| 201 | Kasle Energy Inc. | Cross Plains, TX 76443 | Oil & Gas Operator | Mar 2017 |
| 202 | Kelso Oil LLC | Chase, KS 67524 | Oil & Gas Operator | Apr 2007 |
| 203 | Kimbell Oil Company Of Texas | Fort Worth, TX 76102 | Oil & Gas Operator | Sep 2025 |
| 204 | Kimbell Operating Company | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2025 |
| 205 | Klabzuba Operating Company | Fort Worth, TX 76102 | Oil & Gas Operator | Aug 2013 |
| 206 | Knight, Reuben B. | Windthorst, TX 76389 | Oil & Gas Operator | Dec 2025 |
| 207 | Kodiak Oil & Gas Inc | Muenster, TX 76252 | Oil & Gas Operator | Dec 2025 |
| 208 | L & J Oil | Gainesville, TX 76240 | Oil & Gas Operator | Nov 2000 |
| 209 | L.T.D. Explorations Inc. | Alice, TX 78333 | Oil & Gas Operator | Dec 2025 |
| 210 | Latigo Oil & Gas, Inc. | Woodward, OK 73801 | Oil & Gas Operator | Oct 2025 |
| 211 | Leroy Oil Co. | Gainesville, TX 76240 | Oil & Gas Operator | Jun 2002 |
| 212 | Lime Rock Resources IV-A, L.P. | Houston, TX 77002 | Oil & Gas Operator | Dec 2025 |
| 213 | Little, Quintin Company,Inc.,The | Ardmore, OK 73402 | Oil & Gas Operator | Dec 2025 |
| 214 | Luke, W. J. | Muenster, TX 76252 | Oil & Gas Operator | Mar 2013 |
| 215 | Lynx Oil Co., Inc. | Denton, TX 76207 | Oil & Gas Operator | Sep 2003 |
| 216 | M-B Operating Co., Inc. | Rowlett, TX 75030 | Oil & Gas Operator | Dec 2025 |
| 217 | Maverick Production | Nocona, TX 76255 | Oil & Gas Operator | May 2007 |
| 218 | Mayco Oil | Nocona, TX 76255 | Oil & Gas Operator | Dec 2025 |
| 219 | McCormack, Lowell Ray | Gainesville, TX 76240 | Oil & Gas Operator | Dec 1993 |
| 220 | McCormack, Paul H. | Gainesville, TX 76241 | Oil & Gas Operator | Sep 2003 |
| 221 | McCutchin, Gene | Dallas, TX 75380 | Oil & Gas Operator | Aug 2003 |
| 222 | McCutchin, Jerry | Dallas, TX 75380 | Oil & Gas Operator | Mar 2008 |
| 223 | McMurrey, R. J., Production Comp | Tyler, TX 75711 | Oil & Gas Operator | Dec 2025 |
| 224 | Merit Energy Company | Dallas, TX 75240 | Oil & Gas Operator | Dec 2025 |
| 225 | Merritt Operating, Inc. | Mineola, TX 75773 | Oil & Gas Operator | Dec 2025 |
| 226 | Miller Petroleum LLC | Graham, TX 76450 | Oil Operator | Dec 2025 |
| 227 | Miller, Bob I. | Abilene, TX 79604 | Oil & Gas Operator | Mar 2008 |
| 228 | Miller, Glenn J. | Muenster, TX 76252 | Oil & Gas Operator | Jul 2025 |
| 229 | Mineral Development, Inc. | Dallas, TX 75231 | Oil & Gas Operator | Aug 1996 |
| 230 | Mna Enterprises LTD. Co. | Hobbs, NM 88242 | Oil & Gas Operator | Aug 2025 |
| 231 | Modern Exploration, Inc. | Sherman, TX 75090 | Oil & Gas Operator | Dec 2025 |
| 232 | Moncrief W A Jr | Fort Worth, TX 76102 | Oil & Gas Operator | Oct 2025 |
| 233 | Moody Oil Co. | Pearsall, TX 78061 | Oil & Gas Operator | Dec 2025 |
| 234 | Mountain Creek Oil Company, Inc. | Saint Jo, TX 76265 | Oil & Gas Operator | Dec 2025 |
