| 6401 | Larry Oil, Inc. | Albany, TX 76430 | Oil & Gas Operator | Nov 2001 |
| 6402 | Larson, Perry L Operating Co Inc | Dallas, TX 75382 | Oil & Gas Operator | Feb 2021 |
| 6403 | Las Animas Production Company | Midland, TX 79705 | Oil & Gas Operator | Mar 1995 |
| 6404 | Las Colinas Oil Corp. | Irving, TX 75062 | Oil & Gas Operator | Mar 2015 |
| 6405 | Lasalle Marine Corporation | Houston, TX 77056 | Oil Operator | Aug 2003 |
| 6406 | Lasater & Co, Inc. | Spearman, TX 79081 | Oil & Gas Operator | Feb 2026 |
| 6407 | Last Chance Operating LLC | Wortham, TX 76693 | Oil Operator | Nov 2025 |
| 6408 | Last Dollar LLC | Big Lake, TX 76932 | Oil & Gas Operator | Feb 2026 |
| 6409 | Last Mile Production, LLC | Southlake, TX 76092 | Oil & Gas Operator | Feb 2026 |
| 6410 | Last Run LLC | Rillito, AZ 85246 | Oil & Gas Operator | May 2020 |
| 6411 | Latex Petroleum Corp. | Houston, TX 77090 | Oil & Gas Operator | Aug 2012 |
| 6412 | Latexo Resources, Inc. | Austin, TX 78701 | Oil & Gas Operator | Feb 1997 |
| 6413 | Latigo (Texas), LLC | Tulsa, OK 74119 | Oil & Gas Operator | Feb 2026 |
| 6414 | Latigo Oil & Gas, Inc. | Woodward, OK 73801 | Oil & Gas Operator | Dec 2025 |
| 6415 | Latigo Petroleum LLC | Pampa, TX 79066 | Oil & Gas Operator | Feb 2026 |
| 6416 | Latigo Petroleum Texas, LP | Houston, TX 77002 | Oil & Gas Operator | Feb 2009 |
| 6417 | Latigo Petroleum, Inc. | Tulsa, OK 74119 | Oil & Gas Operator | Nov 2025 |
| 6418 | Latimer, D. Gail Enterprises,Inc | Snyder, TX 79550 | Oil & Gas Operator | Jul 2004 |
| 6419 | Laughlin, W. M. Estate | Premont, TX 78375 | Oil & Gas Operator | Jun 2003 |
| 6420 | Laurel Fuel Company | Jackson, MS 39206 | Oil & Gas Operator | Dec 1996 |
| 6421 | Lavaca Canyon Petroleum LLC | Houston, TX 77060 | Oil & Gas Operator | Feb 2026 |
| 6422 | Lavaca River Operating Co., LLC | The Woodlands, TX 77381 | Oil & Gas Operator | Feb 2026 |
| 6423 | Lavanco Energy, Inc. | San Angelo, TX 76906 | Oil & Gas Operator | Feb 2006 |
| 6424 | Lavanco Energy, LTD. | San Angelo, TX 76906 | Oil & Gas Operator | Feb 2024 |
| 6425 | Lawbar Petroleum, Inc. | Tuleta, TX 78162 | Oil & Gas Operator | Aug 2003 |
| 6426 | Lawco Osage Operating, LLC | Bentonville, AR 72712 | Oil & Gas Operator | Feb 2026 |
| 6427 | Lawlis Oil Company | Hamlin, TX 79520 | Oil & Gas Operator | Feb 2026 |
| 6428 | Lawrence Energy Company | Abilene, TX 79602 | Oil & Gas Operator | Feb 2026 |
| 6429 | Lawrence, C. F. & Assoc. Inc. | Lubbock, TX 79401 | Oil & Gas Operator | Feb 2026 |
| 6430 | Laws Exploration LLC | Mineral Wells, TX 76067 | Oil & Gas Operator | Feb 2026 |
| 6431 | Lawson Petroleum Co. | Tulsa, OK 74103 | Oil & Gas Operator | Nov 2009 |
| 6432 | Lawton, Jack Inc. | Sulphur, LA 70663 | Oil & Gas Operator | Dec 1995 |
| 6433 | Lay, J. D. | Lockhart, TX 78644 | Oil & Gas Operator | May 1997 |
