| 101 | Leis Oil Services, LLC | Yates Center, KS 66783 | Oil Operator | Jul 2023 |
| 102 | Leis, John E. | Yates Center, KS 66783 | Oil Operator | Dec 2025 |
| 103 | Leis, Ryan M. | Scottsdale, AZ 85258 | Oil & Gas Operator | Dec 2009 |
| 104 | Leis, Steven A. | Yates Center, KS 66783 | Oil Operator | Dec 2025 |
| 105 | Leis, VIctor J. | Paola, KS 66071 | Oil & Gas Operator | Dec 2025 |
| 106 | Lincoln 77 Inc | Chanute, KS 66720 | Oil Operator | Dec 2001 |
| 107 | Little Joe'S Oil Company | | Oil Operator | Jul 2020 |
| 108 | M & M Contractin | | Oil Operator | Mar 1992 |
| 109 | Mark Oil, Inc. | Chanute, KS 66720 | Oil Operator | Feb 2025 |
| 110 | Marshall Lew L O | | Oil Operator | Jun 1994 |
| 111 | Marshall Oil LLC | Eureka, KS 67045 | Oil Operator | Dec 2025 |
| 112 | McClure M C Oil | | Oil Operator | Jul 1984 |
| 113 | McFadden Oil Co. | | Oil Operator | Dec 2025 |
| 114 | Mears, John C. | Chanute, KS 66720 | Oil Operator | Dec 2017 |
| 115 | Mid America Ener | | Oil Operator | Nov 1993 |
| 116 | Midwestern Oil C | | Oil & Gas Operator | May 1995 |
| 117 | Miller Bros Oil Company, Inc. | Burlington, KS 66839 | Oil Operator | Dec 2009 |
| 118 | Mitchell Wyatt B | | Oil Operator | Aug 1993 |
| 119 | Miura Petroleum | | Oil Operator | Dec 1992 |
| 120 | Monarch Energy LLC | Paola, KS 66071 | Oil Operator | Dec 2025 |
| 121 | Morrison, Mark L. | Yates Center, KS 66783 | Oil Operator | Dec 2025 |
| 122 | N & B Enterprise | | Oil Operator | Nov 1994 |
| 123 | N-A Energy LLC | Arvada, CO 80005 | Oil Operator | Dec 2025 |
| 124 | Nadel & Gussman | Tulsa, OK 74103 | Oil & Gas Operator | May 2007 |
| 125 | Newland Oil Comp | | Oil Operator | Sep 1996 |
| 126 | Nordmeyer Oil, Inc. | Toronto, KS 66777 | Oil Operator | Dec 2019 |
| 127 | Norstar Petroleum Inc | Englewood, CO 80112 | Oil & Gas Operator | Dec 2025 |
| 128 | Oil Drillers & D | | Oil & Gas Operator | Feb 1992 |
| 129 | Oklahoma Energy & Exploration, Inc. | Tulsa, OK 74114 | Oil Operator | Jan 1996 |
| 130 | Onnen, Gerhard E. | Yates Center, KS 66783 | Oil Operator | Feb 2002 |
| 131 | Owens Oil Company, LLC | Yates Center, KS 66783 | Oil Operator | Dec 2025 |
| 132 | Owens Petroleum | | Oil Operator | May 2006 |
| 133 | Owens Petroleum LLC | Yates Center, KS 66783 | Oil & Gas Operator | Dec 2025 |
| 134 | Pancanadian Petr | | Oil Operator | Aug 1990 |
| 135 | Patrick Development Corporation | Leawood, KS 66206 | Oil Operator | Dec 2025 |
| 136 | Patriot Oil Company, LLC | | Oil Operator | Nov 2025 |
| 137 | Peewe Oil Co. | | Oil Operator | Dec 2025 |
| 138 | Petrik Oil - Jim | | Oil Operator | Apr 1995 |
| 139 | Piqua Petro, Inc. | Piqua, KS 66761 | Oil Operator | Dec 2025 |
| 140 | Piqua Petroleum | | Oil Operator | Dec 1996 |
| 141 | Postrock Midcontinent Production LLC | Oklahoma City, OK 73101 | Oil & Gas Operator | Jan 2026 |
| 142 | Prairie Oil, LLC | Louisburg, KS 66053 | Oil Operator | Nov 2025 |
| 143 | Prospective Inv. & Trading Co., LTD., The | Tulsa, OK 74170 | Oil Operator | Dec 2019 |
| 144 | Pup Oil Company | | Oil Operator | Dec 1996 |
| 145 | Quest Cherokee LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | Dec 2025 |
| 146 | Quest Energy LLC | Salina, KS 67401 | Oil Operator | Dec 2025 |
| 147 | Quest Energy Service Inc. | Chanute, KS 66720 | Oil & Gas Operator | Jan 2009 |
| 148 | R - J Enterprises | Farmington, NM 874990051 | Oil Operator | Mar 2021 |
| 149 | R F Oil | | Oil & Gas Operator | Oct 1992 |
| 150 | R. P. Nixon Operations, Inc | Hays, KS 67601 | Oil Operator | Dec 2025 |
