SEC Form 4 · accession 0001193125-26-355727
MPLX LP · MPLX
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Garry L. Peiffer
Director
Period of report
Aug 14, 2026
Accepted (ET)
Aug 18, 2026 · 5:31 pm EDT
Rule 10b5-1 plan
box not checked
Issuer CIK
0001552000
Table I — non-derivative securities
| Security | Date | Code | Shares | Price | A/D | Owned after | D/I | Nature of ownership |
|---|---|---|---|---|---|---|---|---|
| Common Units (Limited Partner Interests) | Aug 14, 2026 | A | 1,232 | $0.00 | A | 69,313 | D | |
| Common Units (Limited Partner Interests)F1 | holding | — | — | — | 68,497 | I | By Revocable Trust |
Table II — derivative securities
No Table II lines on this filing.
Explanation of responses
- F1By Garry L. and Kathleen J. Peiffer Trust, created on April 24, 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.