| 6201 | Kohler Energy Corporation | Dallas, TX 75201 | Oil & Gas Operator | Jun 1994 |
| 6202 | Kohler Industrial Nat. Gas, Inc. | Kohler, WI 53044 | Gas Operator | Dec 2000 |
| 6203 | Kojo Energy, Inc. | Odessa, TX 79760 | Oil & Gas Operator | Feb 2026 |
| 6204 | Koko Skadi, LLC | Austin, TX 78731 | Oil & Gas Operator | Feb 2026 |
| 6205 | Kokomo Energy, Inc. | Gorman, TX 76454 | Oil & Gas Operator | Feb 2026 |
| 6206 | Kokomo Oil Company | Houston, TX 77227 | Oil & Gas Operator | Apr 1998 |
| 6207 | Kolb, James | Aspermont, TX 79502 | Oil & Gas Operator | Jul 2003 |
| 6208 | Kollao Properties LLC | Midland, TX 79702 | Oil & Gas Operator | Feb 2026 |
| 6209 | Konantz, Ronald J. Inc. | Houma, LA 70360 | Oil & Gas Operator | Feb 2026 |
| 6210 | Koonce Oil Company | Iowa Park, TX 76367 | Oil & Gas Operator | Oct 1993 |
| 6211 | Koontz Oil Company | Nocona, TX 76255 | Oil Operator | Aug 2022 |
| 6212 | Koram Operating LLC | Houston, TX 77079 | Oil & Gas Operator | Dec 2006 |
| 6213 | Korman Exploration, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Jan 2001 |
| 6214 | Kornye-Tillman Company | Cleburne, TX 76031 | Oil & Gas Operator | Feb 2026 |
| 6215 | Kosarek, Charlie | San Antonio, TX 78213 | Oil & Gas Operator | Oct 2006 |
| 6216 | Kouatli, Aiman M. | Caldwell, TX 77836 | Oil & Gas Operator | Feb 2026 |
| 6217 | Kovar Operating, LLC | Victoria, TX 77901 | Oil & Gas Operator | Sep 2021 |
| 6218 | Koven Production Co. | San Antonio, TX 78232 | Oil & Gas Operator | Aug 2003 |
| 6219 | KP Exploration, Inc. | Houston, TX 77002 | Oil & Gas Operator | Apr 1997 |
| 6220 | Kraft Petroleum Corporation | Conshohocken, PA 19428 | Gas Operator | Sep 2006 |
| 6221 | Kraker & Martin Energy, L.L.C. | Tulsa, OK 74136 | Oil & Gas Operator | Apr 2011 |
| 6222 | Kram Energy | Corpus Chrsti, TX 78404 | Oil & Gas Operator | Feb 2026 |
| 6223 | Kramer Operating, LLC | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 6224 | Kramer, Clifford A. | Wichita Falls, TX 76301 | Oil & Gas Operator | Sep 1997 |
| 6225 | Kramer, Frank & Ethel FLP | Graham, TX 76450 | Oil & Gas Operator | Sep 2014 |
| 6226 | Kramer, Frank C. | Graham, TX 76450 | Oil & Gas Operator | Apr 2004 |
| 6227 | KRC Operating, LLC | Corpus Chrsti, TX 78412 | Oil & Gas Operator | Oct 2025 |
| 6228 | Kremco Oil LLC | Wichita Falls, TX 76308 | Oil Operator | Feb 2026 |
| 6229 | Krenek Enterprises, Inc. | Lovelady, TX 75851 | Oil Operator | Feb 2026 |
| 6230 | Krescent Energy Company, LLC | Houston, TX 77056 | Oil & Gas Operator | Apr 2013 |
| 6231 | KRF Production Company LLC | Houston, TX 77269 | Oil & Gas Operator | Feb 2026 |
| 6232 | Kriken Oil & Gas | Corpus Chrsti, TX 78426 | Oil & Gas Operator | Jul 2005 |
| 6233 | Kriken Oil & Gas, Inc. | Corpus Chrsti, TX 78426 | Oil & Gas Operator | Feb 2026 |
