| 101 | Larson Operating Company | Olmitz, KS 67564-8561 | Oil & Gas Operator | Dec 2019 |
| 102 | Leith Operations | | Oil Operator | Jul 1989 |
| 103 | Liberty Enterpri | | Oil Operator | Jan 1987 |
| 104 | M & G Oil Inc | Russell, KS 67665 | Oil Operator | Dec 2025 |
| 105 | Mad Operators LLC | | Oil & Gas Operator | Dec 2025 |
| 106 | Mai Oil Operations, Inc. | Dallas, TX 75225 | Oil & Gas Operator | Dec 2025 |
| 107 | Marlin Oil Corporation | Oklahoma City, OK 73113 | Oil & Gas Operator | Feb 2026 |
| 108 | McCoy Petroleum Corporation | Wichita, KS 67207 | Oil & Gas Operator | Feb 2026 |
| 109 | Mica Energy Corp | Lincoln, NE 68516 | Oil & Gas Operator | Dec 2010 |
| 110 | Mid Continent Resources, Inc. | Houston, TX 77060 | Oil & Gas Operator | Apr 2026 |
| 111 | Mid-Continent Energy Operating Company | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2026 |
| 112 | Midco Exploration, Inc. | Westmont, IL 60559 | Oil & Gas Operator | Dec 2025 |
| 113 | Mike Kelso Oil, Inc. | Chase, KS 67524 | Oil & Gas Operator | Dec 2025 |
| 114 | Mull Drilling Company | Wichita, KS 67206 | Oil & Gas Operator | Jan 2026 |
| 115 | Murfin Drilling | | Oil & Gas Operator | Jul 1997 |
| 116 | Murfin Drilling Company, Inc. | Wichita, KS 67202 | Oil & Gas Operator | Feb 2026 |
| 117 | Nae, Inc. | Kerrville, TX 78028 | Oil Operator | Oct 2025 |
| 118 | National Petrole | | Oil & Gas Operator | Dec 1996 |
| 119 | New Age Oil LLC | Hays, KS 67601 | Oil & Gas Operator | Dec 2025 |
| 120 | Norstar Petroleum Inc | Englewood, CO 80112 | Oil & Gas Operator | Dec 2025 |
| 121 | Northern Lights | | Oil & Gas Operator | Apr 1993 |
| 122 | Northern Lights Oil Company, LLC | Andover, KS 67002 | Oil & Gas Operator | Dec 2025 |
| 123 | O'Brien Energy Company | Shreveport, LA 71136 | Oil & Gas Operator | Sep 2019 |
| 124 | O'Brien Resources LLC | Shreveport, LA 71136 | Oil Operator | Nov 2017 |
| 125 | Oil Producers, Inc. Of Kansas | Wichita, KS 67206 | Oil & Gas Operator | Apr 2026 |
| 126 | Oxford Explorati | | Oil & Gas Operator | Mar 1993 |
| 127 | Palomino Petrole | | Oil & Gas Operator | Dec 1995 |
| 128 | Palomino Petroleum | Newton, KS 67114 | Oil Operator | Oct 2003 |
| 129 | Palomino Petroleum Inc | Newton, KS 67114 | Oil & Gas Operator | Dec 2025 |
| 130 | Paradise Creek Oil & Gas | Plainville, KS 67663 | Oil Operator | Dec 2025 |
| 131 | Petroleum Proper | | Oil & Gas Operator | Nov 1995 |
| 132 | Petroleum Property Services, Inc. | Wichita, KS 67202 | Oil & Gas Operator | Dec 2025 |
| 133 | Petropro Petroleum LLC | | Oil Operator | Dec 2025 |
| 134 | Petx Petroleum C | | Oil Operator | Nov 1993 |
| 135 | Pickrell Drilling Co., Inc. | Wichita, KS 67213 | Oil & Gas Operator | Dec 2025 |
| 136 | Pintail Petroleum, LTD. | Wichita, KS 67202 | Oil & Gas Operator | Apr 2021 |
| 137 | Pinto Petroleum | Wichita, KS 67211 | Oil Operator | Nov 2001 |
| 138 | Quest Energy LLC | Salina, KS 67401 | Oil Operator | Dec 2025 |
| 139 | Raymond Oil Co., Inc. | Wichita, KS 67201 | Oil & Gas Operator | Dec 2025 |
| 140 | Renegade Resources Corp. | Reno, NV 89511 | Oil & Gas Operator | Jul 2024 |
| 141 | Rheem Resources Inc | Wichita, KS 67220 | Oil Operator | Aug 1998 |
| 142 | Richlan Drilling, A General Partnership | Beaver, KS 67525 | Oil & Gas Operator | Dec 2025 |
