| 1 | Callon (Permian) LLC | Houston, TX 77042 | Oil & Gas Operator | Jul 2024 |
| 2 | Cambrian Management LTD | McCaulley, TX 79534 | Oil & Gas Operator | Nov 2025 |
| 3 | Capitan Energy, Incorporated | Carlsbad, NM 88221 | Oil & Gas Operator | Nov 2025 |
| 4 | Carrizo (Eagle Ford) LLC | Houston, TX 77042 | Oil & Gas Operator | Jan 2020 |
| 5 | Carrizo (Permian) LLC | Houston, TX 77042 | Oil & Gas Operator | Jan 2020 |
| 6 | Chapman, Ford Operating, Inc. | Midland, TX 79702 | Oil & Gas Operator | Jan 1996 |
| 7 | Charger Shale Oil Operating, LLC | Austin, TX 78704 | Oil & Gas Operator | Sep 2021 |
| 8 | Chesapeake Operating, Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Jun 2025 |
| 9 | Chevron USA Inc | Midland, TX 79706 | Oil & Gas Operator | Nov 2025 |
| 10 | Cimarex Energy Co | Midland, TX 79706 | Oil & Gas Operator | Nov 2025 |
| 11 | Cimarex Energy Co. Of Colorado | Midland, TX 79706 | Oil & Gas Operator | Nov 2025 |
| 12 | Cinnabar Energy, LTD. | Fort Worth, TX 76107 | Oil & Gas Operator | May 2018 |
| 13 | Cinnabar Operating, LLC | Fort Worth, TX 76121 | Oil & Gas Operator | Nov 2025 |
| 14 | Claron Corporation | Houston, TX 77219 | Oil & Gas Operator | Nov 2025 |
| 15 | CM TX Production, LLC | Lakewood, CO 80228 | Oil & Gas Operator | Feb 2023 |
| 16 | COG Operating LLC | Midland, TX 79701 | Oil & Gas Operator | Nov 2025 |
| 17 | COG Production LLC | Midland, TX 79701 | Oil & Gas Operator | Aug 2025 |
| 18 | Conoco Inc | Houston, TX 77252 | Oil & Gas Operator | Mar 2015 |
| 19 | ConocoPhillips Company | Midland, TX 79701 | Oil & Gas Operator | Nov 2025 |
| 20 | Coterra Energy Operating Co. | Midland, TX 79706 | Oil & Gas Operator | Aug 2025 |
| 21 | Crownquest Operating, LLC | Midland, TX 79710 | Oil & Gas Operator | Nov 2025 |