| 6301 | La Mar, Paul W. | Nocona, TX 76255 | Oil & Gas Operator | May 1995 |
| 6302 | La Parrita Oil & Gas, Inc. | Rosenberg, TX 77471 | Oil & Gas Operator | May 2002 |
| 6303 | La Roca Energy, LP | Dallas, TX 75207 | Oil & Gas Operator | May 2024 |
| 6304 | La Ronya Oil & Gas | George West, TX 78022 | Gas Operator | Feb 2026 |
| 6305 | La Sara Operating Company, LLC | Houston, TX 77056 | Oil & Gas Operator | Dec 2015 |
| 6306 | La Vernia Oil | La Vernia, TX 78121 | Oil Operator | Feb 2026 |
| 6307 | La Vernia Oil Co. | La Vernia, TX 78121 | Oil & Gas Operator | Aug 2003 |
| 6308 | La VIda Energy Corporation | Midland, TX 79702 | Oil & Gas Operator | Apr 1993 |
| 6309 | Lace Operating | Fort Worth, TX 76114 | Oil & Gas Operator | Jun 1997 |
| 6310 | Lackey, William H. Oil And Gas | Shawnee, OK 74804 | Oil & Gas Operator | Feb 2024 |
| 6311 | Laclede Operating Co. | Pampa, TX 79065 | Gas Operator | Aug 1999 |
| 6312 | Lacy 03, LLC | Gonzales, TX 78629 | Oil & Gas Operator | Feb 2026 |
| 6313 | Lacy Operations, LTD. | Longview, TX 75606 | Oil & Gas Operator | Oct 2012 |
| 6314 | Lacy, F. B. Inc. | Houston, TX 77055 | Oil & Gas Operator | Sep 1997 |
| 6315 | Lacy, J. W., Jr. | Midland, TX 79702 | Oil & Gas Operator | Dec 2007 |
| 6316 | Lacy, R., Inc. | Longview, TX 75606 | Oil & Gas Operator | Jan 2002 |
| 6317 | Ladd Oil & Gas Corporation | Midland, TX 79711 | Oil & Gas Operator | Dec 2021 |
| 6318 | Ladd Operating Company | Midland, TX 79711 | Oil & Gas Operator | Mar 2008 |
| 6319 | Ladd Petroleum Corp. | Denver, CO 80202 | Oil & Gas Operator | Oct 2004 |
| 6320 | Laddex, LTD. | Amarillo, TX 79102 | Oil & Gas Operator | Feb 2025 |
| 6321 | Lafonda Energy LLC | Vernon, TX 76384 | Oil Operator | Feb 2026 |
| 6322 | Lagarto Company, The | Fredericksbrg, TX 78624 | Oil & Gas Operator | Apr 1995 |
| 6323 | Lagerquist, Walter G., Jr. | San Antonio, TX 78209 | Oil & Gas Operator | Sep 2005 |
| 6324 | Laguna Oil & Gas Corp. | Weesatche, TX 77993 | Oil & Gas Operator | Feb 2026 |
| 6325 | Laguna Petroleum Company | Casper, WY 82601 | Oil & Gas Operator | Dec 1982 |
| 6326 | Laguna Petroleum Corporation | Houston, TX 77046 | Oil & Gas Operator | Feb 2026 |
| 6327 | Lainco Well Service | Hamlin, TX 79520 | Oil & Gas Operator | Dec 1996 |
| 6328 | Lainco Well Service, Inc. | Hamlin, TX 79520 | Oil & Gas Operator | Aug 2011 |
| 6329 | Lainco, Inc. | Hamlin, TX 79520 | Oil & Gas Operator | Feb 2026 |
| 6330 | Lake Crystal Operating LLC | Sugar Land, TX 77496 | Oil & Gas Operator | Feb 2026 |
| 6331 | Lake Ronel Oil Company | Tyler, TX 75710 | Oil & Gas Operator | Jul 2017 |
| 6332 | Lakehills Production, Inc. | Austin, TX 78701 | Oil & Gas Operator | Feb 2026 |
| 6333 | Lakeshore Operating, LLC | Wichita, KS 67203 | Oil & Gas Operator | Feb 2026 |
