| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Peninsular Oil & Gas Co | Ada, MI 49301-96-96 | Oil & Gas Operator | Dec 2001 |
| 2 | Penn-Ohio Investment Corp. | New Philadelphi, OH 44663 | Oil & Gas Operator | Dec 2004 |
| 3 | Petro Evaluation Services Inc | Wooster, OH 44691 | Oil & Gas Operator | Dec 2023 |
| 4 | Pettigrew Pumping Service Inc | Ravenna, OH 44266 | Oil & Gas Operator | Dec 2024 |
| 5 | Poston Operating Co Inc | Ashley, OH 43003 | Oil & Gas Operator | Dec 2003 |