| 1 | C & C Operating, LLC | Iowa Park, TX 76367 | Oil Operator | Feb 2026 |
| 2 | C & G Transports, Inc. | Woodson, TX 76491 | Oil & Gas Operator | Feb 2026 |
| 3 | C & M Operating Company | Graham, TX 76450 | Oil & Gas Operator | Nov 2025 |
| 4 | C.O.W. Operating Company | Graham, TX 76450 | Oil Operator | Feb 2026 |
| 5 | Cabot Oil & Gas Corporation | Houston, TX 77024 | Oil & Gas Operator | Nov 2025 |
| 6 | Caddo Corporation | Austin, TX 78731 | Oil & Gas Operator | Feb 2026 |
| 7 | Cantrell Oil Co. | Elbert, TX 76359 | Oil & Gas Operator | Aug 2003 |
| 8 | Caribou Operating Co. | Granbury, TX 76048 | Oil & Gas Operator | Mar 2010 |
| 9 | Caribou Operating, Inc. | Granbury, TX 76048 | Oil & Gas Operator | Feb 2026 |
| 10 | Carter Energy Corporation | Duncanville, TX 75138 | Oil & Gas Operator | Sep 2010 |
| 11 | Cary Oil & Gas, Inc | Decatur, TX 76234 | Oil & Gas Operator | Feb 2026 |
| 12 | Casador Oil & Gas Co. | Keller, TX 76248 | Gas Operator | Aug 2003 |
| 13 | Case Resources, LLC | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 14 | Casteel, Hoyt F. | Graham, TX 76450 | Oil & Gas Operator | Nov 2001 |
| 15 | CD Consulting & Operating Co. | Bridgeport, TX 76426 | Oil & Gas Operator | Feb 2026 |
| 16 | Celero Energy LP | Midland, TX 79701 | Oil & Gas Operator | May 2011 |
| 17 | Centex Development | Giddings, TX 78942 | Oil & Gas Operator | Feb 2026 |
| 18 | Central Crude Corp. | Wichita, KS 67206 | Oil Operator | Mar 2014 |
| 19 | CH-Seon Inc. | Dallas, TX 75251 | Oil & Gas Operator | Feb 2026 |
| 20 | Chance Oil Co., Inc. | Vernon, TX 76385 | Oil & Gas Operator | Nov 2025 |
| 21 | Chardonnay Operating, Inc. | Olney, TX 76374 | Oil & Gas Operator | Dec 1996 |
| 22 | Charis Oil & Gas, LLC | Addison, TX 75001 | Oil & Gas Operator | Feb 2026 |
| 23 | Chesapeake Operating, Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Sep 2025 |
| 24 | Chestnut Operating, LLC | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 25 | Chevron USA Inc | Midland, TX 79706 | Oil & Gas Operator | Feb 2026 |
| 26 | Chital Petroleum Corp. | Wichita Falls, TX 76308 | Oil & Gas Operator | Feb 2000 |
| 27 | Cholla Petroleum Inc | Dallas, TX 75225 | Oil & Gas Operator | Feb 2026 |
| 28 | Chroma Operating, Inc. | Washington, DC 20036 | Oil & Gas Operator | Jun 2016 |
| 29 | Cico Oil & Gas Company | Houston, TX 77057 | Oil & Gas Operator | Aug 2019 |
| 30 | Circle M Royalty Co., Inc. | Weatherford, TX 76087 | Oil & Gas Operator | May 2007 |
| 31 | Circle Ridge Production, Inc. | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 32 | Citori Oil Company | Wichita Falls, TX 76301 | Oil & Gas Operator | Nov 2004 |
| 33 | Citori Oil Company, LLC | Wichita Falls, TX 76308 | Oil & Gas Operator | May 2014 |
| 34 | CK Operating Company, LLC | Wichita Falls, TX 76308 | Oil Operator | Feb 2026 |
