| 101 | Murfin Drilling Company, Inc. | Wichita, KS 67202 | Oil & Gas Operator | Feb 2026 |
| 102 | Mustang Drilling | | Oil & Gas Operator | Nov 1996 |
| 103 | Mustang Energy Corporation | Hays, KS 67601 | Oil Operator | Dec 2025 |
| 104 | MW Oil, Inc | | Oil & Gas Operator | Dec 2025 |
| 105 | New Age Oil LLC | Hays, KS 67601 | Oil & Gas Operator | Dec 2025 |
| 106 | Nixon R P Operat | | Oil Operator | Aug 1995 |
| 107 | Northern Lights Oil Company, LLC | Andover, KS 67002 | Oil & Gas Operator | Dec 2025 |
| 108 | NPF Energy Corporation | Boise, ID 83708 | Oil & Gas Operator | Dec 2025 |
| 109 | Oil Production S | | Oil Operator | Sep 1993 |
| 110 | Oil Property Management Inc | Attica, KS 67009 | Oil & Gas Operator | Feb 2021 |
| 111 | Okmar Oil Compan | | Oil & Gas Operator | Feb 1995 |
| 112 | Oneok Field Services Company | Tulsa, OK 74103 | Oil & Gas Operator | Jan 2026 |
| 113 | Palomino Petroleum Inc | Newton, KS 67114 | Oil & Gas Operator | Dec 2025 |
| 114 | Paramount Enterprises Inc | Hays, KS 67601 | Oil Operator | Aug 2000 |
| 115 | Parrish Corporat | | Oil & Gas Operator | Oct 1994 |
| 116 | Paxco, Inc. | Hays, KS 67601 | Oil & Gas Operator | Dec 2025 |
| 117 | Pendleton Land & | | Oil Operator | Aug 1985 |
| 118 | Phillips Petrole | | Oil & Gas Operator | May 1995 |
| 119 | Philpott Oil & Gas Co Inc | Atwood, KS 67730 | Oil Operator | Aug 2010 |
| 120 | Pickrell Drilling Co., Inc. | Wichita, KS 67213 | Oil & Gas Operator | Dec 2025 |
| 121 | Pintail Petroleu | | Oil & Gas Operator | Dec 1995 |
| 122 | Pintail Petroleum, LTD. | Wichita, KS 67202 | Oil & Gas Operator | Apr 2021 |
| 123 | Popp Operating, Inc. | Hoisington, KS 67544 | Oil Operator | Dec 2025 |
| 124 | Providence Energ | | Oil & Gas Operator | Jul 1988 |
| 125 | R. P. Nixon Operations, Inc | Hays, KS 67601 | Oil Operator | Dec 2025 |
| 126 | Rains & Williams | | Oil & Gas Operator | Nov 1995 |
| 127 | Rains & Williamson Oil Co Inc | Wichita, KS 67277 | Oil & Gas Operator | Dec 2025 |
| 128 | Raney Oil Company | Lawrence, KS 66047 | Oil & Gas Operator | May 1999 |
| 129 | Raymond Oil Co., Inc. | Wichita, KS 67201 | Oil & Gas Operator | Dec 2025 |
| 130 | Raymond Oil Comp | | Oil & Gas Operator | Dec 1996 |
| 131 | Reif Oil Operati | | Oil Operator | Nov 1988 |
| 132 | Richlan Drilling, A General Partnership | Beaver, KS 67525 | Oil & Gas Operator | Dec 2025 |
| 133 | Ritchie Explorat | | Oil & Gas Operator | Dec 1996 |
| 134 | Ritchie Exploration, Inc. | Wichita, KS 67278 | Oil & Gas Operator | Dec 2025 |
| 135 | RJM Company | Claflin, KS 67525 | Oil & Gas Operator | Dec 2025 |
| 136 | Royal Drilling Inc | Russell, KS 67665 | Oil Operator | Dec 2025 |
| 137 | Samuel Gary Jr. & Associates, Inc. | Denver, CO 80202 | Oil & Gas Operator | Dec 2025 |
