| 1 | Arbor Operating LLC | | Oil & Gas Operator | Mar 2024 |
| 2 | Arbor Resources LLC | | Oil & Gas Operator | Dec 2007 |
| 3 | B And C Oil Inc | | Oil & Gas Operator | Mar 2012 |
| 4 | Belden And Blake Corp Dba Ward Lake Energy | | Oil & Gas Operator | Jul 2020 |
| 5 | Breitburn Operating Limited Partnership | | Oil & Gas Operator | Aug 2022 |
| 6 | Brewer Robert A And Karen A | | Oil Operator | Dec 2025 |
| 7 | D T E Gas And Oil Co | | Gas Operator | May 2007 |
| 8 | Delta Oil Co Inc | | Oil & Gas Operator | Oct 2023 |
| 9 | Dominion Midwest Energy Inc | | Oil & Gas Operator | Dec 2007 |
| 10 | Don Yohe Enterprises Inc. | Armada, MI 48005 | Oil & Gas Operator | Apr 2018 |
| 11 | Force Antrim Development Inc | | Gas Operator | Dec 1999 |
| 12 | Highmount Midwest Energy LLC | | Oil & Gas Operator | Sep 2011 |
| 13 | HRF Exploration & Production LLC | Gaylord, MI 49734-0160 | Gas Operator | Dec 2025 |
| 14 | HRF Exploration & Production,Inc | Denver, CO 80237 | Oil & Gas Operator | Mar 2009 |
| 15 | Jordan Development Company LLC | Traverse City, MI 49686 | Oil & Gas Operator | Oct 2025 |
| 16 | Lambda Energy Resources LLC | | Oil & Gas Operator | Nov 2025 |
| 17 | Lease Management Inc | | Oil & Gas Operator | Nov 2025 |
| 18 | Mercury Exploration Co. | Fort Worth, TX 76104 | Oil & Gas Operator | Dec 2006 |
| 19 | Merit Energy Company | Dallas, TX 75240 | Oil & Gas Operator | Dec 2025 |
| 20 | Missaukee Oil And Gas Company LLC | | Oil & Gas Operator | Nov 2025 |
| 21 | Muskegon Development Company | MT Pleasant, MI 48858 | Oil & Gas Operator | Dec 2025 |
| 22 | Muskegon Operating Company LLC | | Oil & Gas Operator | Nov 2025 |
| 23 | Muzyl Oil Corp | | Oil & Gas Operator | Dec 2025 |
| 24 | Nuenergy LLC | | Oil & Gas Operator | Nov 2025 |
| 25 | O I L Energy Corp | | Oil & Gas Operator | Oct 2017 |
| 26 | Omega Operating, Inc. | Odessa, TX 79769 | Oil & Gas Operator | Mar 2001 |
| 27 | Oryx Energy Company | Dallas, TX 75221 | Oil & Gas Operator | May 2002 |
| 28 | Paxton Resources LLC | | Oil & Gas Operator | Dec 2025 |
| 29 | Petroleum Development Corporation | Denver, CO 80202 | Oil & Gas Operator | Dec 2017 |
| 30 | Quicksilver Resources Inc | Fort Worth, TX 76102 | Oil & Gas Operator | Mar 2018 |
| 31 | Riverside Energy Michigan LLC | | Oil & Gas Operator | Nov 2025 |
| 32 | Riviera Operating, LLC | Houston, TX 77002 | Oil & Gas Operator | Nov 2025 |
| 33 | Savoy Energy LP | Traverse City, MI 49685-1560 | Oil & Gas Operator | Nov 2025 |
| 34 | Swepi LP | Houston, TX 77079 | Oil & Gas Operator | Jul 2020 |
| 35 | Terra Energy Co LLC | | Oil & Gas Operator | Apr 2018 |
| 36 | Terra Energy LTD | | Oil & Gas Operator | Apr 2018 |
| 37 | Wicklund Enterprises Inc | | Oil Operator | Dec 2024 |
| 38 | Wolverine Environmental Production Inc | | Oil & Gas Operator | Sep 2000 |