| 201 | Murfin Drilling Company Inc | Wichita, KS 67202 | Oil & Gas Operator | Aug 2025 | 
| 202 | Murjo Oil & Royalty Company | Fort Worth, TX 76121 | Oil & Gas Operator | Jun 2025 | 
| 203 | Mustang Energy Corporation | Hays, KS 67601 | Oil Operator | Jun 2025 | 
| 204 | Myers Robert W J |  | Oil Operator | Jun 1991 | 
| 205 | N-B Company Inco |  | Oil & Gas Operator | Apr 1992 | 
| 206 | Nadel And Gussman | Tulsa, OK 74103 | Oil & Gas Operator | May 2007 | 
| 207 | National Coopera |  | Oil & Gas Operator | Mar 1992 | 
| 208 | National Oil Com |  | Oil & Gas Operator | Oct 1992 | 
| 209 | National Petroleum Reserves, Inc. | Wichita, KS 67206 | Oil & Gas Operator | Apr 2012 | 
| 210 | Nec Operating - Kansas, LLC | Southlake, TX 76092 | Oil & Gas Operator | Jun 2025 | 
| 211 | New Age Oil LLC | Hays, KS 67601 | Oil & Gas Operator | Jun 2025 | 
| 212 | Noah, Calvin | Valley Center, KS 67147 | Oil Operator | Oct 2010 | 
| 213 | Norstar Petroleum Inc | Englewood, CO 80112 | Oil & Gas Operator | Jun 2025 | 
| 214 | Northern Lights Oil Company, LLC | Andover, KS 67002 | Oil & Gas Operator | Jun 2025 | 
| 215 | Osborn Heirs Com |  | Oil & Gas Operator | May 1995 | 
| 216 | Oxford Explorati |  | Oil & Gas Operator | Mar 1993 | 
| 217 | Oxy USA Inc | Houston, TX 77046 | Oil & Gas Operator | Oct 2025 | 
| 218 | Ozark Enterprise |  | Oil Operator | Nov 1990 | 
| 219 | Pancanadian Petr |  | Oil Operator | Aug 1990 | 
| 220 | Patterson Energy LLC | Hays, KS 67601 | Oil Operator | Jun 2025 | 
| 221 | Paul Bowman Oil Trust | Codell, KS 67663 | Oil Operator | Jun 2025 | 
| 222 | Pelican Hill Oil & Gas Inc | Carlsbad, CA 92010 | Oil & Gas Operator | May 2013 | 
| 223 | Petro Pak Corpor |  | Oil Operator | Aug 1988 | 
| 224 | Petro-Lewis Corp. |  | Oil & Gas Operator | Feb 1994 | 
| 225 | Petroleum Incorp |  | Oil & Gas Operator | Apr 1993 | 
| 226 | Petroleum Manage |  | Oil & Gas Operator | Oct 1994 | 
| 227 | Petroleum Prod. MGMT |  | Oil Operator | Nov 1995 | 
| 228 | Petroleum Produc |  | Oil & Gas Operator | Dec 1996 | 
| 229 | Petroleum Production Management, Inc. | Shawnee Mission, KS 66202 | Oil & Gas Operator | Nov 2021 | 
| 230 | Petroventures In |  | Oil Operator | Apr 1987 | 
| 231 | Phillips Exploration Company L.C. | Andover, KS 67002 | Oil & Gas Operator | Jun 2025 | 
| 232 | Phillips Petrole |  | Oil & Gas Operator | May 1995 | 
| 233 | Phillips Petroleum Company | Houston, TX 77251 | Oil & Gas Operator | Mar 2013 | 
| 234 | Pickrell Drilling Co., Inc. | Wichita, KS 67213 | Oil & Gas Operator | Jun 2025 | 
| 235 | Pioneer Resources | Jefferson, CO 80456 | Oil Operator | Dec 2009 | 
| 236 | Pioneer Resources Inc. | Phillipsburg, KS 67661 | Oil & Gas Operator | Oct 2020 | 
| 237 | Prater Oil & Gas Operations, Inc. | Pratt, KS 67124 | Oil & Gas Operator | Jun 2025 | 
| 238 | Pratt, Don E. | Hays, KS 67601 | Oil Operator | Dec 1999 | 
| 239 | Price Robert R O |  | Oil Operator | Apr 1995 | 
| 240 | Production Drilling, Inc. | Hays, KS 67601 | Oil Operator | Jun 2025 | 
| 241 | Prospect Oil & Gas Corp | Russell, KS 67665 | Oil Operator | Jun 2025 | 
| 242 | Quail Oil & Gas LC | Garden City, KS 67846 | Oil & Gas Operator | Jul 2025 | 
| 243 | Rains & Williams |  | Oil & Gas Operator | Nov 1995 | 
| 244 | Rains And Williamson Oil Co. | Wichita, KS 67277 | Oil & Gas Operator | Jun 2025 | 
| 245 | Rama Operating Co., Inc. | Stafford, KS 67578 | Oil & Gas Operator | Jun 2025 | 
| 246 | Raney Oil Company | Lawrence, KS 66047 | Oil & Gas Operator | May 1999 | 
| 247 | Raney Oil Company, LLC | Lawrence, KS 66049 | Oil & Gas Operator | Jun 2025 | 
| 248 | Raymond Oil Comp |  | Oil & Gas Operator | Dec 1996 | 
| 249 | Red Hills Energy, LLC | Medicine Lodge, KS 67104 | Oil & Gas Operator | Jun 2025 | 
| 250 | Red Mountain Oil LLC | Golden, CO 80402 | Oil Operator | Nov 1997 | 
