| 1 | Madison Brothers Investment, LLC | Brownsville, KY 42210 | Oil & Gas Operator | Dec 2023 |
| 2 | Magnum DRLG Of Ohio, Inc | Ashland, KY 41102 | Oil & Gas Operator | Dec 2024 |
| 3 | Magnum Hunter Production, Inc. | Irving, TX 75014 | Oil & Gas Operator | Dec 2019 |
| 4 | Magnum Oil, LLC | Hartford, KY 42347 | Oil Operator | Dec 2023 |
| 5 | Majestic Management Corp | | Oil Operator | Dec 2013 |
| 6 | Marco Oil Company | Sparta, KY 41086 | Oil Operator | Dec 2021 |
| 7 | Marsh Oil & Gas Field Services, Inc | Sebree, KY 42455 | Oil & Gas Operator | Dec 2023 |
| 8 | Matriks Energy LLC | Ashland, KY 41102 | Gas Operator | Dec 2024 |
| 9 | Maxim Energy Inc Dba Maxim Tep Inc | | Oil Operator | Dec 2009 |
| 10 | Maximum Energy Development, LLC | Glasgow, KY 42142 | Oil Operator | Dec 2022 |
| 11 | Maximum Oil & Gas, Inc | | Gas Operator | Dec 2024 |
| 12 | MBM Production, LLC | Pikeville, KY 41501 | Oil & Gas Operator | Dec 2024 |
| 13 | MDM Energy, Inc. | The Colony, TX 75056 | Oil & Gas Operator | Apr 2026 |
| 14 | Meng, Charles H | Lexington, KY 40502 | Gas Operator | Dec 2024 |
| 15 | Mercury Petroleum Company, Inc | | Oil Operator | Dec 2018 |
| 16 | Meridian Resources LLC | Evansville, IN 47715 | Oil Operator | Jul 2024 |
| 17 | Metgas Co, A Partnership | | Oil & Gas Operator | Dec 2016 |
| 18 | Miami Oil Producers Inc | Reno, NV 89501 | Oil & Gas Operator | Dec 2012 |
| 19 | Midway City Gas Company | Huntington, WV 25701 | Oil & Gas Operator | Dec 2018 |
| 20 | Midwest Radiant Oil & Gas Co | | Oil Operator | Dec 2014 |
| 21 | Mieka LLC | Flower Mound, TX 75028-7446 | Oil & Gas Operator | Dec 2014 |
| 22 | Mill Branch Partners | Prestonsburg, KY 41653 | Oil & Gas Operator | Dec 2024 |
| 23 | Minerals MGMT Group, Inc | Oklahoma City, OK 73112 | Oil & Gas Operator | Dec 2018 |
| 24 | Mollett Oil Productions, LLC | Thelma, KY 41260 | Oil Operator | Dec 2020 |
| 25 | Montgomery Oil Co | | Oil Operator | Dec 2018 |
| 26 | Moody Oil LLC | Henderson, KY 42420 | Oil Operator | Dec 2024 |
| 27 | Moran, F E Oil Co | Evansville, IN 47715 | Oil Operator | Dec 2015 |
| 28 | Morgan, Robert L | | Oil Operator | Dec 2017 |
| 29 | Mountain DRLG, Inc | Hindman, KY 41822 | Oil & Gas Operator | Dec 2024 |
| 30 | Mountain V Oil & Gas, Inc. | Buckhannon, WV 26201 | Oil & Gas Operator | Dec 2024 |
| 31 | MSD Energy, Inc | Rapid City, SD 57702 | Oil & Gas Operator | Dec 2020 |
| 32 | Mud River Oil & Gas, LLC | Rochester, KY 42273 | Oil Operator | Dec 2023 |
| 33 | Musgrave, Dalton | | Oil Operator | Dec 2020 |