| 1 | M E Booth Corporation | Ada, OK 74820-0584 | Oil Operator | Jan 2024 |
| 2 | M E Klein & Associates LLC | Washington, OK 73070-8106 | Oil & Gas Operator | Jan 2024 |
| 3 | M K W Inc | Oklahoma City, OK 73112-8884 | Oil & Gas Operator | Dec 2009 |
| 4 | Mac Laskey Kelly Oilfield | El Dorado, KS 67042 | Oil & Gas Operator | Jan 2024 |
| 5 | Macmart Inc | Wynnewood, OK 73098-0337 | Oil & Gas Operator | Jan 2016 |
| 6 | Magaw & Zimmer | Perry, OK 73077-1055 | Oil & Gas Operator | Aug 2013 |
| 7 | Magic Investments LLC | Edmond, OK 73013-1688 | Oil & Gas Operator | Nov 2023 |
| 8 | Mark A Meier Dba MSC Oil And Gas Co | Oklahoma City, OK 73154 | Oil & Gas Operator | Jan 2024 |
| 9 | Marler Philip | Purcell, OK 73080-1522 | Oil & Gas Operator | Nov 2016 |
| 10 | Marsh Lonnie C | Konawa, OK 74849-4929 | Oil & Gas Operator | Jan 2024 |
| 11 | Marsh Oil & Gas Company | Pauls Valley, OK 73075-0726 | Oil & Gas Operator | Jan 2024 |
| 12 | Mason Robert A Production Co | Edmond, OK 73013-9102 | Oil & Gas Operator | May 2013 |
| 13 | Massad George H Estate | Holdenville, OK 74848 | Oil & Gas Operator | Dec 2014 |
| 14 | Massad John M | Holdenville, OK 74848-2629 | Oil & Gas Operator | Oct 2017 |
| 15 | Massad Oil Company | Holdenville, OK 74848-2629 | Oil Operator | Dec 2023 |
| 16 | Mathews Exploration Corporation | Oklahoma City, OK 73155-5328 | Oil & Gas Operator | Mar 2015 |
| 17 | Matthews Oil & Gas | Francis, OK 74844-0357 | Oil & Gas Operator | Dec 2023 |
| 18 | Meadowbrook Oil Corporation Of Ok Inc | Del City, OK 73115-3608 | Oil & Gas Operator | Jan 2024 |
| 19 | Meek Joe E | | Oil Operator | Jul 2010 |
| 20 | Mendell Petroleum Corporation | Castle Rock, CO 80104-9045 | Oil & Gas Operator | Sep 2004 |
| 21 | Mercer Oil & Gas Co. | Norman, OK 73070 | Oil & Gas Operator | Apr 2015 |
| 22 | Michael Goodnight Operating LLC | Saint Louis, OK 74866-0051 | Oil & Gas Operator | Dec 2023 |
| 23 | Mid-Con Central Expl Co | Tulsa, OK 74136 | Oil & Gas Operator | Aug 2014 |
| 24 | Moabb Oil Corp | | Oil & Gas Operator | Apr 1998 |
| 25 | Moore Richard L | Morris, OK 74445 | Oil Operator | Aug 2013 |
| 26 | Moran-K Oil LLC | Seminole, OK 74818-1295 | Oil & Gas Operator | Jan 2024 |
| 27 | Moran-Kahn Oil | Seminole, OK 74868 | Oil & Gas Operator | Mar 1992 |
| 28 | Morrison International Energy Inc | Oklahoma City, OK 73189-0537 | Oil & Gas Operator | Dec 2023 |
| 29 | Mud Operations Inc | Ames, OK 73718-9501 | Oil & Gas Operator | Jan 2024 |
| 30 | Murphy Jack L | Tulsa, OK 74104-4915 | Oil Operator | Mar 2015 |