| 101 | Falcon Exploration, Inc. | Wichita, KS 67202 | Oil & Gas Operator | Feb 2026 |
| 102 | Farmer John O Inc | Russell, KS 67665 | Oil & Gas Operator | Feb 2026 |
| 103 | Fell Oil & Gas C | | Oil Operator | Oct 1991 |
| 104 | Fina Oil & Chemi | | Oil & Gas Operator | Oct 1995 |
| 105 | Fossil Creek Energy, LLC | Russell, KS 67665 | Oil Operator | Feb 2026 |
| 106 | Fossil Energy, LLC | Russell, KS 67665 | Oil Operator | Feb 2026 |
| 107 | Four-Way Operating, Inc. | Great Bend, KS 67530 | Oil Operator | Sep 2013 |
| 108 | Frontier Oil Com | | Oil & Gas Operator | May 1995 |
| 109 | G L M Company | | Oil Operator | Feb 2026 |
| 110 | Geodessa Corpora | | Oil Operator | Jul 1984 |
| 111 | Geoson Oil Compa | | Oil Operator | Jun 1984 |
| 112 | Gerald Michaelis Oil | | Oil Operator | Feb 2026 |
| 113 | Gideon Oil Operations | | Oil Operator | Feb 2026 |
| 114 | Ginther Oil, Inc. | Russell, KS 67665 | Oil Operator | Nov 2019 |
| 115 | Glacier Petroleu | | Oil & Gas Operator | Nov 1995 |
| 116 | Gore Oil Company | Wichita, KS 67202 | Oil & Gas Operator | Feb 2026 |
| 117 | Grady Bolding Corporation | Ellinwood, KS 67526 | Oil & Gas Operator | Feb 2026 |
| 118 | Graham-Michaelis | | Oil & Gas Operator | Nov 1996 |
| 119 | Graham-Michaelis Corporation | Wichita, KS 67201 | Oil & Gas Operator | Dec 2010 |
| 120 | Grand Mesa Operating Company | Wichita, KS 67206 | Oil & Gas Operator | Mar 2026 |
| 121 | Great Bend Oil P | | Oil Operator | Jun 1991 |
| 122 | Griggs Oil Incor | | Oil & Gas Operator | May 1994 |
| 123 | Guthrie Oil Comp | | Oil & Gas Operator | Dec 1994 |
| 124 | H & C Oil Operat | | Oil & Gas Operator | Dec 1996 |
| 125 | H & D Exploration LLC | Hoisington, KS 67544 | Oil & Gas Operator | Feb 2026 |
| 126 | H & H Oil Compan | | Oil & Gas Operator | Aug 1995 |
| 127 | H & H Production, Inc. | Topeka, KS 66614 | Oil Operator | May 1997 |
| 128 | H-30 Incorporate | | Oil & Gas Operator | Nov 1990 |
| 129 | Hall, J.J. Operating Co., Inc. | Lakewood, CO 80215 | Oil Operator | Jan 2005 |
| 130 | Hallwood Petrole | | Oil & Gas Operator | Apr 1999 |
| 131 | Harms Petroleum | | Oil & Gas Operator | May 1991 |
| 132 | Hartman Oil Company Inc | Wichita, KS 67206 | Oil & Gas Operator | Feb 2026 |
| 133 | Hayes Oil & Gas LLC | Attica, KS 67009 | Oil & Gas Operator | Feb 2026 |
| 134 | Herman Krug - Oil Operations | | Oil Operator | Jan 2026 |
| 135 | Hewitt Energy Group Inc | Salt Lake City, UT 84111 | Oil & Gas Operator | Apr 2015 |
| 136 | HG Oil Holdings, LLC | Hoisington, KS 67544 | Oil & Gas Operator | Feb 2026 |
| 137 | Hillenburg Oil C | | Oil Operator | Apr 1994 |
| 138 | HKW Oil Company, Inc. | Bunker Hill, KS 67626 | Oil Operator | Dec 2009 |
| 139 | Hoffman, Myrle F. | Denver, CO 80202 | Oil Operator | Dec 1986 |
| 140 | Holt IVan | | Oil Operator | Mar 1989 |
| 141 | Holt IVan Leroy | | Oil & Gas Operator | Jan 1994 |
| 142 | Hudson Brothers, Inc. | Hutchinson, KS 67501 | Oil & Gas Operator | Jun 2007 |
| 143 | Hupfer Oil & Gas | Hays, KS 67601 | Oil & Gas Operator | Dec 1993 |
| 144 | Hupfer Operating, Inc. | Shawnee, KS 66203 | Oil & Gas Operator | Dec 2019 |
| 145 | Hutchison Jay Oi | | Oil Operator | Sep 1991 |
| 146 | Ia Operating, Inc. | Edmond, OK 73003 | Oil Operator | Feb 2026 |
| 147 | Ivan Holt Well Servicing Inc | Edmond, OK 73003 | Oil Operator | Aug 1999 |
| 148 | J Carter Oil | | Oil Operator | Feb 2026 |
| 149 | J.H. R., Inc. | Bridgeville, PA 15017 | Oil Operator | Jan 2013 |
| 150 | J.H.R. Corporation | Bridgeville, PA 15017 | Oil & Gas Operator | Jul 2001 |
