| 1 | S & K Oil Company | Tulsa, OK 74101 | Oil & Gas Operator | Jul 1994 |
| 2 | Sackett James B | Hanna, OK 74845 | Oil Operator | Mar 2026 |
| 3 | Sam W Mays Jr LLC | Eureka, KS 67045 | Oil & Gas Operator | Apr 2018 |
| 4 | Samuel Joe L | Tulsa, OK 74135-7805 | Oil & Gas Operator | Jan 2001 |
| 5 | Sanford & Jenkins | Henryetta, OK 74437-1411 | Oil & Gas Operator | Mar 2015 |
| 6 | Seagull Operating Co., Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Jan 2025 |
| 7 | Sedna Energy LLC | Blanchard, OK 73010-8043 | Gas Operator | Apr 2017 |
| 8 | Select Operating Company Inc | Dallas, TX 75225 | Oil & Gas Operator | Mar 2014 |
| 9 | Sellers O N | Henryetta, OK 74437 | Oil & Gas Operator | May 1997 |
| 10 | Seminole Oil Productions LLC | Surprise, AZ 85387-2015 | Oil Operator | Apr 2020 |
| 11 | Semper Fidelis Oil & Gas, LLC | Allen, TX 75013 | Oil & Gas Operator | Apr 2013 |
| 12 | Senax Inc | Tulsa, OK 74105-2206 | Oil & Gas Operator | Apr 2026 |
| 13 | Sensor Oil & Gas, Inc. | Duncan, OK 73534 | Oil & Gas Operator | May 2013 |
| 14 | Settlers Corporation | Oklahoma City, OK 73116 | Oil & Gas Operator | Nov 2000 |
| 15 | Sevitski & Associates Inc | Pryor, OK 74361 | Oil & Gas Operator | Dec 2000 |
| 16 | Shadow-Del Oil Company | Kiefer, OK 74041-0453 | Oil & Gas Operator | Jul 2015 |
| 17 | Shallow Energy Inc | South Dennis, MA 2660 | Oil & Gas Operator | Feb 2025 |
| 18 | Shanks Drilling & Production Company LLC | Bixby, OK 74008 | Oil & Gas Operator | Mar 2026 |
| 19 | Shanks Robert "Bob" | Haskell, OK 74436-8809 | Oil & Gas Operator | Jun 2023 |
| 20 | Shannon Corporation Inc | Okmulgee, OK 74447-1323 | Oil & Gas Operator | Mar 2015 |
| 21 | Shannon Petroleum Inc | Tulsa, OK 74136-4603 | Oil & Gas Operator | Oct 2016 |
| 22 | Sharber Billy Jack Operating | Konawa, OK 74849-0071 | Oil & Gas Operator | Mar 2015 |
| 23 | Shelton Alec & Glenda | Kiefer, OK 74041 | Oil & Gas Operator | Aug 2025 |
| 24 | Shelton Brothers | Okmulgee, OK 74447-6110 | Oil & Gas Operator | Apr 2020 |
| 25 | Shepard James | Beggs, OK 74421 | Oil & Gas Operator | Feb 2024 |
| 26 | Sherrill Bob G | Tulsa, OK 74103 | Oil & Gas Operator | Jul 2015 |
| 27 | Shields Operating Inc | Fort Smith, AR 72901-3834 | Oil & Gas Operator | Oct 2021 |
| 28 | Shiloh E Hall | Okmulgee, OK 74447 | Oil Operator | Mar 2026 |
| 29 | Shockley Jimmie D | Morris, OK 74445-2754 | Oil Operator | Apr 2026 |
| 30 | Sicko Jaquetta Len | Muldoon, TX 78949 | Oil Operator | Mar 2026 |
| 31 | Silverado Oil LTD | Ardmore, OK 73401 | Oil & Gas Operator | Jun 2003 |
| 32 | Silvertin Farm Production LLC | Poteau, OK 74953 | Oil & Gas Operator | Apr 2020 |
