| 1 | C & A Enterprises | Ballinger, TX 76821 | Oil & Gas Operator | Feb 2026 |
| 2 | C & L Operating, Inc. | Valera, TX 76884 | Oil & Gas Operator | Feb 2026 |
| 3 | C&P Resources Operating Co,LLC | Houston, TX 77056 | Oil & Gas Operator | Feb 2026 |
| 4 | Caddo Corporation | Austin, TX 78731 | Oil & Gas Operator | Feb 2026 |
| 5 | Caddo Operating Inc. | Marshall, TX 75671 | Oil & Gas Operator | Feb 2026 |
| 6 | Cal-Tex Gas Transmission Co,Inc. | Mabank, TX 75147 | Oil & Gas Operator | Nov 1999 |
| 7 | California-T.D. And Assoc., Inc. | Yorba Linda, CA 92886 | Oil & Gas Operator | Aug 2003 |
| 8 | Cardinal Producing Co. | Abilene, TX 79606 | Oil & Gas Operator | Aug 2003 |
| 9 | Carrland Oil & Gas Inc. | Prosper, TX 75078 | Oil & Gas Operator | Feb 2026 |
| 10 | Carter, Mattye Family Trust | Fort Worth, TX 76109 | Oil & Gas Operator | Oct 2002 |
| 11 | Carter, Mattye L., Estate Of | Gladewater, TX 75647 | Oil & Gas Operator | Feb 1995 |
| 12 | Cedar Oil Company | Midland, TX 79707 | Oil & Gas Operator | Feb 2026 |
| 13 | Cedar Ridge Energy, Inc. | Coleman, TX 76834 | Oil & Gas Operator | Feb 2026 |
| 14 | Celero Energy LP | Midland, TX 79701 | Oil & Gas Operator | May 2011 |
| 15 | Centaur Petroleum Corporation | Fort Worth, TX 76101 | Oil & Gas Operator | Feb 2026 |
| 16 | Centex Energy, LLC | Bryan, TX 77802 | Oil & Gas Operator | Feb 2026 |
| 17 | Centurion Operating Corporation | Rockwall, TX 75087 | Oil & Gas Operator | Feb 2026 |
| 18 | Chalmers Exploration Company | Abilene, TX 79608 | Oil & Gas Operator | Apr 1997 |
| 19 | Chancellor, Earl Sales Co., Inc. | Sweetwater, TX 79556 | Oil & Gas Operator | Feb 2026 |
| 20 | Chandler Oil & Gas, LLC | Beeville, TX 78102 | Oil & Gas Operator | Feb 2026 |
| 21 | Chaparral Energy, L.L.C. | Oklahoma City, OK 73142 | Oil & Gas Operator | Feb 2026 |
| 22 | Chapman Oil Company | Midland, TX 79702 | Oil & Gas Operator | Nov 2025 |
| 23 | Charis Oil & Gas, LLC | Addison, TX 75001 | Oil & Gas Operator | Feb 2026 |
| 24 | Chase Operating Company | Abilene, TX 79608 | Oil & Gas Operator | Feb 2016 |
| 25 | Cherokee Production Corp. | Greenville, TX 75401 | Oil & Gas Operator | Feb 2026 |
| 26 | Chiodo Corp. | San Antonio, TX 78232 | Oil & Gas Operator | Feb 2026 |
| 27 | Chisholm Operating, Inc. | Abilene, TX 79606 | Oil & Gas Operator | Feb 2026 |
| 28 | Circle M Royalty Co., Inc. | Weatherford, TX 76087 | Oil & Gas Operator | May 2007 |
| 29 | Citori Oil Company, LLC | Wichita Falls, TX 76308 | Oil & Gas Operator | May 2014 |
| 30 | City Of Brady | Brady, TX 76825 | Gas Operator | Feb 1998 |
| 31 | Clear Fork, Incorporated | Abilene, TX 79604 | Oil & Gas Operator | Feb 2026 |
| 32 | Coleman & Johnson Oil Company | Brownwood, TX 76801 | Oil & Gas Operator | Feb 2026 |
| 33 | Coleman County Project | Coleman, TX 76834 | Oil & Gas Operator | Oct 2012 |
| 34 | Concho Oilfield Serv & Oper Co. | Eden, TX 76837 | Oil & Gas Operator | Feb 2026 |
| 35 | Confed Oil Incorporated | Tulsa, OK 74103 | Oil & Gas Operator | Mar 2008 |
| 36 | Conquistador Petroleum,Inc. | Coleman, TX 76834 | Oil & Gas Operator | Feb 2026 |
| 37 | Continental Operating Co. | Houston, TX 77024 | Oil & Gas Operator | Feb 2026 |
| 38 | Continual Oil & Gas, Inc. | Abilene, TX 79602 | Oil & Gas Operator | Feb 2026 |
| 39 | Contour Oil & Gas, LLC | Abilene, TX 79602 | Oil & Gas Operator | Dec 2015 |
| 40 | Core Petro, LLC | Abilene, TX 79608 | Oil & Gas Operator | Feb 2026 |
| 41 | Coyote Services, Inc. | Coleman, TX 76834 | Oil & Gas Operator | Mar 2002 |
| 42 | Craruth Energy Corporation | Abilene, TX 79602 | Oil & Gas Operator | Feb 2026 |
| 43 | Creed Operating Co., LLC | Wichita Falls, TX 76301 | Oil & Gas Operator | Feb 2026 |
| 44 | Creek Energy, Inc. | Brownwood, TX 76804 | Oil & Gas Operator | Feb 2026 |
| 45 | Cremson Oil & Gas | Coleman, TX 76834 | Oil & Gas Operator | Feb 2026 |
| 46 | Crimson Energy Company, LC | Fort Worth, TX 76102 | Oil & Gas Operator | Mar 2004 |
| 47 | Crosstex Services, L.L.C. | Tuscola, TX 79562 | Oil Operator | Feb 2026 |
| 48 | Crude Production Company | Clyde, TX 79510 | Oil & Gas Operator | Feb 2026 |
| 49 | Crude Resources, Inc. | Carrollton, TX 75011 | Oil & Gas Operator | Mar 2008 |
| 50 | CWC Oil & Gas, LLC | Abilene, TX 79608 | Oil & Gas Operator | Feb 2026 |
| 51 | Cwic, Inc. | Granbury, TX 76049 | Oil & Gas Operator | Feb 2026 |
| 52 | CXL Energy LLC | Canada, 00100 | Oil & Gas Operator | Feb 2026 |