| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Callon Petroleum Company | Natchez, MS 39120 | Oil & Gas Operator | Jan 2000 |
| 2 | Cities Service Oil Co. | Oil & Gas Operator | Dec 1986 | |
| 3 | Cody Operating, Inc. | Oil & Gas Operator | Jul 2025 | |
| 4 | Coho Resources Inc. | Dallas, TX 75240 | Oil & Gas Operator | Jul 2002 |
| 5 | Columbia Petroleum LLC | Oyster Bay, NY 11771 | Oil & Gas Operator | Feb 2025 |
| 6 | Continental Oil Co. | Durango, CO 81301 | Oil & Gas Operator | Dec 1983 |