| 1 | Anr Production Company | Houston, TX 77046 | Oil & Gas Operator | Aug 2017 |
| 2 | Apollo Exploration And Development Inc | | Oil & Gas Operator | Jun 2025 |
| 3 | Arbor Operating LLC | | Oil & Gas Operator | Mar 2024 |
| 4 | Arbor Resources LLC | | Oil & Gas Operator | Dec 2007 |
| 5 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Jun 2025 |
| 6 | Breitburn Operating Limited Partnership | | Oil & Gas Operator | Aug 2022 |
| 7 | CMS Oil And Gas Company | Jackson, MI 49201 | Oil & Gas Operator | Oct 2002 |
| 8 | H And H Star Energy Inc Dba Petrostar Energy | | Oil & Gas Operator | Feb 2004 |
| 9 | Howard Energy Co Inc | | Oil & Gas Operator | Aug 2011 |
| 10 | Jetta Operating Company Inc | Fort Worth, TX 76102 | Oil & Gas Operator | Oct 2025 |
| 11 | Lambda Energy Resources LLC | | Oil & Gas Operator | Aug 2025 |
| 12 | Merit Energy Company | Dallas, TX 75240 | Oil & Gas Operator | Oct 2025 |
| 13 | Mosbacher Energy Company | Houston, TX 77002 | Oil & Gas Operator | Oct 2025 |
| 14 | Northern Processors Inc | The Woodlands, TX 77387-9385 | Oil & Gas Operator | Sep 2010 |
| 15 | Pangborn Tom Dba Pangborn Exploration | | Oil & Gas Operator | Jan 1993 |
| 16 | Quicksilver Resources Inc | Fort Worth, TX 76102 | Oil & Gas Operator | Mar 2018 |
| 17 | Riverside Energy Michigan LLC | | Oil & Gas Operator | Jul 2025 |
| 18 | Schmude Oil Co | | Oil & Gas Operator | Mar 2014 |
| 19 | Schmude Oil Inc | | Oil & Gas Operator | Aug 2025 |
| 20 | Swepi LP | Houston, TX 77079 | Oil & Gas Operator | Jul 2020 |
| 21 | T2 Operating Corporation | Denver, CO 80202 | Oil & Gas Operator | Oct 2025 |
| 22 | Trendwell Energy Corporation | | Oil & Gas Operator | Aug 2025 |
| 23 | White Rock Oil & Gas, LLC | Plano, TX 75024 | Oil & Gas Operator | Oct 2025 |
| 24 | Whiting Oil And Gas Corporation | Houston, TX 77002 | Oil & Gas Operator | Oct 2025 |