| Goff Gregory JamesExec Vice Chairman · 13 transactions | — | 1.49M†as of Dec 2019 | 1.70M | 140 | — |
| Heminger Gary R.Executive Chairman, Director · 59 transactions | — | 733.5K†as of Apr 2020 | 1.19M | — | 295.8K |
| Heminger Gary RPresident & CEO, Director · 6 transactions | — | 232.3K†as of Jul 2012 | 186.4K | — | — |
| Hennigan Michael JExecutive Chairman, Director · 52 transactions | — | 220.9K | 648.3K | — | 280.1K |
| Daberko David A.Director · 22 transactions | — | 152.5Kas of Apr 2018 | 12.0K | — | — |
| Davis William L.Director · 14 transactions | — | 133.0K†as of Apr 2016 | 6.5K | — | — |
| Kenney Anthony R.President, Speedway LLC · 56 transactions | — | 114.8K†as of Mar 2019 | 192.2K | — | 108.9K |
| Mannen Maryann T.Chairman, President & CEO, Director · 24 transactions | — | 114.1K | 157.7K | — | — |
| Templin Donald C.Executive Vice President · 46 transactions | — | 110.3K†as of Feb 2021 | 112.7K | 5.0K | — |
| Lee Charles RDirector · 18 transactions | — | 107.7Kas of Apr 2015 | 97.6K | — | — |
| Nichols Rodney P.Ex. VP, HR, Health & Admin. · 49 transactions | — | 93.1K†as of Dec 2017 | 93.0K | — | 25.9K |
| Brooks Raymond LEx. VP, Refining · 62 transactions | — | 90.3K†as of May 2022 | 286.7K | — | 217.4K |
| Schofield Seth EDirector · 18 transactions | — | 89.1Kas of Apr 2015 | 81.2K | — | — |
| Usher Thomas JDirector · 22 transactions | — | 82.7Kas of Apr 2016 | 28.2K | — | — |
| Snow John W.Director · 18 transactions | — | 81.7Kas of Apr 2017 | 9.6K | — | — |
| Bayh EvanDirector · 61 transactions | — | 73.0K | 36.1K | 6.5K | — |
| Griffith Timothy T.President, Speedway LLC · 50 transactions | — | 71.1Kas of May 2021 | 80.7K | 3.0K | — |
| Surma John PDirector · 60 transactions | — | 70.9K† | 36.1K | — | — |
| Palmer C. MichaelSr. VP, Supply Distrib. & Plan · 70 transactions | — | 63.3K†as of Mar 2018 | 166.0K | — | 120.8K |
| Daberko David ADirector · 8 transactions | — | 59.2Kas of Oct 2012 | 55.5K | — | — |
| Nickerson Randy SExec VP, Corporate Strategy · 3 transactions | — | 58.2Kas of Mar 2017 | 60.4K | — | — |
| Wilder J. MichaelVP, General Counsel & Sec · 40 transactions | — | 57.9K†as of Mar 2016 | 69.9K | — | 52.4K |
| Davis William LDirector · 8 transactions | — | 56.6K†as of Oct 2012 | 53.0K | — | — |
| Rohr James EDirector · 35 transactions | — | 55.5K†as of Apr 2021 | 21.0K | 21.2K | — |
| Kelley Thomas M.Sr. Vice President, Marketing · 65 transactions | — | 54.8K†as of Jun 2018 | 187.3K | — | 154.6K |
| Bedell Richard D.Sr. Vice President, Refining · 36 transactions | — | 53.4K†as of Mar 2016 | 98.8K | — | 61.2K |
| Davis Steven ADirector · 44 transactions | — | 47.0K†as of Jul 2022 | 24.3K | 11.0K | — |
| Gagle SuzanneGen Counsel and SVP Gov Aff · 71 transactions | — | 45.8Kas of Dec 2023 | 216.7K | — | 155.2K |
| Swearingen John SSr. VP, Trans. & Logistics · 12 transactions | — | 45.1K†as of Mar 2017 | 25.8K | — | 17.1K |
| Quaid John JExec VP & Chief Fin Ofc · 39 transactions | — | 36.4Kas of Mar 2025 | 33.0K | 400 | — |
| Beall Pamela K.M.Sr. VP (See Remarks) · 32 transactions | — | 35.8Kas of Dec 2015 | 101.4K | — | 92.9K |
