| 101 | Hess, Jerry Operating Co. | Muenster, TX 76252 | Oil & Gas Operator | Apr 2026 |
| 102 | Home-Stake Oil & Gas Company | Plano, TX 75093 | Oil & Gas Operator | Dec 2025 |
| 103 | Javelin Energy Partners Management, LLC | Houston, TX 77002 | Oil & Gas Operator | Apr 2026 |
| 104 | Joint Resources Company | Fort Worth, TX 76107 | Oil & Gas Operator | Apr 2026 |
| 105 | Kelly Resources, LTD. | Frisco, TX 75034 | Oil & Gas Operator | Aug 2004 |
| 106 | Kemper Operating Co. | Abilene, TX 79605 | Oil & Gas Operator | Nov 2015 |
| 107 | Klabzuba Royalty Company | Prague, OK 74864-0567 | Oil & Gas Operator | Dec 2019 |
| 108 | Kuhn Oil Co Inc | Timber Lake, SD 57656 | Oil Operator | Dec 2024 |
| 109 | Legend Natural Gas IV, LP | Houston, TX 77094 | Oil & Gas Operator | Feb 2015 |
| 110 | Mark L Shidler Inc | Houston, TX 77055 | Oil & Gas Operator | Feb 2026 |
| 111 | Meeker, Dan Management, Inc. | Fort Worth, TX 76107 | Oil & Gas Operator | Aug 2007 |
| 112 | Mereken Energy Corp. | Fort Worth, TX 76102 | Gas Operator | Feb 2006 |
| 113 | Merrion Oil & Gas Corp | Farmington, NM 87401 | Oil & Gas Operator | Feb 2026 |
| 114 | Metroplex Barnett Shale LLC | Houston, TX 77001 | Gas Operator | Sep 2008 |
| 115 | Mexco Energy Corporation | Midland, TX 79702 | Oil & Gas Operator | Feb 2020 |
| 116 | Mitchell Energy Company L.P. | Spring, TX 77387 | Oil & Gas Operator | Mar 2008 |
| 117 | Mitchell Energy Corp | Houston, TX 77002 | Oil & Gas Operator | Aug 2013 |
| 118 | Moncrief W A Jr | Fort Worth, TX 76102 | Oil & Gas Operator | Jan 2026 |
| 119 | Murphy Oil USA, Inc. | New Orleans, LA 70161 | Oil & Gas Operator | Jan 1993 |
| 120 | Newark E&P Operating, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Jun 2017 |
| 121 | Newark Energy LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2011 |
| 122 | North Country Energy LLC | Amarillo, TX 79159 | Oil & Gas Operator | Apr 2026 |
| 123 | North Texas Llano Operating Corp | Dallas, TX 75225 | Oil & Gas Operator | Apr 2026 |
| 124 | O.G.P. Operating, Inc. | Dallas, TX 75231 | Oil & Gas Operator | Apr 2026 |
| 125 | Oak Hills Drilling & Oper., LLC | Holdenville, OK 74848 | Oil & Gas Operator | May 2013 |
| 126 | Okie Crude Company | Tulsa, OK 74103 | Oil & Gas Operator | Jan 2026 |
| 127 | Ops Group Limited | Houston, TX 77060 | Oil & Gas Operator | Jun 2014 |
| 128 | Owl Creek Operating Co., Inc. | Denver, CO 80206 | Oil & Gas Operator | Apr 2026 |
| 129 | Owl Creek Production Co., Inc. | Houston, TX 77027 | Oil & Gas Operator | Apr 2006 |
| 130 | Palo Petroleum, Inc. | Dallas, TX 75360 | Oil & Gas Operator | Apr 2026 |
| 131 | Paradis Investments, L.L.C. | Bellaire, TX 77401 | Oil Operator | Jun 2020 |
| 132 | Parallel Petroleum Corporation | Midland, TX 79702 | Oil & Gas Operator | Jan 2010 |
| 133 | Parker Hannifin Corporation | Ravenna, OH 44266 | Oil & Gas Operator | Dec 2024 |
| 134 | Phillips, Bob | Weatherford, TX 76086 | Oil & Gas Operator | Nov 2019 |