| 235 | Muenster Drilling Co. Inc. | Muenster, TX 76252 | Oil & Gas Operator | Dec 2025 |
| 236 | Nacogdoches Oil & Gas Inc | Nacogdoches, TX 75963 | Oil & Gas Operator | Dec 2025 |
| 237 | Nadel & Gussman | Tulsa, OK 74103 | Oil & Gas Operator | May 2007 |
| 238 | National Surface & Minerals, LLC | Addison, TX 75001 | Gas Operator | Jan 2023 |
| 239 | Neu, Freddie | Gainesville, TX 76240 | Oil & Gas Operator | Dec 2025 |
| 240 | Newark E&P Operating, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Jun 2017 |
| 241 | Newton Corp.,The | Dallas, TX 75251 | Oil & Gas Operator | Dec 2025 |
| 242 | NHRG Inc | Wichita Falls, TX 76308 | Oil Operator | Dec 2025 |
| 243 | Nortex Energy, Inc. | Muenster, TX 76252 | Oil Operator | Dec 2025 |
| 244 | O'Neal Operating Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Dec 1999 |
| 245 | O'Neal, Lindell | Nocona, TX 76255 | Oil & Gas Operator | Sep 2025 |
| 246 | Oleum Partners, LLC | Frisco, TX 75034 | Oil & Gas Operator | Dec 2025 |
| 247 | Ops Group Limited | Houston, TX 77060 | Oil & Gas Operator | Jun 2014 |
| 248 | Orsburn, Wade Inc. | Gainesville, TX 76240 | Oil & Gas Operator | Nov 2002 |
| 249 | Osborn,W.B. Oil & Gas Operations | San Antonio, TX 78217 | Oil & Gas Operator | Dec 2025 |
| 250 | Outline Oil Corp. | San Antonio, TX 78217 | Oil & Gas Operator | Dec 2025 |
| 251 | Ozark Exploration, Inc. | Dallas, TX 75205 | Oil & Gas Operator | Dec 2025 |
| 252 | Panhandle Oil & Gas Inc | Oklahoma City, OK 73112-5688 | Oil & Gas Operator | May 2007 |
| 253 | Panther Creek Resources, LLC | Denver, CO 80202 | Oil & Gas Operator | May 2012 |
| 254 | Patrick & Hadley | Nocona, TX 76255 | Oil & Gas Operator | Jul 1999 |
| 255 | Peak Flow Operating&Drilling LP | Fort Worth, TX 76102 | Oil & Gas Operator | Jun 2011 |
| 256 | Peba Oil & Gas Co. | Wichita Falls, TX 76302 | Oil & Gas Operator | Jun 2015 |
| 257 | Perkins-Prothro Company | Wichita Falls, TX 76308 | Oil & Gas Operator | May 2002 |
| 258 | Peterson Oil And Gas LLC | Wichita Falls, TX 76310 | Oil & Gas Operator | Dec 2025 |
| 259 | Peterson, Don Company | Loving, TX 76460 | Oil & Gas Operator | Jul 2017 |
| 260 | Petex | Breckenridge, TX 76424 | Oil & Gas Operator | Dec 2025 |
| 261 | Phillips Petroleum Company | Houston, TX 77251 | Oil & Gas Operator | Mar 2013 |
| 262 | Plains Marketing, LP | Cushing, OK 74023 | Oil Operator | Jan 2012 |
| 263 | Plains Production Inc | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 1995 |
| 264 | Poteet Operating Co. | Wichita Falls, TX 76307 | Oil & Gas Operator | Aug 1994 |
| 265 | Powell & Brown | Denver City, TX 79323 | Oil & Gas Operator | Mar 2008 |
| 266 | Powell, J.W. | Muenster, TX 76252 | Oil & Gas Operator | Dec 1994 |
| 267 | Precision Operating Inc. | Richardson, TX 75080 | Oil & Gas Operator | Jul 2014 |
