| 1 | Aurora Power Resources, Inc. | Houston, TX 77042 | Oil & Gas Operator | Aug 2018 |
| 2 | Baney Well Service Inc | Denver, CO 80237 | Oil Operator | Dec 2015 |
| 3 | Blue Creek Inc | Fort Worth, TX 76181 | Oil & Gas Operator | Jul 2002 |
| 4 | Charles P Dunning LLC | | Oil & Gas Operator | Sep 2025 |
| 5 | Colorado Interstate Gas Company LLC | Colorado Springs, CO 80944 | Oil & Gas Operator | Sep 2025 |
| 6 | Coral Production Corporation | Denver, CO 80201 | Oil & Gas Operator | Jun 2025 |
| 7 | Declar Oil & Gas Inc | | Oil & Gas Operator | Dec 2012 |
| 8 | Diamondback Oil Partners LLP | Arvada, CO 80004 | Oil & Gas Operator | Sep 2016 |
| 9 | Diversified Operating Corp. | Golden, CO 80401 | Oil & Gas Operator | Oct 2012 |
| 10 | Forestar Group Inc | | Oil Operator | Sep 2015 |
| 11 | Fritzler Resources Inc | Fort Morgan, CO 80701 | Oil & Gas Operator | Jun 2025 |
| 12 | H & R Well Services, Inc. | FT Morgan, CO 80701 | Oil & Gas Operator | Apr 2015 |
| 13 | Hyndrex Resources | | Oil & Gas Operator | Feb 2016 |
| 14 | Impetro Resources LLC | | Oil & Gas Operator | Sep 2025 |
| 15 | K P Kauffman Company Inc | Denver, CO 80203 | Oil & Gas Operator | Sep 2025 |
| 16 | Klabzuba Oil & Gas Inc | Denver, CO 80202 | Oil & Gas Operator | Aug 2012 |
| 17 | Kodiak Petroleum Inc | Englewood, CO 80155 | Oil & Gas Operator | Jun 2025 |
| 18 | Lyco Energy Corporation | Dallas, TX 75206 | Oil & Gas Operator | Jun 2015 |
| 19 | Magpie Operating, Inc | | Oil & Gas Operator | Sep 2025 |
| 20 | Markus Production, Inc | | Oil & Gas Operator | Mar 2021 |
| 21 | Monahan* Rex Family Trust | | Oil & Gas Operator | May 2007 |
| 22 | Noble Energy Inc | Midland, TX 79706 | Oil & Gas Operator | Dec 2025 |
| 23 | O'Brien Energy Resources Corp | Portsmouth, NH 03801 | Oil & Gas Operator | Dec 2025 |
| 24 | P & M Petroleum Management LLC | Denver, CO 80202 | Oil & Gas Operator | Oct 2021 |
| 25 | Painted Pegasus Petroleum LLC | | Oil & Gas Operator | Jul 2024 |
| 26 | PCR Operating LLC | | Oil & Gas Operator | Jul 2024 |
| 27 | Petro-Canada Resources (USA) Inc | Denver, CO 80202-472 | Oil & Gas Operator | Feb 2010 |
| 28 | Prudent Resources LLC | Houston, TX 77042 | Oil & Gas Operator | Dec 2025 |
| 29 | Ritchie Exploration, Inc. | Wichita, KS 67278 | Oil & Gas Operator | Jun 2025 |
| 30 | San Marco Petroleum Inc | Denver, CO 80293 | Oil & Gas Operator | Oct 2025 |
| 31 | Schneider Energy Services Inc | | Oil & Gas Operator | Jul 2025 |
| 32 | Smith Energy Corp | | Oil & Gas Operator | Jan 2024 |
| 33 | Smith Oil Properties Inc | | Oil & Gas Operator | Nov 2022 |
| 34 | Strachan Exploration Inc | Englewood, CO 80112 | Oil & Gas Operator | Aug 2025 |
| 35 | Tindall Operating Company | Englewood, CO 80112 | Oil & Gas Operator | Jan 2025 |
| 36 | Verdad Resources LLC | | Oil & Gas Operator | Sep 2025 |
| 37 | Ward & Son* Alfred | | Oil & Gas Operator | Jul 2021 |
| 38 | Western Operating Company | Denver, CO 80204 | Oil & Gas Operator | Aug 2025 |