| 135 | Plains Production Inc | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 1995 |
| 136 | Plover Production Company | Fort Worth, TX 76109 | Oil & Gas Operator | Jul 2006 |
| 137 | Premier Minerals, Inc. | San Antonio, TX 78209 | Oil & Gas Operator | Apr 2026 |
| 138 | Premier Natural Resources II,LLC | Tulsa, OK 74105 | Oil & Gas Operator | Feb 2015 |
| 139 | Premier Oil & Gas LLC | Blanchard, OK 73010-2010 | Oil Operator | Dec 2022 |
| 140 | Proline Energy Resources Inc | Sugar Land, TX 77479 | Oil & Gas Operator | Apr 2026 |
| 141 | Proven Reserves Management, Inc. | Dallas, TX 75370 | Oil & Gas Operator | Jan 2026 |
| 142 | Quicksilver Resources Inc | Fort Worth, TX 76102 | Oil & Gas Operator | Mar 2018 |
| 143 | Radius Operating, LLC | Round Rock, TX 78664 | Oil & Gas Operator | Apr 2026 |
| 144 | Rainbow Energy Corporation | Midland, TX 79701 | Oil & Gas Operator | Nov 2002 |
| 145 | Range Production Company | Fort Worth, TX 76102 | Oil & Gas Operator | Sep 2021 |
| 146 | Range Production Company, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Feb 2026 |
| 147 | Reichmann Petroleum Corp. | Grapevine, TX 76051 | Oil & Gas Operator | Apr 2026 |
| 148 | Republic Energy Inc. | Decatur, TX 76234 | Oil & Gas Operator | Dec 2016 |
| 149 | Richey, Ray Management Co., Inc. | Fort Worth, TX 76108 | Oil & Gas Operator | Apr 2026 |
| 150 | RLB Investments LLC | Holdenville, OK 74848-9421 | Oil Operator | Jul 2017 |
| 151 | Roberts & Hammack, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Apr 2026 |
| 152 | Roca Resource Company, Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 153 | Routh Operating, LLC | Dallas, TX 75204 | Oil & Gas Operator | Mar 2011 |
| 154 | Ryder Scott Oil Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Dec 2005 |
| 155 | Sage Natural Resources LLC | Tulsa, OK 74170 | Oil & Gas Operator | Apr 2026 |
| 156 | Sbog, LLC | Granbury, TX 76048 | Oil & Gas Operator | Feb 2021 |
| 157 | Schmid Properties, Inc. | Hico, TX 76457 | Oil & Gas Operator | Apr 2026 |
| 158 | Sheets Exploration Co., Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Jul 2016 |
| 159 | Slate Holdings, Inc. | Mineral Wells, TX 76068 | Oil & Gas Operator | Apr 2026 |
| 160 | Snow Operating Co., Inc. | Haltom City, TX 76117 | Oil & Gas Operator | Feb 2024 |
| 161 | Southeastern Resources Corp. | Mansfield, TX 76063 | Oil & Gas Operator | Feb 2004 |
| 162 | Spindletop Drilling Co. | Dallas, TX 75230 | Oil & Gas Operator | Apr 2026 |
| 163 | Spindletop Oil & Gas Co. | Dallas, TX 75230 | Oil & Gas Operator | Apr 2026 |
| 164 | Star Energy Inc | Dayton, PA 16222-4325 | Oil & Gas Operator | Dec 2025 |
| 165 | Star Of Texas Energy SRVS, Inc. | Austin, TX 78702 | Oil & Gas Operator | Apr 2026 |
| 166 | Stroube Energy Corporation | Dallas, TX 75248 | Oil & Gas Operator | Jan 2012 |
| 167 | Stroud Energy, LTD. | Fort Worth, TX 76102 | Oil & Gas Operator | Jun 2006 |