| Shaffner George P.Sr. VP, HES&S (See Remarks) · 38 transactions | — | 35.4Kas of May 2015 | 85.5K | — | 66.4K |
| Bunch Charles EDirector · 44 transactions | — | 34.7Kas of Apr 2025 | 23.7K | 6.5K | — |
| Peiffer Garry L.Executive VP (See Remarks) · 15 transactions | — | 32.9K†as of Jan 2014 | 34.5K | — | — |
| James DonnaDirector · 29 transactions | — | 32.5Kas of Jul 2018 | 18.6K | — | — |
| Floerke Gregory ScottEx VP & COO, MPLX GP LLC · 23 transactions | — | 32.0K† | 16.9K | — | 8.2K |
| Benson Molly RChief Legal Ofc & Corp Sec · 17 transactions | — | 30.4K† | 18.2K | — | 10.9K |
| Snow John WDirector · 8 transactions | — | 30.3Kas of Oct 2012 | 27.5K | — | — |
| Tomasky SusanDirector · 28 transactions | — | 28.2Kas of Apr 2025 | 26.2K | — | — |
| Al Khayyal Abdulaziz FahdDirector · 37 transactions | — | 26.0K | 22.1K | — | — |
| Stice J MichaelDirector · 36 transactions | — | 24.7K | 21.2K | — | — |
| Galante Edward GDirector · 28 transactions | — | 24.0Kas of Apr 2025 | 21.8K | — | — |
| Henschen Michael A IIEx VP, Refining · 10 transactions | — | 21.9K | 7.3K | — | 11.6K |
| Rucker Kim K.W.Director · 45 transactions | — | 20.0K | 126.6K | — | 50.4K |
| Sauber David RSr. VP, HR, Health & Admin Srv · 3 transactions | — | 19.3Kas of Mar 2018 | 3.2K | — | — |
| Lyon Shawn MSVP Log & Storage, MPLX GP LLC · 25 transactions | — | 18.0K† | 27.7K | — | 20.1K |
| Cohen Jonathan ZDirector · 25 transactions | — | 16.2K | 14.6K | — | — |
| Aydt Timothy JEx VP, Refining · 29 transactions | — | 15.6K†as of Mar 2025 | 35.3K | — | 32.7K |
| Semple Frank MDirector · 27 transactions | — | 14.7K | 12.8K | — | — |
| Beall Pamela KMVice President (See Remarks) · 4 transactions | — | 13.3Kas of Feb 2012 | 13.6K | — | — |
| Braddock Michael G.VP & Chief Acctg Officer · 16 transactions | — | 11.4K†as of Aug 2014 | 6.7K | — | 1.9K |
| Campbell Jeffrey CDirector · 6 transactions | — | 8.7K† | 2.5K | 6.0K | — |
| Davis Brian CExec VP, Chief Commercial Ofc · 1 transaction | — | 7.9Kas of Mar 2021 | 7.9K | — | — |
| Kaczynski ThomasSVP, Finance and Treasurer · 44 transactions | — | 7.9Kas of Dec 2022 | 99.1K | — | 83.8K |
| Hessling Ricky D.Chief Commercial Officer · 22 transactions | — | 6.5K† | 7.7K | 2.0K | 5.5K |
| Hagedorn Carl KristopherSenior VP and Controller · 20 transactions | — | 5.5Kas of Nov 2023 | 25.8K | — | 26.2K |
| Khoury Maria AExec VP & Chief Fin Ofc · 2 transactions | — | 4.0K | 4.0K | — | — |
| Ellison-Taylor Kimberly NDirector · 8 transactions | — | 3.2K | 3.1K | — | — |
| Paterson Eileen P.Director · 4 transactions | — | 3.2K | 2.4K | — | — |
| Brzezinski Erin MVP and Controller · 12 transactions | — | 2.1K | 1.5K | — | — |
| Drake Eileen P.Director · 4 transactions | — | 750.15as of Oct 2024 | 746.37 | — | — |
| Townes-Whitley ToniDirector · 2 transactions | — | 395.27as of Apr 2023 | 395.27 | — | — |
| Marathon Oil Corp10% owner · 3 transactions | — | 2as of Jul 2011 | — | — | — |
| Marathon Oil Co/New10% owner · 1 transaction | — | 0as of Jun 2011 | — | — | — |