| 4401 | Tehi Illinois, LLC | Olney, IL 62450 | Oil & Gas Operator | Feb 2019 |
| 4402 | Teichgraeber Oil | | Oil Operator | Nov 1995 |
| 4403 | Teichgraeber Oil Co. | | Oil Operator | Dec 1994 |
| 4404 | Teichgraeber Oil, Inc. | Eureka, KS 67045 | Oil & Gas Operator | Dec 2024 |
| 4405 | Tekenergy Inc | Oklahoma City, OK 73112 | Oil & Gas Operator | Mar 2015 |
| 4406 | Teko Oil & Gas I | | Oil Operator | Aug 1992 |
| 4407 | Tema Oil And Gas, LLC | Houston, TX 77040 | Oil & Gas Operator | Apr 2000 |
| 4408 | Tema Oil Company | Amarillo, TX 79101 | Oil & Gas Operator | Jun 2009 |
| 4409 | Temple & Roark | | Oil & Gas Operator | Sep 1981 |
| 4410 | Tenex Oil Corpor | | Oil Operator | May 1991 |
| 4411 | Tengasco, Inc. | Houston, TX 77063 | Oil & Gas Operator | Sep 2025 |
| 4412 | Tenison Oil Comp | | Oil Operator | Jan 1993 |
| 4413 | Tenk, Lawrence O. | Ottawa, KS 66067 | Oil & Gas Operator | Oct 1998 |
| 4414 | Tenneco Oil Comp | | Oil & Gas Operator | Aug 1995 |
| 4415 | Tenneco Oil Company | Oklahoma City, OK 73125 | Oil & Gas Operator | Nov 2025 |
| 4416 | Terra Max Energy | | Oil Operator | Mar 1986 |
| 4417 | Terra Resc Incor | | Oil Operator | Mar 1986 |
| 4418 | Terrol Energy In | | Oil Operator | Feb 1993 |
| 4419 | Terrol Energy Incorporated | Hygiene, CO 80533 | Oil & Gas Operator | Dec 2006 |
| 4420 | Tesoro Petroleum | | Oil Operator | Mar 1982 |
| 4421 | Tet Energy | | Oil Operator | Aug 2025 |
| 4422 | Texaco Explorati | | Oil & Gas Operator | Dec 1996 |
| 4423 | Texaco Exploration & Prod Inc | Houston, TX 77236 | Oil & Gas Operator | Dec 2025 |
| 4424 | Texaco Inc | Kingfisher, OK 73750 | Oil & Gas Operator | Dec 2017 |
| 4425 | Texaco USA - Mor | | Oil Operator | Aug 1988 |
| 4426 | Texas Energies I | | Oil & Gas Operator | Aug 1994 |
| 4427 | Texas Energies Inc | Pratt, KS 67124 | Oil & Gas Operator | Aug 1998 |
| 4428 | Texas State Oil Co. | Irving, TX 75062 | Oil & Gas Operator | Mar 2017 |
| 4429 | Texas Tea Oil Company | Jacksboro, TX 76458 | Oil & Gas Operator | Feb 2011 |
| 4430 | Texas/Arkansas P | | Oil & Gas Operator | Sep 1990 |
| 4431 | Texkan Exploration LLC | Plainville, KS 67663 | Oil Operator | Dec 2019 |
| 4432 | Texkan Resources, LLC | Odessa, TX 79765 | Oil & Gas Operator | Jun 2025 |
| 4433 | Texokan Energy C | | Oil Operator | Nov 1986 |
| 4434 | Texokan Resources, Inc. | Dallas, TX 75206 | Oil Operator | Apr 2012 |
| 4435 | TGT Petroleum Co | | Oil & Gas Operator | Apr 1995 |
| 4436 | Tharp Oil, A General Partnership | Chanute, KS 66720 | Oil Operator | Mar 2014 |
| 4437 | The Bill Bowman Oil Company | | Oil Operator | Sep 2025 |
| 4438 | The Pyramid Corporation, Inc. | Wichita, KS 67206 | Oil & Gas Operator | Dec 2009 |
| 4439 | The Raven Company LLC | Granbury, TX 76049 | Oil Operator | Mar 2010 |
| 4440 | The Sylvester Oil Co, LLC | League City, TX 77573 | Oil Operator | Aug 2025 |
| 4441 | The Trees Oil Company | Wichita, KS 67208 | Oil & Gas Operator | Nov 2014 |
| 4442 | Thomas Exploration Company | Tulsa, OK 74136-6302 | Oil & Gas Operator | Nov 2025 |
| 4443 | Thomas Garner, Inc. | St John, KS 67576 | Oil & Gas Operator | Sep 2025 |
| 4444 | Thomas M. Brown LLC | Plainville, KS 67663 | Oil Operator | Sep 2025 |
| 4445 | Thomas Well Serv | | Oil Operator | Dec 1996 |
| 4446 | Thomas Well Service, Inc. | Easton, KS 66020 | Oil Operator | Sep 2025 |
| 4447 | Thomas, Vernon C. | Gardner, KS 66030 | Oil Operator | Jun 2015 |
| 4448 | Thomason Oil Com | | Oil Operator | Oct 1984 |
| 4449 | Thomason Petroleum, Inc | Hays, KS 67601 | Oil Operator | Sep 2025 |
| 4450 | Thompson Drilling Company, Inc. | Independence, KS 67301 | Oil Operator | Sep 2001 |
| 4451 | Thompson Oil Co. | Corsicana, TX 75151 | Oil & Gas Operator | Nov 2025 |
| 4452 | Thompson, Don W | Herington, KS 67449 | Oil Operator | Jul 2003 |
