| 501 | Staggs Richard | | Oil & Gas Operator | Oct 2011 |
| 502 | Staghorn Energy, LLC | Tulsa, OK 74103 | Oil & Gas Operator | Dec 2024 |
| 503 | Staghorn Petroleum II LLC | Tulsa, OK 74103-3500 | Oil & Gas Operator | Jan 2025 |
| 504 | Staghorn Petroleum LLC | Tulsa, OK 74103-3500 | Oil & Gas Operator | Dec 2024 |
| 505 | Staghorn Resources, LLC | Tulsa, OK 74103 | Oil & Gas Operator | Apr 2015 |
| 506 | Stallion Energy, Inc. | Houston, TX 77060 | Oil & Gas Operator | Oct 2017 |
| 507 | Stalnaker Oil Company | Maud, OK 74854-0295 | Oil Operator | May 2017 |
| 508 | Stalwart Energy Co | Tulsa, OK 74103-3518 | Oil & Gas Operator | Apr 2014 |
| 509 | Stamic Oil LLC | Duncan, OK 73534-1898 | Oil & Gas Operator | Oct 2021 |
| 510 | Standard Energy Inc | | Oil Operator | Feb 1997 |
| 511 | Stanolind Operating LLC | Midland, TX 79702 | Oil & Gas Operator | Apr 2021 |
| 512 | Stanton Joni Dba Stanton Oil | Wynona, OK 74084 | Oil Operator | Sep 2024 |
| 513 | Stanton Leo F & Leo H | Wynona, OK 74084 | Oil & Gas Operator | Jun 1999 |
| 514 | Star Oil Company | Wichita, KS 67230 | Oil & Gas Operator | Aug 2024 |
| 515 | Star Resources LLC | Englewood, CO 80155-5185 | Oil & Gas Operator | Dec 2013 |
| 516 | Star Royalty Company | Oklahoma City, OK 73177 | Gas Operator | Sep 1998 |
| 517 | Starbrite Energy LLC | Enid, OK 73702-0549 | Oil & Gas Operator | Oct 2018 |
| 518 | Stargas Co | Tulsa, OK 74136-5407 | Oil & Gas Operator | Aug 2013 |
| 519 | Stark Oil Properties | Asher, OK 74826 | Oil & Gas Operator | Jan 1997 |
| 520 | Starks Leslie | Wetumka, OK 74883-0003 | Oil & Gas Operator | Oct 1995 |
| 521 | Startex Energy, Inc. | Abilene, TX 79608 | Oil & Gas Operator | Mar 2025 |
| 522 | State Oil Company | | Oil & Gas Operator | Mar 2006 |
| 523 | Statex Operating, LLC | Dallas, TX 75229 | Oil & Gas Operator | Mar 2007 |
| 524 | Statex Petroleum Inc | Dallas, TX 75229 | Oil & Gas Operator | Dec 2000 |
| 525 | Statoil Oil & Gas LP | Austin, TX 78730 | Oil & Gas Operator | Oct 2018 |
| 526 | Staub, Larry, Inc. | Azle, TX 76020 | Oil & Gas Operator | Mar 2025 |
| 527 | Stauros Operating Company | Edmond, OK 73083-2707 | Oil & Gas Operator | Mar 2001 |
| 528 | STB Energy Inc. | Tulsa, OK 74105 | Oil & Gas Operator | Jul 2008 |
| 529 | Stedman Oil & Gas LLC | Hobart, OK 73651-1624 | Oil & Gas Operator | Mar 2015 |
| 530 | Steele Jr Guy M Test Trust | Dallas, TX 75214-3756 | Gas Operator | Mar 2018 |
| 531 | Steele VIctor Patterson | Wewoka, OK 74884-0560 | Oil & Gas Operator | Jan 2001 |
| 532 | Stephen Michael Inc | Midwest City, OK 73130-5200 | Oil & Gas Operator | Oct 2015 |
| 533 | Stephens & Johnson Operating Co. | Wichita Falls, TX 76307 | Oil & Gas Operator | Mar 2025 |
| 534 | Stephens Energy Group LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Nov 2024 |
