| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | M K M LTD | Oil & Gas Operator | Jun 1998 | |
| 2 | Marathon Oil Company | Houston, TX 77252 | Oil & Gas Operator | Sep 2025 |
| 3 | McClure Oil Company, Inc. | Midland, TX 79701 | Oil & Gas Operator | Nov 2025 |
| 4 | Meridian Resources LLC | Evansville, IN 47715 | Oil Operator | Jul 2024 |
| 5 | Mid Atlantic Oil Co | Hillsdale, MI 49242 | Oil & Gas Operator | Dec 1999 |
| 6 | Miller Brothers | Oil & Gas Operator | Nov 2000 | |
| 7 | Miller Exploration Company | Tulsa, OK 74136-1020 | Oil & Gas Operator | Mar 2015 |