Grant/Award Common Units (Limited Partner Interests) F1, F2, F3 3,028.941 $0.00 $0.00
Holdings After Transaction: Common Units (Limited Partner Interests) — 56,324.095 shares (Direct)
Footnotes (3)
  1. F1. Represents the reporting person's annual 2026 equity retainer award.
  2. F2. This Form 4 is being amended to reflect the correct amount of the annual 2026 equity retainer award.
  3. F3. This amount reflects the correct balance of securities beneficially owned as of April 30, 2026. This balance does not include any transactions that occurred after April 30, 2026.
Equity retainer award units 3028.9410 units Annual 2026 equity retainer award granted to director on April 30, 2026
Units owned after transaction 56324.0950 units Beneficially owned Common Units as of April 30, 2026 after the award
Transaction price per unit 0.0000 Stated price for the Common Units granted in the equity retainer award
Transaction date April 30, 2026 Date the annual 2026 equity retainer award was granted
Common Units (Limited Partner Interests) financial
"Security title reported as Common Units (Limited Partner Interests)."
equity retainer award financial
"Represents the reporting person's annual 2026 equity retainer award."
beneficially owned financial
"This amount reflects the correct balance of securities beneficially owned as of April 30, 2026."
Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Form 4 Insider Transactions: What Each Field Means →

FAQ

What insider transaction did MPLX (MPLX) report for director J Michael Stice?
MPLX LP reported that director J Michael Stice received 3028.9410 Common Units on April 30, 2026 as his annual 2026 equity retainer award, increasing his beneficial ownership to 56324.0950 units in the amended insider transaction report.

How many MPLX (MPLX) units were granted in the 2026 equity retainer award?
The 2026 equity retainer award to director J Michael Stice totaled 3028.9410 Common Units. This grant represents his annual equity retainer for 2026, provided as limited partner interests in MPLX LP with a stated transaction price of 0.0000 per unit.

What is J Michael Stice’s MPLX (MPLX) unit ownership after this grant?
Following the April 30, 2026 equity retainer grant, J Michael Stice beneficially owned 56324.0950 MPLX Common Units. The filing specifies that this balance reflects holdings as of April 30, 2026 and does not include any transactions occurring after that date.

Why was this MPLX (MPLX) Form 4/A filing submitted as an amendment?
The Form 4/A was filed to correct the amount of the annual 2026 equity retainer award and the related holdings. A footnote explains that it now reflects the correct 3028.9410-unit award and the accurate 56324.0950-unit beneficial ownership balance as of April 30, 2026.

Was the MPLX (MPLX) director equity award made under a Rule 10b5-1 trading plan?
No. The filing’s Rule 10b5-1 checkbox indicates the transaction was not made under a Rule 10b5-1 trading plan. Instead, the acquisition reflects an annual 2026 equity retainer award of 3028.9410 Common Units granted to director J Michael Stice.

What transaction price per MPLX (MPLX) unit is reported for this director award?
The equity retainer grant to J Michael Stice is reported at a transaction price of 0.0000 per unit. This indicates it was a compensation-related award of Common Units, rather than an open-market purchase, consistent with an annual director equity retainer.
SEC Form 4
FORM 4UNITED 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*
STICE J MICHAEL
(Last)(First)(Middle)
C/O MPLX LP
200 E. HARDIN STREET
(Street)
FINDLAY OHIO 45840
(City)(State)(Zip)
UNITED STATES
(Country)		2. Issuer Name and Ticker or Trading Symbol
MPLX LP [ MPLX ] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirector10% Owner
Officer (give title below)Other (specify below)
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
04/30/2026		6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)
05/04/2026
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)
CodeVAmount(A) or (D)Price
Common Units (Limited Partner Interests)04/30/2026A3,028.941(1)(2)A$056,324.095(3)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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Explanation of Responses:
1. Represents the reporting person's annual 2026 equity retainer award.
2. This Form 4 is being amended to reflect the correct amount of the annual 2026 equity retainer award.
3. This amount reflects the correct balance of securities beneficially owned as of April 30, 2026. This balance does not include any transactions that occurred after April 30, 2026.
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 J. Michael Stice08/05/2026
** Signature of Reporting PersonDate
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.
* Form 4: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR