| 1 | S & H Tank Service Of Okla | Lindsay, OK 73052 | Oil & Gas Operator | Mar 2017 |
| 2 | Sajac Energy Company LLC | Duncan, OK 73533 | Oil & Gas Operator | Jan 2026 |
| 3 | Salt Creek Production, Inc. | Big Spring, TX 79721 | Oil & Gas Operator | Apr 2026 |
| 4 | Samedan Oil Corporation | Houston, TX 77067 | Oil & Gas Operator | Dec 2019 |
| 5 | Samson Hydrocarbons Company | Tulsa, OK 74103 | Oil & Gas Operator | Nov 2016 |
| 6 | Samson Resources Company | Tulsa, OK 74103 | Oil & Gas Operator | Jan 2026 |
| 7 | San Francisco-Okla Pet Ex Inc | | Oil & Gas Operator | Apr 2014 |
| 8 | Sand Point Production Inc | Oklahoma City, OK 73172 | Oil & Gas Operator | Jan 2026 |
| 9 | Sanguine Gas Exploration, LLC | Tulsa, OK 74119 | Oil & Gas Operator | Apr 2026 |
| 10 | Sanook Inc | Oklahoma City, OK 73156-0548 | Oil & Gas Operator | Jan 2007 |
| 11 | Santa Fe Energy Company | Midland, TX 79701 | Oil & Gas Operator | Dec 2015 |
| 12 | Saqus Oil Co | Oklahoma City, OK 73107 | Oil & Gas Operator | May 2001 |
| 13 | Sasakwa Operating LLC | Oklahoma City, OK 73179-1902 | Oil & Gas Operator | Jan 2026 |
| 14 | Scissortail Exploration & Production, LLC | Tulsa, OK 74136 | Oil & Gas Operator | Jan 2026 |
| 15 | Seaboard Gas Company | Edmond, OK 73034 | Oil & Gas Operator | Feb 1999 |
| 16 | Seagull Midcon Inc. | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 17 | Seagull Operating Co., Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Jan 2025 |
| 18 | Sean M Sharp LLC | Chalk Hill, PA 15421 | Oil & Gas Operator | Oct 2025 |
| 19 | Seaport Inc | Oklahoma City, OK 73131 | Oil & Gas Operator | Jan 2026 |
| 20 | Senico Production Company | Irving, TX 75016-5229 | Oil & Gas Operator | Mar 2002 |
| 21 | Settlers Energy Corporation | Oklahoma City, OK 73113 | Oil & Gas Operator | Apr 1998 |
| 22 | Seven J Oil Inc | Jenning, OK 74038-9729 | Oil & Gas Operator | Sep 2025 |
| 23 | Seventh Corporation The | Oklahoma City, OK 73107 | Oil & Gas Operator | May 2006 |
| 24 | Shadowpeak Operating LLC | Oklahoma City, OK 73159-6905 | Oil & Gas Operator | Jan 2026 |
| 25 | Shamrock Well Operations LLC | Oklahoma City, OK 73118-4015 | Oil & Gas Operator | Feb 2026 |
| 26 | Sharber Billy Jack Operating | Konawa, OK 74849-0071 | Oil & Gas Operator | Mar 2015 |
| 27 | Shaw Thomas P | Tulsa, OK 74105-7327 | Oil & Gas Operator | Mar 2015 |
| 28 | Shebester Inc | Maysville, OK 73057 | Oil & Gas Operator | Nov 1998 |
| 29 | Shelter Petroleum,Inc | | Oil & Gas Operator | Jun 2014 |
| 30 | Sheridan Production Company, LLC | Houston, TX 77056 | Oil & Gas Operator | Jan 2026 |
| 31 | Shield Operating Co. | Georgetown, TX 78627 | Oil & Gas Operator | Aug 2003 |
| 32 | Shoreline Operating LLC | Oklahoma City, OK 73113 | Oil & Gas Operator | Feb 2026 |
| 33 | Shoshone Oil And Gas Inc | Lindsay, OK 73052-0217 | Oil & Gas Operator | Jan 2020 |
| 34 | Signal Hill Expl & Pet Inc | Duncan, OK 73533 | Oil & Gas Operator | Mar 2015 |
| 35 | Sikes Oil Company Inc | Velma, OK 73091-0759 | Oil & Gas Operator | Jan 2014 |
| 36 | Simmons, L.B. Energy, Inc. | Midland, TX 79705 | Oil & Gas Operator | Nov 2000 |
| 37 | Singer Oil Company | Oklahoma City, OK 73148 | Oil & Gas Operator | Jan 2026 |
| 38 | Singer-Fleischaker Oil Op Co | Oklahoma City, OK 73102 | Oil & Gas Operator | Apr 2002 |
| 39 | Slawson Exploration Company Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Apr 2026 |
| 40 | Smiley Drilling Co | Oklahoma City, OK 73156-0773 | Oil & Gas Operator | Apr 1999 |
| 41 | SND Operating, L.L.C. | Kilgore, TX 75663 | Oil & Gas Operator | Apr 2026 |
| 42 | Snelgrooes Oil Company Inc | Maysville, OK 73057-0631 | Oil & Gas Operator | Nov 2014 |
| 43 | Snelgrooes Well Service Inc | Elmore City, OK 73433 | Oil & Gas Operator | May 2003 |
| 44 | Snuffy'S Oilfield Service Inc | Hennessey, OK 73742-6511 | Oil & Gas Operator | Nov 2014 |
| 45 | Snyder Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | Mar 2015 |
| 46 | Sonata Oil & Gas Corp Inc | Stratford, OK 74812 | Oil & Gas Operator | Apr 2014 |
