| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Macum Energy Inc | Billings, MT 59104 | Oil & Gas Operator | Aug 2021 |
| 2 | Midway Energy, LLC | Thermopolis, WY 82443 | Oil Operator | Jun 2025 |
| 3 | Montana Power Company | Butte, MT 59701 | Oil & Gas Operator | Apr 2002 |
| 4 | Montana Power Gas Company | Oil & Gas Operator | Apr 2002 |