| 10501 | Sterling Engine Service, Inc. | Alice, TX 78333 | Oil & Gas Operator | Sep 2026 |
| 10502 | Sterling Expl. & Prod. Co., LLC | Houston, TX 77057 | Oil & Gas Operator | Sep 2026 |
| 10503 | Sterling Inv. Group & Assc., Inc | Baytown, TX 77522 | Oil & Gas Operator | Sep 2026 |
| 10504 | Sterling Oil And Gas | Weatherford, TX 76086 | Oil & Gas Operator | Sep 2026 |
| 10505 | Sterling Oil And Gas LLC | Wichita Falls, TX 76310 | Oil Operator | Sep 2026 |
| 10506 | Sterlynn Oil & Gas, Inc. | Harper, TX 78631 | Oil Operator | Sep 2026 |
| 10507 | Stetson Petroleum Corp. | Rollins, MT 59931 | Oil & Gas Operator | Sep 2026 |
| 10508 | Stevens & Tull, Inc. | Midland, TX 79702 | Oil & Gas Operator | Jun 2000 |
| 10509 | Stevens Oil & Gas LLC | Marietta, OH 45750 | Oil & Gas Operator | Dec 2025 |
| 10510 | Stevenson, Ken & Associates, Inc | La Grange, TX 78945 | Oil & Gas Operator | Sep 2002 |
| 10511 | Steward Energy II, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Mar 2025 |
| 10512 | Steward Energy, LLC | Frisco, TX 75034 | Oil & Gas Operator | Nov 2014 |
| 10513 | Stewardship Resources | Roanoke, TX 76262 | Oil & Gas Operator | Jun 2022 |
| 10514 | Stewart & Porter | Mingus, TX 76463 | Oil & Gas Operator | Apr 2002 |
| 10515 | Stewart Construction | Graham, TX 76450 | Oil & Gas Operator | Sep 2026 |
| 10516 | Stewart Family Holdings LLC | Weatherford, TX 76087 | Oil & Gas Operator | Sep 2026 |
| 10517 | Stewart Oil & Gas | Stephenville, TX 76401 | Gas Operator | Sep 2026 |
| 10518 | Stewart Producers, Inc. | Mount Vernon, IL 62864 | Oil & Gas Operator | Apr 2026 |
| 10519 | Stewart, James G. | Graham, TX 76450 | Oil & Gas Operator | Sep 2019 |
| 10520 | Stickney Oil & Gas, Inc. | Midland, TX 79704 | Oil & Gas Operator | Nov 2014 |
| 10521 | Stickney, F. C., Inc. | Midland, TX 79704 | Oil & Gas Operator | Oct 1998 |
| 10522 | Stillwater Petroleum Company | College Sta, TX 77845 | Oil & Gas Operator | Nov 1997 |
| 10523 | Stine Massie Oil, LLC | Mansfield, TX 76063 | Oil Operator | Jul 2025 |
| 10524 | Stine Oil Company | Mansfield, TX 76063 | Oil Operator | Mar 2016 |
| 10525 | Stine, Ward L.Oil Company | Windthorst, TX 76389 | Oil & Gas Operator | Oct 1999 |
| 10526 | Stine-Hawkins | Mansfield, TX 76063 | Gas Operator | Sep 2026 |
| 10527 | Sting Exploration Company | Tulsa, OK 74120 | Oil Operator | Sep 2004 |
| 10528 | Stinger Oil & Gas Inc. | Sherman Oaks, CA 91403 | Oil & Gas Operator | Oct 2013 |
| 10529 | Stingray Oil Company, Inc. | Goldthwaite, TX 76844 | Oil Operator | Sep 2026 |
| 10530 | Stivers Inc | Graham, TX 76450 | Oil & Gas Operator | May 2003 |
| 10531 | Stivers Operating, Inc. | Graham, TX 76450 | Oil & Gas Operator | Feb 1995 |
| 10532 | Sto Operating Company | San Antonio, TX 78258 | Oil & Gas Operator | Sep 2026 |
| 10533 | Stober Oil And Gas Services, LLC | Breckenridge, TX 76424 | Oil & Gas Operator | Sep 2026 |
