| 1 | C & S Oil Company | Odessa, TX 79763 | Oil & Gas Operator | Nov 2019 |
| 2 | C Rose Oil Co. | Midland, TX 79708 | Oil & Gas Operator | Jun 2025 |
| 3 | Cal-Mon Oil Company | Midland, TX 79701 | Oil & Gas Operator | Oct 2025 |
| 4 | Callon Permian II, LLC | Houston, TX 77056 | Oil & Gas Operator | Jul 2024 |
| 5 | Callon Petroleum Operating Co | Houston, TX 77042 | Oil & Gas Operator | Jul 2024 |
| 6 | Camterra Resources, Inc. | Marshall, TX 75671 | Oil & Gas Operator | Oct 2025 |
| 7 | Cannan, Morris | San Antonio, TX 78205 | Oil & Gas Operator | Oct 2025 |
| 8 | Capataz Operating Inc | Midland, TX 79702 | Oil & Gas Operator | Sep 2020 |
| 9 | Capps, R. Oil Corp. | Midland, TX 79704 | Oil & Gas Operator | Oct 2002 |
| 10 | Caprock Exploration, Inc. | Monahans, TX 79756 | Oil & Gas Operator | Oct 2025 |
| 11 | Carlow Corp. | Midland, TX 79702 | Oil & Gas Operator | May 2025 |
| 12 | Cavalcade Operating Company LLC | Kilgore, TX 75663 | Oil & Gas Operator | Dec 2017 |
| 13 | Cazador Operating, LLC | Midland, TX 79702 | Oil & Gas Operator | Oct 2025 |
| 14 | Ceja Corporation | Tulsa, OK 74172 | Oil & Gas Operator | Jul 2025 |
| 15 | Celero Energy LP | Midland, TX 79701 | Oil & Gas Operator | May 2011 |
| 16 | CH-Seon Inc. | Dallas, TX 75251 | Oil & Gas Operator | Oct 2025 |
| 17 | Champion Lone Star Operating,LLC | Midland, TX 79702 | Oil & Gas Operator | Mar 2020 |
| 18 | Champlin Exploration, Inc. | Enid, OK 73702 | Oil & Gas Operator | Jul 2025 |
| 19 | Chance Properties Co. | Kermit, TX 79745 | Oil & Gas Operator | Oct 2025 |
| 20 | Chaparral (USA) Energy, Inc. | Oklahoma City, OK 73114 | Oil & Gas Operator | Sep 2002 |
| 21 | Chaparral Energy, L.L.C. | Oklahoma City, OK 73142 | Oil & Gas Operator | Oct 2025 |
| 22 | Chapman Oil Company | Midland, TX 79702 | Oil & Gas Operator | Jun 2025 |
| 23 | Chase Avenue Corporation, The | Dallas, TX 75219 | Oil & Gas Operator | Jun 2003 |
| 24 | Chesapeake Operating, Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Jun 2025 |
| 25 | Chevron Midcontinent, L.P. | Midland, TX 79706 | Oil & Gas Operator | Oct 2025 |
| 26 | Chevron USA Inc | Midland, TX 79706 | Oil & Gas Operator | Oct 2025 |
| 27 | Chroma Operating, Inc. | Washington, DC 20036 | Oil & Gas Operator | Jun 2016 |
| 28 | Cimarex Energy Co. | Midland, TX 79706 | Oil & Gas Operator | Oct 2025 |
| 29 | Cimarex Energy Co. Of Colorado | Midland, TX 79706 | Oil & Gas Operator | Oct 2025 |
| 30 | Citation Oil & Gas Corp. | Houston, TX 77269 | Oil & Gas Operator | Oct 2025 |
| 31 | Clayton Petroleum Corporation | Midland, TX 79702 | Oil & Gas Operator | May 2004 |
| 32 | Clear Brooke Ranches, LLC | Fort Worth, TX 76179 | Oil & Gas Operator | Oct 2025 |
| 33 | Cobalt Energy LLC | Wichita, KS 67202 | Oil & Gas Operator | Jun 2025 |
| 34 | Cochise Energy Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 35 | Cody Company | Amarillo, TX 79121 | Oil & Gas Operator | Mar 2020 |
| 36 | Coert Holdings 1 LLC | Greenwich, CT 06830 | Oil & Gas Operator | Dec 2021 |
| 37 | COG Operating LLC | Midland, TX 79701 | Oil & Gas Operator | Oct 2025 |
| 38 | Colgate Operating, LLC | Midland, TX 79701 | Oil & Gas Operator | Apr 2024 |
| 39 | Collins & Ware, Inc. | Midland, TX 79701 | Oil & Gas Operator | Aug 2003 |
| 40 | Comal Operating LLC | San Antonio, TX 78217 | Oil & Gas Operator | Oct 2025 |
| 41 | Concho Resources Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Mar 2004 |
| 42 | Conoco Inc. | Houston, TX 77252 | Oil & Gas Operator | Mar 2015 |
| 43 | ConocoPhillips Company | Midland, TX 79701 | Oil & Gas Operator | Oct 2025 |
| 44 | Continental Resources, Inc. | Oklahoma City, OK 73126 | Oil & Gas Operator | Oct 2025 |
| 45 | Coquina Oil Corporation | Houston, TX 77227 | Oil & Gas Operator | Mar 2015 |
| 46 | Corda Corporation | Wichita Falls, TX 76308 | Oil & Gas Operator | Oct 2025 |
| 47 | Corkran Energy, LP | Ignacio, CO 81137 | Oil & Gas Operator | May 2013 |
| 48 | Costilla Energy Inc | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 49 | Costilla Petroleum Corporation | Midland, TX 79702 | Oil & Gas Operator | Mar 2015 |
| 50 | Crabtree And Brown, Inc. | Kermit, TX 79745 | Oil & Gas Operator | Feb 1995 |
| 51 | Crownquest Operating, LLC | Midland, TX 79710 | Oil & Gas Operator | Oct 2025 |
| 52 | Custer & Wright Operating, Inc. | Midland, TX 79702 | Oil & Gas Operator | Oct 2025 |