| 201 | Parallel Energy LP | Tulsa, OK 74136 | Oil & Gas Operator | Dec 2015 |
| 202 | Paramount Producing, Inc. | Pampa, TX 79066 | Oil & Gas Operator | Oct 1996 |
| 203 | Parker & Parsley Development Co. | Midland, TX 79702 | Oil & Gas Operator | May 1995 |
| 204 | Parker & Parsley Development L.P | Midland, TX 79702 | Oil & Gas Operator | Oct 2007 |
| 205 | Pash Energy, Inc. | Borger, TX 79008 | Oil & Gas Operator | Dec 2025 |
| 206 | Perkins-Prothro Company | Wichita Falls, TX 76308 | Oil & Gas Operator | May 2002 |
| 207 | Petco Energy Corporation | Hinsdale, IL 60521 | Oil & Gas Operator | Dec 2025 |
| 208 | Petco Petroleum Corp | Hinsdale, IL 60521 | Oil & Gas Operator | Sep 2025 |
| 209 | Petrolia Group, L.L.C. | Katy, TX 77449 | Oil & Gas Operator | Dec 2025 |
| 210 | PG-M International Operating,LLC | Borger, TX 79008 | Oil & Gas Operator | Dec 2025 |
| 211 | Phillips Petroleum Company | Houston, TX 77251 | Oil & Gas Operator | Mar 2013 |
| 212 | Pierre Petroleum Corp. | Borger, TX 79007 | Oil & Gas Operator | Feb 1997 |
| 213 | Pioneer Natural Res. USA, Inc. | Spring, TX 77389 | Oil & Gas Operator | Dec 2025 |
| 214 | Plains Marketing, LP | Cushing, OK 74023 | Oil Operator | Jan 2012 |
| 215 | Plemons Enterprises | Borger, TX 79008 | Oil & Gas Operator | Aug 1998 |
| 216 | Plumley, M. C. & Associates | Borger, TX 79008 | Oil & Gas Operator | Dec 2025 |
| 217 | Pogo Panhandle 2004, L.P. | Houston, TX 77002 | Oil & Gas Operator | Oct 2017 |
| 218 | Polaris Operating, LLC | Dallas, TX 75225 | Oil & Gas Operator | Dec 2025 |
| 219 | Ponderosa Petroleum, Inc. | Brownfield, TX 79316 | Oil & Gas Operator | Dec 2025 |
| 220 | Ponderosa TX Operating LLC | Stinnett, TX 79083 | Oil & Gas Operator | Dec 2025 |
| 221 | Post Oak Oil Company | Oklahoma City, OK 73112 | Oil & Gas Operator | Jul 2013 |
| 222 | Prairie Oil Company | Pampa, TX 79066 | Oil & Gas Operator | Jan 2017 |
| 223 | Producers Environmental Ser. Inc | Borger, TX 79008 | Oil & Gas Operator | Dec 2025 |
| 224 | Pruett, Cecil | Borger, TX 79008 | Oil & Gas Operator | Aug 2003 |
| 225 | PXP Gulf Coast Inc. | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 226 | Quest-Tex Energy Operating, LLC | Dallas, TX 75225 | Oil & Gas Operator | Dec 2025 |
| 227 | Questa Energy Corporation | Amarillo, TX 79159 | Oil & Gas Operator | Dec 2025 |
| 228 | Quinque Operating Company | Liberal, KS 67905 | Oil & Gas Operator | Jun 2025 |
| 229 | Ranger Operating Co. | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 230 | Red Line Company, LTD. | Pampa, TX 79066 | Oil & Gas Operator | Dec 2025 |
| 231 | Redstone Operating, Inc. | Austin, TX 78734 | Oil & Gas Operator | Jan 2015 |
| 232 | Reneau, James Seed Co. | Shamrock, TX 79079 | Oil & Gas Operator | Dec 2025 |