| 10534 | Stoltz, Deane H. | Midland, TX 79710 | Oil & Gas Operator | Oct 2000 |
| 10535 | Stone & Webster Oil Company, Inc | Houston, TX 77002 | Oil & Gas Operator | Dec 1995 |
| 10536 | Stone & Williams Oil&Gas Co.,Inc | Holliday, TX 76366 | Oil Operator | Apr 2013 |
| 10537 | Stone Creek Operating, LLC | Oklahoma City, OK 73142 | Oil & Gas Operator | Sep 2026 |
| 10538 | Stone Edge Energy, LLC | El Campo, TX 77437 | Oil & Gas Operator | Sep 2026 |
| 10539 | Stone Mountain Petroleum, LLC | Houston, TX 77008 | Oil & Gas Operator | Aug 2002 |
| 10540 | Stone, B. W. | Holliday, TX 76366 | Oil & Gas Operator | Feb 2012 |
| 10541 | Stone, Gregory W. | Holliday, TX 76366 | Oil & Gas Operator | Sep 2026 |
| 10542 | Stone, J. G. Oil Co. | Victoria, TX 77904 | Oil & Gas Operator | Sep 2018 |
| 10543 | Stone, M. L. | Kerrville, TX 78029 | Oil & Gas Operator | Aug 2003 |
| 10544 | Stonebriar Oil LLC | Dallas, TX 75252 | Oil & Gas Operator | Sep 2026 |
| 10545 | Stonebriar Operating, LLC | Plano, TX 75093 | Oil Operator | Sep 2026 |
| 10546 | Stoneburner Exploration, Inc. | Dallas, TX 75206 | Oil & Gas Operator | Oct 1997 |
| 10547 | Stonegate Operators, Inc. | Addison, TX 75001 | Oil Operator | Sep 2026 |
| 10548 | Stonegate Production Company,LLC | Houston, TX 77024 | Oil & Gas Operator | Sep 2026 |
| 10549 | Stoneham Oil Company | Houston, TX 77002 | Oil & Gas Operator | Sep 1995 |
| 10550 | Stoner Oil | Corsicana, TX 75109 | Oil Operator | Sep 2026 |
| 10551 | Stoner, C. M. | Cleburne, TX 76031 | Oil & Gas Operator | Oct 1996 |
| 10552 | Stoneriver Energy, LLC | Lubbock, TX 79424 | Oil & Gas Operator | Sep 2026 |
| 10553 | Stonetown Properties, LTD. | Amarillo, TX 79114 | Oil & Gas Operator | Dec 2016 |
| 10554 | Stonewall Production Company Inc | Tyler, TX 75702 | Oil & Gas Operator | Aug 2009 |
| 10555 | Storm Oil | Burkburnett, TX 76354 | Oil & Gas Operator | Sep 2026 |
| 10556 | Storm Peak Energy, LLC | Midland, TX 79702 | Oil & Gas Operator | May 2012 |
| 10557 | Story NRG LLC | Boerne, TX 78006 | Oil & Gas Operator | Sep 2026 |
| 10558 | Stout Consulting Services, Inc. | Alice, TX 78333 | Oil & Gas Operator | May 1999 |
| 10559 | Stout Energy Inc. | Midland, TX 79708 | Oil & Gas Operator | Sep 2026 |
| 10560 | Stovall Operating Co. | Graham, TX 76450 | Oil & Gas Operator | Sep 2026 |
| 10561 | Stovall, Howard | Cisco, TX 76437 | Oil & Gas Operator | Sep 2026 |
| 10562 | Stovall, Troy | Graham, TX 76450 | Oil & Gas Operator | Sep 2026 |
| 10563 | Stowe Energy, Inc. | Vernon, TX 76384 | Oil & Gas Operator | Mar 2003 |
| 10564 | Strago Petroleum Corporation | Houston, TX 77002 | Oil & Gas Operator | Aug 1994 |
| 10565 | Strand Energy, Inc. (I) | Houston, TX 77002 | Oil & Gas Operator | Sep 1996 |
| 10566 | Strand Energy, L.C. | Houston, TX 77002 | Oil & Gas Operator | Sep 2026 |
| 10567 | Strand, Carlton Oil | Stamford, TX 79553 | Oil & Gas Operator | May 1997 |
