| 1 | Axis Exploration LLC | | Oil & Gas Operator | Jul 2025 |
| 2 | Blue Creek Inc | Fort Worth, TX 76181 | Oil & Gas Operator | Dec 2002 |
| 3 | Central Resources Inc | Denver, CO 80203 | Oil & Gas Operator | Dec 2019 |
| 4 | CGT Inc | | Oil & Gas Operator | May 2015 |
| 5 | Crimson Exploration Oper., Inc. | Houston, TX 77002 | Oil & Gas Operator | Dec 2019 |
| 6 | Eastco Operating LLC | | Oil & Gas Operator | Jun 2025 |
| 7 | GMT Exploration Company LLC | Denver, CO 80202 | Oil & Gas Operator | Aug 2025 |
| 8 | Goodwin Energy Management LLC | | Oil & Gas Operator | Dec 2022 |
| 9 | Hilcorp Energy Company | Houston, TX 77208 | Oil & Gas Operator | Oct 2025 |
| 10 | HRM Resources II, LLC | Denver, CO 80202 | Oil & Gas Operator | Jan 2022 |
| 11 | HRM Resources LLC | Denver, CO 80202 | Oil & Gas Operator | Aug 2015 |
| 12 | HS Resources, Inc. | Denver, CO 80202 | Oil & Gas Operator | Dec 2005 |
| 13 | Hyndrex Resources | | Oil & Gas Operator | Apr 2018 |
| 14 | Impetro Resources LLC | | Oil & Gas Operator | Aug 2025 |
| 15 | K P Kauffman Company Inc | Denver, CO 80203 | Oil & Gas Operator | Aug 2025 |
| 16 | Kerr-McGee Oil & Gas Onshore LP | Houston, TX 77046 | Oil & Gas Operator | Oct 2025 |
| 17 | KTM Operating LLC | | Oil & Gas Operator | Jun 2025 |
| 18 | Lilis Energy Inc | Denver, CO 80203 | Oil & Gas Operator | Aug 2017 |
| 19 | Noble Energy Inc | Midland, TX 79706 | Oil & Gas Operator | Oct 2025 |
| 20 | Nova Energy Inc | Casper, WY 82601 | Oil & Gas Operator | Oct 2020 |
| 21 | Overland Resources LLC | Greenwood VIllage, CO 80111 | Oil & Gas Operator | Jul 2019 |
| 22 | P.O.&G. Operating, LLC | Houston, TX 77057 | Oil & Gas Operator | Oct 2025 |
| 23 | Par Pacific Holdings Inc | | Oil & Gas Operator | Apr 2015 |
| 24 | Petroshare Corporation | | Oil & Gas Operator | Jan 2024 |
| 25 | Pozo Resources, Inc | Houston, TX 77002 | Oil & Gas Operator | Oct 2025 |
| 26 | Recovery Energy Inc | | Oil & Gas Operator | Jan 2014 |
| 27 | Renegade Oil & Gas Company LLC | | Oil & Gas Operator | Jul 2025 |
| 28 | Ritchie Exploration, Inc. | Wichita, KS 67278 | Oil & Gas Operator | Jun 2025 |
| 29 | Setex Oil And Gas Company | Houston, TX 77002 | Oil & Gas Operator | Feb 2012 |
| 30 | Smith Energy Corp | | Oil & Gas Operator | Jan 2024 |
| 31 | Southwestern Production Corporation | Lakewood, CO 80228 | Oil & Gas Operator | Aug 2025 |
| 32 | Thomas Operating Company Inc | Greeley, CO 80634 | Oil & Gas Operator | Aug 2008 |
| 33 | Three Forks Resources LLC | Wheat Ridge, CO 80033 | Oil & Gas Operator | Oct 2025 |
| 34 | Timberline Energy Inc | Franklin, PA 16323-0269 | Oil & Gas Operator | Dec 2024 |
| 35 | Trinity Energy Corp | Gibsonia, PA 15044-9106 | Oil & Gas Operator | Dec 2007 |
| 36 | Trinity Energy Resources Inc | Houston, TX 77079 | Oil & Gas Operator | Aug 2005 |
| 37 | United States Exploration, Inc. | Denver, CO 80802 | Oil & Gas Operator | Jun 2009 |