| 268 | Pride Energy Company | Tulsa, OK 74170 | Oil & Gas Operator | Dec 2025 |
| 269 | Prince Properties, Inc. | Electra, TX 76360 | Oil & Gas Operator | Aug 2003 |
| 270 | Pyramid Enterprises | Muenster, TX 76252 | Oil & Gas Operator | Dec 2025 |
| 271 | R & R Energy, LTD. | Muenster, TX 76252 | Oil Operator | Dec 2025 |
| 272 | Ramsey, Sid | Arlington, TX 76010 | Oil & Gas Operator | Aug 2012 |
| 273 | Raven Operating Group, Inc. | Sedalia, CO 80135 | Oil & Gas Operator | Dec 2010 |
| 274 | Reed Oil Company | Gainesville, TX 76241 | Oil & Gas Operator | Jun 2005 |
| 275 | Reed Production, Inc. | Gainesville, TX 76241 | Oil Operator | Dec 2025 |
| 276 | Richey Properties, Inc. | Tyler, TX 75711 | Oil & Gas Operator | Dec 2025 |
| 277 | Richland Energy, Inc. | Irving, TX 75063 | Oil & Gas Operator | Dec 2025 |
| 278 | Rife Energy Operating, Inc. | Fort Worth, TX 76116 | Oil & Gas Operator | Dec 2025 |
| 279 | Rife Oil Properties Inc | Fort Worth, TX 76107 | Oil & Gas Operator | Dec 2025 |
| 280 | Rincon Production Co., Inc. | Farmers BRNCH, TX 75234 | Oil & Gas Operator | Apr 1997 |
| 281 | Ro-Jo, Inc. | Highland VLG, TX 75077 | Oil & Gas Operator | Aug 2003 |
| 282 | Roach, R. Byron Trustee | Judson, TX 75660 | Oil & Gas Operator | Mar 1999 |
| 283 | Robinett Resources Inc. | Longview, TX 75601 | Oil & Gas Operator | Dec 1999 |
| 284 | Rockin C Production, L.L.C. | Nocona, TX 76255 | Oil Operator | May 2025 |
| 285 | Rocking, R, Drilling & Prod Co. | Bowie, TX 76230 | Oil & Gas Operator | Dec 2025 |
| 286 | Rohmer, A. J. | Muenster, TX 76252 | Oil & Gas Operator | Apr 1997 |
| 287 | Rohmer, Tony S. | Muenster, TX 76252 | Oil & Gas Operator | Sep 2015 |
| 288 | Romco | Muenster, TX 76252 | Oil & Gas Operator | Mar 2015 |
| 289 | Ropa Exploration Corp. | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2011 |
| 290 | Rowland Tank Truck Company | Whitewright, TX 75491 | Oil & Gas Operator | Dec 2025 |
| 291 | Safari Oil Corporation | Gainesville, TX 76240 | Oil & Gas Operator | Sep 2003 |
| 292 | Sage Natural Resources LLC | Tulsa, OK 74170 | Oil & Gas Operator | Dec 2025 |
| 293 | Sage Oil And Gas, LLC | Graham, TX 76450 | Gas Operator | Dec 2025 |
| 294 | Sand Springs Oil & Gas Co. | Tulsa, OK 74136 | Oil & Gas Operator | Dec 2025 |
| 295 | Sauder Management Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Dec 2025 |
| 296 | Schalk, Thomas S. | Wichita Falls, TX 76301 | Oil & Gas Operator | Aug 1995 |
| 297 | Seelye, William L. | Plano, TX 75024 | Oil & Gas Operator | Oct 2005 |
| 298 | Seiguf Oil Company, Inc. | Wichita Falls, TX 76307 | Oil & Gas Operator | Dec 2025 |
| 299 | Seitz, Comegys & Seitz | Wichita Falls, TX 76307 | Oil & Gas Operator | Oct 1994 |
| 300 | Seitz, J. R. & Adam | Wichita Falls, TX 76307 | Oil & Gas Operator | Mar 2008 |