| 1 | A N R Storage Company | | Oil & Gas Operator | Oct 2016 |
| 2 | Apollo Exploration And Development Inc | | Oil & Gas Operator | Jun 2025 |
| 3 | Arbor Resources LLC | | Oil & Gas Operator | Dec 2007 |
| 4 | B H R Petroleum Inc | | Oil & Gas Operator | Apr 2006 |
| 5 | Binney Duane Dba Bens Petroleum Co | | Oil Operator | Apr 2012 |
| 6 | Black Star Energy Inc | | Oil Operator | May 2004 |
| 7 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Jun 2025 |
| 8 | Christian Oil Co | | Oil & Gas Operator | Jul 2025 |
| 9 | CMS Oil And Gas Company | Jackson, MI 49201 | Oil & Gas Operator | Oct 2002 |
| 10 | Conoco Inc. | Houston, TX 77252 | Oil & Gas Operator | Mar 2015 |
| 11 | Consumers Energy Co | | Oil & Gas Operator | Apr 2010 |
| 12 | Dart Oil & Gas Corporation | Mason, MI 48854 | Oil & Gas Operator | Jun 2018 |
| 13 | Exxonmobil Oil Corp | Houston, TX 77210 | Oil & Gas Operator | Jul 2025 |
| 14 | Federated Natural Resources Corp | | Oil & Gas Operator | Oct 1989 |
| 15 | Fisher McCall Oil And Gas Inc | | Oil Operator | Dec 2014 |
| 16 | Gage Energy Inc | | Oil Operator | Nov 2015 |
| 17 | Gas Ventures LLC | Thermopolis, WY 82443 | Oil & Gas Operator | Oct 2020 |
| 18 | Ginger Oil | | Oil Operator | Mar 2025 |
| 19 | Global Natural Resources | Houston, TX 77002 | Oil & Gas Operator | Dec 1999 |
| 20 | Gorlewski Resources LLC And C-More Production LLC | | Oil Operator | Mar 2025 |
| 21 | Heat Controller Inc | Jackson, MI 49204 | Oil & Gas Operator | Dec 1996 |
| 22 | Jet Oil Corp | | Oil & Gas Operator | Feb 1999 |
| 23 | Kalkaska Oilfield Services Inc | | Oil Operator | Aug 2006 |
| 24 | Kulka And Schmidt Inc | | Oil & Gas Operator | Dec 1992 |
| 25 | L And G Drilling | | Oil Operator | Jun 1987 |
| 26 | M G U Development Co | | Oil & Gas Operator | Jun 1987 |
| 27 | M L Energy | | Oil Operator | Feb 2015 |
| 28 | M L Energy LLC | | Oil Operator | Aug 2025 |
| 29 | Meridian Production Services LLC | | Oil & Gas Operator | Jun 2025 |
| 30 | Michigan Geosearch Inc | Lansing, MI 48917 | Oil & Gas Operator | May 2025 |
| 31 | Michigan Oil Co. | FT Worth, TX 76117 | Oil & Gas Operator | Feb 1998 |
| 32 | Midway Terrel Operating Co | | Oil & Gas Operator | Dec 1999 |
| 33 | Muskegon Development Company | MT Pleasant, MI 48858 | Oil & Gas Operator | Oct 2025 |
| 34 | Nuenergy LLC | | Oil & Gas Operator | Jul 2025 |
| 35 | Omimex Energy, Inc. | Fort Worth, TX 76120 | Oil & Gas Operator | Jun 2025 |
| 36 | Oryx Energy Company | Dallas, TX 75221 | Oil & Gas Operator | May 2002 |
| 37 | Patrick Exploration Company | Tulsa, OK 74136 | Oil & Gas Operator | Apr 2011 |
| 38 | Pats Rent All | | Oil Operator | Jul 2002 |
| 39 | Petro Vest Operating LLC | | Oil Operator | Aug 2013 |
| 40 | Pride Energy Company | Tulsa, OK 74170 | Oil & Gas Operator | Oct 2025 |
| 41 | R And B Energy Co LLC | | Oil Operator | Dec 2011 |
| 42 | Range Michigan LLC | | Oil Operator | Dec 2020 |
| 43 | Sullivan & Co. | Tulsa, OK 74114 | Oil & Gas Operator | May 2022 |
| 44 | Synergy Development Corp | | Oil Operator | Apr 2011 |
| 45 | T X P Inc Formerly Petrotech Inc | | Oil & Gas Operator | Jul 1992 |
| 46 | Terrel Production Co | | Oil & Gas Operator | May 2025 |
| 47 | Tola Production Company | Dallas, TX 75367 | Oil & Gas Operator | Oct 2025 |
| 48 | Traverse Oil Co. | | Oil & Gas Operator | Nov 1983 |
| 49 | Trolz Glynn And Associates Inc | | Oil & Gas Operator | Apr 1995 |
| 50 | Venus Exploration, Inc. | San Antonio, TX 78209 | Oil & Gas Operator | Jul 2013 |
| 51 | West Bay Exploration Company | Muenster, TX 76252 | Oil & Gas Operator | Jul 2025 |