| 233 | Restoration Energy LLC | Amarillo, TX 79124 | Oil & Gas Operator | Dec 2025 |
| 234 | Riata Energy, Inc. | Oklahoma City, OK 73101 | Oil & Gas Operator | Nov 2006 |
| 235 | Richmond Petroleum Inc. | Amarillo, TX 79105 | Oil & Gas Operator | Aug 2003 |
| 236 | Rimrock Gas Company | Weatherford, OK 73096 | Oil & Gas Operator | May 2008 |
| 237 | Rio Petroleum, Inc. | Amarillo, TX 79102 | Oil & Gas Operator | Dec 2025 |
| 238 | Romines & Warner | Pampa, TX 79065 | Oil & Gas Operator | Jan 2002 |
| 239 | Romines Operating Group | Pampa, TX 79066 | Oil & Gas Operator | Nov 2022 |
| 240 | Roxi Production | Pampa, TX 79065 | Oil & Gas Operator | Dec 2025 |
| 241 | S & W Oil & Gas, LLC | Pampa, TX 79066 | Oil & Gas Operator | Dec 2025 |
| 242 | S. A. Oil Account | Borger, TX 79008 | Oil & Gas Operator | Dec 1997 |
| 243 | Samco | Whitesboro, TX 76273 | Oil & Gas Operator | Aug 2013 |
| 244 | Samson Resources Company | Tulsa, OK 74103 | Oil & Gas Operator | Oct 2025 |
| 245 | Sanchez Production, LLC | Pampa, TX 79065 | Oil & Gas Operator | Dec 2025 |
| 246 | Sand Springs Oil & Gas Co. | Tulsa, OK 74136 | Oil & Gas Operator | Dec 2025 |
| 247 | Sandridge Energy, Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | May 2018 |
| 248 | Sandridge Exploration And Production LLC | Oklahoma City, OK 73104 | Oil & Gas Operator | Dec 2025 |
| 249 | Sargeco, Inc. | Pampa, TX 79065 | Oil & Gas Operator | Sep 2018 |
| 250 | Scout Energy Management LLC | Dallas, TX 75240 | Oil & Gas Operator | Dec 2025 |
| 251 | Seagull Energy E & P Inc | Houston, TX 77002 | Oil & Gas Operator | Jan 2015 |
| 252 | Seagull Midcon Inc. | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 253 | Service Drilling Co. | Tulsa, OK 74119 | Oil & Gas Operator | Oct 1998 |
| 254 | Service Drilling Co., L.L.C. | Tulsa, OK 74119 | Oil & Gas Operator | Oct 2003 |
| 255 | Sidwell Oil & Gas, Inc. | Amarillo, TX 79105 | Oil & Gas Operator | Sep 2014 |
| 256 | Sip'S Oil & Gas Inc | Yukon, OK 73099 | Oil & Gas Operator | Dec 2025 |
| 257 | Snappy Services, Inc. | Pampa, TX 79066 | Oil & Gas Operator | Dec 2025 |
| 258 | SNW Operating Company | Borger, TX 79008 | Oil & Gas Operator | Dec 2025 |
| 259 | Southwest Royalties, Inc. | Midland, TX 79710 | Oil & Gas Operator | Dec 2025 |
| 260 | Stallion Energy LLC | Houston, TX 77090 | Oil & Gas Operator | Oct 2009 |
| 261 | Stallion Energy, Inc. | Houston, TX 77060 | Oil & Gas Operator | Oct 2017 |
| 262 | Suits & Jeans, LLC | Pampa, TX 79066 | Oil & Gas Operator | Dec 2025 |
| 263 | Suoco Oil Corporation | Pampa, TX 79066 | Oil & Gas Operator | Dec 2025 |
| 264 | T&R Energy Services | Pampa, TX 79065 | Oil & Gas Operator | Dec 2025 |
| 265 | TB Operating, LLC | Borger, TX 79008 | Oil & Gas Operator | Jun 2018 |
