| 701 | Roan Resources LLC | Tulsa, OK 74103-3729 | Oil & Gas Operator | Apr 2024 |
| 702 | Roberson Oil Company | Houston, TX 77046 | Oil & Gas Operator | Dec 2025 |
| 703 | Robinson Oil Co. | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 704 | Robinson Operating Company | Abilene, TX 79604 | Oil & Gas Operator | Aug 2012 |
| 705 | Robinson Tracy D | Duncan, OK 73534 | Oil Operator | Oct 2018 |
| 706 | Rocket Oil Company | Duncan, OK 73534 | Oil & Gas Operator | Apr 2015 |
| 707 | Romax Corporation | Ardmore, OK 73401-8882 | Oil & Gas Operator | Feb 2022 |
| 708 | Roring Jr Roy W | Duncan, OK 73533-3048 | Oil & Gas Operator | Aug 2022 |
| 709 | Roring Roy W | Ardmore, OK 73401 | Oil & Gas Operator | Dec 1998 |
| 710 | Rose Operating Company | Tulsa, OK 74101-2391 | Oil & Gas Operator | Dec 2014 |
| 711 | Rosewood Resources Inc | Dallas, TX 75201 | Oil & Gas Operator | Feb 2026 |
| 712 | Roundup Oil LLC | Springer, OK 73458 | Oil & Gas Operator | Dec 2025 |
| 713 | Rox Exploration Inc | Norman, OK 73069-6301 | Oil & Gas Operator | Nov 2025 |
| 714 | RPM Oilfield Services LLC | Lindsay, OK 73052-8005 | Oil & Gas Operator | Nov 2025 |
| 715 | Rue Johnny B | Duncan, OK 73533-2019 | Oil & Gas Operator | Jan 2025 |
| 716 | Russell, John R | | Oil Operator | Mar 2025 |
| 717 | S & S Oil Company | Electra, TX 76360 | Oil & Gas Operator | Feb 2026 |
| 718 | S & S Star Operating, LLC | Oklahoma City, OK 73101 | Oil & Gas Operator | Jun 2023 |
| 719 | S & W Transports Inc | Velma, OK 73491 | Oil Operator | Nov 2025 |
| 720 | Sabre Operating, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Feb 2026 |
| 721 | Sajac Energy Company LLC | Duncan, OK 73533 | Oil & Gas Operator | Dec 2025 |
| 722 | Samedan Oil Corporation | Houston, TX 77067 | Oil & Gas Operator | Dec 2019 |
| 723 | Samson Hydrocarbons Company | Tulsa, OK 74103 | Oil & Gas Operator | Nov 2016 |
| 724 | Samson Resources Company | Tulsa, OK 74103 | Oil & Gas Operator | Nov 2025 |
| 725 | Sanguine Gas Exploration, LLC | Tulsa, OK 74119 | Oil & Gas Operator | Feb 2026 |
| 726 | Sanner Jeffrey B Dba Bryant Lyn Production | Velma, OK 73491 | Oil Operator | Sep 2025 |
| 727 | Sanner Oil Co LLC | Duncan, OK 73533 | Oil Operator | Nov 2025 |
| 728 | Sanner Oil Company | Velma, OK 73491-0550 | Oil & Gas Operator | Jan 2014 |
| 729 | Sanook Inc | Oklahoma City, OK 73156-0548 | Oil & Gas Operator | Jan 2007 |
| 730 | Sanquip LLC | Oklahoma City, OK 73106 | Oil & Gas Operator | Sep 2024 |
| 731 | Santa Rita Resources Inc & Subs | | Oil & Gas Operator | Mar 2015 |
| 732 | Scout Energy Corporation | Edmond, OK 73083-1348 | Oil & Gas Operator | Nov 2025 |
| 733 | Seagull Energy E & P Inc | Houston, TX 77002 | Oil & Gas Operator | Jan 2015 |
| 734 | Seagull Mid-South Inc | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 735 | Seals And Brown Oil Operating | Norman, OK 73072-3020 | Oil & Gas Operator | Sep 2024 |