| 33 | Simmons Donald M | Muskogee, OK 74401 | Oil & Gas Operator | May 2013 |
| 34 | Siosi Oil & Gas Company | Tulsa, OK 74170 | Oil & Gas Operator | Nov 2013 |
| 35 | Six "E" Trading Company | Henryetta, OK 74801 | Oil & Gas Operator | Sep 2020 |
| 36 | Slick Production Inc | Tulsa, OK 74132-1718 | Oil & Gas Operator | Apr 2020 |
| 37 | Slim Hole Inc | Farmington, NM 87401-7725 | Oil & Gas Operator | May 2013 |
| 38 | Smith Bart Oil & Gas Expl Inc | Council Hill, OK 74428-9603 | Oil & Gas Operator | Apr 2015 |
| 39 | Smith Bob W | Ardmore, OK 73403-5214 | Oil & Gas Operator | Sep 2014 |
| 40 | Smith Claude W | Henryetta, OK 74437-7553 | Oil Operator | May 2008 |
| 41 | Smith Joyce | Okmulgee, OK 74447-6074 | Oil Operator | Mar 2025 |
| 42 | Smith Richard L | Catoosa, OK 74015 | Oil & Gas Operator | Dec 2019 |
| 43 | Smith Vernon C | Tulsa, OK 74104 | Oil & Gas Operator | Sep 2025 |
| 44 | Smither Energy Co LLC | Broken Arrow, OK 74011-7615 | Oil & Gas Operator | Nov 2020 |
| 45 | Snake Creek Oil & Gas Inc | Okmulgee, OK 74447-2041 | Oil & Gas Operator | Dec 2025 |
| 46 | Snyder Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | Mar 2015 |
| 47 | Sooner Pipe & Supply Corp | | Oil & Gas Operator | Nov 2004 |
| 48 | Southbrook Energies Inc | Tulsa, OK 74153 | Oil Operator | Feb 2004 |
| 49 | Southstar Oil And Gas Inc | Andover, KS 67002-0123 | Oil & Gas Operator | Jul 2020 |
| 50 | SP Energy Development Company | Seattle, WA 98101-3277 | Oil & Gas Operator | Mar 2015 |
| 51 | Sparks Resources Inc | Bristow, OK 74010 | Oil & Gas Operator | Apr 2026 |
| 52 | Spectrum Oil Company | Irving, TX 75063 | Oil & Gas Operator | May 2013 |
| 53 | Sperry R J | Dallas, TX 75254-8647 | Oil & Gas Operator | Aug 2013 |
| 54 | Spess Oil Company Inc | Cleveland, OK 74020-4617 | Oil & Gas Operator | Apr 2026 |
| 55 | Spring Tide Petroleum Inc | Broken Arrow, OK 74011-6651 | Oil & Gas Operator | Oct 2025 |
| 56 | Stargas Co | Tulsa, OK 74136-5407 | Oil & Gas Operator | Aug 2013 |
| 57 | Starks Leslie | Wetumka, OK 74883-0003 | Oil & Gas Operator | Oct 1995 |
| 58 | Sterling Oil Of Okla Inc | Tulsa, OK 74170-2163 | Oil & Gas Operator | Nov 2006 |
| 59 | Stewart Operating | | Oil Operator | Jul 2019 |
| 60 | Stricker Resources Inc | Morris, OK 74445 | Oil & Gas Operator | Mar 2026 |
| 61 | Striker Management Co LLC | Shawnee, OK 74801 | Oil & Gas Operator | Mar 2026 |
| 62 | Sturman Jay R | Mounds, OK 74047 | Oil & Gas Operator | Aug 2025 |
| 63 | Sullivan And Company LLC | Tulsa, OK 74119 | Oil & Gas Operator | Mar 2026 |
| 64 | Swenton Michael J | Tulsa, OK 74105 | Oil & Gas Operator | Apr 2026 |
| 65 | Sydson D'Oro Exploration Co. | Houston, TX 77079 | Oil & Gas Operator | Jan 1992 |