STICE J MICHAEL 4

What Happened
J. Michael Stice, a director of MPLX GP LLC (the general partner of MPLX LP), was granted 2,579.543 shares on April 30, 2026. The transaction is reported as an award/acquisition (code A) at a reported acquisition price of $0.00 — this reflects an equity retainer award, not a cash purchase or sale.

Key Details

• Transaction date: 2026-04-30; Form 4 filed: 2026-05-04 (Form 4 is typically due within two business days, so this filing appears late).
• Transaction type/code: Grant/Award (A). Reported price per share: $0.00; total reported cash value: $0.00.
• Shares granted: 2,579.543.
• Shares owned after the transaction: Not specified in the filing.
• Footnote: F1 — represents the reporting person's annual 2026 equity retainer award.
• Remark: Reporting person is a director of MPLX GP LLC, the issuer’s general partner; the issuer is managed by the directors and executive officers of MPLX GP LLC.

Context
This was a compensation-related equity award (director retainer). Such awards are routine director compensation and do not necessarily indicate buying or selling intent by the insider. The filing does not specify vesting, restrictions, or whether the units are immediately transferable.