| 1 | Campana Petroleum Company | Midland, TX 79705 | Oil & Gas Operator | Oct 2025 |
| 2 | Capps, R. Oil Corp. | Midland, TX 79704 | Oil & Gas Operator | Oct 2002 |
| 3 | Caraway Operating Co. | San Angelo, TX 76902 | Oil & Gas Operator | Oct 2025 |
| 4 | Cedyco Corporation | Houston, TX 77227 | Oil & Gas Operator | Nov 2008 |
| 5 | Chambers Operating, Inc. | Westbrook, TX 79565 | Oil & Gas Operator | Mar 2006 |
| 6 | Chaparral Energy, L.L.C. | Oklahoma City, OK 73142 | Oil & Gas Operator | Oct 2025 |
| 7 | Chesapeake Operating, Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Jun 2025 |
| 8 | Chevron Midcontinent, L.P. | Midland, TX 79706 | Oil & Gas Operator | Oct 2025 |
| 9 | Chevron USA Inc | Midland, TX 79706 | Oil & Gas Operator | Oct 2025 |
| 10 | Cimarex Energy Co. Of Colorado | Midland, TX 79706 | Oil & Gas Operator | Oct 2025 |
| 11 | Claron Corporation | Houston, TX 77219 | Oil & Gas Operator | Oct 2025 |
| 12 | Clear Water Inc. | Midland, TX 79710 | Oil & Gas Operator | Oct 2025 |
| 13 | CLR Secondary Recovery, LLC | Wichita Falls, TX 76306 | Oil & Gas Operator | Oct 2025 |
| 14 | Coastal Oil & Gas Corporation | Houston, TX 77252 | Oil & Gas Operator | Dec 2009 |
| 15 | Cobra Oil & Gas Corporation | Wichita Falls, TX 76307 | Oil & Gas Operator | Oct 2025 |
| 16 | Cochise Energy Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 17 | Cody Energy LLC | Houston, TX 77024 | Oil & Gas Operator | Jun 2020 |
| 18 | Cody Energy, Inc. | Houston, TX 77077 | Oil & Gas Operator | Aug 2025 |
| 19 | COG Operating LLC | Midland, TX 79701 | Oil & Gas Operator | Oct 2025 |
| 20 | Collins & Ware, Inc. | Midland, TX 79701 | Oil & Gas Operator | Aug 2003 |
| 21 | Compass Energy Operating, LLC | Tulsa, OK 74136 | Oil & Gas Operator | Oct 2025 |
| 22 | Comstock Energy, LLC | Wichita Falls, TX 76301 | Oil & Gas Operator | Oct 2025 |
| 23 | Concho Oilfield Serv & Oper Co. | Eden, TX 76837 | Oil & Gas Operator | Oct 2025 |
| 24 | Conoco Inc. | Houston, TX 77252 | Oil & Gas Operator | Mar 2015 |
| 25 | Copper Ridge Resources LLC | Midland, TX 79710 | Oil Operator | Feb 2025 |
| 26 | Costilla Petroleum Corporation | Midland, TX 79702 | Oil & Gas Operator | Mar 2015 |
| 27 | Cox, John L. | Midland, TX 79702 | Oil & Gas Operator | Mar 2015 |
| 28 | Cross Timbers Operating Co | Fort Worth, TX 76102 | Oil & Gas Operator | Jun 2025 |
| 29 | Crosstex Services, L.L.C. | Tuscola, TX 79562 | Oil Operator | Oct 2025 |
| 30 | Crownquest Operating, LLC | Midland, TX 79710 | Oil & Gas Operator | Oct 2025 |
| 31 | Cumming Company, Inc. The | Fort Worth, TX 76116 | Oil & Gas Operator | Oct 2025 |
| 32 | Cwoc | Big Spring, TX 79721 | Oil & Gas Operator | Oct 2025 |