| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Cedar Valley Energy Inc | Wooster, OH 44691 | Oil & Gas Operator | Dec 2021 |
| 2 | Cgas Expl Inc | Columbus, OH 43214-1862 | Oil & Gas Operator | Dec 2006 |
| 3 | Clyde H & Rae M Peters | Waterford, PA 16441-8872 | Gas Operator | Dec 2007 |
| 4 | Cobra Resources LLC | N Jackson, OH 44451 | Oil & Gas Operator | Dec 2023 |
| 5 | Columbia Gas Trans LLC | Charleston, WV 25325-1273 | Gas Operator | Dec 1987 |
| 6 | Columbia Natural Res Inc | Charleston, WV 25362-0070 | Gas Operator | Dec 2008 |
| 7 | Commodore Energy Co | Rolling Hills, CA 90274-5265 | Oil & Gas Operator | Dec 2007 |
| 8 | Coterra Energy Inc | Pittsburgh, PA 15275-1121 | Oil & Gas Operator | Feb 2024 |
| 9 | CRS Energy LLC | Stoneboro, PA 16153 | Oil & Gas Operator | Dec 2023 |