| 1 | Camelot Oil And Gas, LLC | Houston, TX 77002 | Oil & Gas Operator | Apr 2003 |
| 2 | Central Mineral Operating Co,Inc | San Antonio, TX 78216 | Oil & Gas Operator | Apr 1997 |
| 3 | Chesapeake Operating, Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Aug 2024 |
| 4 | Chesapeake Operating, LLC | Oklahoma City, OK 73154 | Oil & Gas Operator | Dec 2024 |
| 5 | Cheyenne Minerals, Inc. | Houston, TX 77030 | Oil & Gas Operator | Jun 2001 |
| 6 | Chittim Operating LLC | Houston, TX 77079 | Oil & Gas Operator | Dec 2024 |
| 7 | Clark, John M. | Midland, TX 79701 | Oil & Gas Operator | Dec 1993 |
| 8 | CML Exploration, LLC | Austin, TX 78746 | Oil & Gas Operator | Dec 2024 |
| 9 | CMR Energy, L.P. | Houston, TX 77077 | Oil & Gas Operator | Dec 2024 |
| 10 | Cobra Oil & Gas Corporation | Wichita Falls, TX 76307 | Oil & Gas Operator | Dec 2024 |
| 11 | Comanche Production, Inc. | Longview, TX 75606 | Oil & Gas Operator | Jan 2006 |
| 12 | Conoco Inc. | Houston, TX 77252 | Oil & Gas Operator | Mar 2015 |
| 13 | ConocoPhillips Company | Midland, TX 79701 | Oil & Gas Operator | Dec 2024 |
| 14 | Continental Operating Co. | Houston, TX 77024 | Oil & Gas Operator | Dec 2024 |
| 15 | Conway Energy Oper Services Inc. | San Diego, TX 78384 | Oil & Gas Operator | Dec 2024 |
| 16 | Cornerstone E & P Company, LP | Irving, TX 75038 | Oil & Gas Operator | Nov 2010 |