| 736 | Seals Oil Company | Fox, OK 73435-0222 | Oil & Gas Operator | Nov 2011 |
| 737 | Sean M Sharp LLC | Chalk Hill, PA 15421 | Oil & Gas Operator | Mar 2025 |
| 738 | Seaport Inc | Oklahoma City, OK 73131 | Oil & Gas Operator | Nov 2025 |
| 739 | Senico Production Company | Irving, TX 75016-5229 | Oil & Gas Operator | Mar 2002 |
| 740 | Shell Western Expl & Prod Inc | Houston, TX 77251 | Oil & Gas Operator | Mar 2015 |
| 741 | Shoshone Oil And Gas Inc | Lindsay, OK 73052-0217 | Oil & Gas Operator | Jan 2020 |
| 742 | Signature Exploration Inc. | Shawnee, OK 74804-4130 | Oil & Gas Operator | Mar 2015 |
| 743 | Sikes Oil Company Inc | Velma, OK 73091-0759 | Oil & Gas Operator | Jan 2014 |
| 744 | Silver Creek Oil & Gas, LLC | Flower Mound, TX 75022 | Oil & Gas Operator | Feb 2026 |
| 745 | Silvertin Farm Production LLC | Tulsa, OK 74137 | Oil & Gas Operator | Apr 2020 |
| 746 | Simmons, L.B. Energy, Inc. | Midland, TX 79705 | Oil & Gas Operator | Nov 2000 |
| 747 | Sinclair Oil & Gas Company | Salt Lake Cty, UT 84130 | Oil & Gas Operator | Feb 2026 |
| 748 | Singer Oil Company | Oklahoma City, OK 73148 | Oil & Gas Operator | Oct 2025 |
| 749 | Singer-Fleischaker Oil Op Co | Oklahoma City, OK 73102 | Oil & Gas Operator | Apr 2002 |
| 750 | Slawson Donald C | Wichita, KS 67202 | Oil & Gas Operator | Apr 2025 |
| 751 | Slawson Exploration Company Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Feb 2026 |
| 752 | Sledge Olen | Duncan, OK 73533 | Oil Operator | Nov 2025 |
| 753 | SM Energy Company | Midland, TX 79707 | Oil & Gas Operator | Feb 2026 |
| 754 | Smart Jr T J | Ryan, OK 73565 | Oil Operator | Sep 1994 |
| 755 | Smith Al | Duncan, OK 73534-0037 | Oil Operator | Dec 1998 |
| 756 | Smith Energy Company LLC | Purcell, OK 73080-4772 | Oil & Gas Operator | May 2015 |
| 757 | Smith Harmon K | Wewoka, OK 74884 | Oil & Gas Operator | Jan 2013 |
| 758 | Smokey Trail LLC | Thornton, CO 80241 | Oil & Gas Operator | Dec 2025 |
| 759 | Snyder Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | Mar 2015 |
| 760 | Song Production Company | Lindsay, OK 73052-0369 | Oil & Gas Operator | Jun 2015 |
| 761 | Sonny'S Tank Trucks Inc | Ratliff City, OK 73481 | Oil Operator | Nov 2025 |
| 762 | Sooner Exploration & Development Co Inc | Enid, OK 73702-3525 | Oil & Gas Operator | Oct 2023 |
| 763 | Sooner Trend Exploration Inc | Kingfisher, OK 73750-4752 | Oil & Gas Operator | Dec 2015 |
| 764 | Southerland Jackie Dale Dba Skyden Oil | Duncan, OK 73533-5392 | Oil & Gas Operator | Dec 2025 |
| 765 | Southerland Joe Don Dba Taylor Oil Co | Duncan, OK 73533 | Oil & Gas Operator | Nov 2025 |
| 766 | Southerland Marquieta Dba Keta Oil Company | Loco, OK 73442 | Oil & Gas Operator | Nov 2025 |
| 767 | Southern Production Co Inc | Madill, OK 73446 | Oil & Gas Operator | Nov 2025 |
