9 transactions on file, per SEC Form 4 filings.
See MPC superinvestor activity →Lyon Shawn M
SVP Log & Storage, MPLX GP LLC · 2026-08-31
Sold
$376K
Lyon Shawn M
SVP Log & Storage, MPLX GP LLC · 2026-08-28
Sold
$157K
Brzezinski Erin M
VP and Controller · 2026-08-27
Sold
$207K
Benson Molly R
Chief Legal Ofc & Corp Sec · 2026-08-17
Option exercise
$343K
Benson Molly R
Chief Legal Ofc & Corp Sec · 2026-08-17
Option exercise
$239K
Benson Molly R
Chief Legal Ofc & Corp Sec · 2026-08-17
Sold
$1.8M
Lyon Shawn M
SVP Log & Storage, MPLX GP LLC · 2026-08-13
Sold
$875K
Henschen Michael A II
Ex VP, Refining · 2026-08-12
Sold
$2.1M
Mannen Maryann T.
Chairman, President & CEO · 2026-08-03
Tax withholding
$283K
Each row links to the underlying SEC filing. Sells are shown for transparency, not as a signal — see the insider trading article for why.
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