| 10501 | Stephens & Johnson Operating Co. | Wichita Falls, TX 76307 | Oil & Gas Operator | Oct 2025 |
| 10502 | Stephens Energy Corp. | Graham, TX 76450 | Oil & Gas Operator | Feb 2022 |
| 10503 | Stephens Exploration, Inc. | Dallas, TX 75367 | Oil & Gas Operator | Jul 2025 |
| 10504 | Stephens Production Company | The Woodlands, TX 77381 | Oil & Gas Operator | Jul 2025 |
| 10505 | Stephens, Autry C. | Midland, TX 79701 | Oil & Gas Operator | Mar 2023 |
| 10506 | Stephens, Clayton E. | Dallas, TX 75229 | Oil & Gas Operator | Nov 2011 |
| 10507 | Stephens, Glynn | Overton, TX 75684 | Oil & Gas Operator | Oct 2001 |
| 10508 | Stephens, Hayseed Oil Inc. | Weatherford, TX 76087 | Oil & Gas Operator | Mar 2008 |
| 10509 | Stephens, Mickie L. | MC Camey, TX 79752 | Oil & Gas Operator | Aug 1998 |
| 10510 | Stephens, Morris | Graham, TX 76450 | Oil & Gas Operator | May 1996 |
| 10511 | Stephenson Oil & Gas, Inc. | Eastland, TX 76448 | Oil & Gas Operator | Sep 1999 |
| 10512 | Stephenson, Light | Whitsett, TX 78075 | Oil & Gas Operator | Nov 2000 |
| 10513 | Sterling Energy Resources, Inc. | Overland Park, KS 66212 | Oil Operator | May 2019 |
| 10514 | Sterling Energy, Inc. | Houston, TX 77002 | Oil & Gas Operator | Dec 2015 |
| 10515 | Sterling Engine Service, Inc. | Alice, TX 78333 | Oil & Gas Operator | Oct 2025 |
| 10516 | Sterling Expl. & Prod. Co., LLC | Houston, TX 77057 | Oil & Gas Operator | Oct 2025 |
| 10517 | Sterling Inv. Group & Assc., Inc | Baytown, TX 77522 | Oil & Gas Operator | Oct 2025 |
| 10518 | Sterling Oil And Gas | Weatherford, TX 76086 | Oil & Gas Operator | Oct 2025 |
| 10519 | Sterlynn Oil & Gas, Inc. | Harper, TX 78631 | Oil Operator | Oct 2025 |
| 10520 | Stetson Petroleum Corp. | Rollins, MT 59931 | Oil & Gas Operator | Oct 2025 |
| 10521 | Stevens & Tull, Inc. | Midland, TX 79702 | Oil & Gas Operator | Jun 2000 |
| 10522 | Stevens Oil & Gas LLC | Marietta, OH 45750 | Oil & Gas Operator | Dec 2024 |
| 10523 | Stevenson, Ken & Associates, Inc | La Grange, TX 78945 | Oil & Gas Operator | Sep 2002 |
| 10524 | Steward Energy II, LLC | Frisco, TX 75034 | Oil & Gas Operator | Mar 2025 |
| 10525 | Steward Energy, LLC | Frisco, TX 75034 | Oil & Gas Operator | Nov 2014 |
| 10526 | Stewardship Resources | Roanoke, TX 76262 | Oil & Gas Operator | Jun 2022 |
| 10527 | Stewart & Porter | Mingus, TX 76463 | Oil & Gas Operator | Apr 2002 |
| 10528 | Stewart Construction | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 10529 | Stewart Contract Services | Strawn, TX 76475 | Oil & Gas Operator | Oct 2025 |
| 10530 | Stewart Family Holdings LLC | Weatherford, TX 76087 | Oil & Gas Operator | Oct 2025 |
| 10531 | Stewart Oil & Gas | Stephenville, TX 76401 | Gas Operator | Oct 2025 |
| 10532 | Stewart Producers, Inc. | Mount Vernon, IL 62864 | Oil & Gas Operator | Jun 2025 |
| 10533 | Stewart, James G. | Graham, TX 76450 | Oil & Gas Operator | Sep 2019 |
