| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | K & W Oil Company | MT Carmel, IL 62830 | Oil & Gas Operator | May 2013 |
| 2 | Keller Brothers & Co | Nelsonville, OH 45764 | Oil Operator | Dec 2019 |
| 3 | Kenoil LLC | Wooster, OH 44691 | Oil & Gas Operator | Dec 2023 |
| 4 | Ketcham VIctor A | Columbus, OH 43214 | Oil Operator | Dec 2021 |
| 5 | Kilbarger Investments Inc | Logan, OH 43138 | Oil & Gas Operator | Dec 2022 |
| 6 | Kingston Oil Corp | Zanesville, OH 43701 | Oil & Gas Operator | Dec 2000 |
| 7 | Knox Energy Inc | Pataskala, OH 43062 | Oil & Gas Operator | Dec 2023 |
| 8 | KST Oil & Gas Co Inc | Tallmadge, OH 44278-1142-1142 | Oil & Gas Operator | Dec 1995 |