Changes in Beneficial Ownership · 4
MPLX LP
MPLXNYSEEQUITYCurrent
Changes in Beneficial Ownership
Structured filing — 4
ownership.xml
Filing details
- Report period
- 2026-08-14
- Issuer
- MPLX LP
- Issuer CIK
- 0001552000
- Trading symbol
- MPLX
Reporting owner 1
- Name
- Peiffer Garry L.
- Reporting owner CIK
- 0001521094
- Relationship
- Director
- Address
- C/O MPLX LP, 200 E. HARDIN STREET, FINDLAY, OH, 45840
Non-derivative transactions
| Security | Transaction date | Code | Amount | A / D | Price (USD) | Owned after | Ownership |
|---|---|---|---|---|---|---|---|
| Common Units (Limited Partner Interests) | 2026-08-14 | A · Form 4 | 1,232.166 | A | 0 | 69,313.23 | D |
Table key
- A · Form 4
- Acquisition by grant, award or otherwise under Rule 16b-3(d)
- A
- Acquired
- D
- Direct
Non-derivative holdings
| Security | Amount owned | Ownership | Nature of ownership |
|---|---|---|---|
| Common Units (Limited Partner Interests) | 68,497 | I | By Revocable Trust[F1] |
Table key
- I
- Indirect
Footnotes
- F1
- By Garry L. and Kathleen J. Peiffer Trust, created on April 24, 2026.↩ 1
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.
Signature 1
- Signed
- /s/ Molly R. Benson, Attorney-in-Fact for Garry L. Peiffer
- Date
- 2026-08-18