| 10534 | Stickney Oil & Gas, Inc. | Midland, TX 79704 | Oil & Gas Operator | Nov 2014 |
| 10535 | Stickney, F. C., Inc. | Midland, TX 79704 | Oil & Gas Operator | Oct 1998 |
| 10536 | Stillwater Petroleum Company | College Sta, TX 77845 | Oil & Gas Operator | Nov 1997 |
| 10537 | Stine Massie Oil, LLC | Mansfield, TX 76063 | Oil Operator | Jul 2025 |
| 10538 | Stine Oil Company | Mansfield, TX 76063 | Oil Operator | Mar 2016 |
| 10539 | Stine, Ward L.Oil Company | Windthorst, TX 76389 | Oil & Gas Operator | Oct 1999 |
| 10540 | Stine-Hawkins | Mansfield, TX 76063 | Gas Operator | Oct 2025 |
| 10541 | Sting Exploration Company | Tulsa, OK 74120 | Oil Operator | Sep 2004 |
| 10542 | Stinger Oil & Gas Inc. | Sherman Oaks, CA 91403 | Oil & Gas Operator | Oct 2013 |
| 10543 | Stingray Oil Company, Inc. | Mullin, TX 76864 | Oil Operator | Oct 2025 |
| 10544 | Stivers Inc | Graham, TX 76450 | Oil & Gas Operator | May 2003 |
| 10545 | Stivers Operating, Inc. | Graham, TX 76450 | Oil & Gas Operator | Feb 1995 |
| 10546 | Sto Operating Company | San Antonio, TX 78258 | Oil & Gas Operator | Oct 2025 |
| 10547 | Stober Oil And Gas Services, LLC | Breckenridge, TX 76424 | Oil & Gas Operator | Oct 2025 |
| 10548 | Stoltz, Deane H. | Midland, TX 79710 | Oil & Gas Operator | Oct 2000 |
| 10549 | Stone & Webster Oil Company, Inc | Houston, TX 77002 | Oil & Gas Operator | Dec 1995 |
| 10550 | Stone & Williams Oil&Gas Co.,Inc | Holliday, TX 76366 | Oil Operator | Apr 2013 |
| 10551 | Stone Creek Operating, LLC | Oklahoma City, OK 73142 | Oil & Gas Operator | Oct 2025 |
| 10552 | Stone Edge Energy, LLC | Georgetown, TX 78633 | Oil & Gas Operator | Oct 2025 |
| 10553 | Stone Mountain Petroleum, LLC | Houston, TX 77008 | Oil & Gas Operator | Aug 2002 |
| 10554 | Stone, B. W. | Holliday, TX 76366 | Oil & Gas Operator | Feb 2012 |
| 10555 | Stone, Gregory W. | Holliday, TX 76366 | Oil & Gas Operator | Oct 2025 |
| 10556 | Stone, J. G. Oil Co. | Victoria, TX 77904 | Oil & Gas Operator | Sep 2018 |
| 10557 | Stone, M. L. | Kerrville, TX 78029 | Oil & Gas Operator | Aug 2003 |
| 10558 | Stonebriar Oil LLC | Frisco, TX 75034 | Oil & Gas Operator | Oct 2025 |
| 10559 | Stonebriar Operating, LLC | Plano, TX 75093 | Oil Operator | Oct 2025 |
| 10560 | Stoneburner Exploration, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Oct 1997 |
| 10561 | Stonegate Operators, Inc. | Addison, TX 75001 | Oil Operator | Oct 2025 |
| 10562 | Stonegate Production Company,LLC | Houston, TX 77024 | Oil & Gas Operator | Oct 2025 |
| 10563 | Stoneham Oil Company | Houston, TX 77002 | Oil & Gas Operator | Sep 1995 |
| 10564 | Stoner Oil | Corsicana, TX 75109 | Oil Operator | Oct 2025 |
| 10565 | Stoner, C. M. | Cleburne, TX 76031 | Oil & Gas Operator | Oct 1996 |
| 10566 | Stoneriver Energy, LLC | Lubbock, TX 79424 | Oil & Gas Operator | Oct 2025 |
