| 5401 | Hugoton Energy Corporation | Oklahoma City, OK 73113 | Oil & Gas Operator | Dec 2019 |
| 5402 | Hugoton Operating Company, Inc. | Dallas, TX 75240 | Oil & Gas Operator | Feb 2026 |
| 5403 | Hugus Investment Company, Inc. | Tyler, TX 75711 | Oil & Gas Operator | Feb 2026 |
| 5404 | Huisache E & P Company, LLC | San Antonio, TX 78205 | Oil & Gas Operator | Mar 2017 |
| 5405 | Hulen Operating Company | Nichols Hill, OK 73116 | Oil & Gas Operator | Feb 2026 |
| 5406 | Hull Oil Co. | Wichita Falls, TX 76308 | Oil & Gas Operator | Sep 2021 |
| 5407 | Hulse, J. T. | Archer City, TX 76351 | Oil & Gas Operator | Feb 2026 |
| 5408 | Hulse, Tommy P. | Archer City, TX 76351 | Oil & Gas Operator | Feb 2009 |
| 5409 | Hulsey Larry O & Co | Graham, TX 76046 | Oil & Gas Operator | Jun 2012 |
| 5410 | Hulsey Oil Company | Dallas, TX 75205 | Oil & Gas Operator | Aug 1999 |
| 5411 | Humak Processors, Inc. | Tyler, TX 75710 | Oil & Gas Operator | Aug 2005 |
| 5412 | Humber Oil Company | Albany, TX 76430 | Oil & Gas Operator | Feb 2026 |
| 5413 | Humble Oil & Refining Co. | Houston, TX 77252 | Oil & Gas Operator | Jan 2000 |
| 5414 | Humedel Land & Minerals, Inc. | Jourdanton, TX 78026 | Oil & Gas Operator | Mar 2008 |
| 5415 | Hump Oil, Inc. | Kerrville, TX 78029 | Oil & Gas Operator | Feb 2026 |
| 5416 | Humphrey, Thos.D. Oil Prop.,Inc. | Gainesville, TX 76241 | Oil & Gas Operator | Aug 1999 |
| 5417 | Humphrey-Bashford Oil, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Sep 2010 |
| 5418 | Hunt Cimarron LTD. Partnership | Roswell, NM 88202 | Oil & Gas Operator | Feb 2026 |
| 5419 | Hunt Industries, LTD. | Dallas, TX 75201 | Oil & Gas Operator | Nov 2000 |
| 5420 | Hunt Oil Company | Dallas, TX 75201 | Oil & Gas Operator | Feb 2026 |
| 5421 | Hunt Operating, LLC | Jacksboro, TX 76458 | Oil & Gas Operator | Feb 2026 |
| 5422 | Hunt Petroleum (Aec), Inc. | Dallas, TX 75201 | Oil & Gas Operator | Nov 2008 |
| 5423 | Hunt Petroleum Corp. | Dallas, TX 75201 | Oil & Gas Operator | Nov 2008 |
| 5424 | Hunt, Hassie Exploration Company | Dallas, TX 75201 | Oil & Gas Operator | Nov 2008 |
| 5425 | Hunt, Phil | San Angelo, TX 76904 | Oil & Gas Operator | Feb 2026 |
| 5426 | Hunt, WM. Herbert, Trust Est. | Dallas, TX 75201 | Oil & Gas Operator | Sep 1998 |
| 5427 | Hunter & Hedrick Production, Inc | Corpus Chrsti, TX 78403 | Oil & Gas Operator | Dec 1995 |
| 5428 | Hunter & McDonald | Wichita Falls, TX 76309 | Oil & Gas Operator | Jul 2001 |
| 5429 | Hunter Brothers | Wichita Falls, TX 76302 | Oil & Gas Operator | Jul 2007 |
| 5430 | Hunter Energy, Inc. | Hurst, TX 76053 | Oil & Gas Operator | Feb 2026 |
| 5431 | Hunter Oil & Gas Co. | Bangs, TX 76823 | Oil & Gas Operator | Feb 2026 |
| 5432 | Hunter Oil Corporation | Gruver, TX 79040 | Gas Operator | Feb 2026 |
| 5433 | Hunter Petroleum Inc. | Alice, TX 78333 | Oil & Gas Operator | May 2014 |
