| 1 | C & N Oil Co | Monahans, TX 79756 | Oil Operator | Nov 2025 |
| 2 | Cabal Energy Corporation | Midland, TX 79701 | Oil & Gas Operator | Nov 2025 |
| 3 | Callon (Permian) LLC | Houston, TX 77042 | Oil & Gas Operator | Jul 2024 |
| 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 | Caprock Exploration, Inc. | Monahans, TX 79756 | Oil & Gas Operator | Nov 2025 |
| 7 | Cardwell Oil Corporation | Midland, TX 79710 | Oil & Gas Operator | Nov 2025 |
| 8 | Carrizo (Permian) LLC | Houston, TX 77042 | Oil & Gas Operator | Jan 2020 |
| 9 | Cazador Operating, LLC | Midland, TX 79702 | Oil & Gas Operator | Nov 2025 |
| 10 | Celero Energy LP | Midland, TX 79701 | Oil & Gas Operator | May 2011 |
| 11 | Centennial Resource Prod, LLC | Denver, CO 80202 | Oil & Gas Operator | Aug 2023 |
| 12 | Centerfire Resources | Springerville, AZ 85938 | Oil & Gas Operator | Nov 2025 |
| 13 | Chance Properties Co. | Kermit, TX 79745 | Oil & Gas Operator | Nov 2025 |
| 14 | Chaparral (USA) Energy, Inc. | Oklahoma City, OK 73114 | Oil & Gas Operator | Sep 2002 |
| 15 | Chaparral Energy, L.L.C. | Oklahoma City, OK 73142 | Oil & Gas Operator | Nov 2025 |
| 16 | Chesapeake Operating, Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Jun 2025 |
| 17 | Chevron Midcontinent, L.P. | Midland, TX 79706 | Oil & Gas Operator | Nov 2025 |
| 18 | Chevron USA Inc | Midland, TX 79706 | Oil & Gas Operator | Nov 2025 |
| 19 | Chi Operating, Inc. | Midland, TX 79702 | Oil & Gas Operator | Nov 2025 |
| 20 | Chisos Operating, Inc. | Midland, TX 79702 | Oil & Gas Operator | Nov 2025 |
| 21 | Chuza Operating | Midland, TX 79710 | Oil & Gas Operator | Sep 2006 |
| 22 | Cimarex Energy Co | Midland, TX 79706 | Oil & Gas Operator | Nov 2025 |
| 23 | Cimarex Energy Co. Of Colorado | Midland, TX 79706 | Oil & Gas Operator | Nov 2025 |
| 24 | Citation Oil & Gas Corp | Houston, TX 77269 | Oil & Gas Operator | Nov 2025 |
| 25 | Clayton Petroleum Corporation | Midland, TX 79702 | Oil & Gas Operator | May 2004 |
| 26 | Cliffwood Production Co. | Houston, TX 77090 | Oil & Gas Operator | Aug 2013 |
| 27 | CLR Secondary Recovery, LLC | Wichita Falls, TX 76306 | Oil & Gas Operator | Nov 2025 |
| 28 | CML Exploration, LLC | Austin, TX 78746 | Oil & Gas Operator | Nov 2025 |
| 29 | Coastal Management Corporation | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 30 | Coastal Oil & Gas Corp | Houston, TX 77252 | Oil & Gas Operator | Dec 2009 |
| 31 | Cochise Energy Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 32 | COG Operating LLC | Midland, TX 79701 | Oil & Gas Operator | Nov 2025 |
| 33 | Colgate Operating, LLC | Midland, TX 79701 | Oil & Gas Operator | Apr 2024 |
| 34 | Collins & Ware, Inc. | Midland, TX 79701 | Oil & Gas Operator | Aug 2003 |
| 35 | Concho Oil & Gas Corp. | Midland, TX 79701 | Oil & Gas Operator | May 2003 |
| 36 | Concho Oilfield Serv & Oper Co. | Eden, TX 76837 | Oil & Gas Operator | Nov 2025 |
| 37 | Concho Resources Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Mar 2004 |
| 38 | Conoco Inc | Houston, TX 77252 | Oil & Gas Operator | Mar 2015 |
| 39 | ConocoPhillips Company | Midland, TX 79701 | Oil & Gas Operator | Nov 2025 |
| 40 | Contango Resources LLC | Andrews, TX 79714 | Oil & Gas Operator | Nov 2025 |
| 41 | Contango Resources, Inc. | Houston, TX 77002 | Oil & Gas Operator | Sep 2025 |
| 42 | Continental Resources, Inc. | Oklahoma City, OK 73126 | Oil & Gas Operator | Nov 2025 |
| 43 | Coquina Oil Corporation | Houston, TX 77227 | Oil & Gas Operator | Mar 2015 |
| 44 | Corbell, W. D. | Dublin, TX 76446 | Oil & Gas Operator | Dec 2001 |
| 45 | Core E & P Corp. | Victoria, TX 77902 | Oil & Gas Operator | Nov 2025 |
| 46 | Cory, Kenneth W. LTD. | Bellaire, TX 77401 | Oil & Gas Operator | Nov 2025 |
| 47 | Costilla Energy, Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 48 | Costilla Petroleum Corporation | Midland, TX 79702 | Oil & Gas Operator | Mar 2015 |
| 49 | Cove Petroleum Corporation | Shreveport, LA 71101 | Oil & Gas Operator | Jun 2020 |
| 50 | Cox Exploration, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Nov 1999 |
| 51 | Cox, John L. | Midland, TX 79702 | Oil & Gas Operator | Mar 2015 |
| 52 | Cremson Oil & Gas | Coleman, TX 76834 | Oil & Gas Operator | Nov 2025 |
| 53 | Cross Timbers Energy, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Nov 2025 |
| 54 | Crossing Rocks Energy, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Mar 2018 |
| 55 | Crownquest Operating, LLC | Midland, TX 79710 | Oil & Gas Operator | Nov 2025 |
| 56 | Crystal River Oil & Gas LLC | Snowmass VLG., CO 81615 | Oil & Gas Operator | Jan 2023 |
| 57 | Custer & Wright Operating, Inc. | Midland, TX 79702 | Oil & Gas Operator | Nov 2025 |