| 1 | Arbor Operating LLC | | Oil & Gas Operator | Mar 2024 |
| 2 | Arbor Resources LLC | | Oil & Gas Operator | Dec 2007 |
| 3 | Belden And Blake Corp Dba Ward Lake Energy | | Oil & Gas Operator | Jul 2020 |
| 4 | Breitburn Operating Limited Partnership | | Oil & Gas Operator | Aug 2022 |
| 5 | Brown, H. L., Jr. | Midland, TX 79702 | Oil & Gas Operator | May 2002 |
| 6 | CMS Oil And Gas Company | Jackson, MI 49201 | Oil & Gas Operator | Oct 2002 |
| 7 | Cowen Michael T | | Oil & Gas Operator | Dec 2009 |
| 8 | Cronus Exploration Co LLC | | Oil & Gas Operator | Nov 2024 |
| 9 | D T E Gas And Oil Co | | Gas Operator | May 2007 |
| 10 | Delta Oil Co Inc | | Oil & Gas Operator | Oct 2023 |
| 11 | Dominion Midwest Energy Inc | | Oil & Gas Operator | Dec 2007 |
| 12 | Don Yohe Enterprises And Devonian Energy Inc | | Gas Operator | Dec 1999 |
| 13 | Don Yohe Enterprises Inc. | Armada, MI 48005 | Oil & Gas Operator | Apr 2018 |
| 14 | Enervest Operating LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2024 |
| 15 | Federated Oil And Gas Properties Inc | | Oil & Gas Operator | Oct 2024 |
| 16 | Force Antrim Development Inc | | Gas Operator | Dec 1999 |
| 17 | Fruehauf Antrim LP | | Gas Operator | Jan 2005 |
| 18 | Highmount Midwest Energy LLC | | Oil & Gas Operator | Sep 2011 |
| 19 | Hoy Production LLC | | Gas Operator | Sep 2024 |
| 20 | HRF Exploration & Production LLC | Gaylord, MI 49734-0160 | Gas Operator | Dec 2024 |
| 21 | HRF Exploration & Production,Inc | Denver, CO 80237 | Oil & Gas Operator | Mar 2009 |
| 22 | J 5 Inc | | Gas Operator | Nov 2014 |
| 23 | J D B Energy LLC | | Gas Operator | Nov 2016 |
| 24 | Jennings Petroleum Corp | | Oil & Gas Operator | Dec 1988 |
| 25 | Jordan Development Company LLC | Traverse City, MI 49686 | Oil & Gas Operator | Sep 2024 |
| 26 | Lambda Energy Resources LLC | | Oil & Gas Operator | Oct 2024 |
| 27 | Lindenmuth & Associates Inc | Austin, TX 78703 | Oil & Gas Operator | Aug 2024 |
| 28 | Mack Oil Corp | | Oil & Gas Operator | Nov 1998 |
| 29 | Mercury Exploration Co | Fort Worth, TX 76104 | Oil & Gas Operator | Dec 2006 |
| 30 | Merit Energy Company | Dallas, TX 75240 | Oil & Gas Operator | Dec 2024 |
| 31 | Muskegon Development Company | MT Pleasant, MI 48858 | Oil & Gas Operator | Dec 2024 |
| 32 | Muskegon Operating Company LLC | | Oil & Gas Operator | Oct 2024 |
| 33 | Muzyl Oil Corp | | Oil & Gas Operator | Oct 2024 |
| 34 | Northstar Energy LLC | | Gas Operator | Sep 2020 |
| 35 | Nu Energy Operating Inc | | Oil & Gas Operator | May 2024 |
| 36 | O I L Energy Corp | | Oil & Gas Operator | Oct 2017 |
| 37 | Omega Operating, Inc. | Odessa, TX 79769 | Oil & Gas Operator | Mar 2001 |
| 38 | Omimex Energy, Inc. | Fort Worth, TX 76120 | Oil & Gas Operator | Jul 2024 |
| 39 | Petroleum Development Corporation | Denver, CO 80202 | Oil & Gas Operator | Dec 2017 |
| 40 | Quicksilver Resources Inc | Fort Worth, TX 76102 | Oil & Gas Operator | Mar 2018 |
| 41 | Riverside Energy Michigan LLC | | Oil & Gas Operator | Sep 2024 |
| 42 | Riviera Operating, LLC | Houston, TX 77002 | Oil & Gas Operator | Oct 2024 |
| 43 | Samson Resources Company | Tulsa, OK 74103 | Oil & Gas Operator | Sep 2024 |
| 44 | Savoy Energy LP | Traverse City, MI 49685-1560-1560 | Oil & Gas Operator | May 2024 |
| 45 | Savoy Exploration Inc | | Oil & Gas Operator | Feb 2020 |
| 46 | Shell Onshore Ventures Inc | Houston, TX 77210 | Gas Operator | Jun 2002 |
| 47 | Swepi LP | Houston, TX 77079 | Oil & Gas Operator | Jul 2020 |
| 48 | Tai Inc Dba Trendwell Antrim Inc | | Gas Operator | Sep 2024 |
| 49 | Terra Energy Co LLC | | Oil & Gas Operator | Apr 2018 |
| 50 | Terra Energy LTD | | Oil & Gas Operator | Apr 2018 |
| 51 | Trendwell Energy Corporation | | Oil & Gas Operator | Aug 2024 |
| 52 | V C P Michigan, LLC | | Oil & Gas Operator | Oct 2024 |
| 53 | Whiting Oil And Gas Corporation | Houston, TX 77002 | Oil & Gas Operator | Dec 2024 |
| 54 | Wolverine Environmental Production Inc | | Oil & Gas Operator | Sep 2000 |