| 1 | Caddo Corporation | Austin, TX 78731 | Oil & Gas Operator | Feb 2026 |
| 2 | Cal-Tex Fossil, L.L.C. | Graham, TX 76450 | Oil & Gas Operator | May 2020 |
| 3 | Cameron, Paul E., Jr., Inc. | Montgomery, TX 77356 | Oil & Gas Operator | May 2015 |
| 4 | Campana Petroleum Company | Midland, TX 79705 | Oil & Gas Operator | Feb 2026 |
| 5 | Campsey Minerals | Jacksboro, TX 76458 | Oil & Gas Operator | Feb 2026 |
| 6 | Can-Tex Energy Corp. | Dallas, TX 75231 | Oil & Gas Operator | Nov 2003 |
| 7 | Cannan, Morris | San Antonio, TX 78205 | Oil & Gas Operator | Feb 2026 |
| 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 | Carrizo Oil & Gas, Inc. | Houston, TX 77002 | Oil & Gas Operator | Feb 2026 |
| 11 | Carter Energy Corporation | Duncanville, TX 75138 | Oil & Gas Operator | Sep 2010 |
| 12 | Carter Exploration Company | Corpus Chrsti, TX 78413 | Oil & Gas Operator | Feb 2015 |
| 13 | Cary Oil & Gas, Inc | Decatur, TX 76234 | Oil & Gas Operator | Feb 2026 |
| 14 | Cascade Petroleum Corporation | Quitman, TX 75783 | Oil & Gas Operator | Mar 2002 |
| 15 | Case Resources, LLC | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 16 | Castle Exploration Company Inc | Blue Bell, PA 19422 | Oil & Gas Operator | May 2018 |
| 17 | Catlin, Carl | Jacksboro, TX 76458 | Oil & Gas Operator | Mar 2008 |
| 18 | Catlin, Cecil | Iowa Park, TX 76367 | Oil & Gas Operator | Dec 1995 |
| 19 | Catlin, Cecil, Oil Co. | Iowa Park, TX 76367 | Oil & Gas Operator | Jun 2000 |
| 20 | CD Consulting & Operating Co. | Bridgeport, TX 76426 | Oil & Gas Operator | Feb 2026 |
| 21 | Centex Development | Giddings, TX 78942 | Oil & Gas Operator | Feb 2026 |
| 22 | Central Basin Oil Inv. Inc. | Southlake, TX 76092 | Oil & Gas Operator | Feb 2026 |
| 23 | Century Petroleum, Inc. | Jacksboro, TX 76458 | Oil & Gas Operator | Feb 2026 |
| 24 | Chalker Energy Management II,LLC | Houston, TX 77002 | Oil & Gas Operator | Feb 2008 |
| 25 | Chalker Energy Management,LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2006 |
| 26 | Chance Oil Co., Inc. | Vernon, TX 76385 | Oil & Gas Operator | Nov 2025 |
| 27 | Chandler Oil & Gas, LLC | Beeville, TX 78102 | Oil & Gas Operator | Feb 2026 |
| 28 | Charles D. Self Operating, LLC | Jacksboro, TX 76458 | Oil Operator | Feb 2026 |
| 29 | Chemily Management Company | Cypress, TX 77429 | Oil & Gas Operator | Apr 2023 |
| 30 | Chesapeake Operating LLC | Oklahoma City, OK 73154 | Oil & Gas Operator | Feb 2026 |
| 31 | Chesapeake Operating, Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Sep 2025 |
| 32 | Chevron USA Inc | Midland, TX 79706 | Oil & Gas Operator | Feb 2026 |
| 33 | Chief Oil & Gas LLC | Dallas, TX 75225 | Oil & Gas Operator | Feb 2022 |
| 34 | Chital Petroleum Corp. | Wichita Falls, TX 76308 | Oil & Gas Operator | Feb 2000 |
| 35 | Choice Exploration, Inc. | Irving, TX 75063 | Oil & Gas Operator | Feb 2026 |
| 36 | Cholla Petroleum Inc | Dallas, TX 75225 | Oil & Gas Operator | Feb 2026 |
| 37 | Christie, C. B., Jr. | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 2014 |
