| 1 | Cag Petroleum Corp. | Dallas, TX 75382 | Oil & Gas Operator | Oct 2024 |
| 2 | Cantro Exploration, Inc. | San Antonio, TX 78270 | Oil & Gas Operator | May 2000 |
| 3 | Cashco Oil Company | Houston, TX 77024 | Oil & Gas Operator | Aug 2003 |
| 4 | CD Consulting & Operating Co. | Bridgeport, TX 76426 | Oil & Gas Operator | Oct 2024 |
| 5 | CH4 Energy II LLC | Fort Worth, TX 76109 | Oil & Gas Operator | Apr 2018 |
| 6 | Chaparral Energy, L.L.C. | Oklahoma City, OK 73142 | Oil & Gas Operator | Oct 2024 |
| 7 | Chesapeake Operating, Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Jul 2024 |
| 8 | Chesapeake Operating, LLC | Oklahoma City, OK 73154 | Oil & Gas Operator | Oct 2024 |
| 9 | Cheyenne Minerals, Inc. | Houston, TX 77030 | Oil & Gas Operator | Jun 2001 |
| 10 | Chmelar, Eugene Oil & Gas | Caldwell, TX 77836 | Oil & Gas Operator | Oct 2024 |
| 11 | Coastal Expanse Oil & Gas | Austin, TX 78746 | Oil & Gas Operator | Oct 2024 |
| 12 | Cobalt Energy LLC | Wichita, KS 67202 | Oil & Gas Operator | Jul 2024 |
| 13 | Coda Energy, Inc. | Dallas, TX 75231 | Oil & Gas Operator | Aug 1998 |
| 14 | Crawford Energy Operating Co | Houston, TX 77056 | Oil & Gas Operator | Aug 2008 |
| 15 | Crawford Hughes Operating Co. | The Woodlands, TX 77380 | Oil & Gas Operator | Oct 2024 |
| 16 | Crimson Energy Company, LC | Fort Worth, TX 76102 | Oil & Gas Operator | Mar 2004 |
| 17 | CRM Energy, Inc. | Oklahoma City, OK 73101 | Oil & Gas Operator | Oct 2024 |