| 1 | 1876 Resources LLC | Highlands Ranch, CO 80129 | Oil & Gas Operator | Dec 2025 |
| 2 | 4-H Operating Corporation | | Oil & Gas Operator | Oct 2017 |
| 3 | 8 North LLC | Denver, CO 80202 | Oil & Gas Operator | Jan 2025 |
| 4 | Advantage Resources Inc | Broomfield, CO 80020 | Oil & Gas Operator | Sep 2025 |
| 5 | Anadarko E&P Onshore LLC | Houston, TX 77046 | Oil & Gas Operator | Feb 2026 |
| 6 | Antelope Energy Company LLC | Denver, CO 80202 | Oil & Gas Operator | Dec 2024 |
| 7 | Arch Oil & Gas, LLC | Ennis, TX 75119 | Oil & Gas Operator | Feb 2026 |
| 8 | Barrett Corporation* Bill | | Oil & Gas Operator | Dec 2025 |
| 9 | Bataa Oil Inc | Arvada, CO 80005 | Oil & Gas Operator | Dec 2025 |
| 10 | Bayswater Exploration & Production LLC | Denver, CO 80202 | Oil & Gas Operator | Dec 2025 |
| 11 | Beren Corporation | Wichita, KS 67206 | Oil & Gas Operator | Feb 2026 |
| 12 | Bison IV Operating LLC | | Oil & Gas Operator | Dec 2025 |
| 13 | Black Hills Exploration & Production Inc | Newcastle, WY 82701 | Oil & Gas Operator | Mar 2018 |
| 14 | Blue Chip Oil Inc | | Oil & Gas Operator | Dec 2025 |
| 15 | Blue Creek Inc | Fort Worth, TX 76181 | Oil & Gas Operator | Jul 2002 |
| 16 | Bonanza Creek Energy Operating Company LLC | | Oil & Gas Operator | Dec 2025 |
| 17 | Brooks Exploration Inc | Denver, CO 80293 | Oil & Gas Operator | Mar 2001 |
| 18 | Ceh Operating LLC | | Oil & Gas Operator | Dec 2025 |
| 19 | Chaco Energy Company | Denver, CO 80201 | Oil & Gas Operator | Jan 2026 |
| 20 | Charles P Dunning LLC | | Oil & Gas Operator | Dec 2025 |
| 21 | Chesapeake Operating LLC | Oklahoma City, OK 73154 | Oil & Gas Operator | Feb 2026 |
| 22 | Churchill Energy, Inc. | | Oil & Gas Operator | Aug 2020 |
| 23 | Civitas North LLC | | Oil & Gas Operator | Dec 2025 |
| 24 | Crestone Peak Resources Operating LLC | | Oil & Gas Operator | Nov 2025 |
| 25 | Cub Creek Energy LLC | | Oil & Gas Operator | Mar 2019 |
| 26 | Declar Oil & Gas Inc | | Oil & Gas Operator | Dec 2012 |
| 27 | Diamond Operating Inc | | Oil & Gas Operator | Aug 2021 |
| 28 | Diversified Operating Corp. | Golden, CO 80401 | Oil & Gas Operator | Oct 2012 |
| 29 | Dunamis Energy Operating LLC | | Oil & Gas Operator | Nov 2025 |
| 30 | Eddy Oil Company | | Oil & Gas Operator | Oct 2011 |
| 31 | Edge Energy II LLC | | Oil & Gas Operator | Oct 2024 |
| 32 | Edge Energy LLC | | Oil & Gas Operator | Dec 2025 |
| 33 | Encana Energy Resources Inc | Denver, CO 80202-2828 | Oil & Gas Operator | Feb 2024 |
| 34 | Enervest Operating LLC | Houston, TX 77002 | Oil & Gas Operator | Feb 2026 |
| 35 | EOG Resources, Inc. | Midland, TX 79702 | Oil & Gas Operator | Feb 2026 |
| 36 | Extraction Oil & Gas LLC | | Oil & Gas Operator | Dec 2025 |
| 37 | Fortitude Exploration Co | | Oil & Gas Operator | Aug 2025 |
| 38 | Foundation Energy Management, LLC | Addison, TX 75001 | Oil & Gas Operator | Feb 2026 |
| 39 | Fountainhead Resources LTD | | Oil & Gas Operator | Apr 2016 |
| 40 | Fritzler Resources Inc | Fort Morgan, CO 80701 | Oil & Gas Operator | Nov 2025 |
| 41 | Fundare Resources Operating Company LLC | | Oil & Gas Operator | Nov 2025 |
| 42 | Gadeco, LLC | | Oil & Gas Operator | Jan 2026 |
| 43 | Goodwin Energy Management LLC | | Oil & Gas Operator | Dec 2022 |
| 44 | Great Western Operating Company LLC | | Oil & Gas Operator | Aug 2020 |
| 45 | Griffin Management LLC | | Oil & Gas Operator | Feb 2010 |
| 46 | Grizzly Operating, LLC | Houston, TX 77057 | Oil & Gas Operator | Nov 2025 |
| 47 | Grynberg* Jack Dba Grynberg Petroleum Co | | Oil Operator | Jan 2023 |
| 48 | H & R Well Services, Inc. | FT Morgan, CO 80701 | Oil & Gas Operator | Apr 2015 |
| 49 | Harsh International Inc | | Oil & Gas Operator | Dec 2013 |
| 50 | Helena Resources Inc | Lakewood, CO 80215 | Oil & Gas Operator | Oct 2025 |
| 51 | Highpoint Energy LLC | | Oil & Gas Operator | Nov 2022 |
