| 1 | M E G G , Inc. | Borger, TX 79008 | Oil & Gas Operator | Sep 2003 |
| 2 | M5oexit, LLC | Pampa, TX 79066 | Oil & Gas Operator | Oct 2025 |
| 3 | Mac 5 Operating, LLC | Pampa, TX 79065 | Oil & Gas Operator | Feb 2021 |
| 4 | Makar Production Company | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 5 | MC Panhandle, Inc. | Tulsa, OK 74102 | Gas Operator | Jul 1998 |
| 6 | McClelland Creek Properties,Inc. | Pampa, TX 79066 | Oil & Gas Operator | Oct 2025 |
| 7 | McDonald, R. A. Oil Co. | Borger, TX 79008 | Oil & Gas Operator | Oct 2002 |
| 8 | McMahon Operating Co., L.C. | Pampa, TX 79066 | Oil & Gas Operator | Dec 2004 |
| 9 | Megg, L.P. | Borger, TX 79008 | Oil & Gas Operator | Oct 2025 |
| 10 | Merrico Resources, Inc. | Ardmore, OK 73402 | Oil & Gas Operator | Mar 2008 |
| 11 | Mesa Operating Co. | Irving, TX 75039 | Oil & Gas Operator | Aug 1997 |
| 12 | Mesa Operating LTD Partnership | Amarillo, TX 79189 | Oil & Gas Operator | May 1994 |
| 13 | Meyer Oil Co., Inc. | Skellytown, TX 79080 | Oil & Gas Operator | May 2025 |
| 14 | Mge Resources, Inc. | Perryton, TX 79070 | Oil & Gas Operator | Jun 2025 |
| 15 | Middle Bay Production Co. Inc. | Houston, TX 77010 | Oil & Gas Operator | Sep 2014 |
| 16 | Minco Oil And Gas Co. | Pampa, TX 79066 | Oil & Gas Operator | Aug 2024 |
| 17 | Mission Resources Corporation | Houston, TX 77002 | Oil & Gas Operator | Mar 2008 |
| 18 | Mistex Operating, Inc. | Lewisville, TX 75029 | Oil & Gas Operator | Oct 2025 |
| 19 | Mobil Producing TX. & N.M. Inc. | Spring, TX 77389 | Oil & Gas Operator | Oct 2025 |
| 20 | Momentum Operating Co., Inc. | Albany, TX 76430 | Oil & Gas Operator | Oct 2025 |
| 21 | Mon Corp. | Pampa, TX 79066 | Oil & Gas Operator | Oct 2025 |
| 22 | Mustang Oil & Gas Corporation | Wichita Falls, TX 76308 | Oil & Gas Operator | Jul 2021 |
| 23 | Myriad Resources Corporation | Pampa, TX 79066 | Oil & Gas Operator | Oct 2025 |