| 47 | Song Production Company | Lindsay, OK 73052-0369 | Oil & Gas Operator | Jun 2015 |
| 48 | Sooner Energy LLC | Norman, OK 73069 | Oil & Gas Operator | Sep 2005 |
| 49 | Sooner Exploration & Development Co Inc | Enid, OK 73702-3525 | Oil & Gas Operator | Oct 2023 |
| 50 | Southcreek Petroleum Co LLC | Blanchard, OK 73010-4911 | Oil & Gas Operator | Feb 2026 |
| 51 | Southern Resources Inc | Oklahoma City, OK 73118-4821 | Oil & Gas Operator | Jan 2026 |
| 52 | Southwest Energy LP | Tulsa, OK 74136 | Oil & Gas Operator | Dec 2025 |
| 53 | Southwest Royalties, Inc. | Midland, TX 79710 | Oil & Gas Operator | Apr 2026 |
| 54 | Southwestern Exploration Consultants Inc | Oklahoma City, OK 73118-1116 | Oil & Gas Operator | Feb 2026 |
| 55 | Sparks Resources Inc | Bristow, OK 74010 | Oil & Gas Operator | Feb 2026 |
| 56 | Sparlin J L | Oklahoma City, OK 73156-1446 | Oil Operator | Feb 2026 |
| 57 | Special Energy Corp. | Stillwater, OK 74076 | Oil & Gas Operator | Apr 2026 |
| 58 | Spectrum Field Services Inc | Tulsa, OK 74136-3400 | Oil & Gas Operator | Jan 2004 |
| 59 | Speed James F | Ada, OK 74821-1221 | Oil & Gas Operator | Nov 2009 |
| 60 | Spindletop Oil & Gas Co. | Dallas, TX 75230 | Oil & Gas Operator | Apr 2026 |
| 61 | Spring Operating Company | Edmond, OK 73034 | Oil & Gas Operator | Feb 2026 |
| 62 | SSB Production LC | Ardmore, OK 73401 | Oil & Gas Operator | Jan 2026 |
| 63 | St Oil Company LLC | New York, NY 10005-4016 | Oil Operator | Jan 2026 |
| 64 | Staghorn Energy, LLC | Tulsa, OK 74103 | Oil & Gas Operator | Jan 2026 |
| 65 | Stalwart Energy Co | Tulsa, OK 74103-3518 | Oil & Gas Operator | Apr 2014 |
| 66 | Stanolind Operating LLC | Midland, TX 79702 | Oil & Gas Operator | Apr 2021 |
| 67 | STB Energy Inc. | Tulsa, OK 74105 | Oil & Gas Operator | Jul 2008 |
| 68 | Stephens & Johnson Operating Co. | Wichita Falls, TX 76307 | Oil & Gas Operator | Apr 2026 |
| 69 | Stesco Operating Company LLC | Oklahoma City, OK 73120 | Oil & Gas Operator | Jan 2026 |
| 70 | Stetson Energy Corporation | Duncan, OK 73534-0098 | Oil & Gas Operator | Mar 2015 |
| 71 | Stewart Inc | Ringling, OK 73456 | Oil & Gas Operator | Feb 2026 |
| 72 | Stewart Morris E Oil Company | Oklahoma City, OK 73132 | Oil & Gas Operator | Jan 2013 |
| 73 | Stewart Morris E Operating Co LLC | Oklahoma City, OK 73172-0600 | Oil & Gas Operator | Jul 2008 |
| 74 | Stone River Energy Corp | Edmond, OK 73034 | Oil & Gas Operator | Jan 2014 |
| 75 | Stoneriver Energy, LLC | Lubbock, TX 79424 | Oil & Gas Operator | Apr 2026 |
| 76 | Stratco, Inc. | Edmond, OK 73013 | Oil & Gas Operator | Mar 2015 |
| 77 | Stratford Well Service Inc | Pond Creek, OK 73766-0310 | Oil Operator | Nov 2003 |
| 78 | Stream Energy, Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | Dec 2025 |
| 79 | Streamline Oil And Gas Inc | Lindsay, OK 73052 | Oil & Gas Operator | Feb 2026 |
| 80 | Stroud Petroleum Company | Oklahoma City, OK 73156-0156 | Oil Operator | Jun 2014 |
| 81 | Struthers Oil & Gas Corp | Tulsa, OK 74133 | Oil & Gas Operator | Jan 2013 |
| 82 | Sullivan Jesse G | Duncan, OK 73533 | Oil Operator | May 1998 |
| 83 | Sullivan Wesley L | Duncan, OK 73533 | Oil & Gas Operator | Mar 2002 |
| 84 | Sullivant G W | Oklahoma City, OK 73172-1135 | Oil & Gas Operator | Aug 2001 |
| 85 | Sunbelt Oil Investments Inc | Lindsay, OK 73052 | Oil & Gas Operator | May 1993 |
| 86 | Suoco Oil Corporation | Pampa, TX 79066 | Oil & Gas Operator | Apr 2026 |
| 87 | Superior Oil Co. | Denver, CO 80217-5444 | Oil & Gas Operator | Feb 2001 |
| 88 | Superior Production MGMT Inc | Calumet, OK 73014 | Oil & Gas Operator | Mar 2015 |
| 89 | Survivor Oil Inc | Tulsa, OK 74133 | Oil & Gas Operator | Sep 2007 |
| 90 | Swenton Michael J | Tulsa, OK 74105 | Oil & Gas Operator | Feb 2026 |
| 91 | Switchgrass E&P Operating, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Jan 2026 |
| 92 | SWN Production LLC | Spring, TX 77389-4954 | Oil & Gas Operator | Feb 2022 |
| 93 | Sydson D'Oro Exploration Co. | Houston, TX 77079 | Oil & Gas Operator | Jan 1992 |