| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Big Sky Energy, LLC | Cody, WY 82414 | Oil & Gas Operator | May 2024 |
| 2 | Encana Oil & Gas (USA) Inc. | Denver, CO 80202 | Oil & Gas Operator | Oct 2020 |
| 3 | Energy Equity Company | Columbus, MT 59019 | Oil & Gas Operator | Mar 2025 |
| 4 | Montana Power Company | Butte, MT 59701 | Oil & Gas Operator | Apr 2002 |
| 5 | Montana Power Gas Company | Oil & Gas Operator | Apr 2002 | |
| 6 | Mountain Pacific General Inc. | Cut Bank, MT 59427 | Oil & Gas Operator | Jun 2022 |
| 7 | Saga Petroleum, LLC | Denver, CO 80202 | Oil & Gas Operator | Feb 2018 |