| 6434 | Lay, Warren Leon | Lockhart, TX 78644 | Oil & Gas Operator | Aug 2023 |
| 6435 | Layline Energy I LLC | Houston, TX 77024 | Oil & Gas Operator | Dec 2019 |
| 6436 | Layline Petroleum I, LLC | Houston, TX 77024 | Oil & Gas Operator | May 2013 |
| 6437 | Layton Energy Inc. | Houston, TX 77027 | Oil & Gas Operator | Feb 2026 |
| 6438 | Layton Enterprises, Inc. | Lubbock, TX 79423 | Oil & Gas Operator | Apr 2007 |
| 6439 | Lazarus Operating, LLC | Kilgore, TX 75663 | Oil Operator | Feb 2026 |
| 6440 | LBN Oil Co., Inc. | Corpus Chrsti, TX 78411 | Oil & Gas Operator | May 1998 |
| 6441 | Lbo Energy, Inc. | Kentfield, CA 94914 | Gas Operator | Nov 2002 |
| 6442 | LC Operating, LLC | Burkburnett, TX 76354 | Oil & Gas Operator | Feb 2026 |
| 6443 | LCT Energy, LP | Lewisville, AR 71845 | Oil & Gas Operator | Feb 2026 |
| 6444 | LCX Energy, LLC | Midland, TX 79701 | Oil & Gas Operator | Jan 2010 |
| 6445 | LDF Energy, LLC | Midland, TX 79707 | Oil & Gas Operator | Feb 2026 |
| 6446 | LDX Operating Company, LLC. | Amarillo, TX 79102 | Oil & Gas Operator | Feb 2026 |
| 6447 | Le Bas Operating Company, Inc. | Giddings, TX 78942 | Oil & Gas Operator | Mar 2000 |
| 6448 | Le Norman Energy Corporation | Duncan, OK 73534 | Oil & Gas Operator | Nov 2014 |
| 6449 | Le Norman Operating LLC | Oklahoma City, OK 73142 | Oil & Gas Operator | Nov 2019 |
| 6450 | Leach, D.L.,Jr. | Edna, TX 77957 | Gas Operator | Oct 2007 |
| 6451 | Leading Edge Energy LLC | San Antonio, TX 78205 | Oil Operator | Feb 2026 |
| 6452 | Leahy Oil, LLC | Arlington, TX 76006 | Oil Operator | Feb 2026 |
| 6453 | Lease Holders Acquisitions LLC | Yukon, OK 73099 | Gas Operator | Feb 2026 |
| 6454 | Lebow, Marvin E. | Tulsa, OK 74135 | Oil & Gas Operator | Jun 1997 |
| 6455 | Leclair Operating Co., Inc. | Abilene, TX 79602 | Oil & Gas Operator | Feb 2026 |
| 6456 | Leclair Operating, L.L.C. | Abilene, TX 79602 | Oil & Gas Operator | Feb 2026 |
| 6457 | Ledbetter, Jerald D. Estate Of | Breckenridge, TX 76424 | Oil & Gas Operator | Feb 2026 |
| 6458 | Ledbetter, Jerald D. Oil Company | Breckenridge, TX 76424 | Oil & Gas Operator | Jan 2007 |
| 6459 | Ledbetter, Morris | Abilene, TX 79605 | Oil & Gas Operator | Jun 2005 |
| 6460 | Ledbetter, O. H. | Albany, TX 76430 | Oil & Gas Operator | Mar 1997 |
| 6461 | Ledger Operating Corporation | Abilene, TX 79601 | Oil Operator | Feb 2026 |
| 6462 | Lee Brothers Oil Co. | Houston, TX 77056 | Oil & Gas Operator | Mar 2008 |
| 6463 | Lee Production Co. | Monahans, TX 79756 | Oil & Gas Operator | Feb 2026 |
| 6464 | Leede Oil & Gas Inc. | Greenwood VLG, CO 80111 | Oil & Gas Operator | Aug 2003 |
| 6465 | Leejan Oil Company | Amarillo, TX 79109 | Oil & Gas Operator | Feb 2026 |
| 6466 | Leeper Oil Exp. & Prod. Inc. | Midland, TX 79701 | Oil & Gas Operator | Sep 2005 |
| 6467 | Leexus Oil & Gas L.L.P. | Giddings, TX 78942 | Oil & Gas Operator | Jun 2008 |
