| 6301 | Laredo Energy, LP | Houston, TX 77040 | Oil & Gas Operator | Oct 2003 |
| 6302 | Laredo Petroleum - Dallas, Inc. | Tulsa, OK 74119 | Oil & Gas Operator | Nov 2014 |
| 6303 | Laredo Petroleum Inc | Tulsa, OK 74120 | Oil & Gas Operator | Mar 2023 |
| 6304 | Large Operating LLC | Stinnett, TX 79083 | Oil & Gas Operator | Dec 2025 |
| 6305 | Largo Oil Company | Longview, TX 75606 | Oil & Gas Operator | Dec 2025 |
| 6306 | Lariat Land & Exploration, Inc. | Abilene, TX 79608 | Oil & Gas Operator | Dec 2025 |
| 6307 | Lariat Resources, LLC | Fort Worth, TX 76109 | Oil & Gas Operator | May 2022 |
| 6308 | Lario Oil & Gas Company | Odessa, TX 79762 | Oil & Gas Operator | Dec 2025 |
| 6309 | Larison Oil Company | Katy, TX 77494 | Oil & Gas Operator | Dec 2025 |
| 6310 | Laroca Resources, LTD | Austin, TX 78709 | Oil & Gas Operator | Dec 2025 |
| 6311 | Laroco LLP | Woodsboro, TX 78393 | Oil & Gas Operator | Mar 2008 |
| 6312 | Laron Oil Corporation | Seguin, TX 78155 | Oil & Gas Operator | Jul 1997 |
| 6313 | Larron Energy Corporation | New Braunfels, TX 78132 | Oil & Gas Operator | Mar 2015 |
| 6314 | Larry Oil, Inc. | Albany, TX 76430 | Oil & Gas Operator | Nov 2001 |
| 6315 | Larson, Perry L Operating Co Inc | Dallas, TX 75382 | Oil & Gas Operator | Feb 2021 |
| 6316 | Las Animas Production Company | Midland, TX 79705 | Oil & Gas Operator | Mar 1995 |
| 6317 | Las Colinas Oil Corp. | Irving, TX 75062 | Oil & Gas Operator | Mar 2015 |
| 6318 | Lasalle Marine Corporation | Houston, TX 77056 | Oil Operator | Aug 2003 |
| 6319 | Lasater & Co, Inc. | Spearman, TX 79081 | Oil & Gas Operator | Dec 2025 |
| 6320 | Last Chance Operating LLC | Wortham, TX 76693 | Oil Operator | Dec 2025 |
| 6321 | Last Dollar LLC | Big Lake, TX 76932 | Oil & Gas Operator | Dec 2025 |
| 6322 | Last Mile Production, LLC | Southlake, TX 76092 | Oil & Gas Operator | Dec 2025 |
| 6323 | Last Run LLC | Rillito, AZ 85246 | Oil & Gas Operator | May 2020 |
| 6324 | Latex Petroleum Corp. | Houston, TX 77090 | Oil & Gas Operator | Aug 2012 |
| 6325 | Latexo Resources, Inc. | Austin, TX 78701 | Oil & Gas Operator | Feb 1997 |
| 6326 | Latigo (Texas), LLC | Tulsa, OK 74119 | Oil & Gas Operator | Dec 2025 |
| 6327 | Latigo Oil & Gas, Inc. | Woodward, OK 73801 | Oil & Gas Operator | Nov 2025 |
| 6328 | Latigo Petroleum LLC | Pampa, TX 79066 | Oil & Gas Operator | Dec 2025 |
| 6329 | Latigo Petroleum Texas, LP | Houston, TX 77002 | Oil & Gas Operator | Feb 2009 |
| 6330 | Latigo Petroleum, Inc. | Tulsa, OK 74119 | Oil & Gas Operator | Oct 2025 |
| 6331 | Latimer, D. Gail Enterprises,Inc | Snyder, TX 79550 | Oil & Gas Operator | Jul 2004 |
| 6332 | Laughlin, W. M. Estate | Premont, TX 78375 | Oil & Gas Operator | Jun 2003 |
| 6333 | Laurel Fuel Company | Jackson, MS 39206 | Oil & Gas Operator | Dec 1996 |
