| 03/02/26 | Mannen Maryann T.Chairman, President & CEO, Director | Tax Withholding | 2,236 | $206.30 | $461.29K |
| 03/02/26 | Floerke Gregory ScottEx VP & COO, MPLX GP LLC | Tax Withholding | 278 | $206.30 | $57.35K |
| 03/02/26 | Floerke Gregory ScottEx VP & COO, MPLX GP LLC | Tax Withholding | 251 | $206.30 | $51.78K |
| 03/02/26 | Floerke Gregory ScottEx VP & COO, MPLX GP LLC | Tax Withholding | 278 | $206.30 | $57.35K |
| 03/01/26 | Khoury Maria AExec VP & Chief Fin Ofc | Award | 2,443 | - | - |
| 03/01/26 | Henschen Michael A IiEx VP, Refining | Award | 2,290 | - | - |
| 03/01/26 | Hessling Ricky D.Chief Commercial Officer | Award | 2,748 | - | - |
| 03/01/26 | Brzezinski Erin MVP and Controller | Award | 509 | - | - |
| 03/01/26 | Benson Molly RChief Legal Ofc & Corp Sec | Award | 2,544 | - | - |
| 03/01/26 | Lyon Shawn MSVP Log & Storage, MPLX GP LLC | Award | 1,730 | - | - |
| 03/01/26 | Mannen Maryann T.Chairman, President & CEO, Director | Award | 15,266 | - | - |
| 03/01/26 | Floerke Gregory ScottEx VP & COO, MPLX GP LLC | Award | 1,730 | - | - |
| 02/12/26 | Henschen Michael A IiEx VP, Refining | Sell | 5,289 | $202.32 | $1.07M |
| 02/12/26 | Henschen Michael A IiEx VP, Refining | Gift | 511 | - | - |
| 02/01/26 | Khoury Maria AExec VP & Chief Fin Ofc | Award | 1,574 | - | - |
| 12/12/25 | Lyon Shawn MSVP Log & Storage, MPLX GP LLC | Tax Withholding | 86 | $185.77 | $15.98K |
| 12/12/25 | Hessling Ricky D.Chief Commercial Officer | Tax Withholding | 98 | $185.77 | $18.21K |
| 12/12/25 | Henschen Michael A IiEx VP, Refining | Tax Withholding | 160 | $185.77 | $29.72K |
| 12/12/25 | Hennigan Michael JExecutive Chairman, Director | Tax Withholding | 466 | $185.77 | $86.57K |
| 12/12/25 | Floerke Gregory ScottEx VP & COO, MPLX GP LLC | Tax Withholding | 85 | $185.77 | $15.79K |
| 12/12/25 | Benson Molly RChief Legal Ofc & Corp Sec | Tax Withholding | 107 | $185.77 | $19.88K |
| 08/15/25 | Benson Molly RChief Legal Ofc & Corp Sec | Option Exercise | 10,879 | $62.68 | $681.90K |
| 08/15/25 | Benson Molly RChief Legal Ofc & Corp Sec | Sell | 10,879 | $163.00 | $1.77M |
| 08/01/25 | Mannen Maryann T.President & CEO, Director | Tax Withholding | 908 | $166.39 | $151.08K |
| 07/03/25 | Rucker Kim K.w.Director | Sell | 7,392 | $175.00 | $1.29M |