| 52 | Homestead Oil Inc | | Oil & Gas Operator | Jun 2014 |
| 53 | HS Resources, Inc. | Denver, CO 80202 | Oil & Gas Operator | Sep 2002 |
| 54 | Hyndrex Resources | | Oil & Gas Operator | Feb 2016 |
| 55 | Impetro Resources LLC | | Oil & Gas Operator | Nov 2025 |
| 56 | Incline Operating LLC | | Oil & Gas Operator | Dec 2025 |
| 57 | Industrial Gas Services Inc | Wheat Ridge, CO 80033 | Oil & Gas Operator | Feb 2023 |
| 58 | Jenex Petroleum Corp | The Woodlands, TX 77380 | Oil & Gas Operator | Feb 2026 |
| 59 | K P Kauffman Company Inc | Denver, CO 80203 | Oil & Gas Operator | Dec 2025 |
| 60 | Kaiser-Francis Oil Company | Tulsa, OK 74121 | Oil & Gas Operator | Feb 2026 |
| 61 | Kerr-McGee Oil & Gas Onshore LP | Houston, TX 77046 | Oil & Gas Operator | Feb 2026 |
| 62 | Kugler* Dean & Joe Dba D-J Oil Company | | Oil & Gas Operator | Sep 2019 |
| 63 | Loloff Construction Inc | | Oil & Gas Operator | Apr 2016 |
| 64 | Longs Peak Resources LLC | Houston, TX 77019 | Oil & Gas Operator | Dec 2025 |
| 65 | Lundvall Oil & Gas Inc | | Oil & Gas Operator | Jan 2023 |
| 66 | Lyco Energy Corporation | Dallas, TX 75206 | Oil & Gas Operator | Jun 2015 |
| 67 | M E III Corporation | | Oil & Gas Operator | Apr 2022 |
| 68 | Machii-Ross Petroleum Co | | Oil & Gas Operator | Apr 2014 |
| 69 | Magpie Operating, Inc | | Oil & Gas Operator | Nov 2025 |
| 70 | Markus Production, Inc | | Oil & Gas Operator | Mar 2021 |
| 71 | Matrix Energy LLC | | Oil & Gas Operator | Apr 2013 |
| 72 | McCartney Engineering LLC | Wheat Ridge, CO 80033 | Oil & Gas Operator | Dec 2025 |
| 73 | MDS Energy Development LLC | | Oil & Gas Operator | Dec 2025 |
| 74 | Merit Energy Company | Dallas, TX 75240 | Oil & Gas Operator | Feb 2026 |
| 75 | Monago Operating Inc | | Oil & Gas Operator | Apr 2007 |
| 76 | Monahan* Rex Family Trust | | Oil & Gas Operator | May 2007 |
| 77 | Nanke Energy LLC | Westminster, CO 80234 | Oil & Gas Operator | Oct 2025 |
| 78 | Noble Energy Inc | Midland, TX 79706 | Oil & Gas Operator | Feb 2026 |
| 79 | Noble Energy Production Inc | Houston, TX 77067 | Oil & Gas Operator | Feb 2026 |
| 80 | North American Resources Company | Billings, MT 59101 | Oil & Gas Operator | Dec 2019 |
| 81 | O'Brien Energy Resources Corp | Portsmouth, NH 03801 | Oil & Gas Operator | Feb 2026 |
| 82 | Overland Resources LLC | Greenwood VIllage, CO 80111 | Oil & Gas Operator | Feb 2019 |
| 83 | Oxbow Properties Inc | Centennial, CO 80122-1422 | Oil & Gas Operator | Jan 2025 |
| 84 | P & M Petroleum Management LLC | Denver, CO 80202 | Oil & Gas Operator | Oct 2021 |
| 85 | Painted Pegasus Petroleum LLC | | Oil & Gas Operator | Jul 2024 |
| 86 | Pape Oilfield Service Inc | | Oil & Gas Operator | Dec 2012 |
| 87 | Par Pacific Holdings Inc | | Oil & Gas Operator | Jun 2010 |
| 88 | Patina Oil & Gas Corporation | Denver, CO 80202 | Oil & Gas Operator | May 2016 |
| 89 | PDC Energy Inc | Denver, CO 80203 | Oil & Gas Operator | Nov 2025 |
| 90 | Peterson Energy Operating Inc | Loveland, CO 80537 | Oil & Gas Operator | Dec 2025 |
| 91 | Petro Operating Company LLC | | Oil & Gas Operator | Dec 2025 |
| 92 | Petro-Canada Resources (USA) Inc | Denver, CO 80202-472 | Oil & Gas Operator | Feb 2010 |
| 93 | Petroleum Energy Corp | | Oil & Gas Operator | Jul 2012 |
| 94 | Petroleum Management LLC | Platteville, CO 80651 | Oil & Gas Operator | Mar 2011 |
| 95 | Petroshare Corporation | | Oil & Gas Operator | Jan 2024 |
| 96 | Phoenix Resources LLC | Longview, TX 75604 | Oil & Gas Operator | Jul 2022 |
| 97 | Prairie Operating Co LLC | | Oil & Gas Operator | Nov 2025 |
| 98 | Providence Operating LLC Dba Poco Operating | | Oil & Gas Operator | Nov 2025 |
| 99 | Renegade Oil & Gas Company LLC | | Oil & Gas Operator | Dec 2025 |
| 100 | Roughhouse Oil & Gas LLC | | Oil & Gas Operator | Dec 2025 |