MPLX LP 4

Director Frank M. Semple received an amended annual equity retainer award of 3,028.941 MPLX LP common units on April 30, 2026.

On April 30, 2026, Director Frank M. Semple of MPLX LP received an annual 2026 equity retainer award of 3,028.941 common units (limited partner interests), increasing his direct beneficial ownership to 61,201.275 units. Based on the current MPLX unit price of approximately $59.29, the award is valued at about $180,000 and brings the estimated value of his total direct holdings to roughly $3.63 million. This Form 4/A is an amendment filed to correct the originally reported size of the equity retainer award and the resulting post-transaction ownership balance as of April 30, 2026, and it does not reflect any transactions occurring after that date.

Filing Facts

CIK

1552000

Ticker

MPLX

Form

4

Source Type

sec

Accession

0001193125-26-335174

Alert Tier

5