| 5434 | Hunter, Rocquelle | Coleman, TX 76834 | Oil Operator | Feb 2026 |
| 5435 | Hunters Creek Oil & Gas | Houston, TX 77042 | Oil & Gas Operator | Feb 2026 |
| 5436 | Huntington Energy LLC | Nichols Hill, OK 73116 | Oil & Gas Operator | Feb 2026 |
| 5437 | Huntington Resources Inc | Tulsa, OK 74103 | Oil & Gas Operator | Oct 2006 |
| 5438 | Huntland Properties, LTD. | Santa Anna, TX 76878 | Oil & Gas Operator | Feb 2026 |
| 5439 | Huntwood Resources, LLC | Huntsville, TX 77340 | Oil Operator | Feb 2026 |
| 5440 | Hurd Ent.LTD/U.S.Enercorp,LLC | San Antonio, TX 78209 | Oil & Gas Operator | Aug 2002 |
| 5441 | Hurd Enterprises, LTD. | San Antonio, TX 78209 | Oil & Gas Operator | Feb 2026 |
| 5442 | Hurley Petroleum Corporation | Baton Rouge, LA 70821 | Oil & Gas Operator | Feb 2000 |
| 5443 | Hurricane Oil And Gas Co., Inc. | Houston, TX 77057 | Oil & Gas Operator | Mar 2008 |
| 5444 | Hurst Oil & Gas, Inc. | Hillsboro, TX 76645 | Oil & Gas Operator | Dec 2024 |
| 5445 | Husfeld, Rose Marie | Bowie, TX 76230 | Oil & Gas Operator | Aug 2017 |
| 5446 | Husfeld, Walter H. | Bowie, TX 76230 | Oil & Gas Operator | Jun 2007 |
| 5447 | Huson Corp. | Albany, TX 76430 | Oil & Gas Operator | May 2003 |
| 5448 | Huston Minerals LP | Albany, TX 76430 | Oil & Gas Operator | Feb 2026 |
| 5449 | Huston Oil | Woodson, TX 76491 | Oil & Gas Operator | Oct 2010 |
| 5450 | HW Operating, LLC | Wichita Falls, TX 76308 | Oil & Gas Operator | Feb 2026 |
| 5451 | HWH Production, LLC | Muenster, TX 76252 | Oil Operator | Feb 2026 |
| 5452 | Hy-Tech, Inc. | Pampa, TX 79066 | Oil & Gas Operator | Feb 2017 |
| 5453 | Hyalite Energy Corporation | Pampa, TX 79066 | Oil & Gas Operator | Oct 2025 |
| 5454 | Hybrid Operating, Incorporated | Carlsbad, CA 92009 | Oil & Gas Operator | Feb 2026 |
| 5455 | Hydroc Oil Company | Borger, TX 79007 | Oil & Gas Operator | May 2012 |
| 5456 | Hydrocarbon Horizons, Inc. | Corpus Chrsti, TX 78473 | Oil & Gas Operator | Jun 2023 |
| 5457 | Hydrocarbon Lease Management LTD | Addison, TX 75001 | Oil & Gas Operator | Jul 2002 |
| 5458 | Hydrocarbon Management, Inc. | San Antonio, TX 78216 | Oil & Gas Operator | Dec 1996 |
| 5459 | Hydrocarbon Operating, Inc. | Corpus Chrsti, TX 78401 | Oil & Gas Operator | Feb 2026 |
| 5460 | Hydrofusion Energy, LLC | Cuero, TX 77954 | Oil Operator | Feb 2026 |
| 5461 | Hydrogeo, L.L.C. | Houston, TX 77074 | Oil & Gas Operator | Feb 2026 |
| 5462 | Hyer,Na & CJ Aldenhoven Trusts | Lipan, TX 76462 | Gas Operator | Oct 2017 |
| 5463 | Hyperion Energy LP | Dallas, TX 75206 | Oil & Gas Operator | May 2014 |
| 5464 | Hyperion Oil & Gas LLC | Dallas, TX 75251 | Oil & Gas Operator | Feb 2026 |
| 5465 | Hyquest Energy, Inc. | Midland, TX 79710 | Oil & Gas Operator | Mar 2015 |
| 5466 | I & L Development Co. | Dallas, TX 75219 | Oil & Gas Operator | Mar 1996 |
