| 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 | Aug 2025 |
| 4 | Campana Petroleum Company | Midland, TX 79705 | Oil & Gas Operator | Aug 2025 |
| 5 | Capataz Operating Inc | Midland, TX 79702 | Oil & Gas Operator | Sep 2020 |
| 6 | Caprock Exploration, Inc. | Monahans, TX 79756 | Oil & Gas Operator | Aug 2025 |
| 7 | Caprock Operating, Inc. | Midland, TX 79708 | Oil & Gas Operator | Dec 2007 |
| 8 | Carlow Corp. | Midland, TX 79702 | Oil & Gas Operator | May 2025 |
| 9 | Carrland Oil & Gas Inc. | Prosper, TX 75078 | Oil & Gas Operator | Aug 2025 |
| 10 | Cass Energy Corp | Dallas, TX 75225 | Oil & Gas Operator | Aug 2003 |
| 11 | Cazador Operating, LLC | Midland, TX 79702 | Oil & Gas Operator | Aug 2025 |
| 12 | Celero Energy LP | Midland, TX 79701 | Oil & Gas Operator | May 2011 |
| 13 | Central Texas Operating, Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Aug 2025 |
| 14 | Champlin Exploration, Inc. | Enid, OK 73702 | Oil & Gas Operator | Jun 2025 |
| 15 | Chaparral Energy, L.L.C. | Oklahoma City, OK 73142 | Oil & Gas Operator | Aug 2025 |
| 16 | Chesapeake Operating, Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Apr 2025 |
| 17 | Chevron Midcontinent, L.P. | Midland, TX 79706 | Oil & Gas Operator | Aug 2025 |
| 18 | Chevron USA Inc | Midland, TX 79706 | Oil & Gas Operator | Aug 2025 |
| 19 | Chisos, LTD | Houston, TX 77098 | Oil & Gas Operator | Aug 2025 |
| 20 | Cholla Petroleum Inc | Dallas, TX 75225 | Oil & Gas Operator | Aug 2025 |
| 21 | Cimarex Energy Co. Of Colorado | Midland, TX 79706 | Oil & Gas Operator | Aug 2025 |
| 22 | Citation Oil & Gas Corp. | Houston, TX 77269 | Oil & Gas Operator | Aug 2025 |
| 23 | Civitas Permian Operating, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Aug 2025 |
| 24 | Clear Water Inc. | Midland, TX 79710 | Oil & Gas Operator | Aug 2025 |
| 25 | Coal Creek Energy, LLC | Overland Park, KS 66221 | Oil Operator | Dec 2019 |
| 26 | Coastal Management Corporation | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 27 | Coastal Plains Energy Inc | Oklahoma City, OK 73112 | Oil & Gas Operator | Aug 2025 |
| 28 | Cobalt Operating, LLC | Midland, TX 79710 | Oil & Gas Operator | Feb 2025 |
| 29 | Cobra Oil & Gas Corporation | Wichita Falls, TX 76307 | Oil & Gas Operator | Aug 2025 |
| 30 | Coda Energy, Inc. | Dallas, TX 75231 | Oil & Gas Operator | Aug 1998 |
| 31 | COG Operating LLC | Midland, TX 79701 | Oil & Gas Operator | Aug 2025 |
| 32 | Collins & Ware, Inc. | Midland, TX 79701 | Oil & Gas Operator | Aug 2003 |
| 33 | Concho Resources Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Mar 2004 |
| 34 | Conoco Inc. | Houston, TX 77252 | Oil & Gas Operator | Mar 2015 |
| 35 | ConocoPhillips Company | Midland, TX 79701 | Oil & Gas Operator | Aug 2025 |
| 36 | Consolidated Oil & Gas Inc | Wichita, KS 67202 | Oil & Gas Operator | Dec 2012 |
| 37 | Copper Ridge Resources LLC | Midland, TX 79710 | Oil Operator | Feb 2025 |
| 38 | Coquina Oil Corporation | Houston, TX 77227 | Oil & Gas Operator | Mar 2015 |
| 39 | Costilla Energy Inc | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 40 | Costilla Petroleum Corporation | Midland, TX 79702 | Oil & Gas Operator | Mar 2015 |
| 41 | Cottonwood Resources, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Aug 2003 |
| 42 | Cox, John L. | Midland, TX 79702 | Oil & Gas Operator | Mar 2015 |
| 43 | CR3 Operating Company, L.L.C. | Houston, TX 77251 | Oil & Gas Operator | Aug 2025 |
| 44 | Creston Petroleum Corp. | Dallas, TX 75380 | Oil & Gas Operator | Aug 2025 |
| 45 | Cross Timbers Operating Co | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2025 |
| 46 | Crossfoot Operating, LLC | Houston, TX 77227 | Oil & Gas Operator | Aug 2025 |
| 47 | Crosstex Services, L.L.C. | Tuscola, TX 79562 | Oil Operator | Aug 2025 |
| 48 | Crownquest Operating, LLC | Midland, TX 79710 | Oil & Gas Operator | Aug 2025 |
| 49 | Custer & Wright Operating, Inc. | Midland, TX 79702 | Oil & Gas Operator | Aug 2025 |
| 50 | Cutbow Operating, LLC | Midland, TX 79705 | Oil & Gas Operator | Aug 2025 |