| 1 | Arcadian Resources LLC | Glen Elder, KS 67446 | Oil & Gas Operator | May 2025 |
| 2 | Bach Oil Production | | Oil Operator | Jan 2025 |
| 3 | Baker Corporation | | Oil Operator | Dec 2024 |
| 4 | Berexco Inc. | Wichita, KS 67208 | Oil & Gas Operator | Oct 2009 |
| 5 | Berexco LLC | Wichita, KS 67206 | Oil & Gas Operator | May 2025 |
| 6 | Canyon Operating LLC | Dallas, TX 75225 | Oil & Gas Operator | May 2025 |
| 7 | Central Operating Inc | Denver, CO 80202 | Oil & Gas Operator | Mar 2025 |
| 8 | Coachman Energy Operating Company LLC | Englewood, CO 80111 | Oil & Gas Operator | May 2024 |
| 9 | Coleman Oil Company | Bartlesville, OK 74003 | Oil Operator | Dec 2024 |
| 10 | Credo Petroleum Corporation | Denver, CO 80202 | Oil & Gas Operator | Jan 2013 |
| 11 | Daystar Petroleum, Inc. | Eureka, KS 67045 | Oil & Gas Operator | Jan 2025 |
| 12 | DHW Energy LLC | | Oil Operator | Dec 2024 |
| 13 | Earth Sound, Inc | | Oil Operator | Dec 2017 |
| 14 | Energy Search Company Inc | Aurora, CO 80011 | Oil & Gas Operator | Jun 2021 |
| 15 | Forestar Petroleum Corporation | Denver, CO 80202 | Oil & Gas Operator | May 2017 |
| 16 | Gore Oil Company | Wichita, KS 67202 | Oil & Gas Operator | Jan 2025 |
| 17 | Great Plains Energy, Inc. | Lincoln, NE 68516 | Oil & Gas Operator | Apr 2025 |
| 18 | Kaler Oil Company | Gainesville, TX 76240 | Oil & Gas Operator | Dec 2024 |
| 19 | Murfin Drilling Company Inc | Wichita, KS 67202 | Oil & Gas Operator | Mar 2025 |
| 20 | Peak Nebraska Acquisitions, LLC | | Oil Operator | Dec 2010 |
| 21 | Pioneer Operations, LLC | Hays, KS 67601 | Oil Operator | Jan 2025 |
| 22 | Robuck Petroleum, LLC | Nacogdoches, TX 75965 | Oil & Gas Operator | May 2025 |
| 23 | Urban Oil & Gas Group, LLC | Plano, TX 75074 | Oil & Gas Operator | May 2025 |