| 168 | Sullivan, Hollis R. Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Feb 2009 |
| 169 | Swan PC, LP | Jacksboro, TX 76458 | Oil & Gas Operator | Apr 2026 |
| 170 | Talon Oil & Gas LLC | Dallas, TX 75243 | Oil & Gas Operator | Dec 2010 |
| 171 | Tanglewood Oil & Gas LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Oct 2017 |
| 172 | TC Oil And Gas, LLC | Denton, TX 76205 | Oil Operator | Apr 2026 |
| 173 | TDC Engineering, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Apr 2026 |
| 174 | Tejas Western Corp. | Granbury, TX 76048 | Oil & Gas Operator | Jul 2018 |
| 175 | Tep Barnett USA, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2026 |
| 176 | Terrapin Energy LLC | Okmulgee, OK 74447 | Oil Operator | Feb 2026 |
| 177 | Texas International Oper., LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2013 |
| 178 | Threshold Development Company | Fort Worth, TX 76109 | Oil & Gas Operator | Aug 2016 |
| 179 | Titan Operating, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Jun 2012 |
| 180 | Torch Operating LLC | Fort Worth, TX 76135 | Oil & Gas Operator | Oct 2020 |
| 181 | Total E&P USA, Inc. | Houston, TX 77210 | Oil & Gas Operator | May 2025 |
| 182 | Trinity River Energy Oper, LLC | Houston, TX 77008 | Oil & Gas Operator | May 2018 |
| 183 | Trio Consulting & Management,LLC | Wichita Falls, TX 76307 | Oil & Gas Operator | Apr 2026 |
| 184 | Triple "S" Resources Inc | Sapulpa, OK 74066 | Oil & Gas Operator | Jun 1995 |
| 185 | Upp Operating, LLC | Houston, TX 77002 | Oil & Gas Operator | Apr 2026 |
| 186 | Vantage Fort Worth Energy LLC | Pittsburgh, PA 15222 | Oil & Gas Operator | Apr 2026 |
| 187 | Vargas Energy, LTD. | Fort Worth, TX 76109 | Gas Operator | Apr 2026 |
| 188 | Venado Operating Company LLC | Austin, TX 78738 | Oil & Gas Operator | Mar 2022 |
| 189 | Victory Eagle Utility SV Y, Inc. | Newark, TX 76071 | Gas Operator | Apr 2026 |
| 190 | Wagner Energy LLC | Enid, OK 73701 | Oil Operator | Dec 2025 |
| 191 | Walsh & Watts Inc | Aledo, TX 76008 | Oil & Gas Operator | Apr 2026 |
| 192 | Walsh, F H Jr. Operating Co. Inc | Fort Worth, TX 76102 | Oil & Gas Operator | Oct 2019 |
| 193 | WCWB Energy, LLC | Midland, TX 79701 | Oil Operator | Sep 2015 |
| 194 | Wes-Tex Drilling Company | Abilene, TX 79604 | Oil & Gas Operator | Jan 2000 |
| 195 | Western Chief Oil & Gas Company | Graham, TX 76450 | Oil & Gas Operator | Jul 2009 |
| 196 | Western Chief Operating, L.L.C. | Graham, TX 76450 | Oil & Gas Operator | Apr 2026 |
| 197 | Western Production Company | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2026 |
| 198 | Williams Prod. Gulf Coast, L.P. | Benbrook, TX 76126 | Oil & Gas Operator | Jan 2012 |
| 199 | Willowbend Investments, Inc. | Wichita Falls, TX 76307 | Oil & Gas Operator | Apr 2026 |
| 200 | Winchester Production Company | Shreveport, LA 71129 | Oil & Gas Operator | Nov 2008 |