| 501 | STB Energy Inc. | Tulsa, OK 74105 | Oil & Gas Operator | Jul 2008 |
| 502 | Stedman Oil & Gas LLC | Hobart, OK 73651-1624 | Oil & Gas Operator | Mar 2015 |
| 503 | Steele Jr Guy M Test Trust | Dallas, TX 75230 | Gas Operator | Mar 2018 |
| 504 | Steele VIctor Patterson | Wewoka, OK 74884-0560 | Oil & Gas Operator | Jan 2001 |
| 505 | Stephen Michael Inc | Midwest City, OK 73130-5200 | Oil & Gas Operator | Oct 2015 |
| 506 | Stephens & Johnson Operating Co. | Wichita Falls, TX 76307 | Oil & Gas Operator | Dec 2025 |
| 507 | Stephens Energy Group LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Oct 2025 |
| 508 | Stephens Exploration, Inc. | Dallas, TX 75367 | Oil & Gas Operator | Nov 2025 |
| 509 | Stephens Operating Inc | Ardmore, OK 73401 | Oil & Gas Operator | Sep 2014 |
| 510 | Stephens Production Company | The Woodlands, TX 77381 | Oil & Gas Operator | Nov 2025 |
| 511 | Stephens, Autry C. | Midland, TX 79701 | Oil & Gas Operator | Mar 2023 |
| 512 | Stephenson W W Pet Corp | Edmond, OK 73003-0014 | Oil & Gas Operator | Jul 2017 |
| 513 | Sterling Oil Of Okla Inc | Tulsa, OK 74170-2163 | Oil & Gas Operator | Nov 2006 |
| 514 | Sterling Properties Inc | Lawton, OK 73501-9601 | Oil Operator | Oct 2025 |
| 515 | Stesco Operating Company LLC | Oklahoma City, OK 73120 | Oil & Gas Operator | Oct 2025 |
| 516 | Stetson Energy Corporation | Duncan, OK 73534-0098 | Oil & Gas Operator | Mar 2015 |
| 517 | Stevens & Tull, Inc. | Midland, TX 79702 | Oil & Gas Operator | Jun 2000 |
| 518 | Stevens Quincy O | Oklahoma City, OK 73116-4102 | Oil & Gas Operator | Dec 2019 |
| 519 | Stevenson Oil Co | Houston, TX 77002 | Oil & Gas Operator | Mar 2025 |
| 520 | Stewart Inc | Ringling, OK 73456 | Oil & Gas Operator | Oct 2025 |
| 521 | Stewart K Petroleum Corp | Edmond, OK 73013 | Oil & Gas Operator | Mar 2015 |
| 522 | Stewart Morris E Oil Company | Oklahoma City, OK 73132 | Oil & Gas Operator | Jan 2013 |
| 523 | Stewart Morris E Operating Co LLC | Oklahoma City, OK 73172-0600 | Oil & Gas Operator | Jul 2008 |
| 524 | Stewart Oil & Gas Investments Inc | Porum, OK 74455 | Gas Operator | Nov 2025 |
| 525 | Stewart Operating | | Oil Operator | Jul 2019 |
| 526 | Stidham Bob And Alice F | Sperry, OK 74073 | Oil Operator | Oct 2025 |
| 527 | Stigler Gas Company | Stigler, OK 74462 | Gas Operator | Oct 2025 |
| 528 | Still A B Wel-Service Inc | Drumright, OK 74030-0787 | Oil & Gas Operator | Jul 2019 |
| 529 | Still Alex B Estate Of | Sagle, ID 83860-0644 | Oil & Gas Operator | Nov 2018 |
| 530 | Stillwater Oil & Gas | Irving, TX 75062 | Oil & Gas Operator | Mar 2015 |
| 531 | Sting Exploration Company | Tulsa, OK 74120 | Oil Operator | Sep 2004 |
| 532 | Stinger Oil & Gas Inc. | Sherman Oaks, CA 91403 | Oil & Gas Operator | Oct 2013 |
| 533 | STL Oil & Gas LLC | Skiatook, OK 74070 | Oil & Gas Operator | Mar 2016 |
