MPLX LP 4

Director J. Michael Stice received an award of 982.715 MPLX LP common units, increasing his direct holdings to 58,412.913 units, with an additional 700 units held indirectly via a trust.

On August 14, 2026, J. Michael Stice, a director of MPLX GP LLC (the general partner of MPLX LP), acquired 982.715 common units of MPLX LP as an award (coded “A”) with no price paid, indicating a compensatory grant rather than an open-market purchase. Following this award, his directly held interest increased to 58,412.913 common units. In addition, he reports indirect ownership of 700 common units held by The Mike Stice Trust. Using the prevailing market price of approximately $59.69 per unit, the newly awarded units are valued at about $58,700, bringing the estimated market value of his directly held stake to roughly $3.49 million and his total reported holdings (direct plus the trust) to about $3.53 million. The transaction appears to be a routine equity-based compensation grant rather than a discretionary market transaction.

Filing Facts

CIK

1552000

Ticker

MPLX

Form

4

Source Type

sec

Accession

0001193125-26-355617

Alert Tier

5