| 535 | Stephens Exploration, Inc. | Dallas, TX 75367 | Oil & Gas Operator | Jan 2025 |
| 536 | Stephens Operating Inc | Ardmore, OK 73401 | Oil & Gas Operator | Sep 2014 |
| 537 | Stephens Production Company | The Woodlands, TX 77381 | Oil & Gas Operator | Jan 2025 |
| 538 | Stephens, Autry C. | Midland, TX 79701 | Oil & Gas Operator | Mar 2023 |
| 539 | Stephenson W W Pet Corp | Edmond, OK 73003-0014 | Oil & Gas Operator | Jul 2017 |
| 540 | Sterling Oil Of Okla Inc | Tulsa, OK 74170-2163 | Oil & Gas Operator | Nov 2006 |
| 541 | Sterling Properties Inc | Lawton, OK 73501-9601 | Oil Operator | Jan 2025 |
| 542 | Stesco Operating Company LLC | Oklahoma City, OK 73120 | Oil & Gas Operator | Dec 2024 |
| 543 | Stetson Energy Corporation | Duncan, OK 73534-0098 | Oil & Gas Operator | Mar 2015 |
| 544 | Steven Cornelius | Collinsville, OK 74021 | Oil Operator | Sep 2015 |
| 545 | Stevens & Tull, Inc. | Midland, TX 79702 | Oil & Gas Operator | Jun 2000 |
| 546 | Stevens Quincy O | Oklahoma City, OK 73116-4102 | Oil & Gas Operator | Dec 2019 |
| 547 | Stevenson Oil Company, Inc. | Lovington, NM 88260 | Oil & Gas Operator | Jan 2025 |
| 548 | Stewart Inc | Ringling, OK 73456 | Oil & Gas Operator | Jan 2025 |
| 549 | Stewart K Petroleum Corp | Edmond, OK 73013 | Oil & Gas Operator | Mar 2015 |
| 550 | Stewart Morris E Oil Company | Oklahoma City, OK 73132 | Oil & Gas Operator | Jan 2013 |
| 551 | Stewart Morris E Operating Co LLC | Oklahoma City, OK 73172-0600 | Oil & Gas Operator | Jul 2008 |
| 552 | Stewart Oil & Gas Investments Inc | Porum, OK 74455 | Gas Operator | Jan 2025 |
| 553 | Stewart Operating | | Oil Operator | Jul 2019 |
| 554 | Stidham Bob And Alice F | Sperry, OK 74073 | Oil Operator | Dec 2024 |
| 555 | Stigler Gas Company | Stigler, OK 74462 | Gas Operator | Oct 2024 |
| 556 | Still A B Wel-Service Inc | Drumright, OK 74030-0787 | Oil & Gas Operator | Jul 2019 |
| 557 | Still Alex B Estate Of | Sagle, ID 83860-0644 | Oil & Gas Operator | Nov 2018 |
| 558 | Stillwater Oil & Gas | Irving, TX 75062 | Oil & Gas Operator | Mar 2015 |
| 559 | Sting Exploration Company | Tulsa, OK 74120 | Oil Operator | Sep 2004 |
| 560 | Stinger Oil & Gas Inc. | Sherman Oaks, CA 91403 | Oil & Gas Operator | Oct 2013 |
| 561 | STL Oil & Gas LLC | Skiatook, OK 74070 | Oil & Gas Operator | Mar 2016 |
| 562 | Stobaugh G B Trust | Oklahoma City, OK 73124 | Oil Operator | Dec 2024 |
| 563 | Stockyard Energy Partners, LLC | Calumet, OK 73014 | Oil Operator | Jan 2025 |
| 564 | Stokes Donna L | Blanchard, OK 73010 | Oil & Gas Operator | Jun 2023 |
| 565 | Stoltz Wagner & Brown | | Oil Operator | Nov 1998 |
| 566 | Stone Creek Energy Company LLC | Pawnee, OK 74058-0282 | Oil & Gas Operator | Feb 2019 |
| 567 | Stone Creek Operating, LLC | Oklahoma City, OK 73142 | Oil & Gas Operator | Mar 2025 |