| 6334 | Lavaca Canyon Petroleum LLC | Houston, TX 77060 | Oil & Gas Operator | Dec 2025 |
| 6335 | Lavaca River Operating Co., LLC | The Woodlands, TX 77381 | Oil & Gas Operator | Dec 2025 |
| 6336 | Lavanco Energy, Inc. | San Angelo, TX 76906 | Oil & Gas Operator | Feb 2006 |
| 6337 | Lavanco Energy, LTD. | San Angelo, TX 76906 | Oil & Gas Operator | Feb 2024 |
| 6338 | Lawbar Petroleum, Inc. | Tuleta, TX 78162 | Oil & Gas Operator | Aug 2003 |
| 6339 | Lawco Osage Operating, LLC | Bentonville, AR 72712 | Oil & Gas Operator | Dec 2025 |
| 6340 | Lawlis Oil Company | Hamlin, TX 79520 | Oil & Gas Operator | Dec 2025 |
| 6341 | Lawrence Energy Company | Abilene, TX 79602 | Oil & Gas Operator | Dec 2025 |
| 6342 | Lawrence, C. F. & Assoc. Inc. | Lubbock, TX 79401 | Oil & Gas Operator | Dec 2025 |
| 6343 | Laws Exploration LLC | Mineral Wells, TX 76067 | Oil & Gas Operator | Dec 2025 |
| 6344 | Lawson Petroleum Co. | Tulsa, OK 74103 | Oil & Gas Operator | Nov 2009 |
| 6345 | Lawton, Jack Inc. | Sulphur, LA 70663 | Oil & Gas Operator | Dec 1995 |
| 6346 | Lay, J. D. | Lockhart, TX 78644 | Oil & Gas Operator | May 1997 |
| 6347 | Lay, Warren Leon | Lockhart, TX 78644 | Oil & Gas Operator | Aug 2023 |
| 6348 | Layline Energy I LLC | Houston, TX 77024 | Oil & Gas Operator | Dec 2019 |
| 6349 | Layline Petroleum I, LLC | Houston, TX 77024 | Oil & Gas Operator | May 2013 |
| 6350 | Layton Energy Inc. | Houston, TX 77027 | Oil & Gas Operator | Dec 2025 |
| 6351 | Layton Enterprises, Inc. | Lubbock, TX 79423 | Oil & Gas Operator | Apr 2007 |
| 6352 | Lazarus Operating, LLC | Kilgore, TX 75663 | Oil Operator | Dec 2025 |
| 6353 | LBN Oil Co., Inc. | Corpus Chrsti, TX 78411 | Oil & Gas Operator | May 1998 |
| 6354 | Lbo Energy, Inc. | Kentfield, CA 94914 | Gas Operator | Nov 2002 |
| 6355 | LC Operating, LLC | Burkburnett, TX 76354 | Oil & Gas Operator | Dec 2025 |
| 6356 | LCT Energy, LP | Lewisville, AR 71845 | Oil & Gas Operator | Dec 2025 |
| 6357 | LCX Energy, LLC | Midland, TX 79701 | Oil & Gas Operator | Jan 2010 |
| 6358 | LDF Energy, LLC | Midland, TX 79707 | Oil & Gas Operator | Dec 2025 |
| 6359 | LDX Operating Company, LLC. | Amarillo, TX 79102 | Oil & Gas Operator | Dec 2025 |
| 6360 | Le Bas Operating Company, Inc. | Giddings, TX 78942 | Oil & Gas Operator | Mar 2000 |
| 6361 | Le Norman Energy Corporation | Duncan, OK 73534 | Oil & Gas Operator | Nov 2014 |
| 6362 | Le Norman Operating LLC | Oklahoma City, OK 73142 | Oil & Gas Operator | Nov 2019 |
| 6363 | Leach, D.L.,Jr. | Edna, TX 77957 | Gas Operator | Oct 2007 |
| 6364 | Leading Edge Energy LLC | San Antonio, TX 78205 | Oil Operator | Dec 2025 |
| 6365 | Leahy Oil, LLC | Arlington, TX 76006 | Oil Operator | Dec 2025 |
| 6366 | Lease Holders Acquisitions LLC | Yukon, OK 73099 | Gas Operator | Dec 2025 |
| 6367 | Lebow, Marvin E. | Tulsa, OK 74135 | Oil & Gas Operator | Jun 1997 |