| 6234 | Krisco Oil Co. | Kermit, TX 79745 | Oil Operator | Jul 2022 |
| 6235 | Kristen Oil And Gas, Inc. | Edna, TX 77957 | Oil & Gas Operator | Feb 2026 |
| 6236 | Kriti Exploration, Inc. | Houston, TX 77002 | Oil & Gas Operator | Oct 2012 |
| 6237 | Kriti Te Energy, Inc | Houston, TX 77079 | Oil & Gas Operator | Oct 2017 |
| 6238 | Krocan Energy Corporation | Bowling Green, KY 42102 | Oil & Gas Operator | Feb 2026 |
| 6239 | Krog Partners, LLC | Kilgore, TX 75663 | Oil Operator | Feb 2026 |
| 6240 | Kroh Operating LLC | Austin, TX 78746 | Oil & Gas Operator | Feb 2026 |
| 6241 | Krot Oil Co. | Wichita Falls, TX 76307 | Oil & Gas Operator | Feb 2026 |
| 6242 | KRS Oil Company | Frisco, TX 75034 | Oil & Gas Operator | Apr 2020 |
| 6243 | Ksabe Energy Partners, LLC | Oklahoma City, OK 73106 | Oil Operator | Feb 2026 |
| 6244 | Kstone Energy, LLC | Oklahoma City, OK 73106 | Oil Operator | Feb 2026 |
| 6245 | KT Operating Company LLC | Dallas, TX 75231 | Oil & Gas Operator | Feb 2010 |
| 6246 | KTC Oil Enterprises, LLC | Dallas, TX 75247 | Oil & Gas Operator | Feb 2026 |
| 6247 | KTP Energy, Inc. | Denver, CO 80226 | Oil & Gas Operator | Aug 2019 |
| 6248 | Kuehne Oil Company | Dallas, TX 75201 | Oil & Gas Operator | Aug 2003 |
| 6249 | Kuhn Oil Co Inc | Timber Lake, SD 57656 | Oil Operator | Dec 2024 |
| 6250 | Kukui Operating Company | Ignacio, CO 81137 | Oil & Gas Operator | May 2013 |
| 6251 | Kunu Energy LLC | Wichita Falls, TX 76310 | Oil Operator | Feb 2026 |
| 6252 | Kuran Resources | Wichita Falls, TX 76308 | Oil Operator | Feb 2026 |
| 6253 | Kuykendall, IValene Estate | Electra, TX 76360 | Oil & Gas Operator | Dec 1998 |
| 6254 | Kuykendall, M. C. | Electra, TX 76360 | Oil & Gas Operator | Apr 1995 |
| 6255 | Kuykendall, M.C., Estate | Electra, TX 76360 | Oil & Gas Operator | Aug 2003 |
| 6256 | KVL Operating, LLC | Midland, TX 79708 | Oil & Gas Operator | Feb 2026 |
| 6257 | KWB Oil Property Management Inc | Tulsa, OK 74103 | Oil & Gas Operator | Nov 2025 |
| 6258 | KWS Oil & Gas, LLC | Wink, TX 79789 | Oil & Gas Operator | Feb 2026 |
| 6259 | Kynge Energy Investments LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Feb 2026 |
| 6260 | Kynosa Inc. | Levelland, TX 79336 | Oil & Gas Operator | Jun 1998 |
| 6261 | KZ Global Energy, LLC | Houston, TX 77042 | Oil & Gas Operator | Feb 2026 |
| 6262 | L & B Oil And Gas Equipment, LLC | Palmhurst, TX 78573 | Oil & Gas Operator | Feb 2026 |
| 6263 | L & B Oil Company Inc | Dallas, TX 75225 | Oil & Gas Operator | Mar 2025 |
| 6264 | L & B Production | Big Lake, TX 76932 | Oil & Gas Operator | Feb 2026 |
| 6265 | L & D, Inc. | San Angelo, TX 76906 | Oil & Gas Operator | May 2019 |
| 6266 | L & F Drilling Co., Inc. (1) | Corpus Chrsti, TX 78479 | Oil & Gas Operator | Feb 2026 |
