| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Marathon Oil Co.-Rocky Mountain Region | Cody, WY 82414 | Oil Operator | Dec 1999 |
| 2 | Marathon Oil Com | Oil & Gas Operator | Dec 1996 | |
| 3 | Marathon Oil Company | Houston, TX 77252 | Oil & Gas Operator | Aug 2025 |
| 4 | McGinness Energy Company Inc | Wichita, KS 67206 | Oil & Gas Operator | Jun 2025 |
| 5 | McGinness Oil Company Of Kansas, Inc. | Wichita, KS 67206 | Oil & Gas Operator | Nov 2019 |
| 6 | Mull Drilling Company | Wichita, KS 67206 | Oil & Gas Operator | Aug 2025 |