| 768 | Southland Royalty Company | Houston, TX 77210 | Oil & Gas Operator | Sep 2011 |
| 769 | Southwest Royalties, Inc. | Midland, TX 79710 | Oil & Gas Operator | Feb 2026 |
| 770 | Southwestern Exploration Consultants Inc | Oklahoma City, OK 73118-1116 | Oil & Gas Operator | Nov 2025 |
| 771 | Sparks Petroleum Company | Oklahoma City, OK 73128 | Oil & Gas Operator | Mar 1998 |
| 772 | Sparks Resources Inc | Bristow, OK 74010 | Oil & Gas Operator | Dec 2025 |
| 773 | Sparrow Operating LLC | Comanche, OK 73529-9747 | Oil Operator | Nov 2025 |
| 774 | Spartan Resources LLC | Oklahoma City, OK 73116 | Oil & Gas Operator | Dec 2025 |
| 775 | Special Energy Corp. | Stillwater, OK 74076 | Oil & Gas Operator | Feb 2026 |
| 776 | Spectrum Field Services Inc | Tulsa, OK 74136-3400 | Oil & Gas Operator | Jan 2004 |
| 777 | Spess Oil Company Inc | Cleveland, OK 74020-4617 | Oil & Gas Operator | Dec 2025 |
| 778 | Spitfire Energy Group LLC | Oklahoma City, OK 73114-7444 | Oil Operator | Apr 2023 |
| 779 | Splawn & Splawn | Saint Louis, OK 74866-0098 | Oil & Gas Operator | Mar 2025 |
| 780 | Spragins Ed S | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 2025 |
| 781 | Spring Operating Company | Edmond, OK 73034 | Oil & Gas Operator | Dec 2025 |
| 782 | Spruiell Drilling Co., Inc. | Holliday, TX 76366 | Oil & Gas Operator | Feb 2026 |
| 783 | Spur Operating Co. | Austin, TX 78701 | Oil & Gas Operator | Feb 2026 |
| 784 | SRW Operating LLC | Duncan, OK 73534-2087 | Oil & Gas Operator | Sep 2014 |
| 785 | SSB Production LC | Ardmore, OK 73401 | Oil & Gas Operator | Nov 2025 |
| 786 | St. Mary Operating Company | Denver, CO 80203 | Oil & Gas Operator | Mar 2019 |
| 787 | Staghorn Energy, LLC | Tulsa, OK 74103 | Oil & Gas Operator | Nov 2025 |
| 788 | Stamic Oil LLC | Duncan, OK 73534-1898 | Oil & Gas Operator | Oct 2021 |
| 789 | Staub, Larry, Inc. | Azle, TX 76020 | Oil & Gas Operator | Feb 2026 |
| 790 | Steele VIctor Patterson | Wewoka, OK 74884-0560 | Oil & Gas Operator | Jan 2001 |
| 791 | Stephens & Johnson Operating Co. | Wichita Falls, TX 76307 | Oil & Gas Operator | Feb 2026 |
| 792 | Stephens Production Company | The Woodlands, TX 77381 | Oil & Gas Operator | Dec 2025 |
| 793 | Stesco Operating Company LLC | Oklahoma City, OK 73120 | Oil & Gas Operator | Oct 2025 |
| 794 | Stone River Energy Corp | Edmond, OK 73034 | Oil & Gas Operator | Jan 2014 |
| 795 | Stoneriver Energy, LLC | Lubbock, TX 79424 | Oil & Gas Operator | Feb 2026 |
| 796 | Streamline Oil And Gas Inc | Lindsay, OK 73052 | Oil & Gas Operator | Dec 2025 |
| 797 | Stromquist C Dale | Liberal, KS 67901-2428 | Oil & Gas Operator | Jun 2006 |
| 798 | Sudberry Mark E Dba Gushing Oil Co | Trophy Club, TX 76262-5531 | Oil Operator | Jan 2020 |
| 799 | Sullivan Wesley L | Duncan, OK 73533 | Oil & Gas Operator | Mar 2002 |
| 800 | Sundown Energy LP | Dallas, TX 75248 | Oil & Gas Operator | Feb 2026 |