| 6368 | Leclair Operating Co., Inc. | Abilene, TX 79602 | Oil & Gas Operator | Dec 2025 |
| 6369 | Leclair Operating, L.L.C. | Abilene, TX 79602 | Oil & Gas Operator | Dec 2025 |
| 6370 | Ledbetter, Jerald D. Estate Of | Breckenridge, TX 76424 | Oil & Gas Operator | Dec 2025 |
| 6371 | Ledbetter, Jerald D. Oil Company | Breckenridge, TX 76424 | Oil & Gas Operator | Jan 2007 |
| 6372 | Ledbetter, Morris | Abilene, TX 79605 | Oil & Gas Operator | Jun 2005 |
| 6373 | Ledbetter, O. H. | Albany, TX 76430 | Oil & Gas Operator | Mar 1997 |
| 6374 | Ledger Operating Corporation | Abilene, TX 79601 | Oil Operator | Dec 2025 |
| 6375 | Lee Brothers Oil Co. | Houston, TX 77056 | Oil & Gas Operator | Mar 2008 |
| 6376 | Lee Production Co. | Monahans, TX 79756 | Oil & Gas Operator | Dec 2025 |
| 6377 | Leede Oil & Gas Inc. | Greenwood VLG, CO 80111 | Oil & Gas Operator | Aug 2003 |
| 6378 | Leejan Oil Company | Amarillo, TX 79109 | Oil & Gas Operator | Dec 2025 |
| 6379 | Leeper Oil Exp. & Prod. Inc. | Midland, TX 79701 | Oil & Gas Operator | Sep 2005 |
| 6380 | Leexus Oil & Gas L.L.P. | Giddings, TX 78942 | Oil & Gas Operator | Jun 2008 |
| 6381 | Leexus Oil LLC | Giddings, TX 78942 | Oil & Gas Operator | Dec 2025 |
| 6382 | Leexus Operating Company | Austin, TX 78734 | Oil & Gas Operator | Aug 2007 |
| 6383 | Leffel'S, Inc. | Abilene, TX 79601 | Oil & Gas Operator | Jun 2020 |
| 6384 | Lefforge & Klein | Amarillo, TX 79114 | Gas Operator | Jun 1997 |
| 6385 | Left Behind Recovery, LLC | Luling, TX 78648 | Oil & Gas Operator | Dec 2025 |
| 6386 | Left-Hand Ranch, LLC | Helotes, TX 78023 | Oil Operator | Dec 2025 |
| 6387 | Legacy Corporation, The | Cedar Park, TX 78613 | Oil & Gas Operator | Jun 2004 |
| 6388 | Legacy Energy Services | Jourdanton, TX 78026 | Oil Operator | Dec 2025 |
| 6389 | Legacy Exploration, LLC I | Dallas, TX 75201 | Oil & Gas Operator | Dec 2025 |
| 6390 | Legacy Oil & Gas, Inc. | Portland, TX 78374 | Oil & Gas Operator | Dec 2025 |
| 6391 | Legacy Operating Company, LLC | Dallas, TX 75205 | Oil Operator | Jun 2024 |
| 6392 | Legacy Petroleum Corporation | Dallas, TX 75225 | Oil & Gas Operator | Mar 2019 |
| 6393 | Legacy Reserves Operating LP | Denver, CO 80201 | Oil & Gas Operator | Dec 2025 |
| 6394 | Legado Gulf Coast, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Apr 2010 |
| 6395 | Legado Midcon LLC | The Woodlands, TX 77380 | Oil & Gas Operator | May 2010 |
| 6396 | Legado Permian, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | May 2013 |
| 6397 | Legend Energy Texas, LLC | Arlington, TX 76002 | Oil & Gas Operator | Dec 2025 |
| 6398 | Legend Natural Gas II, LP | Houston, TX 77094 | Oil & Gas Operator | Feb 2015 |
| 6399 | Legend Natural Gas III, LP | Houston, TX 77094 | Oil & Gas Operator | Feb 2015 |
| 6400 | Legend Natural Gas IV, LP | Houston, TX 77094 | Oil & Gas Operator | Feb 2015 |