| 35 | Clark Operating | Wichita Falls, TX 76308 | Oil & Gas Operator | Aug 2003 |
| 36 | Cleo Oil, Inc. | Olney, TX 76374 | Oil & Gas Operator | May 1997 |
| 37 | Cleveland Oil & Gas | Wichita Falls, TX 76308 | Oil Operator | Feb 2026 |
| 38 | Clifton, B.W. | Graham, TX 76450 | Oil & Gas Operator | Mar 2000 |
| 39 | CLM Operating | Graham, TX 76450 | Oil & Gas Operator | Aug 2017 |
| 40 | Coastal Oil & Gas Corp | Houston, TX 77252 | Oil & Gas Operator | Dec 2009 |
| 41 | Cobra Oil & Gas Corporation | Wichita Falls, TX 76307 | Oil & Gas Operator | Feb 2026 |
| 42 | Coda Energy, Inc. | Dallas, TX 75231 | Oil & Gas Operator | Aug 1998 |
| 43 | Coley, Thomas | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 44 | Con-Lin Oil Co. | Graham, TX 76450 | Oil & Gas Operator | Nov 2017 |
| 45 | Concord Operating Incorporated | Horseshoe Bay, TX 78657 | Oil & Gas Operator | Dec 2008 |
| 46 | Contour Oil & Gas, LLC | Abilene, TX 79602 | Oil & Gas Operator | Dec 2015 |
| 47 | Cooke & Montague Oper. Co., Inc. | Flower Mound, TX 75028 | Oil & Gas Operator | Feb 2026 |
| 48 | Cooper Oil & Gas, Inc. | Fort Worth, TX 76102 | Oil & Gas Operator | May 2010 |
| 49 | Cooper Oil & Gas, LLC | Fort Worth, TX 76107 | Oil & Gas Operator | Feb 2026 |
| 50 | Cooper Operating | Olney, TX 76374 | Oil Operator | Apr 2007 |
| 51 | Corda Corporation | Wichita Falls, TX 76308 | Oil & Gas Operator | Feb 2026 |
| 52 | Corpening, Joe F. | Bowie, TX 76230 | Oil & Gas Operator | Oct 2013 |
| 53 | Cottonwood Petroleum Co. | Abilene, TX 79603 | Oil & Gas Operator | Jun 2009 |
| 54 | Covenant Oil Company | Houma, LA 70360 | Oil & Gas Operator | Dec 2015 |
| 55 | Covenant Operating, LLC | Wichita Falls, TX 76308 | Oil Operator | Feb 2026 |
| 56 | Craft Resources, Inc. | Weston, TX 75097 | Oil & Gas Operator | Aug 2003 |
| 57 | Craig Oil, Inc. | Olney, TX 76374 | Oil Operator | Feb 2026 |
| 58 | Craig, Bob | Olney, TX 76374 | Oil & Gas Operator | Feb 2026 |
| 59 | Craig, Carl | Olney, TX 76374 | Oil & Gas Operator | Feb 2026 |
| 60 | Craig, Robert A. | Olney, TX 76374 | Oil Operator | Feb 2026 |
| 61 | Creswell, Chris | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 62 | Creswell, R.G. | Graham, TX 76450 | Oil & Gas Operator | Feb 2013 |
| 63 | Crimson Energy Company, LC | Fort Worth, TX 76102 | Oil & Gas Operator | Mar 2004 |
| 64 | CRJ Bond Operations, LLC | Graham, TX 76450 | Oil Operator | Feb 2026 |
| 65 | Crossbow Resources, LLC | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 66 | Crownquest Operating, LLC | Midland, TX 79710 | Oil & Gas Operator | Feb 2026 |
| 67 | Crutcher Oil Properties | Wichita Falls, TX 76301 | Oil & Gas Operator | Feb 2026 |
| 68 | Cumberland Petroleum, Inc. II | Weatherford, TX 76086 | Oil & Gas Operator | May 1997 |
| 69 | Cwic, Inc. | Granbury, TX 76049 | Oil & Gas Operator | Feb 2026 |