| 1 | Anadarko E&P Onshore LLC | Houston, TX 77046 | Oil & Gas Operator | Dec 2025 |
| 2 | Anschutz Exploration Corporation | Denver, CO 80202 | Oil & Gas Operator | Dec 2025 |
| 3 | Berenergy Corporation | Denver, CO 80217 | Oil & Gas Operator | Oct 2025 |
| 4 | Chaco Energy Company | Denver, CO 80201 | Oil & Gas Operator | Oct 2025 |
| 5 | Cig Resources Company | Colorado Spring, CO 80944-1087 | Oil & Gas Operator | Jun 2018 |
| 6 | Citation Oil & Gas Corp | Houston, TX 77269 | Oil & Gas Operator | Dec 2025 |
| 7 | Declar Oil & Gas Inc | | Oil & Gas Operator | Dec 2012 |
| 8 | Dunne Equities Operating, Inc. | Houston, TX 77057 | Oil & Gas Operator | Aug 2022 |
| 9 | El Paso E&P Company, L.P. | Houston, TX 77002 | Oil & Gas Operator | Mar 2013 |
| 10 | Foundation Energy Management, LLC | Addison, TX 75001 | Oil & Gas Operator | Dec 2025 |
| 11 | Gilbert-Stewart Operating LLC | Denver, CO 80202 | Oil & Gas Operator | Sep 2025 |
| 12 | Halde Oil Inc | | Oil & Gas Operator | Sep 2025 |
| 13 | Helena Resources Inc | Lakewood, CO 80215 | Oil & Gas Operator | Oct 2025 |
| 14 | High Plains Energy LLC | | Oil & Gas Operator | May 2017 |
| 15 | Investment Equipment LLC | FT Morgan, CO 80701 | Oil & Gas Operator | Sep 2025 |
| 16 | Kuenzler & Flora Reserve Company | | Oil & Gas Operator | Aug 2025 |
| 17 | Loeb LLC* Herman L | | Oil & Gas Operator | Oct 2025 |
| 18 | McCoy Petroleum Corporation | Wichita, KS 67207 | Oil & Gas Operator | Oct 2025 |
| 19 | Mid-Con Energy Operating, LLC | Tulsa, OK 74136 | Oil & Gas Operator | Oct 2025 |
| 20 | Monument Gas Marketing Inc | | Oil & Gas Operator | Sep 2025 |
| 21 | Mountain Petroleum Corp | Denver, CO 80202 | Oil & Gas Operator | Apr 2013 |
| 22 | Mull Drilling Company | Wichita, KS 67206 | Oil & Gas Operator | Sep 2025 |
| 23 | Murfin Drilling Company, Inc. | Wichita, KS 67202 | Oil & Gas Operator | Oct 2025 |
| 24 | Mystique Resources Company | Aurora, CO 80016 | Oil & Gas Operator | Feb 2023 |
| 25 | P.O.&G. Operating, LLC | Houston, TX 77057 | Oil & Gas Operator | Dec 2025 |
| 26 | PDC Energy Inc | Denver, CO 80203 | Oil & Gas Operator | Sep 2025 |
| 27 | Pelican Hill Oil & Gas, Inc. | Carlsbad, CA 92010 | Oil & Gas Operator | May 2013 |
| 28 | Pintail Petroleum, LTD. | Wichita, KS 67202 | Oil & Gas Operator | Apr 2021 |
| 29 | Production Management Inc | | Oil & Gas Operator | Oct 2006 |
| 30 | Pronghorn Operating LLC | | Oil & Gas Operator | Jan 2023 |
| 31 | Strachan Exploration Inc | Englewood, CO 80112 | Oil & Gas Operator | Aug 2025 |
| 32 | Tindall Operating Company | Englewood, CO 80112 | Oil & Gas Operator | Jan 2025 |
| 33 | Vecta Oil & Gas LTD | Dallas, TX 75235 | Oil & Gas Operator | Sep 2025 |
| 34 | Wavetech Helium Inc | | Gas Operator | Sep 2025 |
| 35 | Wiepking-Fullerton Energy LLC | | Oil & Gas Operator | Sep 2025 |
| 36 | Williford Energy Company | Tulsa, OK 74135 | Oil & Gas Operator | Dec 2025 |