| 1 | Anschutz Exploration Corporation | Denver, CO 80202 | Oil & Gas Operator | Dec 2025 |
| 2 | Antler Energy LLC | Baggs, WY 82321 | Oil & Gas Operator | Jun 2025 |
| 3 | Arch Oil & Gas, LLC | Dallas, TX 75254 | Oil & Gas Operator | Dec 2025 |
| 4 | Argali Exploration Company | | Oil & Gas Operator | Aug 2025 |
| 5 | Bayless Producer LLC* Robert L | | Oil & Gas Operator | Sep 2025 |
| 6 | Beartooth Oil & Gas Company | Billings, MT 59103 | Oil & Gas Operator | Oct 2025 |
| 7 | Beeman Oil & Gas LLC | | Oil & Gas Operator | Oct 2025 |
| 8 | Bta Oil Producers | Midland, TX 79701 | Oil & Gas Operator | Sep 2009 |
| 9 | Chaco Energy Company | Denver, CO 80201 | Oil & Gas Operator | Oct 2025 |
| 10 | Citation Oil & Gas Corp | Houston, TX 77269 | Oil & Gas Operator | Dec 2025 |
| 11 | Crowheart Energy LLC | Baggs, WY 82321 | Oil & Gas Operator | Sep 2025 |
| 12 | Diversified Energy LLC | Parker, CO 80138 | Oil & Gas Operator | Aug 2025 |
| 13 | Entek GRB LLC | Denver, CO 80202 | Oil & Gas Operator | Oct 2021 |
| 14 | EOG Resources Inc | Midland, TX 79702 | Oil & Gas Operator | Dec 2025 |
| 15 | Forestar Group Inc | | Oil Operator | Sep 2015 |
| 16 | Foundation Energy Management, LLC | Addison, TX 75001 | Oil & Gas Operator | Dec 2025 |
| 17 | Gadeco, LLC | | Oil & Gas Operator | Oct 2025 |
| 18 | GRMR Oil And Gas LLC | Broomfield, CO 80021 | Oil & Gas Operator | Sep 2025 |
| 19 | Gulfport Energy Corporation | Oklahoma City, OK 73114-5003 | Oil & Gas Operator | Aug 2025 |
| 20 | Hilcorp Energy Company | Houston, TX 77208 | Oil & Gas Operator | Dec 2025 |
| 21 | HRM Resources III LLC | Denver, CO 80202 | Oil & Gas Operator | Jun 2022 |
| 22 | HRM Resources LLC | Denver, CO 80202 | Oil & Gas Operator | Aug 2015 |
| 23 | J-W Operating Company | Christoval, TX 76935 | Oil & Gas Operator | Dec 2025 |
| 24 | Jetta Operating Company, Inc. | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2025 |
| 25 | Joemar Wyoming Operating LLC | | Oil & Gas Operator | Oct 2025 |
| 26 | Kaiser-Francis Oil Company | Tulsa, OK 74121 | Oil & Gas Operator | Dec 2025 |
| 27 | Matrix Production Company | Sugar Land, TX 77478 | Oil & Gas Operator | Oct 2025 |
| 28 | McElvain Energy Inc | Denver, CO 80265 | Oil & Gas Operator | Nov 2019 |
| 29 | Merrion Oil & Gas Corp | Farmington, NM 87401 | Oil & Gas Operator | Oct 2025 |
| 30 | Mull Drilling Company | Wichita, KS 67206 | Oil & Gas Operator | Sep 2025 |
| 31 | North Shore Exploration & Prod LLC | Broomfield, CO 80021 | Oil & Gas Operator | Oct 2025 |
| 32 | Organic Energy Company LLC | | Oil & Gas Operator | Oct 2025 |
| 33 | Painted Pegasus Petroleum LLC | | Oil & Gas Operator | Jul 2024 |
| 34 | PDC Energy Inc | Denver, CO 80203 | Oil & Gas Operator | Sep 2025 |
| 35 | Peakview Operating Company, LLC | | Oil & Gas Operator | Jul 2025 |
| 36 | Peterson Energy Operating Inc | Loveland, CO 80537 | Oil & Gas Operator | Oct 2025 |
| 37 | Petroleum Resource Management Corp | Denver, CO 80203 | Oil & Gas Operator | Oct 2025 |
| 38 | Poc-I LLC | Casper, WY 82605 | Oil & Gas Operator | Oct 2025 |
| 39 | QB Energy Operating LLC | | Oil & Gas Operator | Sep 2025 |
| 40 | Qep Energy Company | Midland, TX 79701 | Oil & Gas Operator | Aug 2025 |
| 41 | Quicksilver Resources Inc | Fort Worth, TX 76102 | Oil & Gas Operator | Mar 2018 |
| 42 | Renegade Oil & Gas Company LLC | | Oil & Gas Operator | Sep 2025 |
| 43 | Samson Resources Company | Tulsa, OK 74103 | Oil & Gas Operator | Aug 2025 |
| 44 | Santa Fe Natural Resources, Inc. | Midland, TX 79705 | Oil & Gas Operator | Dec 2021 |
| 45 | Shawnee Oil Development Co Inc | | Oil & Gas Operator | Sep 2025 |
| 46 | Stehle Oil Company | | Oil Operator | Jun 2021 |
| 47 | Sunburst, Inc. | Wheat Ridge, CO 80033 | Oil & Gas Operator | Oct 2025 |
| 48 | SWN Production Company, LLC | Spring, TX 77391 | Oil & Gas Operator | Sep 2025 |
| 49 | Tom Brown Inc | Denver, CO 80202 | Oil & Gas Operator | Dec 2004 |
| 50 | True Oil LLC | Casper, WY 82602 | Oil & Gas Operator | Oct 2025 |
| 51 | Vitruvian Exploration LLC | The Woodlands, TX 77380 | Oil & Gas Operator | May 2016 |
| 52 | Wesco Operating Inc | Casper, WY 82602 | Oil & Gas Operator | Oct 2025 |
| 53 | Western Gas Resources Inc | Denver, CO 80202 | Oil & Gas Operator | Sep 2004 |
| 54 | Western Interior Energy Inc. | Denver, CO 80202 | Oil & Gas Operator | Dec 2016 |
| 55 | Wexpro Company | Rock Springs, WY 82902-0458 | Oil & Gas Operator | Sep 2025 |
| 56 | Wexpro Development Company | Salt Lake City, UT 84111 | Oil & Gas Operator | Sep 2025 |
| 57 | Wold Oil Properties Inc | Denver, CO 80203 | Oil & Gas Operator | Feb 2018 |
| 58 | Wolverine Resources LLC | | Oil & Gas Operator | Jan 2024 |
| 59 | Wyman* Louis M Dba Wyman Inc | | Oil & Gas Operator | Oct 2025 |
| 60 | Wynn-Crosby Operating, LTD. | Dallas, TX 75201 | Oil & Gas Operator | Dec 2025 |