| 251 | Red Oak Energy, Inc. | Wichita, KS 67207 | Oil & Gas Operator | Jun 2025 | 
| 252 | Reef Operating, Inc. | Hays, KS 67601 | Oil Operator | Jun 2025 | 
| 253 | Reilly Oil Company, Inc. | Wakeeney, KS 67672 | Oil Operator | Jun 2025 | 
| 254 | Reilly Oil E & P |  | Oil Operator | Jun 2025 | 
| 255 | Resource Operations, Inc. | Tulsa, OK 74157 | Oil & Gas Operator | May 2016 | 
| 256 | Rice Engineering Corporation | Great Bend, KS 67530 | Oil & Gas Operator | Feb 2023 | 
| 257 | Richlan Drilling |  | Oil Operator | Dec 1994 | 
| 258 | Richlan Drilling, A General Partnership | Beaver, KS 67525 | Oil & Gas Operator | Jun 2025 | 
| 259 | Richland Oil Investments, LLC | Palco, KS 67657 | Oil Operator | Jun 2025 | 
| 260 | Rider Oil & Gas |  | Oil Operator | Aug 1991 | 
| 261 | Ritchie Explorat |  | Oil & Gas Operator | Dec 1996 | 
| 262 | Ritchie Exploration |  | Oil Operator | Aug 1995 | 
| 263 | Ritchie Exploration, Inc. | Wichita, KS 67278 | Oil & Gas Operator | Jun 2025 | 
| 264 | Ritchie, A. Scott | Wichita, KS 67202 | Oil Operator | Mar 1988 | 
| 265 | RL Investment, LLC | Hill City, KS 67642 | Oil Operator | Jun 2025 | 
| 266 | RLT Investment | Morland, KS 67650 | Oil Operator | Mar 2009 | 
| 267 | Rome Oil, LLC | Lakewood, CO 80232 | Oil Operator | Jun 2025 | 
| 268 | Ron'S Oil Oper I |  | Oil Operator | Nov 1994 | 
| 269 | Ron'S Oil Operations Inc | Penokee, KS 67659 | Oil Operator | Dec 2018 | 
| 270 | Royal Drilling Inc | Russell, KS 67665 | Oil Operator | Jun 2025 | 
| 271 | Running Foxes Petroleum Inc. | Centennial, CO 80112 | Oil & Gas Operator | Jun 2025 | 
| 272 | Rush, Terry L. | Wakeeney, KS 67672 | Oil Operator | Jun 2025 | 
| 273 | Russell Oil, Inc. | Edmond, OK 73083 | Oil Operator | Jun 2025 | 
| 274 | S.B. Oil Company, A General Partnership | Hays, KS 67601 | Oil Operator | Sep 2019 | 
| 275 | Samson Resources |  | Oil Operator | Jan 1994 | 
| 276 | Sandlin Oil Corp | Dacono, CO 80514 | Oil & Gas Operator | Aug 2025 | 
| 277 | Satchell Creek Petroleum, LLC | Wichita, KS 67205 | Oil Operator | Jul 2024 | 
| 278 | Scheck Oil Operation |  | Oil & Gas Operator | Jun 2025 | 
| 279 | Schlobohm, Starr F. | Wolfeboro, NH 03894 | Oil Operator | Jul 2004 | 
| 280 | Sentinel Petroleum Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Feb 2020 | 
| 281 | Shelby Resources LLC | Denver, CO 80207 | Oil & Gas Operator | Jun 2025 | 
| 282 | Shields Oil Producers Inc. | Russell, KS 67665 | Oil Operator | Jun 2025 | 
| 283 | Slawson, Donald C. | Wichita, KS 67202 | Oil & Gas Operator | Apr 2025 | 
| 284 | Smoky Valley Res |  | Oil & Gas Operator | Dec 1995 | 
| 285 | Southern States |  | Oil & Gas Operator | Jul 1988 | 
| 286 | Spiral Energy Corp. | Midland, TX 79705 | Oil & Gas Operator | Dec 2019 | 
| 287 | Spring, Harry A. | Ardmore, OK 73401 | Oil Operator | Jul 2012 | 
| 288 | Staab Oil Co., A General Partnership | Hays, KS 67601 | Oil Operator | Jun 2025 | 
| 289 | Standard Operating Company | Wichita, KS 67205 | Oil & Gas Operator | Jun 2025 | 
| 290 | Stratakan Exploration, LLC | Plainville, KS 67663 | Oil & Gas Operator | Jun 2025 | 
| 291 | Stull Oil LLC | Natoma, KS 67651 | Oil Operator | Jun 2025 | 
| 292 | Sunoco Partners Marketing |  | Oil Operator | Apr 2023 | 
| 293 | T & C MFG. & Operating, Inc. | Great Bend, KS 67530 | Oil Operator | May 2022 | 
| 294 | Te-Pe Oil & Gas |  | Oil & Gas Operator | Jun 2025 | 
| 295 | Tema Oil And Gas, LLC | Houston, TX 77040 | Oil & Gas Operator | Apr 2000 | 
| 296 | Tengasco, Inc. | Houston, TX 77063 | Oil & Gas Operator | Jun 2025 | 
| 297 | Terrol Energy, Inc. | Hygiene, CO 80533 | Oil & Gas Operator | Dec 2006 | 
| 298 | Texaco Explorati |  | Oil & Gas Operator | Dec 1996 | 
| 299 | Texkan Exploration LLC | Plainville, KS 67663 | Oil Operator | Dec 2019 | 
| 300 | Texkan Resources, LLC | Odessa, TX 79765 | Oil & Gas Operator | Jun 2025 |