| 1 | Belco Energy Corp. | Dallas, TX 75231 | Oil & Gas Operator | Mar 2015 |
| 2 | Century Oil Company Inc | | Oil Operator | Dec 2024 |
| 3 | Cobra Oil & Gas Corporation | Wichita Falls, TX 76307 | Oil & Gas Operator | Oct 2025 |
| 4 | Consumers Energy Co | | Oil & Gas Operator | Apr 2010 |
| 5 | Dart Oil & Gas Corporation | Mason, MI 48854 | Oil & Gas Operator | Jun 2018 |
| 6 | Encana Oil & Gas (USA) Inc. | Denver, CO 80202 | Oil & Gas Operator | Oct 2020 |
| 7 | Eps Resources Corp | Englewood, CO 80111 | Oil & Gas Operator | Dec 2009 |
| 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 | Lambda Energy Resources LLC | | Oil & Gas Operator | Aug 2025 |
| 11 | Layline Oil And Gas LLC | Marion, MI 49665 | Oil & Gas Operator | Aug 2025 |
| 12 | Lease Management Inc | | Oil & Gas Operator | Jul 2025 |
| 13 | Marathon Oil Company | Houston, TX 77252 | Oil & Gas Operator | Aug 2025 |
| 14 | McClure Oil Company, Inc. | Midland, TX 79701 | Oil & Gas Operator | Oct 2025 |
| 15 | Merit Energy Company | Dallas, TX 75240 | Oil & Gas Operator | Oct 2025 |
| 16 | Miller Energy Company II LLC | | Oil & Gas Operator | Aug 2025 |
| 17 | Missaukee Oil And Gas Company LLC | | Oil & Gas Operator | Jun 2025 |
| 18 | Oryx Energy Company | Dallas, TX 75221 | Oil & Gas Operator | May 2002 |
| 19 | Rosekrans Janet A Dba J Oil Co | | Oil & Gas Operator | Jan 2003 |
| 20 | Sun Oil Company | Dallas, TX 75373 | Oil & Gas Operator | Dec 2021 |
| 21 | Tallman Industries Inc | | Oil Operator | Jul 2025 |
| 22 | Whiting Oil And Gas Corporation | Houston, TX 77002 | Oil & Gas Operator | Oct 2025 |