| 151 | R.E.French Oil Company, L.L.C. | Gridley, KS 66852 | Oil Operator | Nov 1999 |
| 152 | Red Cloud Exploration Operating LLC | Calabasas, CA 91302 | Oil Operator | Feb 2016 |
| 153 | Reese Exploratio | | Oil & Gas Operator | Mar 1995 |
| 154 | RH Capital-Beets, LLC | Jefferson City, MO 65101 | Oil Operator | Dec 2025 |
| 155 | Rig 6 Drilling Co., Inc. | Bronson, KS 66716 | Oil Operator | Oct 2019 |
| 156 | River Rock Operating LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | Dec 2025 |
| 157 | RJ Energy, LLC | Garnett, KS 66032 | Oil Operator | Dec 2025 |
| 158 | Robison, L. E. Oil | Yates Center, KS 66783 | Oil Operator | Sep 2001 |
| 159 | Rodriguez, Everado | Paola, KS 66071 | Oil Operator | Mar 2021 |
| 160 | Ron-Bob Oil LLC | Neosho Falls, KS 66758 | Oil Operator | Dec 2025 |
| 161 | Russell James E | | Oil Operator | Apr 1994 |
| 162 | S & S Oil Company | Electra, TX 76360 | Oil & Gas Operator | Apr 2026 |
| 163 | Sage, Larry George | Virgil, KS 66870 | Oil Operator | Dec 2019 |
| 164 | Sandefer Larry | | Oil Operator | Aug 1993 |
| 165 | Schankie & Sons, LLC | Madison, KS 66860 | Oil Operator | Dec 2025 |
| 166 | Ses Oil | | Oil Operator | Jun 2004 |
| 167 | Seymour Oil Co Inc | Edmond, OK 73025 | Oil & Gas Operator | Jul 2011 |
| 168 | Shade Tree Oil C | | Oil Operator | Oct 1987 |
| 169 | Sheedy Energy Production Company | | Oil Operator | Dec 2025 |
| 170 | Smith Oil Co. | Smackover, AR 71762 | Oil Operator | Jan 2025 |
| 171 | Smith Oil Compan | | Oil Operator | Sep 1994 |
| 172 | Sowle Exploratio | | Oil Operator | Aug 1986 |
| 173 | Specht Farms | Piqua, KS 66761 | Oil Operator | Nov 2009 |
| 174 | Specht Oil | Iola, KS 66749 | Oil Operator | Mar 1998 |
| 175 | Splechter, Tim | Yates Center, KS 66783 | Oil Operator | Dec 2025 |
| 176 | Steinforth, Loren | Yates Center, KS 66783 | Oil Operator | Sep 2014 |
| 177 | Steinle Oil | | Oil Operator | Aug 2021 |
| 178 | Sujen Enterprise | | Oil Operator | Sep 1989 |
| 179 | Sunrise Oil Corp | | Oil Operator | Mar 1992 |
| 180 | T.J. Oil | | Oil Operator | Dec 2025 |
| 181 | Talley Resources | | Oil Operator | Jun 1994 |
| 182 | Teko Oil & Gas I | | Oil Operator | Aug 1992 |
| 183 | Tesoro Petroleum | | Oil Operator | Mar 1982 |
| 184 | Tidd, Frankie | Neosho Falls, KS 66758 | Oil Operator | Nov 1996 |
| 185 | Tidd, Gary D. | Piqua, KS 66761 | Oil Operator | May 2016 |
| 186 | Trimble & Maclaskey Oil LLC | Gridley, KS 66852 | Oil Operator | Dec 2025 |
| 187 | Trimble, IVal L. | Gridley, KS 66852 | Oil Operator | Dec 2019 |
| 188 | Triple B Crude, LLC | Colony, KS 66015 | Oil Operator | Nov 2025 |
| 189 | Triple C Petroleum LLC | Colony, KS 66015 | Oil Operator | Nov 2019 |
| 190 | Unknown | Houston, TX 77208 | Oil & Gas Operator | Dec 2024 |
| 191 | Upland Resources | | Oil Operator | Jul 1983 |
| 192 | Vanderman Oil | Neosho Falls, KS 66758 | Oil Operator | Feb 2006 |
| 193 | Veenker Resources Inc | Oklahoma City, OK 73113 | Oil & Gas Operator | Feb 2026 |
| 194 | Verde Oil Company | San Antonio, TX 78209 | Oil & Gas Operator | Dec 2025 |
| 195 | Viva International, Inc. | Overland Park, KS 66207 | Oil Operator | Jun 2023 |
| 196 | W4 Energy, LLC | Humboldt, KS 66748 | Gas Operator | Nov 2015 |
| 197 | Wells Oil, LLC | Gridley, KS 66852 | Oil Operator | Dec 2025 |
| 198 | White Gas & Oil | Mesa, AZ 85210 | Oil Operator | Oct 2006 |
| 199 | Willis Energy | Neodesha, KS 66757 | Oil & Gas Operator | Dec 2009 |
| 200 | Xenex Incorporat | | Oil Operator | Mar 1991 |