| 534 | Stobaugh G B Trust | Oklahoma City, OK 73124 | Oil Operator | Aug 2025 |
| 535 | Stockyard Energy Partners, LLC | Calumet, OK 73014 | Oil Operator | Oct 2025 |
| 536 | Stokes Donna L | Blanchard, OK 73010 | Oil & Gas Operator | Jun 2023 |
| 537 | Stone Creek Operating, LLC | Oklahoma City, OK 73142 | Oil & Gas Operator | Dec 2025 |
| 538 | Stone Oak Operating LLC | Oklahoma City, OK 73120 | Oil & Gas Operator | Oct 2025 |
| 539 | Stone River Energy Corp | Edmond, OK 73034 | Oil & Gas Operator | Jan 2014 |
| 540 | Stone Thomas R | Coweta, OK 74429-3293 | Oil & Gas Operator | Mar 2020 |
| 541 | Stonegate Ranch LLC | Caney, KS 67333 | Oil Operator | Sep 2025 |
| 542 | Stoneridge Oil Inc | Ponca City, OK 74601-1600 | Oil & Gas Operator | Jan 2001 |
| 543 | Stoneriver Energy, LLC | Lubbock, TX 79424 | Oil & Gas Operator | Dec 2025 |
| 544 | Storck Omer | Tulsa, OK 74105 | Oil Operator | Apr 1997 |
| 545 | Storm Exploration Inc | Skiatook, OK 74070-1014 | Oil & Gas Operator | Jan 2013 |
| 546 | Story Oil And Gas Inc | Magnolia, AR 71753 | Oil & Gas Operator | Jan 2025 |
| 547 | Stover Company | Tulsa, OK 74152-0786 | Oil & Gas Operator | Jan 2013 |
| 548 | Stover Oil Company | Konawa, OK 74849-0216 | Oil & Gas Operator | Jul 2002 |
| 549 | STP Cherokee Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Mar 2014 |
| 550 | STP Newco Inc | Oklahoma City, OK 73102-5641 | Oil & Gas Operator | Jul 2021 |
| 551 | Strange, D. D. | Archer City, TX 76351 | Oil & Gas Operator | Sep 2014 |
| 552 | Strat Land Exploration Company | Tulsa, OK 74103 | Oil & Gas Operator | Oct 2025 |
| 553 | Strata Oil Corporation | Carmi, IL 62821 | Oil & Gas Operator | Jan 2002 |
| 554 | Stratco, Inc. | Edmond, OK 73013 | Oil & Gas Operator | Mar 2015 |
| 555 | Stratford Well Service Inc | Pond Creek, OK 73766-0310 | Oil Operator | Nov 2003 |
| 556 | Stream Energy, Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | Oct 2025 |
| 557 | Streamline Oil And Gas Inc | Lindsay, OK 73052 | Oil & Gas Operator | Nov 2025 |
| 558 | Stricker Resources Inc | Morris, OK 74445 | Oil & Gas Operator | Oct 2025 |
| 559 | Stride Energy LLC | Piedmont, OK 73078 | Oil & Gas Operator | Nov 2025 |
| 560 | Strike Axe Oil And Gas Corporation | | Oil & Gas Operator | Mar 2021 |
| 561 | Strike Energy Corporation | Blackwell, OK 74631 | Oil & Gas Operator | Jul 2023 |
| 562 | Strike Energy LLC | Burneyville, OK 73430 | Oil Operator | Oct 2025 |
| 563 | Striker Management Co LLC | Shawnee, OK 74801 | Oil & Gas Operator | Oct 2025 |
| 564 | Striker Petroleum Operations LLC | Frisco, TX 75034-2127 | Oil & Gas Operator | Nov 2014 |
| 565 | Stromquist C Dale | Liberal, KS 67901-2428 | Oil & Gas Operator | Jun 2006 |
| 566 | Stroud Oil Properties, Inc. | Fort Worth, TX 76102 | Oil & Gas Operator | May 2013 |
| 567 | Stroud Petroleum Company | Oklahoma City, OK 73156-0156 | Oil Operator | Jun 2014 |