| 6267 | L & G Oil Company | Longview, TX 75606 | Oil & Gas Operator | Aug 2000 |
| 6268 | L & G Operating, Inc. | Borger, TX 79008 | Oil & Gas Operator | Aug 2021 |
| 6269 | L & H Oil Company | Wichita Falls, TX 76301 | Oil & Gas Operator | Oct 1999 |
| 6270 | L & J Exploration, LLC | Carrizo SPGS, TX 78834 | Oil & Gas Operator | Feb 2026 |
| 6271 | L & J Oil | Gainesville, TX 76240 | Oil & Gas Operator | Nov 2000 |
| 6272 | L & J Oil Co. | Borger, TX 79007 | Oil & Gas Operator | Apr 1999 |
| 6273 | L & L Resources, Inc. | Hays, KS 67601 | Oil Operator | Mar 1986 |
| 6274 | L & M Operating, Inc. | Big Lake, TX 76932 | Oil & Gas Operator | Feb 2026 |
| 6275 | L & R Drilling Company | Belle Fourche, SD 57717 | Oil & Gas Operator | Dec 1999 |
| 6276 | L & R Energy Corporation | Spearman, TX 79081 | Oil & Gas Operator | Nov 2014 |
| 6277 | L & R Petroleum | Kilgore, TX 75663 | Oil & Gas Operator | Feb 2026 |
| 6278 | L & S Drilling, Inc. | Kamay, TX 76369 | Oil & Gas Operator | Mar 2016 |
| 6279 | L & W Operators | Pampa, TX 79066 | Oil & Gas Operator | Jan 2018 |
| 6280 | L A Productions | Sunset, TX 76270 | Oil & Gas Operator | Feb 2026 |
| 6281 | L And C Leasing, Inc. | Pampa, TX 79066 | Oil & Gas Operator | Mar 2019 |
| 6282 | L And L Production Company | Skellytown, TX 79080 | Oil & Gas Operator | Sep 1996 |
| 6283 | L L & M Properties, Inc. | Burkburnett, TX 76354 | Oil & Gas Operator | Aug 2004 |
| 6284 | L R Operating Co. | Graford, TX 76449 | Oil & Gas Operator | Jun 2025 |
| 6285 | L-83, Inc. | Midland, TX 79702 | Oil & Gas Operator | Oct 1995 |
| 6286 | L-R Production | Olney, TX 76374 | Oil & Gas Operator | Feb 2026 |
| 6287 | L-Reno Oil And Gas LLC | Graford, TX 76449 | Oil & Gas Operator | Feb 2026 |
| 6288 | L-Texx Petroleum, LP | Arlington, TX 76013 | Oil & Gas Operator | Feb 2026 |
| 6289 | L. S. K. L. Oil Co. | Buda, TX 78610 | Oil & Gas Operator | Feb 2026 |
| 6290 | L.C.S. Production Company | Abilene, TX 79608 | Oil & Gas Operator | Feb 2026 |
| 6291 | L.J. Resources, LLC | Graham, TX 76450 | Gas Operator | Feb 2026 |
| 6292 | L.J.M. Corporation | Houston, TX 77025 | Oil & Gas Operator | Jun 2012 |
| 6293 | L.L. Oil Company | Freer, TX 78357 | Oil & Gas Operator | Feb 2026 |
| 6294 | L.O.G. Energy Exploration, LTD. | Laredo, TX 78041 | Oil & Gas Operator | Feb 2026 |
| 6295 | L.T.D. Explorations Inc. | Alice, TX 78333 | Oil & Gas Operator | Feb 2026 |
| 6296 | L2SG Production, LLC | Nocona, TX 76255 | Oil Operator | May 2020 |
| 6297 | L7 Energy LLC | Wichita Falls, TX 76308 | Oil Operator | Feb 2026 |
| 6298 | La Aceite Energy, Inc. | Abilene, TX 79605 | Oil & Gas Operator | Feb 2026 |
| 6299 | La Campana, Inc. | Port Aransas, TX 78373 | Oil & Gas Operator | Feb 2026 |
| 6300 | La Jolla Oil & Gas, Inc. | Frisco, TX 75034 | Oil & Gas Operator | Feb 2026 |