| 151 | J.R. Oil Productions | | Oil Operator | Jul 2019 |
| 152 | Jackson Brothers | | Oil Operator | Dec 1996 |
| 153 | Jason Oil Compan | | Oil Operator | Sep 1992 |
| 154 | Jason Oil Company | | Oil Operator | Dec 2014 |
| 155 | Jason Oil Company, LLC | Russell, KS 67665 | Oil Operator | Feb 2026 |
| 156 | John O. Farmer, Inc. | | Oil & Gas Operator | Dec 1996 |
| 157 | Jones, Cal | Canton, KS 67428 | Oil & Gas Operator | Mar 2002 |
| 158 | JT Enterprises | Gorham, KS 67640 | Oil Operator | Aug 1990 |
| 159 | Kansas Crude Investments LLC | Hays, KS 67601 | Oil Operator | Feb 2026 |
| 160 | Kansas Renewable Resources, LLC | Great Bend, KS 67530 | Oil Operator | Feb 2026 |
| 161 | Karst Don Well S | | Oil Operator | Oct 1990 |
| 162 | Kay Dee Oil | | Oil Operator | Feb 2026 |
| 163 | KG Oil Co | | Oil Operator | Dec 2025 |
| 164 | Kinderhook Oil & | | Oil Operator | Dec 1993 |
| 165 | Klima Well Service, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Feb 2026 |
| 166 | Knighton Oil Company, Inc. | Wichita, KS 67206 | Oil & Gas Operator | Feb 2026 |
| 167 | Koron Investments, Inc. | Hays, KS 67601 | Oil Operator | Feb 2026 |
| 168 | Krier Oil Oper - | | Oil Operator | Sep 1995 |
| 169 | Krier Oil Operation | | Oil Operator | Jan 2026 |
| 170 | Krug, Donald H | Russell, KS 67665 | Oil Operator | Feb 2026 |
| 171 | KSC Oil | | Oil Operator | Feb 2026 |
| 172 | Kytex, Inc. | Wichita, KS 67230 | Oil Operator | Dec 2019 |
| 173 | L. D. Drilling, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Feb 2026 |
| 174 | Ladd Petroleum C | | Oil & Gas Operator | Sep 1989 |
| 175 | Lario Oil & Gas Company | Odessa, TX 79762 | Oil & Gas Operator | Jun 2026 |
| 176 | Larrette Resources | | Oil Operator | Nov 1999 |
| 177 | Larson Operating | | Oil & Gas Operator | Mar 2001 |
| 178 | Larson Operating Company | Olmitz, KS 67564-8561 | Oil & Gas Operator | Dec 2019 |
| 179 | Lasmo Energy Cor | | Oil Operator | Feb 1990 |
| 180 | LB Exploration, Inc. | Wichita, KS 67205 | Oil & Gas Operator | Nov 2025 |
| 181 | Leavell Resource | | Oil Operator | Dec 1993 |
| 182 | Leben Oil Corpor | | Oil & Gas Operator | Apr 1991 |
| 183 | Lee Phillips Oil Company | | Oil Operator | Feb 2026 |
| 184 | Legleiter, Julius A. | Hays, KS 67601 | Oil Operator | Apr 1996 |
| 185 | Leo Michaelis Oil Operator | | Oil Operator | Oct 2002 |
| 186 | Leroy Holt Oil Operations | | Oil Operator | Mar 2010 |
| 187 | Loewen Operator, Inc. | Canton, KS 67428 | Oil & Gas Operator | Nov 2025 |
| 188 | Lone Star Oil Co. | Jacksboro, TX 76458 | Oil & Gas Operator | Feb 2026 |
| 189 | Lorenzen Oil Company, Inc. | O?Fallon, MO 63368 | Oil Operator | Feb 2026 |
| 190 | LRC Development Corporation | Hays, KS 67601 | Oil Operator | Mar 2009 |
| 191 | M & G Oil Company | Marble Falls, TX 78654 | Oil & Gas Operator | Jun 2026 |
| 192 | M & G Oil Inc | Russell, KS 67665 | Oil Operator | Feb 2026 |
| 193 | M.A. Yost Operations, Inc | Russell, KS 67665 | Oil Operator | Jan 2026 |
| 194 | Mad Operators LLC | | Oil & Gas Operator | Feb 2026 |
| 195 | Mai Oil Operations, Inc. | Dallas, TX 75225 | Oil & Gas Operator | Feb 2026 |
| 196 | Mai Operations | | Oil Operator | Dec 1996 |
| 197 | Manning, Gregory | Ellinwood, KS 67526 | Oil Operator | Feb 2026 |
| 198 | Manuel Corporation | Wichita, KS 67206 | Oil & Gas Operator | Mar 2026 |
| 199 | Mar-Lou Oil Co., LLC | Wilson, KS 67490 | Oil Operator | Feb 2026 |
| 200 | Marmac Petroleum | | Oil & Gas Operator | Oct 1994 |