| 6334 | Lakewood Energy LLC | Dallas, TX 75214 | Oil & Gas Operator | Feb 2026 |
| 6335 | Lakewood Operating, LTD. | Midland, TX 79702 | Oil & Gas Operator | Feb 2026 |
| 6336 | Lakota Energy, LTD. | Paradise, TX 76073 | Oil & Gas Operator | Feb 2026 |
| 6337 | Laloc | Aspermont, TX 79502 | Oil & Gas Operator | Sep 2025 |
| 6338 | Lama Energy, L.L.C. | Midland, TX 79710 | Oil & Gas Operator | May 2024 |
| 6339 | Lamar Energy | Nocona, TX 76255 | Oil Operator | Feb 2026 |
| 6340 | Lamar Oil & Gas, Inc. | Corpus Chrsti, TX 78413 | Oil & Gas Operator | Feb 2026 |
| 6341 | Lamar Oil Company | Nocona, TX 76255 | Oil & Gas Operator | Oct 2015 |
| 6342 | Lamay Corporation | Rosenberg, TX 77471 | Oil & Gas Operator | Feb 2026 |
| 6343 | Lamb & Mize | Azle, TX 76020 | Oil & Gas Operator | Feb 2026 |
| 6344 | Lamb, James L., Jr. | Austin, TX 78750 | Oil & Gas Operator | Mar 2016 |
| 6345 | Lambeck Petroleum, LLC | Stockdale, TX 78160 | Oil Operator | Feb 2026 |
| 6346 | Lamco Oil, LLC | Nocona, TX 76255 | Oil & Gas Operator | Feb 2026 |
| 6347 | Lamesa Crude | Abilene, TX 79605 | Oil & Gas Operator | Feb 2015 |
| 6348 | Lampert Exploration Corporation | Dallas, TX 75206 | Oil & Gas Operator | Mar 2008 |
| 6349 | Lance Exploration Company | Fort Worth, TX 76102 | Oil & Gas Operator | Jul 1994 |
| 6350 | Lance Leasing | Odessa, TX 79765 | Oil Operator | Feb 2026 |
| 6351 | Lance Oil & Gas Productions | Bloomburg, TX 75556 | Oil & Gas Operator | Feb 2026 |
| 6352 | Lancer Petroleum Corporation | Irving, TX 75014 | Oil & Gas Operator | Feb 2014 |
| 6353 | Lanco Oil & Gas, Inc. | Richland, TX 76681 | Oil & Gas Operator | Jan 1998 |
| 6354 | Land, Cleatus H. Estate | Seguin, TX 78155 | Oil & Gas Operator | Mar 2001 |
| 6355 | Landmark Drilling, L.L.C. | Waskom, TX 75692 | Oil Operator | Feb 2026 |
| 6356 | Landmark Exploration Inc. | Caldwell, TX 77836 | Oil & Gas Operator | Feb 2026 |
| 6357 | Landmark Ip, LLC | Houston, TX 77002 | Oil & Gas Operator | Feb 2026 |
| 6358 | Landmark Production Company | MC Gregor, TX 76657 | Oil & Gas Operator | Oct 2010 |
| 6359 | Landmaster Partners, Inc. | Abilene, TX 79601 | Oil & Gas Operator | Feb 2026 |
| 6360 | Landmen Of Texas | Hondo, TX 78861 | Oil Operator | Feb 2007 |
| 6361 | Landmen Of Texas, Inc. | Hondo, TX 78861 | Oil Operator | Dec 2016 |
| 6362 | Landor Oil Co. | San Marcos, TX 78666 | Oil Operator | Feb 2026 |
| 6363 | Landreth, Robert E. | Midland, TX 79701 | Oil & Gas Operator | Feb 2026 |
| 6364 | Landrick O & G Operating, LLC | Midland, TX 79705 | Oil & Gas Operator | Feb 2026 |
| 6365 | Landrum Petroleum Co., Inc. | Burkburnett, TX 76354 | Oil Operator | Mar 2008 |
| 6366 | Landrum West, Inc. | Burkburnett, TX 76354 | Oil & Gas Operator | Dec 1997 |
| 6367 | Landrum, W. A. | Byers, TX 76357 | Oil & Gas Operator | Apr 2002 |
