| 1 | Callon Petroleum Operating Co | Houston, TX 77042 | Oil & Gas Operator | Jul 2024 |
| 2 | Cambrian Management LTD | McCaulley, TX 79534 | Oil & Gas Operator | Dec 2024 |
| 3 | Caprock Exploration, Inc. | Odessa, TX 79760 | Oil & Gas Operator | Feb 2024 |
| 4 | Cass Energy Corp | Dallas, TX 75225 | Oil & Gas Operator | Aug 2003 |
| 5 | Cazador Operating, LLC | Midland, TX 79702 | Oil & Gas Operator | Dec 2024 |
| 6 | Celero Energy LP | Midland, TX 79701 | Oil & Gas Operator | May 2011 |
| 7 | Chaparral (USA) Energy, Inc. | Oklahoma City, OK 73114 | Oil & Gas Operator | Sep 2002 |
| 8 | Chaparral Energy, L.L.C. | Oklahoma City, OK 73142 | Oil & Gas Operator | Dec 2024 |
| 9 | Charger Shale Oil Operating, LLC | Austin, TX 78704 | Oil & Gas Operator | Sep 2021 |
| 10 | Charles A. Bird, Estate | Midland, TX 79702 | Oil & Gas Operator | Feb 2015 |
| 11 | Chesapeake Operating, Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Aug 2024 |
| 12 | Chevron Midcontinent, L.P. | Midland, TX 79706 | Oil & Gas Operator | Dec 2024 |
| 13 | Chevron USA Inc | Midland, TX 79706 | Oil & Gas Operator | Dec 2024 |
| 14 | Chi Operating, Inc. | Midland, TX 79702 | Oil & Gas Operator | Dec 2024 |
| 15 | Cholla Petroleum, Inc. | Dallas, TX 75225 | Oil & Gas Operator | Dec 2024 |
| 16 | Cimarex Energy Co | Midland, TX 79706 | Oil & Gas Operator | Dec 2024 |
| 17 | Cimarex Energy Co. Of Colorado | Midland, TX 79706 | Oil & Gas Operator | Dec 2024 |
| 18 | Circle-S Energy, LLC | McKinney, TX 75071 | Oil & Gas Operator | Dec 2024 |
| 19 | Citation Oil & Gas Corp. | Houston, TX 77269 | Oil & Gas Operator | Dec 2024 |
| 20 | Civitas Permian Operating, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Dec 2024 |
| 21 | Clear Fork, Incorporated | Abilene, TX 79604 | Oil & Gas Operator | Dec 2024 |
| 22 | Clear Water Inc. | Midland, TX 79710 | Oil & Gas Operator | Dec 2024 |
| 23 | CLR Secondary Recovery, LLC | Wichita Falls, TX 76306 | Oil & Gas Operator | Dec 2024 |
| 24 | CMS Oil And Gas Company | Jackson, MI 49201 | Oil & Gas Operator | Oct 2002 |
| 25 | Cobalt Energy LLC | Wichita, KS 67202 | Oil & Gas Operator | Aug 2024 |
| 26 | Cockrell Production Co., Inc. | Irving, TX 75014 | Oil & Gas Operator | Dec 2024 |
| 27 | Coda Energy, Inc. | Dallas, TX 75231 | Oil & Gas Operator | Aug 1998 |
| 28 | COG Operating LLC | Midland, TX 79701 | Oil & Gas Operator | Dec 2024 |
| 29 | Collins & Ware, Inc. | Midland, TX 79701 | Oil & Gas Operator | Aug 2003 |
| 30 | Compass Operating, L.L.C. | Midland, TX 79702 | Oil & Gas Operator | Dec 2024 |
| 31 | Comstock Energy, LLC | Wichita Falls, TX 76301 | Oil & Gas Operator | Dec 2024 |
| 32 | Comstock Oil & Gas, Inc. | Frisco, TX 75034 | Oil & Gas Operator | Dec 2012 |
| 33 | Comstock Oil & Gas, LP | Frisco, TX 75034 | Oil & Gas Operator | Aug 2019 |
| 34 | Concho Exploration Inc | Oklahoma City, OK 73154 | Oil & Gas Operator | Mar 2015 |
| 35 | Concho Resources Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Mar 2004 |
| 36 | Conoco Inc. | Houston, TX 77252 | Oil & Gas Operator | Mar 2015 |
| 37 | ConocoPhillips Company | Midland, TX 79701 | Oil & Gas Operator | Dec 2024 |
| 38 | Consolidated Oil & Gas Inc | Wichita, KS 67202 | Oil & Gas Operator | Dec 2012 |
| 39 | Coppertop | San Angelo, TX 76904 | Oil & Gas Operator | Dec 2024 |
| 40 | Coquina Oil Corporation | Houston, TX 77227 | Oil & Gas Operator | Mar 2015 |
| 41 | Core E & P Corp. | Victoria, TX 77902 | Oil & Gas Operator | Dec 2024 |
| 42 | Costa Resources, Inc. | Dallas, TX 75209 | Oil & Gas Operator | Aug 2003 |
| 43 | Costilla Energy Inc | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 44 | Costilla Petroleum Corporation | Midland, TX 79702 | Oil & Gas Operator | Mar 2015 |
| 45 | Cottonwood Resources, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Aug 2003 |
| 46 | Cove Petroleum Corporation | Shreveport, LA 71101 | Oil & Gas Operator | Jun 2020 |
| 47 | Cox, John L. | Midland, TX 79702 | Oil & Gas Operator | Mar 2015 |
| 48 | Crone Oil Company | Gruver, TX 79040 | Oil & Gas Operator | Dec 2024 |
| 49 | Cross Timbers Energy, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2024 |
| 50 | Crownquest Operating, LLC | Midland, TX 79710 | Oil & Gas Operator | Dec 2024 |