| 266 | Tess Oil Company | Borger, TX 79008 | Oil & Gas Operator | Mar 2008 |
| 267 | Tex-Well Oil & Gas Corp. | Pampa, TX 79066 | Oil & Gas Operator | Aug 2003 |
| 268 | Texaco E & P Inc. | Houston, TX 77099 | Oil & Gas Operator | Dec 2025 |
| 269 | Texian Energy Corporation | Amarillo, TX 79120 | Oil & Gas Operator | Apr 1997 |
| 270 | The Operating Co. | Pampa, TX 79065 | Oil & Gas Operator | Sep 2007 |
| 271 | Toney, W.L. | Borger, TX 79007 | Oil & Gas Operator | Oct 2012 |
| 272 | Trans Terra Corp., International | Amarillo, TX 79159 | Oil & Gas Operator | Feb 2009 |
| 273 | Travelers Oil Company | Amarillo, TX 79102 | Oil & Gas Operator | Dec 2025 |
| 274 | Trivestco Energy Company | Ponca City, OK 74601 | Oil & Gas Operator | Oct 2025 |
| 275 | Tryma Operating | Borger, TX 79008 | Oil & Gas Operator | Dec 2025 |
| 276 | TTL Energy Resources, Inc. | Borger, TX 79008 | Oil & Gas Operator | Aug 2013 |
| 277 | Tumble Weed Production Co. | Borger, TX 79008 | Oil & Gas Operator | Dec 1994 |
| 278 | Viola Production Inc | Dallas, TX 75251 | Oil & Gas Operator | Dec 2025 |
| 279 | Vitol Inc. | Houston, TX 77098 | Oil & Gas Operator | Sep 2023 |
| 280 | W. B. D. Oil & Gas Company | Pampa, TX 79066 | Oil & Gas Operator | Dec 1995 |
| 281 | W. R. Williams, Inc. | Amarillo, TX 79105 | Gas Operator | Dec 2019 |
| 282 | W.B.D. Oil And Gas Inc. | Pampa, TX 79066 | Oil & Gas Operator | Oct 2019 |
| 283 | Walls Energy, Inc. | Pampa, TX 79066 | Oil & Gas Operator | Aug 2003 |
| 284 | Watkins, J. B. | Borger, TX 79007 | Oil & Gas Operator | May 2009 |
| 285 | Watson Operating Company | Pampa, TX 79066 | Oil & Gas Operator | Dec 2003 |
| 286 | Werner Oil, Inc. | Borger, TX 79008 | Oil & Gas Operator | Sep 1996 |
| 287 | Wheeler Energy Co. | Tulsa, OK 74101 | Oil & Gas Operator | Oct 2025 |
| 288 | Wheeler Oil Co. (A) | Amarillo, TX 79114 | Gas Operator | Apr 2001 |
| 289 | Wilbanks Exploration Inc | Denver, CO 80202 | Oil & Gas Operator | May 2002 |
| 290 | Wilham Investments, Inc. | Pampa, TX 79065 | Oil & Gas Operator | Jan 2020 |
| 291 | Williams, W. R. | Amarillo, TX 79105 | Oil & Gas Operator | Jun 2013 |
| 292 | Williams, W. R., Inc. | Amarillo, TX 79105 | Oil & Gas Operator | Feb 2024 |
| 293 | Wilson Operating Company LLC | Tulsa, OK 74105 | Oil & Gas Operator | Dec 2025 |
| 294 | Wischkaemper, Kenneth | Shamrock, TX 79079 | Oil & Gas Operator | Dec 2025 |
| 295 | Wo Operating Company | Tulsa, OK 74159 | Oil & Gas Operator | Dec 2025 |
| 296 | WS Ritter Critters, LLC | Groom, TX 79039 | Gas Operator | Dec 2025 |
| 297 | WTG Exploration | Midland, TX 79705 | Oil & Gas Operator | Dec 2025 |
| 298 | Xet, Inc. | Pampa, TX 79066 | Oil & Gas Operator | Aug 2017 |
| 299 | Youngblood, C. S. III | Pampa, TX 79065 | Oil & Gas Operator | Dec 2001 |