| 143 | Ritchie Explorat | | Oil & Gas Operator | Dec 1996 |
| 144 | Ritchie Exploration, Inc. | Wichita, KS 67278 | Oil & Gas Operator | Dec 2025 |
| 145 | Ritchie, A. Scott | Wichita, KS 67202 | Oil Operator | Mar 1988 |
| 146 | Rockwood Petrole | | Oil Operator | Aug 1985 |
| 147 | Royal Petroleum | Baytown, TX 77521 | Oil & Gas Operator | Aug 2003 |
| 148 | Sabre Exploratio | | Oil Operator | Oct 1988 |
| 149 | Schmitt Carmen I | | Oil Operator | Dec 1996 |
| 150 | Sedona Oil & Gas Corporation | Dallas, TX 75231 | Oil & Gas Operator | Apr 2026 |
| 151 | Shakespeare Oil Co Inc | Salem, IL 62881 | Oil & Gas Operator | Jan 2026 |
| 152 | Slawson Donald C | Wichita, KS 67202 | Oil & Gas Operator | Oct 2025 |
| 153 | Slawson Explorat | | Oil & Gas Operator | Dec 1996 |
| 154 | Slawson Exploration Company Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Apr 2026 |
| 155 | Standard Operating Company | Wichita, KS 67205 | Oil & Gas Operator | Dec 2019 |
| 156 | Stelbar Oil Corporation, Inc. | Wichita, KS 67206 | Oil & Gas Operator | Dec 2025 |
| 157 | Strabala Joseph | | Oil Operator | Jan 1992 |
| 158 | Stromquist C Dal | | Oil & Gas Operator | Aug 1991 |
| 159 | Talon Group LLC | Hays, KS 67601 | Oil Operator | Dec 2025 |
| 160 | Texkan Exploration LLC | Plainville, KS 67663 | Oil Operator | Dec 2019 |
| 161 | Texkan Resources, LLC | Odessa, TX 79765 | Oil & Gas Operator | Jun 2025 |
| 162 | Thunderbird Dril | | Oil & Gas Operator | Nov 1995 |
| 163 | Thunderbird Drilling, Inc. | Wichita, KS 67207 | Oil Operator | Oct 2008 |
| 164 | Trans Pacific Oil Corporation | Wichita, KS 67202 | Oil & Gas Operator | Feb 2026 |
| 165 | Trek Aec, LLC | Wichita, KS 67202 | Oil & Gas Operator | Dec 2025 |
| 166 | Tyco Oil Co. | | Oil Operator | Oct 2025 |
| 167 | Unknown | Houston, TX 77208 | Oil & Gas Operator | Dec 2024 |
| 168 | Urban Oil & Gas Group, LLC | Plano, TX 75074 | Oil & Gas Operator | Apr 2026 |
| 169 | Veenker Resources Inc | Oklahoma City, OK 73113 | Oil & Gas Operator | Feb 2026 |
| 170 | Vess Oil Corporation | Dallas, TX 75201 | Oil & Gas Operator | Apr 2026 |
| 171 | Viking Resources | | Oil & Gas Operator | Sep 1995 |
| 172 | Viking Resources, Inc. | Stafford, TX 77477 | Oil & Gas Operator | Apr 2026 |
| 173 | Vintage Petroleu | | Oil & Gas Operator | Dec 1995 |
| 174 | Voyager Petroleu | | Oil & Gas Operator | Dec 1986 |
| 175 | Wabash Energy Corporation | Lawrenceville, IL 62439 | Oil & Gas Operator | Dec 2009 |
| 176 | Walker Tank Service, Inc | Utica, KS 67584 | Oil Operator | Oct 2025 |
| 177 | Weigel Oil Company, LLC | Gorham, KS 67640 | Oil Operator | Dec 2025 |
| 178 | White & Ellis DR | | Oil & Gas Operator | Aug 1995 |
| 179 | White & Ellis Drilling, Inc. | Wichita, KS 67206 | Oil & Gas Operator | Dec 2025 |
| 180 | White Rock Oil LLC | De Soto, KS 66018 | Oil Operator | May 2012 |
| 181 | Whitetail Crude | | Oil Operator | Nov 1996 |
| 182 | Whitetail Crude Inc | Ness City, KS 67560 | Oil & Gas Operator | Dec 2025 |
| 183 | Wilton Petroleum, Inc. | Canton, KS 67428 | Oil & Gas Operator | Dec 2025 |
| 184 | Wineland Oil - LLC | Hays, KS 67601 | Oil Operator | Dec 2025 |
| 185 | WM KS Energy Resources LLC | Shreveport, LA 71101 | Oil & Gas Operator | Nov 2019 |