| 10567 | Stonetown Properties, LTD. | Amarillo, TX 79114 | Oil & Gas Operator | Dec 2016 |
| 10568 | Stonewall Production Company Inc | Tyler, TX 75702 | Oil & Gas Operator | Aug 2009 |
| 10569 | Storm Oil | Burkburnett, TX 76354 | Oil & Gas Operator | Oct 2025 |
| 10570 | Storm Peak Energy, LLC | Midland, TX 79702 | Oil & Gas Operator | May 2012 |
| 10571 | Story NRG LLC | Boerne, TX 78006 | Oil & Gas Operator | Oct 2025 |
| 10572 | Stout Consulting Services, Inc. | Alice, TX 78333 | Oil & Gas Operator | May 1999 |
| 10573 | Stout Energy Inc. | Midland, TX 79708 | Oil & Gas Operator | Oct 2025 |
| 10574 | Stout Energy Partners LLC | Sulphur SPGS, TX 75482 | Oil Operator | Oct 2025 |
| 10575 | Stovall Operating Co. | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 10576 | Stovall, Howard | Cisco, TX 76437 | Oil & Gas Operator | Oct 2025 |
| 10577 | Stovall, Troy | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 10578 | Stowe Energy, Inc. | Vernon, TX 76384 | Oil & Gas Operator | Mar 2003 |
| 10579 | Strago Petroleum Corporation | Houston, TX 77002 | Oil & Gas Operator | Aug 1994 |
| 10580 | Strand Energy, Inc. (I) | Houston, TX 77002 | Oil & Gas Operator | Sep 1996 |
| 10581 | Strand Energy, L.C. | Houston, TX 77002 | Oil & Gas Operator | Oct 2025 |
| 10582 | Strand, Carlton Oil | Stamford, TX 79553 | Oil & Gas Operator | May 1997 |
| 10583 | Strange, D. D. | Archer City, TX 76351 | Oil & Gas Operator | Sep 2014 |
| 10584 | Strange, Joyce Marital Trust | Holliday, TX 76366 | Oil Operator | May 2008 |
| 10585 | Strat Land Exploration Company | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2025 |
| 10586 | Strata Operating, Inc. | Corpus Chrsti, TX 78466 | Oil & Gas Operator | Oct 2025 |
| 10587 | Strata Petroleum Co. | Midland, TX 79701 | Oil & Gas Operator | May 1997 |
| 10588 | Strata Star Petroleum Corp. | Uvalde, TX 78801 | Oil Operator | Oct 2025 |
| 10589 | Stratagas, Inc. | Rowlett, TX 75088 | Oil & Gas Operator | May 2006 |
| 10590 | Stratco Operating Co Inc | Austin, TX 78701 | Oil & Gas Operator | Oct 2025 |
| 10591 | Stratco, Inc. | Edmond, OK 73013 | Oil & Gas Operator | Mar 2015 |
| 10592 | Strategy Operating, LLC | Midland, TX 79710 | Gas Operator | Oct 2025 |
| 10593 | Stratex Oil & Gas Holdings, Inc. | Watertown, CT 06795 | Oil Operator | Jun 2015 |
| 10594 | Stratlynn, Inc. | Conroe, TX 77305 | Oil & Gas Operator | Mar 2008 |
| 10595 | Strawn DRLG. Co. | Wichita Falls, TX 76307 | Oil & Gas Operator | Aug 2005 |
| 10596 | Strawn Energy Services, LLC | Lubbock, TX 79404 | Oil Operator | Oct 2025 |
| 10597 | Strawn Operating Co., L.L.C. | El Paso, TX 79912 | Oil Operator | Oct 2025 |
| 10598 | Strawn Partners Operating, LLC | Graham, TX 76450 | Oil & Gas Operator | Oct 2025 |
| 10599 | Strawn Petroleum Operating, LLC | Houston, TX 77056 | Oil & Gas Operator | Oct 2025 |
| 10600 | Stray Oil Company | Burkburnett, TX 76354 | Oil & Gas Operator | Aug 2008 |