| 1 | C6 Operating, L.L.C. | Keatchie, LA 71046 | Oil & Gas Operator | May 2024 |
| 2 | Cabot Oil & Gas Corporation | Houston, TX 77024 | Oil & Gas Operator | Jan 2024 |
| 3 | Cameron Exploration, Inc. | Longview, TX 75604 | Oil & Gas Operator | May 2024 |
| 4 | Cameron, Paul E., Jr., Inc. | Montgomery, TX 77356 | Oil & Gas Operator | May 2015 |
| 5 | Carter Resources | Kilgore, TX 75663 | Oil & Gas Operator | Jan 2005 |
| 6 | Chesapeake Operating, Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Jan 2024 |
| 7 | Chesapeake Operating, LLC | Oklahoma City, OK 73154 | Oil & Gas Operator | May 2024 |
| 8 | Common Resources L.L.C. | The Woodlands, TX 77380 | Oil & Gas Operator | May 2010 |
| 9 | Comstock Oil & Gas, LLC | Frisco, TX 75034 | Oil & Gas Operator | May 2024 |
| 10 | ConocoPhillips Company | Midland, TX 79701 | Oil & Gas Operator | May 2024 |
| 11 | Contango Resources, Inc. | Houston, TX 77002 | Oil & Gas Operator | Feb 2024 |
| 12 | Covey Park Resources LLC | Frisco, TX 75034 | Oil & Gas Operator | Aug 2019 |
| 13 | Crimson Exploration Oper., Inc. | Houston, TX 77002 | Oil & Gas Operator | Dec 2019 |