| 1 | Arkies Well Service Inc | | Oil Operator | Aug 2009 |
| 2 | Babcock & Brown Energy Inc | Denver, CO 80202 | Oil & Gas Operator | Dec 2007 |
| 3 | Baney Well Service Inc | Denver, CO 80237 | Oil Operator | Jun 2016 |
| 4 | Banner Petroleum LLC | | Oil Operator | Dec 2015 |
| 5 | Bellaire Oil Company | | Oil & Gas Operator | Dec 2023 |
| 6 | Beren Corporation | Wichita, KS 67206 | Oil & Gas Operator | Apr 2024 |
| 7 | Berenergy Corporation | Denver, CO 80217 | Oil & Gas Operator | Feb 2024 |
| 8 | C And M Oil Inc | Kimball, NE 69145 | Oil & Gas Operator | Jan 2023 |
| 9 | Cannon, Robert D. | | Oil & Gas Operator | Dec 2022 |
| 10 | Cardinal Oil Company, Inc. | | Oil Operator | Dec 2022 |
| 11 | Central Operating Inc | Denver, CO 80202 | Oil & Gas Operator | Feb 2024 |
| 12 | Chaco Energy Company | Denver, CO 80201 | Oil & Gas Operator | Feb 2024 |
| 13 | CM Production LLC | | Oil & Gas Operator | Aug 2020 |
| 14 | Colton Limited Liability Co | | Oil & Gas Operator | Sep 2023 |
| 15 | Coral Production Corporation | Denver, CO 80201 | Oil & Gas Operator | Feb 2024 |
| 16 | Davis, Edward Mike | | Oil Operator | Dec 2011 |
| 17 | Delta Petroleum Corp | Denver, CO 80202 | Oil & Gas Operator | Dec 2023 |
| 18 | Devon Energy Production Co | Oklahoma City, OK 73102 | Oil & Gas Operator | Jul 2015 |
| 19 | Diamond Operating, Inc. | | Oil & Gas Operator | Feb 2022 |
| 20 | Diversified Operating Corporation | Golden, CO 80401 | Oil & Gas Operator | Oct 2012 |
| 21 | Eagle Creek Resources, LLC | Sewickley, PA 15143 | Oil & Gas Operator | Dec 2022 |
| 22 | Evertson Operating Company Inc | Kimball, NE 69145 | Oil & Gas Operator | Nov 2022 |
| 23 | Exco Resources Inc | Dallas, TX 75251 | Oil & Gas Operator | Dec 2023 |
| 24 | Flatirons Resources LLC | Westminster, CO 80021 | Oil & Gas Operator | Dec 2022 |
| 25 | Foundation Energy MGT, LLC | | Oil & Gas Operator | Jan 2014 |
| 26 | Frerichs, Everett | | Oil Operator | Dec 2022 |
| 27 | Grayhorse Operating Inc | Tulsa, OK 74103-4439 | Oil & Gas Operator | Jan 2024 |
| 28 | Gregory, JD | | Oil & Gas Operator | Dec 2021 |
| 29 | HRM Resources II, LLC | Denver, CO 80202 | Oil & Gas Operator | Jan 2022 |
| 30 | Impetro Nonop LLC | | Oil Operator | Dec 2022 |
| 31 | Investment Equipment LLC | FT Morgan, CO 80701 | Oil & Gas Operator | Jan 2024 |
| 32 | KGH Operating Company | Billings, MT 59115 | Oil & Gas Operator | Jan 2024 |
| 33 | Kuhn Oil Co Inc | Timber Lake, SD 57656 | Oil Operator | Dec 2022 |
| 34 | Lone Mountain Prod | | Oil Operator | Dec 2018 |
| 35 | Monahan | | Oil Operator | Dec 2009 |
| 36 | O&Apos;Brien Energy Resources Corp | | Oil & Gas Operator | Dec 2022 |
| 37 | Peterson Energy Operating | | Oil Operator | Dec 2021 |
| 38 | Petrowest Energy Co Inc | | Oil & Gas Operator | Dec 2022 |
| 39 | Rampart Energy Company | | Oil & Gas Operator | Dec 2022 |
| 40 | Raymond Oil Co., Inc. | Wichita, KS 67201 | Oil & Gas Operator | Dec 2023 |
| 41 | Recovery Energy Inc | | Oil & Gas Operator | Jan 2014 |
| 42 | Remora Operating, LLC | Houston, TX 77056 | Oil & Gas Operator | Apr 2024 |
| 43 | Rta Petroleum, LLC | | Oil Operator | Dec 2022 |
| 44 | Singletree Resources Inc | | Oil & Gas Operator | Aug 2014 |
| 45 | Smith Oil Properties Inc | | Oil & Gas Operator | Nov 2022 |
| 46 | Smith Red Plains Production | | Oil & Gas Operator | Dec 2022 |
| 47 | Smith Red Plains Production LLC | | Oil Operator | Feb 2024 |
| 48 | Soper Production | | Oil & Gas Operator | Dec 2011 |
| 49 | Tidal Wave Energy, Inc. | New Castle, PA 16105 | Oil & Gas Operator | Jun 2022 |
| 50 | Tri Family Oil Co | | Oil Operator | Dec 2022 |
| 51 | Warner Ventures Inc | | Oil Operator | Dec 2022 |
| 52 | Wieser Oil LLC | | Oil & Gas Operator | Dec 2022 |
| 53 | Wind River Exploration Inc | Sewickley, PA 15143 | Oil & Gas Operator | Dec 2023 |
| 54 | Wistrom | | Oil Operator | Aug 2019 |
| 55 | Z & S Construction Co Inc | Kimball, NE 69145 | Oil & Gas Operator | Feb 2024 |