| 568 | Struck Rock Oil And Gas LLC | Geary, OK 73040 | Oil & Gas Operator | Oct 2025 |
| 569 | Struthers Oil & Gas Corp | Tulsa, OK 74133 | Oil & Gas Operator | Jan 2013 |
| 570 | Stumpff Paul | Bartlesville, OK 74006-3426 | Oil & Gas Operator | Mar 2015 |
| 571 | Sturman Jay R | Mounds, OK 74047 | Oil & Gas Operator | Aug 2025 |
| 572 | Subsurface Minerals Group LLC | Tulsa, OK 74119-1635 | Oil & Gas Operator | Jan 2013 |
| 573 | Subterranean Energy, LLC | Tyler, TX 75705 | Oil & Gas Operator | Dec 2025 |
| 574 | Sudberry Mark E Dba Gushing Oil Co | Trophy Club, TX 76262-5531 | Oil Operator | Jan 2020 |
| 575 | Sullivan & Co. | Tulsa, OK 74114 | Oil & Gas Operator | May 2022 |
| 576 | Sullivan And Company LLC | Tulsa, OK 74119 | Oil & Gas Operator | Oct 2025 |
| 577 | Sullivan Jesse G | Duncan, OK 73533 | Oil Operator | May 1998 |
| 578 | Sullivan Nora M | Oklahoma City, OK 73139 | Oil Operator | Jan 1997 |
| 579 | Sullivan Wesley L | Duncan, OK 73533 | Oil & Gas Operator | Mar 2002 |
| 580 | Sullivan, Hollis R. Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Feb 2009 |
| 581 | Sullivant G W | Oklahoma City, OK 73172-1135 | Oil & Gas Operator | Aug 2001 |
| 582 | Sultex Oil & Gas Inc | Houston, TX 77059-3126 | Oil & Gas Operator | Aug 2002 |
| 583 | Summa Engineering Inc | Oklahoma City, OK 73112-3624 | Oil & Gas Operator | Mar 2015 |
| 584 | Summit Energy,Inc | Littleton, CO 80127 | Oil & Gas Operator | Aug 2013 |
| 585 | Summit Overseas Expl., Inc. | Denver, CO 80226 | Oil & Gas Operator | Apr 2007 |
| 586 | Summit Resources Management LLC | Edmond, OK 73083 | Oil & Gas Operator | Nov 2025 |
| 587 | Summit Resources, Inc. | Houston, TX 77077 | Oil & Gas Operator | Sep 2016 |
| 588 | Sumrall Sharon | Poolville, TX 76487-2065 | Oil & Gas Operator | Apr 2022 |
| 589 | Sun Amer Petro Resources Inc | Moore, OK 73153-7133 | Oil & Gas Operator | May 1993 |
| 590 | Sunbelt Oil Investments Inc | Lindsay, OK 73052 | Oil & Gas Operator | May 1993 |
| 591 | Suncoast Technical Service Inc | Plano, TX 75074-5438 | Oil Operator | Mar 2005 |
| 592 | Sundance Energy Oklahoma LLC Dba Seo LLC | Denver, CO 80202-3620 | Oil & Gas Operator | Nov 2021 |
| 593 | Sundance Operating Co | | Oil & Gas Operator | Jul 2016 |
| 594 | Sunday-Smith Mary E | Mannford, OK 74044-1457 | Oil & Gas Operator | Mar 2015 |
| 595 | Sundial Energy LLC | Oklahoma City, OK 73013 | Oil & Gas Operator | Oct 2025 |
| 596 | Sundown Energy LP | Dallas, TX 75248 | Oil & Gas Operator | Dec 2025 |
| 597 | Sundown Energy, Inc. | Dallas, TX 75240 | Oil & Gas Operator | May 2025 |
| 598 | Sunland Enterprises Corp | Norman, OK 73071 | Oil Operator | Sep 2004 |
| 599 | Sunlight Exploration, Inc. | Canyon, TX 79015 | Oil & Gas Operator | Dec 2025 |
| 600 | Sunset Energy L L C | Palm Harbor, FL 34683-3044 | Oil Operator | Dec 2007 |