| 1 | Cabana Oil Corp. | Abilene, TX 79608 | Oil & Gas Operator | Feb 2006 |
| 2 | Cada Operating, Inc. | Wichita Falls, TX 76307 | Oil & Gas Operator | Nov 2004 |
| 3 | Caminar Oil & Gas, LLC | Abilene, TX 79602 | Oil & Gas Operator | Aug 2024 |
| 4 | Campana Petroleum Company | Midland, TX 79705 | Oil & Gas Operator | Oct 2025 |
| 5 | Canyon Exploration Co. | Amarillo, TX 79105 | Oil & Gas Operator | Jun 2025 |
| 6 | Capataz Operating Inc | Midland, TX 79702 | Oil & Gas Operator | Sep 2020 |
| 7 | Caraway Operating Co. | San Angelo, TX 76902 | Oil & Gas Operator | Oct 2025 |
| 8 | Carburante Exploration Co, LTD. | Granbury, TX 76048 | Oil & Gas Operator | Oct 2025 |
| 9 | Castle Gas Corporation | San Angelo, TX 76902 | Oil & Gas Operator | Oct 2014 |
| 10 | Centaur Petroleum Corporation | Fort Worth, TX 76101 | Oil & Gas Operator | Oct 2025 |
| 11 | Charter Petroleum Company | Abilene, TX 79605 | Oil & Gas Operator | Oct 2025 |
| 12 | Chevron Midcontinent, L.P. | Midland, TX 79706 | Oil & Gas Operator | Oct 2025 |
| 13 | Cholla Petroleum Inc | Dallas, TX 75225 | Oil & Gas Operator | Oct 2025 |
| 14 | Cimarex Energy Co. Of Colorado | Midland, TX 79706 | Oil & Gas Operator | Oct 2025 |
| 15 | Clear Fork, Incorporated | Abilene, TX 79604 | Oil & Gas Operator | Oct 2025 |
| 16 | Clear Water Inc. | Midland, TX 79710 | Oil & Gas Operator | Oct 2025 |
| 17 | Clearfork Operating LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Aug 2011 |
| 18 | Clearfork Production, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Nov 2018 |
| 19 | Co Energy | Benbrook, TX 76126 | Oil & Gas Operator | Oct 2025 |
| 20 | Coastal Oil & Gas Corporation | Houston, TX 77252 | Oil & Gas Operator | Dec 2009 |
| 21 | Cobalt Operating, LLC | Midland, TX 79710 | Oil & Gas Operator | Feb 2025 |
| 22 | Cockrell Production Co., Inc. | Irving, TX 75014 | Oil & Gas Operator | Oct 2025 |
| 23 | COG Operating LLC | Midland, TX 79701 | Oil & Gas Operator | Oct 2025 |
| 24 | Coleville Petroleum Company | McAllen, TX 78503 | Oil & Gas Operator | Mar 1996 |
| 25 | Colo Exploration Company, Inc. | Benbrook, TX 76126 | Oil & Gas Operator | Oct 2025 |
| 26 | Compass Energy Operating, LLC | Tulsa, OK 74136 | Oil & Gas Operator | Oct 2025 |
| 27 | Compass Operating, L.L.C. | Midland, TX 79702 | Oil & Gas Operator | Oct 2025 |
| 28 | Concho Oilfield Serv & Oper Co. | Eden, TX 76837 | Oil & Gas Operator | Oct 2025 |
| 29 | Conoco Inc. | Houston, TX 77252 | Oil & Gas Operator | Mar 2015 |
| 30 | Contango Resources LLC | Andrews, TX 79714 | Oil & Gas Operator | Oct 2025 |
| 31 | Contango Resources, Inc. | Houston, TX 77002 | Oil & Gas Operator | Aug 2025 |
| 32 | Copper Ridge Resources LLC | Midland, TX 79710 | Oil Operator | Feb 2025 |
| 33 | Core Petro, LLC | Abilene, TX 79608 | Oil & Gas Operator | Oct 2025 |
| 34 | Costilla Energy Inc | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 35 | Costilla Petroleum Corporation | Midland, TX 79702 | Oil & Gas Operator | Mar 2015 |
| 36 | Cox, John L. | Midland, TX 79702 | Oil & Gas Operator | Mar 2015 |
| 37 | Cross Timbers Operating Co | Fort Worth, TX 76102 | Oil & Gas Operator | Jun 2025 |
| 38 | Crosstex Services, L.L.C. | Tuscola, TX 79562 | Oil Operator | Oct 2025 |
| 39 | Crownquest Operating, LLC | Midland, TX 79710 | Oil & Gas Operator | Oct 2025 |
| 40 | Cumming Company, Inc. The | Fort Worth, TX 76116 | Oil & Gas Operator | Oct 2025 |
| 41 | Cwoc | Big Spring, TX 79721 | Oil & Gas Operator | Oct 2025 |