| 1 | Callaway Production Co., Inc. | Midland, TX 79701 | Oil & Gas Operator | Jan 1996 |
| 2 | Callon Petroleum Operating Co | Houston, TX 77042 | Oil & Gas Operator | Jul 2024 |
| 3 | Cambrian Management LTD | McCaulley, TX 79534 | Oil & Gas Operator | Oct 2025 |
| 4 | Candelero Oil & Gas Company | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 5 | Capataz Operating Inc | Midland, TX 79702 | Oil & Gas Operator | Sep 2020 |
| 6 | Carson Buckles Exploration LLC | Midland, TX 79710 | Oil & Gas Operator | Oct 2025 |
| 7 | Caths Oil & Gas | Midland, TX 79706 | Oil & Gas Operator | Oct 2025 |
| 8 | Caza Operating, LLC | Midland, TX 79701 | Oil & Gas Operator | Oct 2025 |
| 9 | Cedar Oil Company | Midland, TX 79707 | Oil & Gas Operator | Oct 2025 |
| 10 | Celero Energy LP | Midland, TX 79701 | Oil & Gas Operator | May 2011 |
| 11 | Centennial Energy Corp. | Big Lake, TX 76932 | Oil & Gas Operator | Jan 1997 |
| 12 | Chanc West, Inc. | Iraan, TX 79744 | Oil & Gas Operator | Mar 1995 |
| 13 | Chaparral (USA) Energy, Inc. | Oklahoma City, OK 73114 | Oil & Gas Operator | Sep 2002 |
| 14 | Chaparral Energy, L.L.C. | Oklahoma City, OK 73142 | Oil & Gas Operator | Oct 2025 |
| 15 | Chesapeake Operating, Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Jun 2025 |
| 16 | Chevron Midcontinent, L.P. | Midland, TX 79706 | Oil & Gas Operator | Oct 2025 |
| 17 | Chevron USA Inc | Midland, TX 79706 | Oil & Gas Operator | Oct 2025 |
| 18 | Chisos Operating, Inc. | Midland, TX 79702 | Oil & Gas Operator | Oct 2025 |
| 19 | Cholla Petroleum Inc | Dallas, TX 75225 | Oil & Gas Operator | Oct 2025 |
| 20 | Cimarex Energy Co. Of Colorado | Midland, TX 79706 | Oil & Gas Operator | Oct 2025 |
| 21 | Clark Oil Co. | Dallas, TX 75360 | Oil & Gas Operator | Oct 2025 |
| 22 | Clark, John M., Inc. | Midland, TX 79704 | Oil & Gas Operator | Oct 2025 |
| 23 | Clayton Petroleum Corporation | Midland, TX 79702 | Oil & Gas Operator | May 2004 |
| 24 | Clayton Williams Energy, Inc. | Houston, TX 77070 | Oil & Gas Operator | Apr 2017 |
| 25 | CLC Operations Inc | Midland, TX 79701 | Oil & Gas Operator | Mar 1997 |
| 26 | Clide Oil Corp. | Iraan, TX 79744 | Oil & Gas Operator | Nov 2015 |
| 27 | Cochise Energy Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 28 | Cockrell Production Co., Inc. | Irving, TX 75014 | Oil & Gas Operator | Oct 2025 |
| 29 | Coda Energy, Inc. | Dallas, TX 75231 | Oil & Gas Operator | Aug 1998 |
| 30 | Coert Holdings 1 LLC | Greenwich, CT 06830 | Oil & Gas Operator | Dec 2021 |
| 31 | COG Operating LLC | Midland, TX 79701 | Oil & Gas Operator | Oct 2025 |
| 32 | Collins & Ware, Inc. | Midland, TX 79701 | Oil & Gas Operator | Aug 2003 |
| 33 | Comstock Oil & Gas, Inc. | Frisco, TX 75034 | Oil & Gas Operator | Dec 2012 |
| 34 | Comstock Oil & Gas, LP | Frisco, TX 75034 | Oil & Gas Operator | Aug 2019 |
| 35 | Concho Exploration Inc | Oklahoma City, OK 73154 | Oil & Gas Operator | Mar 2015 |
| 36 | Concho Resources Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Mar 2004 |
| 37 | Conoco Inc. | Houston, TX 77252 | Oil & Gas Operator | Mar 2015 |
| 38 | ConocoPhillips Company | Midland, TX 79701 | Oil & Gas Operator | Oct 2025 |
| 39 | Contango Resources LLC | Andrews, TX 79714 | Oil & Gas Operator | Oct 2025 |
| 40 | Contango Resources, Inc. | Houston, TX 77002 | Oil & Gas Operator | Aug 2025 |
| 41 | Convest Energy Corporation | Houston, TX 77057 | Oil & Gas Operator | Sep 2014 |
| 42 | Cooper Production Company | New Braunfels, TX 78132 | Oil & Gas Operator | Sep 2021 |
| 43 | Costilla Energy Inc | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 44 | Costilla Petroleum Corporation | Midland, TX 79702 | Oil & Gas Operator | Mar 2015 |
| 45 | Cox, John L. | Midland, TX 79702 | Oil & Gas Operator | Mar 2015 |
| 46 | Cox, Martin Regan | Irving, TX 75014 | Oil & Gas Operator | Oct 2025 |
| 47 | Cox, Robert G. & Associates,Inc. | Dallas, TX 75225 | Oil & Gas Operator | Feb 1994 |
| 48 | Cross Timbers Operating Co | Fort Worth, TX 76102 | Oil & Gas Operator | Jun 2025 |
| 49 | Crownquest Operating, LLC | Midland, TX 79710 | Oil & Gas Operator | Oct 2025 |
| 50 | Crystal Oil Company | Shreveport, LA 71120 | Oil & Gas Operator | Jul 1995 |
| 51 | Cumming Company, Inc. The | Fort Worth, TX 76116 | Oil & Gas Operator | Oct 2025 |
| 52 | Custer & Wright Operating, Inc. | Midland, TX 79702 | Oil & Gas Operator | Oct 2025 |
| 53 | Cwoc | Big Spring, TX 79721 | Oil & Gas Operator | Oct 2025 |
| 54 | Cyclone Exploration, Inc. | Florence, CO 81226 | Oil & Gas Operator | Oct 2025 |