| 138 | Saxon Oil Company | Dallas, TX 75204 | Oil & Gas Operator | Oct 2009 |
| 139 | Scheck Oil Operation | | Oil & Gas Operator | Dec 2025 |
| 140 | Schlobohm Starr | | Oil Operator | Dec 1996 |
| 141 | Schreiber Oil Co. | | Oil Operator | Dec 2009 |
| 142 | Shaw Robert Lesl | | Oil Operator | Oct 1989 |
| 143 | Shelby Resources LLC | Denver, CO 80207 | Oil & Gas Operator | Dec 2025 |
| 144 | Slawson Donald C | Wichita, KS 67202 | Oil & Gas Operator | Oct 2025 |
| 145 | Southwind Petroleum Corp. | Wichita, KS 67203 | Oil & Gas Operator | Jun 2022 |
| 146 | Special Energy Corp. | Stillwater, OK 74076 | Oil & Gas Operator | Apr 2026 |
| 147 | Spindletop Oil & | | Oil Operator | Jun 1993 |
| 148 | Staab Oil Co., A General Partnership | Hays, KS 67601 | Oil Operator | Dec 2025 |
| 149 | Strabala Joseph | | Oil Operator | Jan 1992 |
| 150 | Summit Operating LLC | Boulder, CO 80301 | Oil & Gas Operator | Jan 2026 |
| 151 | Sunburst Explora | | Oil Operator | May 1990 |
| 152 | T & P Oil & Gas, L.L.C. | Overland Park, KS 66212 | Oil Operator | Dec 2009 |
| 153 | Taos Resources Operating Co LLC | Houston, TX 77037 | Oil & Gas Operator | Dec 2019 |
| 154 | Tengasco, Inc. | Houston, TX 77063 | Oil & Gas Operator | Dec 2025 |
| 155 | Thomas Garner, Inc. | St John, KS 67576 | Oil & Gas Operator | Dec 2025 |
| 156 | Thresher Energy, Inc. | Houston, TX 77060 | Oil & Gas Operator | Apr 2026 |
| 157 | Tomlinson, Sid | Hays, KS 67601 | Oil & Gas Operator | Sep 2002 |
| 158 | Trans Pacific Oi | | Oil & Gas Operator | May 1995 |
| 159 | Trans Pacific Oil Corporation | Wichita, KS 67202 | Oil & Gas Operator | Feb 2026 |
| 160 | Trek Resources, Inc. | Dallas, TX 75207 | Oil & Gas Operator | Apr 2026 |
| 161 | Tri United, Inc | Hays, KS 67601 | Oil Operator | Dec 2025 |
| 162 | Triunited Investors, LLC | Monte Sereno, CA 95030 | Oil Operator | May 2012 |
| 163 | Ummel'S Tank Ser | | Oil Operator | Sep 1994 |
| 164 | Unknown | Houston, TX 77208 | Oil & Gas Operator | Dec 2024 |
| 165 | Vess Oil Corporation | Dallas, TX 75201 | Oil & Gas Operator | Apr 2026 |
| 166 | Vincent Oil Corp | Wichita, KS 67202 | Oil & Gas Operator | Dec 2025 |
| 167 | Vji Natural Resources, Inc. | | Oil & Gas Operator | Dec 2025 |
| 168 | Weigel Oil Company, LLC | Gorham, KS 67640 | Oil Operator | Dec 2025 |
| 169 | White Hawk Oil Company, LLP | Tulsa, OK 74103 | Oil Operator | Dec 2025 |
| 170 | Whitetail Crude Inc | Ness City, KS 67560 | Oil & Gas Operator | Dec 2025 |
| 171 | Woodman & Iannit | | Oil & Gas Operator | Sep 1996 |
| 172 | Zenith Drilling | | Oil & Gas Operator | Aug 1995 |
| 173 | Zenith Drilling Corporation | Wichita, KS 67206 | Oil & Gas Operator | Dec 2025 |
| 174 | Zinszer Oil Co., Inc. | Hays, KS 67601 | Oil Operator | Dec 2019 |