| 1 | C E L Inc | Bartlesville, OK 74006 | Oil & Gas Operator | Jan 2020 |
| 2 | Cabot Oil & Gas Corporation | Houston, TX 77024 | Oil & Gas Operator | May 2026 |
| 3 | Calpine Natural Gas Company | Houston, TX 77002 | Oil & Gas Operator | Apr 2002 |
| 4 | Calpine Natural Gas Company L.P. | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 5 | Calpine Natural Gas L.P. | Houston, TX 77002 | Oil & Gas Operator | Dec 2005 |
| 6 | Cameron Exploration, Inc. | Longview, TX 75604 | Oil & Gas Operator | Sep 2026 |
| 7 | Camterra Resources, Inc. | Marshall, TX 75671 | Oil & Gas Operator | Sep 2026 |
| 8 | Carter Resources | Kilgore, TX 75663 | Oil & Gas Operator | Jan 2005 |
| 9 | Castle Exploration Company Inc | Blue Bell, PA 19422 | Oil & Gas Operator | May 2018 |
| 10 | Cavalry Resources LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Jun 2010 |
| 11 | Cci East Texas Upstream LLC | Houston, TX 77002 | Oil & Gas Operator | Jan 2021 |
| 12 | Chalker Energy Management II,LLC | Houston, TX 77002 | Oil & Gas Operator | Feb 2008 |
| 13 | Chalker Energy Management,LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2006 |
| 14 | Channel Production Company | Marshall, TX 75670 | Oil & Gas Operator | Sep 2026 |
| 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 | Sep 2026 |
| 17 | Chemco Inc | Centennial, CO 80112 | Oil & Gas Operator | Sep 2023 |
| 18 | Chemily Management Company | Cypress, TX 77429 | Oil & Gas Operator | Apr 2023 |
| 19 | Chesapeake Exploration LLC | Oklahoma City, OK 731540496 | Oil & Gas Operator | Jul 2020 |
| 20 | Chesapeake Operating LLC | Oklahoma City, OK 73154 | Oil & Gas Operator | Sep 2026 |
| 21 | Chesapeake Operating, Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Mar 2026 |
| 22 | Chevron USA Inc | Midland, TX 79706 | Oil & Gas Operator | Sep 2026 |
| 23 | Chinn Exploration Company | Longview, TX 75605 | Oil & Gas Operator | Nov 2015 |
| 24 | Chisos, LTD | Houston, TX 77098 | Oil & Gas Operator | Sep 2026 |
| 25 | Cinron Energy, LLC | Arp, TX 75750 | Oil & Gas Operator | Sep 2026 |
| 26 | CL&F Operating LLC | Spring, TX 77389 | Oil & Gas Operator | Dec 2022 |
| 27 | Classic Energy Incorporated | Tyler, TX 75701 | Oil & Gas Operator | Jul 2005 |
| 28 | Classic Oil & Gas, Inc. | Tyler, TX 75701 | Oil & Gas Operator | Jan 2004 |
| 29 | Classic Operating Co. LLC | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 30 | Clide Oil Corp. | Iraan, TX 79744 | Oil & Gas Operator | Nov 2015 |
| 31 | CLR Secondary Recovery, LLC | Wichita Falls, TX 76306 | Oil & Gas Operator | Sep 2026 |
| 32 | CNS Energy, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Nov 2010 |
| 33 | Coates Energy Interests, LTD. | San Antonio, TX 78217 | Oil & Gas Operator | Aug 1997 |
| 34 | Cody Energy, Inc. | Houston, TX 77077 | Oil & Gas Operator | Jul 2026 |
| 35 | Comco Of Louisiana, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Jun 2000 |
| 36 | Compass Energy Operating, LLC | Tulsa, OK 74136 | Oil & Gas Operator | Sep 2026 |
| 37 | Comstock Oil & Gas, Inc. | Frisco, TX 75034 | Oil & Gas Operator | Dec 2012 |
| 38 | Comstock Oil & Gas, LLC | Frisco, TX 75034 | Oil & Gas Operator | Sep 2026 |
| 39 | Comstock Oil & Gas, LP | Frisco, TX 75034 | Oil & Gas Operator | Aug 2019 |
| 40 | Concord Operating Incorporated | Horseshoe Bay, TX 78657 | Oil & Gas Operator | Dec 2008 |
| 41 | ConocoPhillips Company | Midland, TX 79701 | Oil & Gas Operator | Sep 2026 |
| 42 | Conquest Energy, Inc. | Fort Worth, TX 76116 | Oil & Gas Operator | Sep 2026 |
| 43 | Cook Exploration Co. | Longview, TX 75602 | Oil & Gas Operator | Sep 2026 |
| 44 | Coronado Energy E&P Company, LLC | Houston, TX 77252 | Oil & Gas Operator | Dec 2010 |
| 45 | Corsa Resources, LLC | Kemah, TX 77565 | Oil & Gas Operator | Sep 2026 |
| 46 | Costilla Energy, Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 47 | Costilla Petroleum Corporation | Midland, TX 79702 | Oil & Gas Operator | Mar 2015 |
| 48 | Cotton Valley Resources, LLC | Kilgore, TX 75663 | Oil & Gas Operator | Feb 2025 |
| 49 | Cottonwood Resources, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Aug 2003 |
| 50 | Covey Park Operating LLC | Dallas, TX 75225 | Oil & Gas Operator | Aug 2019 |
| 51 | Covey Park Resources LLC | Frisco, TX 75034 | Oil & Gas Operator | Aug 2019 |
| 52 | Cox Resources Corporation | Dallas, TX 75244 | Oil & Gas Operator | Mar 2015 |
| 53 | CR2 Energy LLC | Kemah, TX 77565 | Oil & Gas Operator | Sep 2026 |
| 54 | Craton Energy Company II LLC | Oklahoma City, OK 73154 | Oil & Gas Operator | Dec 2006 |
| 55 | Craton Energy Holdings III, LP | Houston, TX 77002 | Oil & Gas Operator | Jul 2009 |
| 56 | Craton Operating LLC | Bellaire, TX 77401 | Oil & Gas Operator | Sep 2026 |
| 57 | Crawley Petroleum Corporation | Oklahoma City, OK 73102 | Oil & Gas Operator | Sep 2026 |
| 58 | CRD Operating, LLC | Fort Worth, TX 76116 | Oil & Gas Operator | Feb 2021 |
| 59 | Crescent Pass Energy, LLC | Houston, TX 77070 | Oil & Gas Operator | May 2026 |
| 60 | Cross Creek Energy LLC | Houston, TX 77074 | Oil & Gas Operator | Aug 2013 |
| 61 | Cross Timbers Energy, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Jun 2026 |
| 62 | Crow, David | Shreveport, LA 71106 | Oil & Gas Operator | May 2001 |
| 63 | Crystal Oil Company | Shreveport, LA 71120 | Oil & Gas Operator | Jul 1995 |
| 64 | Culver & Cain Production LLC | Tyler, TX 75711 | Oil & Gas Operator | Sep 2026 |
| 65 | CX Operating LLC | Dallas, TX 75238 | Oil & Gas Operator | Sep 2026 |
| 66 | Cypress Operating, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Sep 2026 |