| 1 | C & C Petroleum Management, LLC | Abilene, TX 79601 | Oil & Gas Operator | Feb 2026 |
| 2 | C & L Operating, Inc. | Valera, TX 76884 | Oil & Gas Operator | Feb 2026 |
| 3 | C O G Company | Bangs, TX 76823 | Oil & Gas Operator | Feb 2026 |
| 4 | Caddo Operating Inc. | Marshall, TX 75671 | Oil & Gas Operator | Feb 2026 |
| 5 | California-T.D. And Assoc., Inc. | Yorba Linda, CA 92886 | Oil & Gas Operator | Aug 2003 |
| 6 | Candleridge Oil, Inc. | Fort Worth, TX 76109 | Oil & Gas Operator | Jun 2003 |
| 7 | Casador Oil & Gas Co. | Keller, TX 76248 | Gas Operator | Aug 2003 |
| 8 | Cedar Ridge Energy, Inc. | Coleman, TX 76834 | Oil & Gas Operator | Feb 2026 |
| 9 | Cei Operating LLC | Katy, TX 77449 | Oil & Gas Operator | Feb 2026 |
| 10 | Central Basin Oil Inv. Inc. | Southlake, TX 76092 | Oil & Gas Operator | Feb 2026 |
| 11 | Centurion Operating Corporation | Rockwall, TX 75087 | Oil & Gas Operator | Feb 2026 |
| 12 | Certified Petroleum Inc. | Mineral Wells, TX 76067 | Oil & Gas Operator | May 2006 |
| 13 | Chambers, R. H. | Abilene, TX 79606 | Oil & Gas Operator | Apr 2006 |
| 14 | Chambers, R. H. LLC | Abilene, TX 79606 | Oil & Gas Operator | Feb 2026 |
| 15 | Chancellor, Earl Sales Co., Inc. | Sweetwater, TX 79556 | Oil & Gas Operator | Feb 2026 |
| 16 | Chapman Oil Company | Midland, TX 79702 | Oil & Gas Operator | Nov 2025 |
| 17 | Cherokee Production Corp. | Greenville, TX 75401 | Oil & Gas Operator | Feb 2026 |
| 18 | Christian Energy, Inc. | Mandeville, LA 70470 | Oil & Gas Operator | Mar 2008 |
| 19 | Circle D Oil & Gas, Inc. | Brownwood, TX 76801 | Oil & Gas Operator | Feb 2026 |
| 20 | City Of Brady | Brady, TX 76825 | Gas Operator | Feb 1998 |
| 21 | CK5 Services LLC | Zephyr, TX 76890 | Oil & Gas Operator | Sep 2025 |
| 22 | Clark, B. C. | Cross Plains, TX 76443 | Oil Operator | Dec 2007 |
| 23 | Coastal Oil & Gas Corp | Houston, TX 77252 | Oil & Gas Operator | Dec 2009 |
| 24 | Coleman & Johnson Oil Company | Brownwood, TX 76801 | Oil & Gas Operator | Feb 2026 |
| 25 | Coleman County Project | Coleman, TX 76834 | Oil & Gas Operator | Oct 2012 |
| 26 | Concho Oilfield Serv & Oper Co. | Eden, TX 76837 | Oil & Gas Operator | Feb 2026 |
| 27 | Connaway Oil & Gas Co. | Brookesmith, TX 76827 | Oil & Gas Operator | Feb 2016 |
| 28 | Conner-Marrs Company | Tulsa, OK 74105 | Oil & Gas Operator | Feb 2026 |
| 29 | Conquistador Petroleum,Inc. | Coleman, TX 76834 | Oil & Gas Operator | Feb 2026 |
| 30 | Copper Ridge Resources LLC | Midland, TX 79710 | Oil Operator | Feb 2025 |
| 31 | Couch Oil & Gas, Inc. | Dallas, TX 75229 | Oil & Gas Operator | Feb 2026 |
| 32 | Couch, Gilbert | Kilgore, TX 75663 | Oil & Gas Operator | Feb 2026 |
| 33 | Cpmak Investments, Inc. | Cross Plains, TX 76443 | Oil Operator | Feb 2026 |
| 34 | Creek Energy, Inc. | Brownwood, TX 76804 | Oil & Gas Operator | Feb 2026 |
| 35 | Crimson Energy Company, LC | Fort Worth, TX 76102 | Oil & Gas Operator | Mar 2004 |
| 36 | Cross Cut Petroleum, LLC | Abilene, TX 79602 | Oil Operator | Feb 2026 |
| 37 | Crossbow Resources, LLC | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 38 | Crosstex Services, L.L.C. | Tuscola, TX 79562 | Oil Operator | Feb 2026 |
| 39 | CRT'S, Inc. | Abilene, TX 79605 | Oil & Gas Operator | Aug 2008 |
| 40 | CWC Oil & Gas, LLC | Abilene, TX 79608 | Oil & Gas Operator | Feb 2026 |
| 41 | CXL Energy LLC | Canada, 00100 | Oil & Gas Operator | Feb 2026 |