| 1 | C & F Petroleum, Inc. | San Angelo, TX 76902 | Oil & Gas Operator | May 2013 |
| 2 | Cambrian Management LTD | McCaulley, TX 79534 | Oil & Gas Operator | Sep 2026 |
| 3 | Campana Petroleum Company | Midland, TX 79705 | Oil & Gas Operator | Sep 2026 |
| 4 | Canan Mowrey Operating, LLC | Wichita Falls, TX 76308 | Oil & Gas Operator | Sep 2026 |
| 5 | Capstone Natural Res II, LLC | Tulsa, OK 74170 | Oil & Gas Operator | Feb 2020 |
| 6 | Capturepoint LLC | Allen, TX 75013 | Oil & Gas Operator | Sep 2026 |
| 7 | Carlow Corp. | Midland, TX 79702 | Oil & Gas Operator | Feb 2026 |
| 8 | Catfish Minerals LLC | Dallas, TX 75240 | Oil & Gas Operator | Sep 2014 |
| 9 | Central Resources, Inc. | Denver, CO 80203 | Oil & Gas Operator | Dec 2019 |
| 10 | Century Oil Company Inc | Shreveport, LA 71107 | Oil Operator | Dec 2025 |
| 11 | Chase Energy, Inc. | Austin, TX 78763 | Oil & Gas Operator | Oct 2001 |
| 12 | Chesapeake Operating, Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | May 2026 |
| 13 | Chevron USA Inc | Midland, TX 79706 | Oil & Gas Operator | Sep 2026 |
| 14 | Chisos Operating, Inc. | Midland, TX 79702 | Oil & Gas Operator | Sep 2026 |
| 15 | Cholla Petroleum Inc | Dallas, TX 75225 | Oil & Gas Operator | Sep 2026 |
| 16 | Cimarex Energy Co Of Colorado | Midland, TX 79706 | Oil & Gas Operator | Jul 2026 |
| 17 | Citation Oil & Gas Corp | Houston, TX 77269 | Oil & Gas Operator | Sep 2026 |
| 18 | CNG Producing Company | New Orleans, LA 70112 | Oil & Gas Operator | Dec 2015 |
| 19 | Coastal Oil & Gas Corp | Houston, TX 77252 | Oil & Gas Operator | Dec 2009 |
| 20 | Coda Energy, Inc. | Dallas, TX 75231 | Oil & Gas Operator | Aug 1998 |
| 21 | COG Operating LLC | Midland, TX 79701 | Oil & Gas Operator | Sep 2026 |
| 22 | Collins & Ware, Inc. | Midland, TX 79701 | Oil & Gas Operator | Aug 2003 |
| 23 | Columbia Gas Development Corp. | Houston, TX 77251 | Oil & Gas Operator | Jun 1996 |
| 24 | Concho Resources Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Mar 2004 |
| 25 | Cone, S. E. Jr. | Lubbock, TX 79408 | Oil & Gas Operator | Feb 2002 |
| 26 | ConocoPhillips Company | Midland, TX 79701 | Oil & Gas Operator | Sep 2026 |
| 27 | Continental Exploration LLC | Richardson, TX 75080 | Oil & Gas Operator | Sep 2026 |
| 28 | Coquina Oil Corporation | Houston, TX 77227 | Oil & Gas Operator | Mar 2015 |
| 29 | Cory, Kenneth W. LTD. | Bellaire, TX 77401 | Oil & Gas Operator | Sep 2026 |
| 30 | Costilla Energy, Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 31 | Costilla Petroleum Corporation | Midland, TX 79702 | Oil & Gas Operator | Mar 2015 |
| 32 | Cottonwood Resources, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Aug 2003 |
| 33 | CR3 Operating Company, L.L.C. | Houston, TX 77251 | Oil & Gas Operator | Sep 2026 |
| 34 | Crey Oil & Gas LLC | Sundown, TX 79372 | Oil Operator | Sep 2026 |
| 35 | Cross Timbers Energy, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Jun 2026 |
| 36 | Cross Timbers Operating Company | Fort Worth, TX 76102 | Oil & Gas Operator | May 2026 |
| 37 | Crossfoot Operating, LLC | Houston, TX 77227 | Oil & Gas Operator | Sep 2026 |
| 38 | Ctoc Energy, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Sep 2026 |