| 10568 | Strange, D. D. | Archer City, TX 76351 | Oil & Gas Operator | Sep 2014 |
| 10569 | Strange, Joyce Marital Trust | Holliday, TX 76366 | Oil Operator | May 2008 |
| 10570 | Strat Land Exploration Company | Tulsa, OK 74103 | Oil & Gas Operator | May 2026 |
| 10571 | Strata Operating, Inc. | Corpus Chrsti, TX 78466 | Oil & Gas Operator | Sep 2026 |
| 10572 | Strata Petroleum Co. | Midland, TX 79701 | Oil & Gas Operator | May 1997 |
| 10573 | Strata Star Petroleum Corp. | Uvalde, TX 78801 | Oil Operator | Sep 2026 |
| 10574 | Stratagas, Inc. | Rowlett, TX 75088 | Oil & Gas Operator | May 2006 |
| 10575 | Stratakan Exploration, LLC | Plainville, KS 67663 | Oil & Gas Operator | Apr 2026 |
| 10576 | Stratco Operating Co., Inc. | Austin, TX 78701 | Oil & Gas Operator | Sep 2026 |
| 10577 | Stratco, Inc. | Edmond, OK 73013 | Oil & Gas Operator | Mar 2015 |
| 10578 | Strategy Operating, LLC | Midland, TX 79710 | Gas Operator | Sep 2026 |
| 10579 | Stratex Oil & Gas Holdings, Inc. | Watertown, CT 06795 | Oil Operator | Jun 2015 |
| 10580 | Stratlynn, Inc. | Conroe, TX 77305 | Oil & Gas Operator | Mar 2008 |
| 10581 | Strawn DRLG. Co. | Wichita Falls, TX 76307 | Oil & Gas Operator | Aug 2005 |
| 10582 | Strawn Energy Services, LLC | Lubbock, TX 79424 | Oil Operator | Sep 2026 |
| 10583 | Strawn Operating Co., L.L.C. | El Paso, TX 79912 | Oil Operator | Sep 2026 |
| 10584 | Strawn Partners Operating, LLC | Graham, TX 76450 | Oil & Gas Operator | Sep 2026 |
| 10585 | Strawn Petroleum Operating, LLC | Houston, TX 77056 | Oil & Gas Operator | Sep 2026 |
| 10586 | Stray Oil Company | Burkburnett, TX 76354 | Oil & Gas Operator | Aug 2008 |
| 10587 | Stray Oil Company, LLC | Burkburnett, TX 76354 | Oil Operator | Nov 2017 |
| 10588 | Stream Energy, Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | Dec 2025 |
| 10589 | Strebor Oil Co. | Dallas, TX 75225 | Oil & Gas Operator | Jun 1993 |
| 10590 | Street, Spencer B., Jr. | Graham, TX 76450 | Oil & Gas Operator | Mar 1998 |
| 10591 | Strickland, H.W. | Henrietta, TX 76365 | Oil & Gas Operator | Dec 1999 |
| 10592 | Strike Too Oil | Albany, TX 76430 | Oil Operator | Sep 2026 |
| 10593 | Stringer Oil & Gas Co., Inc. | San Angelo, TX 76902 | Oil & Gas Operator | Oct 1996 |
| 10594 | Striper Oil, Inc. | Dallas, TX 75379 | Oil & Gas Operator | Apr 2002 |
| 10595 | Stronghold Energy II Oper, LLC | Midland, TX 79702 | Oil & Gas Operator | Aug 2022 |
| 10596 | Stroube Energy Corporation | Dallas, TX 75248 | Oil & Gas Operator | Jan 2012 |
| 10597 | Stroube Family Partnership #2 | Corsicana, TX 75151 | Oil Operator | Sep 2026 |
| 10598 | Stroud Energy, LTD. | Fort Worth, TX 76102 | Oil & Gas Operator | Jun 2006 |
| 10599 | Stroud Oil Properties, Inc. | Fort Worth, TX 76102 | Oil & Gas Operator | May 2013 |
| 10600 | Stroud Petroleum, Inc. | Shreveport, LA 71162 | Oil & Gas Operator | Sep 2026 |