| 568 | Stone Oak Operating LLC | Oklahoma City, OK 73120 | Oil & Gas Operator | Jan 2025 |
| 569 | Stone River Energy Corp | Edmond, OK 73034 | Oil & Gas Operator | Jan 2014 |
| 570 | Stone Thomas R | Coweta, OK 74429-3293 | Oil & Gas Operator | Mar 2020 |
| 571 | Stonegate Ranch LLC | Caney, KS 67333 | Oil Operator | Nov 2024 |
| 572 | Stoneridge Oil Inc | Ponca City, OK 74601-1600 | Oil & Gas Operator | Jan 2001 |
| 573 | Stoneriver Energy, LLC | Lubbock, TX 79424 | Oil & Gas Operator | Mar 2025 |
| 574 | Storck Omer | Tulsa, OK 74105 | Oil Operator | Apr 1997 |
| 575 | Storm Exploration Inc | Skiatook, OK 74070-1014 | Oil & Gas Operator | Jan 2013 |
| 576 | Story Oil And Gas Inc | Magnolia, AR 71753 | Oil & Gas Operator | Dec 2024 |
| 577 | Stover Company | Tulsa, OK 74152-0786 | Oil & Gas Operator | Jan 2013 |
| 578 | Stover Oil Company | Konawa, OK 74849-0216 | Oil & Gas Operator | Jul 2002 |
| 579 | STP Cherokee, Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | Mar 2014 |
| 580 | STP Newco Inc | Oklahoma City, OK 73102-5641 | Oil & Gas Operator | Jul 2021 |
| 581 | Strange, D. D. | Archer City, TX 76351 | Oil & Gas Operator | Sep 2014 |
| 582 | Strat Land Exploration Company | Tulsa, OK 74103 | Oil & Gas Operator | Dec 2024 |
| 583 | Strata Oil Corporation | Carmi, IL 62821 | Oil & Gas Operator | Jan 2002 |
| 584 | Stratco, Inc. | Edmond, OK 73013 | Oil & Gas Operator | Mar 2015 |
| 585 | Stratford Well Service Inc | Pond Creek, OK 73766-0310 | Oil Operator | Nov 2003 |
| 586 | Stream Energy, Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | Dec 2024 |
| 587 | Streamline Oil And Gas Inc | Lindsey, OK 73052 | Oil & Gas Operator | Jan 2025 |
| 588 | Stricker Resources Inc | Morris, OK 74445 | Oil & Gas Operator | Dec 2024 |
| 589 | Stride Energy LLC | Piedmont, OK 73078 | Oil & Gas Operator | Jan 2025 |
| 590 | Strike Axe Oil And Gas Corporation | | Oil & Gas Operator | Mar 2021 |
| 591 | Strike Energy Corp | Blackwell, OK 74631 | Oil & Gas Operator | Jul 2023 |
| 592 | Strike Energy LLC | Burneyville, OK 73430 | Oil Operator | Dec 2024 |
| 593 | Striker Management Co LLC | Shawnee, OK 74801 | Oil & Gas Operator | Dec 2024 |
| 594 | Striker Petroleum Operations LLC | Frisco, TX 75034-2127 | Oil & Gas Operator | Nov 2014 |
| 595 | Stromquist C Dale | Liberal, KS 67901-2428 | Oil & Gas Operator | Jun 2006 |
| 596 | Stroud Oil Properties, Inc. | Fort Worth, TX 76102 | Oil & Gas Operator | May 2013 |
| 597 | Stroud Petroleum Company | Oklahoma City, OK 73156-0156 | Oil Operator | Jun 2014 |
| 598 | Struck Rock Oil And Gas LLC | Geary, OK 73040 | Oil & Gas Operator | Dec 2024 |
| 599 | Struthers Oil & Gas Corp | Tulsa, OK 74133 | Oil & Gas Operator | Jan 2013 |
| 600 | Stumpff Paul | Bartlesville, OK 74006-3426 | Oil & Gas Operator | Mar 2015 |