SEC Form 4 · accession 0001193125-26-355612
MPLX LP · MPLX
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Frank M Semple
Director
Period of report
Aug 14, 2026
Accepted (ET)
Aug 18, 2026 · 4:43 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 | 1,073 | $0.00 | A | 63,476 | D | |
| Common Units (Limited Partner Interests) | holding | — | — | — | 333,337 | I | Frank M Semple Revocable Trust | |
| Common Units (Limited Partner Interests) | holding | — | — | — | 111,180 | I | Robin Y Semple 2012 Dynasty Trust | |
| Common Units (Limited Partner Interests) | holding | — | — | — | 48,777 | I | EK Holdings LLC |
Table II — derivative securities
No Table II lines on this filing.
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.