| 38 | Circle M Royalty Co., Inc. | Weatherford, TX 76087 | Oil & Gas Operator | May 2007 |
| 39 | Circle Ridge Production, Inc. | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 40 | Citation Oil & Gas Corp | Houston, TX 77269 | Oil & Gas Operator | Feb 2026 |
| 41 | Clay, Charles E. | Jacksboro, TX 76458 | Oil & Gas Operator | Sep 2010 |
| 42 | Clear Brooke Ranches, LLC | Fort Worth, TX 76179 | Oil & Gas Operator | Feb 2026 |
| 43 | Cleo Oil, Inc. | Olney, TX 76374 | Oil & Gas Operator | May 1997 |
| 44 | CLM Operating | Graham, TX 76450 | Oil & Gas Operator | Aug 2017 |
| 45 | Cobra Oil & Gas Corporation | Wichita Falls, TX 76307 | Oil & Gas Operator | Feb 2026 |
| 46 | Coleman Oil & Gas Corp. | Fort Worth, TX 76109 | Oil & Gas Operator | Feb 2026 |
| 47 | Coley, Thomas | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 48 | Colotex Operating, LLC | Aurora, CO 80015 | Oil & Gas Operator | Feb 2026 |
| 49 | Comstock Energy, LLC | Wichita Falls, TX 76301 | Oil & Gas Operator | Feb 2026 |
| 50 | Concord Energy, Inc. | Glen Rose, TX 76043 | Oil & Gas Operator | Feb 2026 |
| 51 | Continental Export Corporation | Bowie, TX 76230 | Oil & Gas Operator | Sep 2013 |
| 52 | Cooke & Montague Oper. Co., Inc. | Flower Mound, TX 75028 | Oil & Gas Operator | Feb 2026 |
| 53 | Cooper Oil & Gas, LLC | Fort Worth, TX 76107 | Oil & Gas Operator | Feb 2026 |
| 54 | Cooper Six C Oil LLC | Ponder, TX 76259 | Oil & Gas Operator | Feb 2026 |
| 55 | Corda Corporation | Wichita Falls, TX 76308 | Oil & Gas Operator | Feb 2026 |
| 56 | Corman, Jack | Dallas, TX 75231 | Oil & Gas Operator | May 2022 |
| 57 | Corpening, Joe F. | Bowie, TX 76230 | Oil & Gas Operator | Oct 2013 |
| 58 | Cottonwood Petroleum Co. | Abilene, TX 79603 | Oil & Gas Operator | Jun 2009 |
| 59 | Covenant Oil Company | Houma, LA 70360 | Oil & Gas Operator | Dec 2015 |
| 60 | Covenant Operating, LLC | Wichita Falls, TX 76308 | Oil Operator | Feb 2026 |
| 61 | Cox Operating Co. | Wichita Falls, TX 76310 | Oil & Gas Operator | Jun 2000 |
| 62 | Cox, Lee Investments Inc. | Mineral Wells, TX 76067 | Oil & Gas Operator | Feb 2026 |
| 63 | CP Exploration TX Operating LLC | Jacksboro, TX 76458 | Oil & Gas Operator | Apr 2017 |
| 64 | Craft Resources, Inc. | Weston, TX 75097 | Oil & Gas Operator | Aug 2003 |
| 65 | Craig, Bob | Olney, TX 76374 | Oil & Gas Operator | Feb 2026 |
| 66 | Craig, Carl | Olney, TX 76374 | Oil & Gas Operator | Feb 2026 |
| 67 | Creswell, Chris | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 68 | Cromeens Petroleum, Inc. | Mineral Wells, TX 76067 | Oil & Gas Operator | Sep 1996 |
| 69 | Crossbow Resources, LLC | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 70 | Crouch Petroleum Company | Amarillo, TX 79110 | Oil & Gas Operator | Mar 2015 |
| 71 | Cso Consulting | Bridgeport, TX 76426 | Oil & Gas Operator | Mar 2020 |
| 72 | Cumming Company, Inc. The | Fort Worth, TX 76116 | Oil & Gas Operator | Feb 2026 |
| 73 | CVS Production, LLC. | Plano, TX 75074 | Oil Operator | Feb 2026 |