| 101 | M & M Resources Inc | Oklahoma City, OK 73156 | Oil & Gas Operator | Sep 2018 |
| 102 | M M Energy Inc | Oklahoma City, OK 73156 | Oil & Gas Operator | Feb 2026 |
| 103 | Manuel Corporation | Wichita, KS 67206 | Oil & Gas Operator | Feb 2026 |
| 104 | Marathon Oil Company | Houston, TX 77252 | Oil & Gas Operator | Feb 2026 |
| 105 | McCoy Petroleum Corporation | Wichita, KS 67207 | Oil & Gas Operator | Feb 2026 |
| 106 | Medicine Bow Operating Company | Houston, TX 77002 | Oil & Gas Operator | Apr 2014 |
| 107 | Merit Energy Company, LLC | Dallas, TX 75009 | Oil & Gas Operator | Dec 2025 |
| 108 | Metro Energy Group, Inc. | Bossier City, LA 71112 | Oil & Gas Operator | May 2013 |
| 109 | Mid-Continent Energy Operating Company | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2026 |
| 110 | Midwestern Exploration Company | Edmond, OK 73013 | Oil & Gas Operator | May 2025 |
| 111 | Mobil Oil Corpor | | Oil & Gas Operator | Dec 1996 |
| 112 | Mustang Drilling | | Oil & Gas Operator | Nov 1996 |
| 113 | Mustang Drilling, Inc. | Henderson, TX 75653 | Oil & Gas Operator | Aug 2024 |
| 114 | Mustang Oil & Gas Corporation | Wichita Falls, TX 76308 | Oil & Gas Operator | Jul 2021 |
| 115 | Nadel & Gussman | Tulsa, OK 74103 | Oil & Gas Operator | May 2007 |
| 116 | Nadel And Gussman LLC | Tulsa, OK 74119 | Oil & Gas Operator | Apr 2026 |
| 117 | Nairn, Robert | Elkhart, KS 67950 | Gas Operator | Apr 2011 |
| 118 | Nash Oil & Gas, Inc. | Newton, KS 67114 | Oil & Gas Operator | Dec 2025 |
| 119 | National Coopera | | Oil & Gas Operator | Mar 1992 |
| 120 | National Cooperative Refinery Assoc. | Great Bend, KS 67530 | Oil & Gas Operator | Feb 2023 |
| 121 | National Oil Co Ohio The | Columbus, OH 43215 | Oil & Gas Operator | Sep 1999 |
| 122 | Norstar Petroleum Inc | Englewood, CO 80112 | Oil & Gas Operator | Dec 2025 |
| 123 | Novy Oil & Gas, Inc. | Goddard, KS 67052 | Oil & Gas Operator | Feb 2026 |
| 124 | Ocean Energy Resources Inc. | Houston, TX 77002 | Oil & Gas Operator | Mar 2025 |
| 125 | Oil Producers, Inc. Of Kansas | Wichita, KS 67206 | Oil & Gas Operator | Apr 2026 |
| 126 | Oxy USA Inc | Houston, TX 77046 | Oil & Gas Operator | Apr 2026 |
| 127 | Palmer Oil, Inc. | Garden City, KS 67846 | Oil & Gas Operator | Dec 2025 |
| 128 | Panhandle Easter | | Gas Operator | Dec 1986 |
| 129 | Pantera Energy Company | Amarillo, TX 79101 | Oil & Gas Operator | Apr 2026 |
| 130 | Patrick R J Oper | | Oil & Gas Operator | Jan 1995 |
| 131 | Patton Oil Compa | | Oil & Gas Operator | Nov 1994 |
| 132 | Pioneer Exploration, LLC | Houston, TX 77090 | Oil & Gas Operator | Dec 2025 |
| 133 | Pioneer Natural Resources USA Inc | Irving, TX 75039 | Oil & Gas Operator | Dec 2025 |
| 134 | Pioneer Oil Company, Inc. | Vincennes, IN 47501 | Oil & Gas Operator | Dec 2025 |
| 135 | Presco Western LLC | Houston, TX 77046 | Oil & Gas Operator | Dec 2025 |
| 136 | Pride Energy Company, A General Partnership | Tulsa, OK 74170 | Oil & Gas Operator | Aug 2021 |
| 137 | Protege Energy LLC | Tulsa, OK 74135 | Oil & Gas Operator | Jan 2018 |
| 138 | R.J. Patrick Operating Co. | | Oil & Gas Operator | Jun 2006 |
| 139 | Raker Resources LLC | Houston, TX 77042 | Oil & Gas Operator | Apr 2026 |
| 140 | Red Hills Energy, LLC | Medicine Lodge, KS 67104 | Oil & Gas Operator | Dec 2025 |