| 6468 | Leexus Oil LLC | Giddings, TX 78942 | Oil & Gas Operator | Feb 2026 |
| 6469 | Leexus Operating Company | Austin, TX 78734 | Oil & Gas Operator | Aug 2007 |
| 6470 | Leffel'S, Inc. | Abilene, TX 79601 | Oil & Gas Operator | Jun 2020 |
| 6471 | Lefforge & Klein | Amarillo, TX 79114 | Gas Operator | Jun 1997 |
| 6472 | Left Behind Recovery, LLC | Luling, TX 78648 | Oil & Gas Operator | Feb 2026 |
| 6473 | Left-Hand Ranch, LLC | Helotes, TX 78023 | Oil Operator | Feb 2026 |
| 6474 | Legacy Corporation, The | Cedar Park, TX 78613 | Oil & Gas Operator | Jun 2004 |
| 6475 | Legacy Energy Services | Jourdanton, TX 78026 | Oil Operator | Feb 2026 |
| 6476 | Legacy Exploration, LLC I | Dallas, TX 75201 | Oil & Gas Operator | Feb 2026 |
| 6477 | Legacy Oil & Gas, Inc. | Portland, TX 78374 | Oil & Gas Operator | Feb 2026 |
| 6478 | Legacy Operating Company, LLC | Dallas, TX 75205 | Oil Operator | Jun 2024 |
| 6479 | Legacy Petroleum Corporation | Dallas, TX 75225 | Oil & Gas Operator | Mar 2019 |
| 6480 | Legacy Reserves Operating LP | Denver, CO 80201 | Oil & Gas Operator | Feb 2026 |
| 6481 | Legado Gulf Coast, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Apr 2010 |
| 6482 | Legado Midcon, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | May 2010 |
| 6483 | Legado Permian, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | May 2013 |
| 6484 | Legend Energy Texas, LLC | Arlington, TX 76002 | Oil & Gas Operator | Feb 2026 |
| 6485 | Legend Natural Gas II, LP | Houston, TX 77094 | Oil & Gas Operator | Feb 2015 |
| 6486 | Legend Natural Gas III, LP | Houston, TX 77094 | Oil & Gas Operator | Feb 2015 |
| 6487 | Legend Natural Gas IV, LP | Houston, TX 77094 | Oil & Gas Operator | Feb 2015 |
| 6488 | Legend Natural Gas, LP | Houston, TX 77084 | Oil & Gas Operator | Aug 2004 |
| 6489 | Legend Operating, LLC | Dallas, TX 75219 | Oil & Gas Operator | May 2010 |
| 6490 | Leggett Oil Company | Dallas, TX 75379 | Oil & Gas Operator | Oct 1999 |
| 6491 | Lehnertz, G. M. | Tyler, TX 75702 | Oil & Gas Operator | Dec 1998 |
| 6492 | Lehnertz-Faulkner, Inc. | Tyler, TX 75701 | Oil & Gas Operator | Feb 2023 |
| 6493 | Leicht, Cecil | Streetman, TX 75859 | Oil & Gas Operator | Feb 1998 |
| 6494 | Leigh Operating Co | Dallas, TX 75205 | Oil & Gas Operator | Mar 2008 |
| 6495 | Leighty, Roger Operator | Lawrenceville, IL 62439 | Oil & Gas Operator | Oct 1997 |
| 6496 | Lejan, Inc. | Pampa, TX 79066 | Oil & Gas Operator | Feb 2026 |
| 6497 | Lem Operating Co., Inc. | Colorado City, TX 79512 | Oil & Gas Operator | Nov 2012 |
| 6498 | Lemay Oil Company | Snyder, TX 79549 | Oil & Gas Operator | Jun 2002 |
| 6499 | Lemley Oil Corporation | Sulphur, OK 73086-9316 | Oil & Gas Operator | Aug 2025 |
| 6500 | Lemon, Richard F. Jr. | Carrollton, TX 75006 | Oil & Gas Operator | Feb 2026 |