| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Natural Gas Processing Company | Worland, WY 82401 | Oil & Gas Operator | Aug 2025 |
| 2 | New Horizon Resources LLC | Houston, TX 77057 | Oil & Gas Operator | Oct 2025 |
| 3 | Northern Producing LLC | Shelby, MT 59474 | Oil Operator | Jul 2025 |
| 4 | Northstar Gas Company Inc | Oil & Gas Operator | Jan 2016 | |
| 5 | Northwestern Corporation | Butte, MT 59701 | Oil & Gas Operator | Jul 2025 |
| 6 | Northwestern Energy, LLC | Butte, MT 59701 | Oil & Gas Operator | Dec 2004 |
| 7 | NRC Development, LLC | Gas Operator | Nov 2002 |