| 101 | Hep Oil GP, LLC | Gainesville, TX 76241 | Oil & Gas Operator | Mar 2015 |
| 102 | Herring, Ray | Graham, TX 76450 | Oil & Gas Operator | Jul 2014 |
| 103 | Hess, Jerry Operating Co. | Muenster, TX 76252 | Oil & Gas Operator | Feb 2026 |
| 104 | Heydrick Petroleum Company | Wichita Falls, TX 76308 | Oil & Gas Operator | Feb 2026 |
| 105 | Hindman, E. C. Jr. Partnership | Breckenridge, TX 76424 | Oil & Gas Operator | Dec 2008 |
| 106 | Hood, J. F. | Holliday, TX 76366 | Oil & Gas Operator | Apr 2010 |
| 107 | Hood, J. Frank, Jr. | Arlington, TX 76006 | Oil & Gas Operator | Feb 2026 |
| 108 | Hughes & Shawver | Olney, TX 76374 | Oil & Gas Operator | Aug 1996 |
| 109 | Hughes, Bill Drilling, Inc. | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 110 | J & J Trading | Abilene, TX 79608 | Oil & Gas Operator | Dec 2004 |
| 111 | J.A.G. Oil & Gas | La Vernia, TX 78121 | Oil & Gas Operator | Feb 2026 |
| 112 | JDL Operating, LLC | Holliday, TX 76366 | Oil & Gas Operator | Feb 2026 |
| 113 | Johnson, William D. | Fort Worth, TX 76116 | Oil & Gas Operator | Mar 2008 |
| 114 | Joint Resources Company | Fort Worth, TX 76107 | Oil & Gas Operator | Feb 2026 |
| 115 | Journey Operating LLC | Sugar Land, TX 77496 | Oil & Gas Operator | Aug 2006 |
| 116 | Just Oil & Gas, Inc. | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 117 | K. D. Operating LLC. | Wichita Falls, TX 76308 | Oil Operator | Feb 2026 |
| 118 | Kimleco Petroleum, Inc. | Wichita Falls, TX 76301 | Oil & Gas Operator | Feb 2026 |
| 119 | Kinder Morgan Production Co LP | Midland, TX 79701 | Oil & Gas Operator | Jul 2007 |
| 120 | Kintex Petroleum Company | Wichita Falls, TX 76308 | Oil & Gas Operator | Feb 2026 |
| 121 | Knobloch, Albert | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 122 | Kramer Operating, LLC | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 123 | KTC Oil Enterprises, LLC | Dallas, TX 75247 | Oil & Gas Operator | Feb 2026 |
| 124 | L.C.S. Production Company | Abilene, TX 79608 | Oil & Gas Operator | Feb 2026 |
| 125 | Legacy Reserves Operating LP | Denver, CO 80201 | Oil & Gas Operator | Feb 2026 |
| 126 | Lindemann, James D. | Holliday, TX 76366 | Oil & Gas Operator | Mar 2008 |
| 127 | Lindemann, W. L., DRLG. Co. | Wichita Falls, TX 76308 | Oil & Gas Operator | Jun 1994 |
| 128 | Livingston, David Oil Company | Haskell, TX 79521 | Oil & Gas Operator | Aug 2003 |
| 129 | LMH Energy | Wichita Falls, TX 76302 | Oil & Gas Operator | Feb 2026 |
| 130 | Lofton, W. A. | Wichita Falls, TX 76301 | Oil & Gas Operator | Jun 1998 |
| 131 | Lucas Energy, Inc. | Houston, TX 77067 | Oil & Gas Operator | Feb 2017 |
| 132 | Lufkin Production Company Inc. | Jacksboro, TX 76458 | Oil & Gas Operator | Feb 2026 |
| 133 | Lyon Operating Company Inc.(Iii) | Jacksboro, TX 76458 | Oil & Gas Operator | Feb 2026 |
| 134 | M5 Standing Energy, LLC | Decatur, TX 76234 | Oil & Gas Operator | Feb 2026 |
| 135 | Marshall & Winston, Inc. | Midland, TX 79710 | Oil & Gas Operator | Dec 2025 |
| 136 | Martin Petroleum Corp. | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 137 | Martin Well Service | Graham, TX 76450 | Oil & Gas Operator | Jun 2015 |
| 138 | Mash Oilfield Services, LP | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 139 | Mayfield Engineering Service | Tulsa, OK 74104 | Oil & Gas Operator | Feb 2026 |
| 140 | McMahon-Bullington Drilling Co. | Wichita Falls, TX 76307 | Oil & Gas Operator | Mar 1996 |
| 141 | Memorial Production Operating LLC | Houston, TX 77002 | Oil & Gas Operator | Feb 2026 |
| 142 | Mercury Exploration Co. | Fort Worth, TX 76104 | Oil & Gas Operator | Dec 2006 |
| 143 | Mercury Operating, LLC | Dallas, TX 75208 | Oil & Gas Operator | Feb 2026 |
| 144 | Merit Energy Company | Dallas, TX 75240 | Oil & Gas Operator | Feb 2026 |
| 145 | Metano Energy III, LP | Tulsa, OK 74121 | Oil & Gas Operator | Feb 2026 |
| 146 | Midwestern Energy | Mankato, MN 56003 | Oil & Gas Operator | Feb 2026 |
| 147 | Millennium Operating Company | Houston, TX 77057 | Oil & Gas Operator | Feb 2026 |
| 148 | Mitchell Energy Corp | Houston, TX 77002 | Oil & Gas Operator | Aug 2013 |
| 149 | MJM Oil & Gas, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Aug 2003 |