| 6368 | Lane Operating Company | Wichita Falls, TX 76301 | Oil & Gas Operator | Feb 2026 |
| 6369 | Lane, Lloyd L. | Buffalo, TX 75831 | Oil Operator | Feb 2026 |
| 6370 | Laneer Resources Company | Abilene, TX 79608 | Oil & Gas Operator | Feb 2026 |
| 6371 | Lanexco, Inc. | Sealy, TX 77474 | Oil & Gas Operator | Feb 2026 |
| 6372 | Langford & Brigham Operating LLC | Austin, TX 78730 | Oil & Gas Operator | Feb 2026 |
| 6373 | Langford Production Company, LLC | Haskell, TX 79521 | Oil & Gas Operator | Feb 2026 |
| 6374 | Langford, G. E. | Abilene, TX 79604 | Oil & Gas Operator | Jan 2002 |
| 6375 | Langford, R. C. Operating Co. | Rule, TX 79547 | Oil & Gas Operator | Mar 1994 |
| 6376 | Langham Petroleum Exp Co, LLC | Houston, TX 77056 | Oil & Gas Operator | Jul 2002 |
| 6377 | Langham Petroleum Expl. Corp. | Houston, TX 77056 | Oil & Gas Operator | Dec 2009 |
| 6378 | Lankford Oil Co. | Weatherford, TX 76086 | Oil & Gas Operator | Jul 1999 |
| 6379 | Lankford, Dan L. | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 6380 | Lapco Oil & Gas Company | Houston, TX 77069 | Oil & Gas Operator | Oct 2015 |
| 6381 | Lapetco Inc | Plano, TX 75093 | Oil & Gas Operator | Aug 2024 |
| 6382 | Lapis Operating, Inc. | Houston, TX 77042 | Oil & Gas Operator | Jul 2015 |
| 6383 | Laquey, E. C. | Refugio, TX 78377 | Oil & Gas Operator | Aug 2003 |
| 6384 | Larae Operations | Luling, TX 78648 | Oil Operator | Feb 2026 |
| 6385 | Larance Engineering Company | Wichita Falls, TX 76301 | Oil & Gas Operator | Jan 1996 |
| 6386 | Laredo Energy | Houston, TX 77002 | Oil & Gas Operator | Jun 2016 |
| 6387 | Laredo Energy Operating, LLC | Houston, TX 77024 | Oil & Gas Operator | Nov 2022 |
| 6388 | Laredo Energy, LP | Houston, TX 77040 | Oil & Gas Operator | Oct 2003 |
| 6389 | Laredo Petroleum - Dallas, Inc. | Tulsa, OK 74119 | Oil & Gas Operator | Nov 2014 |
| 6390 | Laredo Petroleum Inc | Tulsa, OK 74120 | Oil & Gas Operator | Mar 2023 |
| 6391 | Large Operating LLC | Stinnett, TX 79083 | Oil & Gas Operator | Feb 2026 |
| 6392 | Largo Oil Company | Longview, TX 75606 | Oil & Gas Operator | Feb 2026 |
| 6393 | Lariat Land & Exploration, Inc. | Abilene, TX 79608 | Oil & Gas Operator | Feb 2026 |
| 6394 | Lariat Resources, LLC | Fort Worth, TX 76109 | Oil & Gas Operator | May 2022 |
| 6395 | Lario Oil & Gas Company | Odessa, TX 79762 | Oil & Gas Operator | Feb 2026 |
| 6396 | Larison Oil Company | Katy, TX 77494 | Oil & Gas Operator | Feb 2026 |
| 6397 | Laroca Resources, LTD | Austin, TX 78709 | Oil & Gas Operator | Feb 2026 |
| 6398 | Laroco LLP | Woodsboro, TX 78393 | Oil & Gas Operator | Mar 2008 |
| 6399 | Laron Oil Corporation | Seguin, TX 78155 | Oil & Gas Operator | Jul 1997 |
| 6400 | Larron Energy Corporation | New Braunfels, TX 78132 | Oil & Gas Operator | Mar 2015 |