| 4453 | Thompson, Larry N. Revocable Trust, Uid 5-20, 1997 | Elkhart, KS 67950 | Gas Operator | Sep 2006 |
| 4454 | Thomsen Brothers Co., LLC | Lamont, KS 66855 | Oil Operator | Sep 2025 |
| 4455 | Thornberry Family Partnership LTD. | New Waverly, TX 77358 | Oil Operator | Jun 2025 |
| 4456 | Thorne Harold & | | Oil Operator | May 1994 |
| 4457 | Thornton Drilling Company Ptrnship | Eureka, KS 67045 | Oil Operator | Jun 2010 |
| 4458 | Thornton Oil Co. | Abilene, TX 79603 | Oil & Gas Operator | Aug 2003 |
| 4459 | Thoroughbred Associates LLC | Wichita, KS 67226 | Oil & Gas Operator | Sep 2025 |
| 4460 | Three Bros. Energy, Inc. | Ponca City, OK 74601 | Gas Operator | Dec 2013 |
| 4461 | Three D Oil Comp | | Oil & Gas Operator | Jan 1988 |
| 4462 | Three D Resources Inc | Liberal, KS 67905 | Oil & Gas Operator | Sep 2025 |
| 4463 | Three Rivers Exploration LLC | Olpe, KS 66865 | Oil Operator | Sep 2023 |
| 4464 | Thresher Energy, Inc. | Houston, TX 77060 | Oil & Gas Operator | Feb 2026 |
| 4465 | Thunder Oil & Gas, LLC | Ardmore, OK 73402 | Oil & Gas Operator | Dec 2025 |
| 4466 | Thunderbird Dril | | Oil & Gas Operator | Nov 1995 |
| 4467 | Thunderbird Drilling, Inc. | Wichita, KS 67207 | Oil Operator | Oct 2008 |
| 4468 | Thunderbird Oil | | Oil Operator | Oct 1991 |
| 4469 | Thunderbolt Construction Corp. | Louisburg, KS 66053 | Oil Operator | Oct 2024 |
| 4470 | Thurber, Gueydon | Horseshoe Bay, TX 78657 | Oil Operator | May 2001 |
| 4471 | Tidal Wave Energy, Inc. | New Castle, PA 16105 | Oil & Gas Operator | Jun 2022 |
| 4472 | Tidd, Frankie | Neosho Falls, KS 66758 | Oil Operator | Nov 1996 |
| 4473 | Tidd, Gary D. | Piqua, KS 66761 | Oil Operator | May 2016 |
| 4474 | Timberlake Energy Corporation | Cypress, TX 77429 | Oil Operator | Nov 2013 |
| 4475 | Timberline Oil & | | Oil & Gas Operator | Jul 1995 |
| 4476 | Timberline Oil & Gas | | Oil & Gas Operator | Sep 1995 |
| 4477 | Timberline Oil & Gas Corporation | Rapid City, SD 57702 | Oil & Gas Operator | Sep 2025 |
| 4478 | Tinsmon, J. Corry | Wichita, KS 67226 | Oil Operator | Dec 2009 |
| 4479 | Titan Energy Corp | Thomasville, AL 36784 | Oil & Gas Operator | Sep 2019 |
| 4480 | TK Electric & Oilfield Service, LLC | Plainville, KS 67663 | Oil Operator | Sep 2025 |
| 4481 | Tko Investments, Inc. | Dodge City, KS 67801 | Oil & Gas Operator | Sep 2025 |
| 4482 | TM Enterprises, Inc. | Wichita, KS 67278 | Oil Operator | Dec 2019 |
| 4483 | TMM Investments LTD. | Tyler, TX 75703 | Oil Operator | Dec 2024 |
| 4484 | TNT Energy LLC | Paola, KS 66071 | Oil Operator | Dec 2009 |
| 4485 | TNT Well Servicing, Inc. | Pratt, KS 67124 | Oil Operator | Jun 2006 |
| 4486 | Todd C H Incorpo | | Oil & Gas Operator | Feb 1994 |
| 4487 | Todd, Marc E | Wichita, KS 67203 | Oil Operator | Aug 2025 |
| 4488 | Toil Inc. | Neodesha, KS 66757 | Oil & Gas Operator | Sep 2025 |
| 4489 | Tom Brown Construction, Inc. | Astor, FL 32102 | Oil Operator | Sep 2025 |
| 4490 | Tom'S Oil | | Oil Operator | Aug 2025 |
| 4491 | Tomco Oil Incorp | | Oil Operator | Nov 1989 |
| 4492 | Tomco Oil, Inc. | Atlanta, KS 67008 | Oil & Gas Operator | Sep 2025 |
| 4493 | Tomkat Limited | | Oil & Gas Operator | Jul 1995 |
| 4494 | Tomkat, LTD. | Wichita, KS 67278 | Oil & Gas Operator | Oct 2009 |
| 4495 | Tomlinson Oil Co Inc | Great Bend, KS 67530 | Oil & Gas Operator | May 2025 |
| 4496 | Tomlinson Operating, LLC | Ketchum, ID 83340 | Oil & Gas Operator | Oct 2014 |
| 4497 | Tomlinson, Sid | Hays, KS 67601 | Oil & Gas Operator | Sep 2002 |
| 4498 | Tonda Oil Company | Independence, KS 67301 | Oil & Gas Operator | Jul 1996 |
| 4499 | Tontol, LLC | Scottsdale, AZ 85250 | Oil Operator | Sep 2025 |
| 4500 | Topat Oil Corporation | Midland, TX 79701 | Oil & Gas Operator | Sep 2017 |