| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Genesis Gas & Oil Colorado LLC | Oil & Gas Operator | Dec 2023 | |
| 2 | Geomet Operating Co., Inc. | Gas Operator | Dec 2013 | |
| 3 | Gordon Engineering Inc | Gas Operator | Sep 2025 | |
| 4 | Great Northern Gas Company | Denver, CO 80293-0602 | Oil & Gas Operator | Jun 2016 |
| 5 | Gulfport Energy Corporation | Oklahoma City, OK 73114-5003 | Oil & Gas Operator | Aug 2025 |