| 141 | Regency Field Services LLC | Dallas, TX 75201 | Oil Operator | Jul 2017 |
| 142 | Resource Oil And Gas, LLC | Oklahoma City, OK 73114 | Oil & Gas Operator | Apr 2026 |
| 143 | Riviera Operating, LLC | Houston, TX 77002 | Oil & Gas Operator | Feb 2026 |
| 144 | Roemer Oil Company | Denver, CO 80202 | Oil & Gas Operator | Nov 1998 |
| 145 | S & S Oil | Ponca City, OK 74601 | Oil & Gas Operator | Dec 2009 |
| 146 | Samson Resources Company | Tulsa, OK 74103 | Oil & Gas Operator | Jan 2026 |
| 147 | Samuel Gary Jr. & Associates, Inc. | Denver, CO 80202 | Oil & Gas Operator | Dec 2025 |
| 148 | San Marco Petroleum Inc | Denver, CO 80293 | Oil & Gas Operator | Dec 2025 |
| 149 | Scout Energy Management LLC | Dallas, TX 75240 | Oil & Gas Operator | Apr 2026 |
| 150 | Sovereign Operating Company, LLC | Denver, CO 80202 | Oil & Gas Operator | Apr 2016 |
| 151 | Spess Oil Company, A General Partnership | Cleveland, OK 74020 | Oil & Gas Operator | Dec 2025 |
| 152 | Stelbar Oil Corporation, Inc. | Wichita, KS 67206 | Oil & Gas Operator | Dec 2025 |
| 153 | Stewart, William C. | Amarillo, TX 79105 | Gas Operator | May 2003 |
| 154 | Stone Oil Compan | | Oil Operator | Jan 1990 |
| 155 | Stone, D J | Palo Alto, CA 94301 | Oil & Gas Operator | Sep 1985 |
| 156 | Stromquist C Dal | | Oil & Gas Operator | Aug 1991 |
| 157 | Stromquist, C. Dale, A General Partnership | Liberal, KS 67901 | Oil & Gas Operator | Aug 2010 |
| 158 | Suerte Oil Compa | | Oil & Gas Operator | Oct 1995 |
| 159 | Superior Oil Com | | Oil & Gas Operator | Dec 1994 |
| 160 | Taylor Explorati | | Oil & Gas Operator | Jun 1985 |
| 161 | Texaco Explorati | | Oil & Gas Operator | Dec 1996 |
| 162 | Texaco Exploration & Prod Inc | Houston, TX 77236 | Oil & Gas Operator | Dec 2025 |
| 163 | Texkan Resources, LLC | Odessa, TX 79765 | Oil & Gas Operator | Jun 2025 |
| 164 | Trans Pacific Oi | | Oil & Gas Operator | May 1995 |
| 165 | Trans Pacific Oil Corporation | Wichita, KS 67202 | Oil & Gas Operator | Feb 2026 |
| 166 | Triple Seven, Inc. | Oklahoma City, OK 73132 | Oil & Gas Operator | Nov 1997 |
| 167 | Tucker, Stephen A. | Independence, KS 67301 | Oil Operator | Feb 2009 |
| 168 | United Meridian | | Oil Operator | Dec 1992 |
| 169 | Unknown | Houston, TX 77208 | Oil & Gas Operator | Dec 2024 |
| 170 | Vintage Petroleu | | Oil & Gas Operator | Dec 1995 |
| 171 | Vintage Petroleum, LLC | Houston, TX 77210 | Oil & Gas Operator | Dec 2019 |
| 172 | Weinkauf Petroleum, Inc. | Tulsa, OK 74136 | Oil & Gas Operator | Feb 2026 |
| 173 | Wheeler Oil Company | Sperry, OK 74073-9417 | Oil & Gas Operator | Dec 2025 |
| 174 | White, Edgar W. | Elkhart, KS 67950 | Gas Operator | Dec 2015 |
| 175 | White, Kenneth S. | Wichita, KS 67220 | Oil & Gas Operator | Sep 2022 |
| 176 | White, Robert F. | Wichita, KS 67220 | Oil & Gas Operator | Feb 2007 |
| 177 | Williford Energy Company | Tulsa, OK 74135 | Oil & Gas Operator | Apr 2026 |
| 178 | Wilson Charles B | | Oil & Gas Operator | Dec 1996 |
| 179 | WM KS Energy Resources LLC | Shreveport, LA 71101 | Oil & Gas Operator | Nov 2019 |
| 180 | Wynn-Crosby Operating, LTD. | Dallas, TX 75201 | Oil & Gas Operator | Apr 2026 |
| 181 | XTO Energy Inc. | Spring, TX 77389 | Oil & Gas Operator | Apr 2026 |