| 1 | Cambrian Management LTD | McCaulley, TX 79534 | Oil & Gas Operator | Jun 2025 |
| 2 | Capataz Operating Inc | Midland, TX 79702 | Oil & Gas Operator | Sep 2020 |
| 3 | Caprock Operating, Inc. | Midland, TX 79708 | Oil & Gas Operator | Dec 2007 |
| 4 | Capstone Natural Resources, LLC | Tulsa, OK 74136 | Oil & Gas Operator | May 2015 |
| 5 | Capturepoint LLC | Allen, TX 75013 | Oil & Gas Operator | Jun 2025 |
| 6 | Carlow Corp. | Midland, TX 79702 | Oil & Gas Operator | Mar 2025 |
| 7 | Cathey Petroleum Company, Inc. | Big Spring, TX 79720 | Oil & Gas Operator | Apr 2008 |
| 8 | Celero Energy LP | Midland, TX 79701 | Oil & Gas Operator | May 2011 |
| 9 | Central Texas Operating, Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Jun 2025 |
| 10 | Cet Energy Corporation | Spring, TX 77391 | Oil & Gas Operator | Nov 2003 |
| 11 | CGS Operating, LLC | Kilgore, TX 75663 | Oil & Gas Operator | May 2023 |
| 12 | CH4 Energy II LLC | Fort Worth, TX 76109 | Oil & Gas Operator | Apr 2018 |
| 13 | CH4 Energy Six, LLC | Fort Worth, TX 76107 | Oil & Gas Operator | Jun 2025 |
| 14 | Champlin Exploration, Inc. | Enid, OK 73702 | Oil & Gas Operator | Mar 2025 |
| 15 | Chaparral (USA) Energy, Inc. | Oklahoma City, OK 73114 | Oil & Gas Operator | Sep 2002 |
| 16 | Chaparral Energy, L.L.C. | Oklahoma City, OK 73142 | Oil & Gas Operator | Jun 2025 |
| 17 | Chesapeake Operating, Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Feb 2025 |
| 18 | Chevron Midcontinent, L.P. | Midland, TX 79706 | Oil & Gas Operator | Jun 2025 |
| 19 | Chevron USA Inc | Midland, TX 79706 | Oil & Gas Operator | Jun 2025 |
| 20 | Chisos Operating, Inc. | Midland, TX 79702 | Oil & Gas Operator | Jun 2025 |
| 21 | Cholla Petroleum Inc | Dallas, TX 75225 | Oil & Gas Operator | Jun 2025 |
| 22 | Christico Petroleum Company | San Antonio, TX 78216 | Oil & Gas Operator | Jun 2025 |
| 23 | Ciervo Resources Asset Holding, LLC | Houston, TX 77056 | Oil & Gas Operator | Jun 2025 |
| 24 | Cimarex Energy Co. Of Colorado | Midland, TX 79706 | Oil & Gas Operator | Jun 2025 |
| 25 | Circle H Oil Company | Big Spring, TX 79721 | Oil & Gas Operator | Apr 2020 |
| 26 | Circle-S Energy, LLC | McKinney, TX 75071 | Oil & Gas Operator | Jun 2025 |
| 27 | Citation Oil & Gas Corp. | Houston, TX 77269 | Oil & Gas Operator | Jun 2025 |
| 28 | Clark, John M., Inc. | Midland, TX 79704 | Oil & Gas Operator | Jun 2025 |
| 29 | Clear Fork, Incorporated | Abilene, TX 79604 | Oil & Gas Operator | Jun 2025 |
| 30 | Coastal Oil & Gas Corporation | Houston, TX 77252 | Oil & Gas Operator | Dec 2009 |
| 31 | Coastal Plains Energy Inc | Oklahoma City, OK 73112 | Oil & Gas Operator | Jun 2025 |
| 32 | Cobalt Energy LLC | Wichita, KS 67202 | Oil & Gas Operator | Feb 2025 |
| 33 | Cobalt Operating, LLC | Midland, TX 79710 | Oil & Gas Operator | Feb 2025 |
| 34 | Coda Energy, Inc. | Dallas, TX 75231 | Oil & Gas Operator | Aug 1998 |
| 35 | COG Operating LLC | Midland, TX 79701 | Oil & Gas Operator | Jun 2025 |
| 36 | Collins & Ware, Inc. | Midland, TX 79701 | Oil & Gas Operator | Aug 2003 |
| 37 | Columbia Gas Development Corp. | Houston, TX 77251 | Oil & Gas Operator | Jun 1996 |
| 38 | Comanche Operating Co. | Oklahoma City, OK 73120 | Oil & Gas Operator | Aug 2002 |
| 39 | Comstock Energy, LLC | Wichita Falls, TX 76301 | Oil & Gas Operator | Jun 2025 |
| 40 | Concho Oilfield Serv & Oper Co. | Eden, TX 76837 | Oil & Gas Operator | Jun 2025 |
| 41 | Conoco Inc. | Houston, TX 77252 | Oil & Gas Operator | Mar 2015 |
| 42 | ConocoPhillips Company | Midland, TX 79701 | Oil & Gas Operator | Jun 2025 |
| 43 | Consolidated Oil & Gas Inc | Wichita, KS 67202 | Oil & Gas Operator | Dec 2012 |
| 44 | Contango Resources LLC | Andrews, TX 79714 | Oil & Gas Operator | Jun 2025 |
| 45 | Contango Resources, Inc. | Houston, TX 77002 | Oil & Gas Operator | Apr 2025 |
| 46 | Copper Ridge Resources LLC | Midland, TX 79710 | Oil Operator | Feb 2025 |
| 47 | Cordillera Energy Partners, LLC | Greenwood VLG, CO 80111 | Oil & Gas Operator | Mar 2020 |
| 48 | Cortez Operating Company | Fort Worth, TX 76102 | Oil & Gas Operator | Nov 2016 |
| 49 | Cory, Kenneth W. LTD. | Bellaire, TX 77401 | Oil & Gas Operator | Jun 2025 |
| 50 | Cottonwood Resources, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Aug 2003 |
| 51 | Cox, John L. | Midland, TX 79702 | Oil & Gas Operator | Mar 2015 |
| 52 | Cross Timbers Energy, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Jun 2025 |
| 53 | Cross Timbers Operating Co | Fort Worth, TX 76102 | Oil & Gas Operator | Feb 2025 |
| 54 | Crosstex Services, L.L.C. | Tuscola, TX 79562 | Oil Operator | Jun 2025 |
| 55 | Crownquest Operating, LLC | Midland, TX 79710 | Oil & Gas Operator | Jun 2025 |
| 56 | CTL Oil & Gas Corporation | Buchanan Dam, TX 78609 | Oil & Gas Operator | Nov 2020 |
| 57 | Cuervo, Inc. | FT Stockton, TX 79735 | Oil & Gas Operator | Jun 2025 |
| 58 | Custer & Wright Operating, Inc. | Midland, TX 79702 | Oil & Gas Operator | Jun 2025 |