| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Eastern Petroleu | Oil & Gas Operator | Oct 1993 | |
| 2 | Elm III Operating Company LLC | Edmond, OK 73013 | Oil & Gas Operator | Jun 2025 |
| 3 | Endeavor Energy Resources, LP | Midland, TX 79701 | Oil & Gas Operator | Mar 2025 |
| 4 | Enervest Operating LLC | Houston, TX 77002 | Oil & Gas Operator | Oct 2025 |
| 5 | Excalibur Production Company, Inc. | McPherson, KS 67460 | Oil & Gas Operator | Jun 2025 |