| 150 | Mobil Petro Vac, Inc. | Duncan, OK 73533 | Oil & Gas Operator | Feb 2026 |
| 151 | Morrow, Anthony | Albany, TX 76430 | Oil & Gas Operator | Feb 2026 |
| 152 | Mosaic Oil LLC | Dallas, TX 75205 | Oil & Gas Operator | Feb 2026 |
| 153 | Mosaic Texas LLC | Dallas, TX 75205 | Oil & Gas Operator | Feb 2026 |
| 154 | Myers, James B. | Olney, TX 76374 | Oil & Gas Operator | Feb 2026 |
| 155 | Nance Engineering Inc. | Houston, TX 77058 | Oil & Gas Operator | Mar 2002 |
| 156 | Newpek, LLC | Irving, TX 75039 | Oil & Gas Operator | Sep 2016 |
| 157 | Nielson & Associates, Inc | Cody, WY 82414 | Oil & Gas Operator | Feb 2016 |
| 158 | North Texas Plugging, LLC | Denton, TX 76205 | Oil & Gas Operator | Feb 2026 |
| 159 | O'Neal Operating Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Dec 1999 |
| 160 | Osceola Oil & Gas Corporation | Somerset, TX 78069 | Oil & Gas Operator | Aug 1994 |
| 161 | Ouida Oil | Rowlett, TX 75030 | Oil & Gas Operator | Mar 2008 |
| 162 | Palmer Tank Trucks, Inc. | Olney, TX 76374 | Oil & Gas Operator | Mar 2008 |
| 163 | Panamerican Operating Inc | Dallas, TX 75219 | Oil & Gas Operator | Feb 2026 |
| 164 | Pantera Energy Company | Amarillo, TX 79101 | Oil & Gas Operator | Feb 2026 |
| 165 | Parnell Operating | Kamay, TX 76369 | Oil & Gas Operator | Feb 2026 |
| 166 | Paschal Petroleum, Inc. | Dallas, TX 75380 | Oil & Gas Operator | Apr 1994 |
| 167 | Patton, E. N. Oil Company, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Feb 2026 |
| 168 | Pendragon Oil Co. | Fort Worth, TX 76116 | Oil & Gas Operator | Feb 2026 |
| 169 | Petex | Breckenridge, TX 76424 | Oil & Gas Operator | Feb 2026 |
| 170 | Petroleum Capital, L.C. | Dallas, TX 75367 | Oil & Gas Operator | Feb 2026 |
| 171 | Polaris Production Corp. | Midland, TX 79702 | Oil & Gas Operator | Jan 2024 |
| 172 | Pryor Petroleum Corporation | Wichita Falls, TX 76308 | Oil & Gas Operator | Feb 2026 |
| 173 | Purple Top Oil & Gas Co. | Seymour, TX 76380 | Oil & Gas Operator | Jan 2017 |
| 174 | Quinlan Engineering | Wichita Falls, TX 76307 | Oil & Gas Operator | Feb 2026 |
| 175 | Rayco Operating, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Feb 2026 |
| 176 | Reef Exploration, Inc. (A-1) | Richardson, TX 75080 | Oil & Gas Operator | Oct 2006 |
| 177 | Reynolds, Richard | Seymour, TX 76380 | Oil & Gas Operator | Mar 2008 |
| 178 | Rippy Oil Company | Tyler, TX 75702 | Oil & Gas Operator | Feb 2026 |
| 179 | RJM Oil Company, LLC | Irving, TX 75060 | Oil Operator | Feb 2026 |
| 180 | Robuck Petroleum, LLC | Nacogdoches, TX 75965 | Oil & Gas Operator | Feb 2026 |
| 181 | Rogers Drilling Co. | Olney, TX 76374 | Oil & Gas Operator | Feb 2026 |
| 182 | Royal Petroleum Co. | Iowa Park, TX 76367 | Oil & Gas Operator | Feb 2026 |
| 183 | Ryan, Joseph G. | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 184 | Ryder Scott Oil Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Dec 2005 |
| 185 | Seely Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | Feb 2026 |
| 186 | Shawver & Shawver | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 187 | Sierra Exploration Company | San Antonio, TX 78209 | Oil & Gas Operator | Mar 2008 |
| 188 | Simmons, Stanley J. | Olney, TX 76374 | Oil & Gas Operator | Aug 1994 |
| 189 | Smith Pipe Of Abilene | Abilene, TX 79608 | Oil & Gas Operator | Feb 2026 |
| 190 | Spragins, Ed | Wichita Falls, TX 76308 | Oil & Gas Operator | Feb 2026 |
| 191 | Spruiell Drilling Co., Inc. | Holliday, TX 76366 | Oil & Gas Operator | Feb 2026 |
| 192 | SRG Oil Corporation | Abilene, TX 79604 | Oil & Gas Operator | Apr 1994 |
| 193 | Staley, Jack C. | Wichita Falls, TX 76308 | Oil & Gas Operator | Jan 2000 |
| 194 | Steinberger, Gerald | Windthorst, TX 76389 | Oil & Gas Operator | Sep 2007 |
| 195 | Steller Energy & Investment Corp | Plano, TX 75093 | Oil & Gas Operator | Feb 2021 |
| 196 | Stevens & Tull, Inc. | Midland, TX 79702 | Oil & Gas Operator | Jun 2000 |
| 197 | Strange, D. D. | Archer City, TX 76351 | Oil & Gas Operator | Sep 2014 |
| 198 | Sullivan, Hollis R. Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Feb 2009 |
| 199 | Sunday Corporation | Olney, TX 76374 | Oil & Gas Operator | Feb 2026 |
| 200 | T-N-T Engineering, Inc. | Fort Worth, TX 76107 | Oil & Gas Operator | Feb 2026 |