| 5467 | I.T. Corporation | Arlington, TX 76016 | Oil & Gas Operator | Feb 2026 |
| 5468 | I.T. Properties | Arlington, TX 76006 | Oil & Gas Operator | Feb 2026 |
| 5469 | Ibarra Oil LLC | Blessing, TX 77419 | Oil & Gas Operator | Feb 2026 |
| 5470 | Ibc Petroleum, Inc. | San Antonio, TX 78258 | Oil & Gas Operator | Feb 2026 |
| 5471 | Ibex Resources I, L.P. | Midland, TX 79701 | Oil & Gas Operator | Jul 1999 |
| 5472 | Ibex Resources Operating LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Jun 2007 |
| 5473 | Ibex Resources, LLC | Austin, TX 78751 | Oil & Gas Operator | Jul 1999 |
| 5474 | Ica Energy Operating, L.L.C. | Odessa, TX 79760 | Oil & Gas Operator | Feb 2026 |
| 5475 | Icarus Operating Corporation | Spring, TX 77393 | Oil & Gas Operator | Feb 2026 |
| 5476 | Ice Brothers, Inc. | Monahans, TX 79756 | Oil & Gas Operator | Jul 2024 |
| 5477 | Ice Well Services, Inc. | Abilene, TX 79603 | Oil & Gas Operator | Feb 2026 |
| 5478 | Ickert Enterprises | Olney, TX 76374 | Oil & Gas Operator | Feb 2026 |
| 5479 | Ickert, A. F. Jr. | Olney, TX 76374 | Oil & Gas Operator | Apr 1998 |
| 5480 | Ics Energy LLC | Stamford, TX 79553 | Oil & Gas Operator | Feb 2026 |
| 5481 | Idaho Oil Co., Inc. | San Antonio, TX 78212 | Oil & Gas Operator | Mar 2008 |
| 5482 | Idgas, Inc. | Austin, TX 78746 | Oil & Gas Operator | Oct 1995 |
| 5483 | Ijs Oil | Saint Jo, TX 76265 | Oil & Gas Operator | Feb 2026 |
| 5484 | Ikard, Alan | Electra, TX 76360 | Oil & Gas Operator | Feb 2026 |
| 5485 | Ike Operating, LLC | Houston, TX 77010 | Oil & Gas Operator | Feb 2026 |
| 5486 | Imagery Exploration, Inc. | Dallas, TX 75380 | Oil & Gas Operator | Feb 2026 |
| 5487 | Impact Exploration Company | Oklahoma City, OK 73118 | Oil & Gas Operator | May 1998 |
| 5488 | Imperial Gas Resources LLC | Austin, TX 78701 | Oil & Gas Operator | Feb 2026 |
| 5489 | Imperial Oil Company | Houston, TX 77073 | Oil & Gas Operator | Oct 2004 |
| 5490 | Imperial Operating Co., L.L.C. | Midland, TX 79701 | Oil Operator | Sep 2023 |
| 5491 | Impetro Operating LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Nov 2020 |
| 5492 | Ina Street Operations, Inc. | Skellytown, TX 79080 | Oil & Gas Operator | Nov 2012 |
| 5493 | Inca Oil Corporation | Oklahoma City, OK 73102 | Oil & Gas Operator | May 2009 |
| 5494 | Incendium Resources LLC | Argyle, TX 76226 | Oil & Gas Operator | Feb 2026 |
| 5495 | Incline Energy | Midland, TX 79710 | Oil & Gas Operator | Feb 2026 |
| 5496 | Independence Resources MGMT, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Mar 2021 |
| 5497 | Indexgeo & Associates, Inc. | Houston, TX 77002 | Oil & Gas Operator | Apr 2009 |
| 5498 | Indian Exploration, Inc. | Lafayette, LA 70505 | Oil & Gas Operator | Feb 2026 |
| 5499 | Indian Oil Company | Gainesville, TX 76241 | Oil & Gas Operator | Feb 2026 |
| 5500 | Indian Oil LTD. | Whitsett, TX 78075 | Oil & Gas Operator | Feb 2026 |