| 1 | C & C Petroleum Management, LLC | Abilene, TX 79601 | Oil & Gas Operator | Dec 2025 |
| 2 | C & L Oil Company | Cross Plains, TX 76443 | Oil & Gas Operator | Dec 2025 |
| 3 | Cabana Oil Corp. | Abilene, TX 79608 | Oil & Gas Operator | Feb 2006 |
| 4 | Cal-Tex Fossil, L.L.C. | Graham, TX 76450 | Oil & Gas Operator | May 2020 |
| 5 | Callahan Land Company | Richardson, TX 75081 | Oil & Gas Operator | Sep 2020 |
| 6 | Canan Operating, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 2025 |
| 7 | Cardinal Producing Co. | Abilene, TX 79606 | Oil & Gas Operator | Aug 2003 |
| 8 | Carrland Oil & Gas Inc. | Prosper, TX 75078 | Oil & Gas Operator | Dec 2025 |
| 9 | CDJ Oil Co. | Albany, TX 76430 | Oil & Gas Operator | Jul 2025 |
| 10 | CDJ Oil Company, LLC | Albany, TX 76430 | Oil & Gas Operator | Dec 2025 |
| 11 | Cedar Oil Company | Midland, TX 79707 | Oil & Gas Operator | Dec 2025 |
| 12 | Cedar Ridge Energy, Inc. | Coleman, TX 76834 | Oil & Gas Operator | Dec 2025 |
| 13 | Celero Energy LP | Midland, TX 79701 | Oil & Gas Operator | May 2011 |
| 14 | Central Energy Producing Company | San Antonio, TX 78217 | Oil & Gas Operator | Sep 2003 |
| 15 | Chalmers Exploration Company | Abilene, TX 79608 | Oil & Gas Operator | Apr 1997 |
| 16 | Chambers, R. H. | Abilene, TX 79606 | Oil & Gas Operator | Apr 2006 |
| 17 | Chapman Oil Company | Midland, TX 79702 | Oil & Gas Operator | Nov 2025 |
| 18 | Charter Petroleum Company | Abilene, TX 79605 | Oil & Gas Operator | Dec 2025 |
| 19 | Chief Operating Company | Houston, TX 77070 | Oil & Gas Operator | Feb 2004 |
| 20 | Chiodo Corp. | San Antonio, TX 78232 | Oil & Gas Operator | Dec 2025 |
| 21 | Chisholm Operating, Inc. | Abilene, TX 79606 | Oil & Gas Operator | Dec 2025 |
| 22 | Cholla Petroleum Inc | Dallas, TX 75225 | Oil & Gas Operator | Dec 2025 |
| 23 | Clark, B. C. | Cross Plains, TX 76443 | Oil Operator | Dec 2007 |
| 24 | Clausen, A. G. | Cross Plains, TX 76443 | Oil & Gas Operator | Dec 2025 |
| 25 | Clavo Oil, LLC | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 26 | Clear Fork, Incorporated | Abilene, TX 79604 | Oil & Gas Operator | Dec 2025 |
| 27 | Cobalt Operating, LLC | Midland, TX 79710 | Oil & Gas Operator | Feb 2025 |
| 28 | Cobra Oil & Gas Corporation | Wichita Falls, TX 76307 | Oil & Gas Operator | Dec 2025 |
| 29 | Cockrell Production Co., Inc. | Irving, TX 75014 | Oil & Gas Operator | Dec 2025 |
| 30 | Colo Construction Co., Inc. | Abilene, TX 79602 | Oil Operator | Apr 2004 |
| 31 | Colo Exploration Company, Inc. | Benbrook, TX 76126 | Oil & Gas Operator | Dec 2025 |
| 32 | Concho Oilfield Service, Inc. | Albany, TX 76430 | Oil & Gas Operator | Apr 2013 |
| 33 | Conquistador Petroleum,Inc. | Coleman, TX 76834 | Oil & Gas Operator | Dec 2025 |
| 34 | Consolidated Exploration Company | Nichols Hill, OK 73116 | Oil & Gas Operator | Apr 2015 |
| 35 | Continual Oil & Gas, Inc. | Abilene, TX 79602 | Oil & Gas Operator | Dec 2025 |
| 36 | Contour Oil & Gas, LLC | Abilene, TX 79602 | Oil & Gas Operator | Dec 2015 |
| 37 | Copper Ridge Resources LLC | Midland, TX 79710 | Oil Operator | Feb 2025 |
| 38 | Coquina Oil Corporation | Houston, TX 77227 | Oil & Gas Operator | Mar 2015 |
| 39 | Couch Oil & Gas, Inc. | Dallas, TX 75229 | Oil & Gas Operator | Dec 2025 |
| 40 | Couch, Gilbert | Kilgore, TX 75663 | Oil & Gas Operator | Dec 2025 |
| 41 | Cox, H. L. | Wichita Falls, TX 76307 | Oil & Gas Operator | Jan 2011 |
| 42 | Cremson Oil & Gas | Coleman, TX 76834 | Oil & Gas Operator | Dec 2025 |
| 43 | Creston Petroleum Corp. | Dallas, TX 75380 | Oil & Gas Operator | Dec 2025 |
| 44 | Crosstex Services, L.L.C. | Tuscola, TX 79562 | Oil Operator | Dec 2025 |
| 45 | Crownquest Operating, LLC | Midland, TX 79710 | Oil & Gas Operator | Dec 2025 |
| 46 | CRT'S, Inc. | Abilene, TX 79605 | Oil & Gas Operator | Aug 2008 |
| 47 | Crude Production Company | Clyde, TX 79510 | Oil & Gas Operator | Dec 2025 |
| 48 | Cuatro Oil And Gas Corporation | Abilene, TX 79603 | Oil & Gas Operator | Dec 2025 |
| 49 | Cumberland Petroleum, Inc. II | Weatherford, TX 76086 | Oil & Gas Operator | May 1997 |
| 50 | Cwic, Inc. | Granbury, TX 76049 | Oil & Gas Operator | Dec 2025 |
| 51 | Cwo Energy, LLC | Midland, TX 79705 | Oil Operator | Dec 2025 |
| 52 | Cyber Enviro-Tech Inc | San Tan Valley, AZ 85144 | Oil & Gas Operator | Dec 2025 |