| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Mackinaw Two, LLC | Oil & Gas Operator | May 2020 | |
| 2 | Macquarie Longview Acquisitions, LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2008 |
| 3 | Magnolia Petrolrum Company | Oil Operator | Aug 2005 | |
| 4 | Marathon Oil Company | Houston, TX 77024 | Oil & Gas Operator | Mar 2024 |
| 5 | McGoldrick Oil Company | Shreveport, LA 71129 | Oil & Gas Operator | Jul 2020 |
| 6 | Mills Resource Services LLC | Hope, AR 71801 | Oil Operator | Dec 2023 |
| 7 | Mission Creek Opco, LLC | Magnolia, AR 71753 | Oil & Gas Operator | Feb 2024 |