| 1 | S & B Oil Oper - | | Oil Operator | Dec 1996 |
| 2 | S & B Operating, LLC | Iowa Park, TX 76367 | Oil Operator | Dec 2025 |
| 3 | S & C Construction, Inc. | Whitefish, MT 59937 | Oil & Gas Operator | Dec 2025 |
| 4 | S & H Oilfield Enterprises | | Oil & Gas Operator | Sep 2023 |
| 5 | S & J Oil | Hays, KS 67601 | Oil Operator | Feb 2002 |
| 6 | S & J Oil Company | Ellinwood, KS 67526 | Oil Operator | Jun 2000 |
| 7 | S & J Operating | | Oil Operator | May 1989 |
| 8 | S & K Oil Compan | | Oil Operator | Sep 1989 |
| 9 | S & K Oil Production, Inc. | Blue Mound, KS 66010 | Oil Operator | Jun 2025 |
| 10 | S & M Oil | Hays, KS 67601 | Oil Operator | Aug 2003 |
| 11 | S & M Oil - Craw | | Oil Operator | Dec 1995 |
| 12 | S & S Oil | Ponca City, OK 74601 | Oil & Gas Operator | Dec 2009 |
| 13 | S & S Oil & Gas LLC | Skiatook, OK 74070 | Oil & Gas Operator | Jul 2016 |
| 14 | S & S Oil Company | Electra, TX 76360 | Oil & Gas Operator | Dec 2025 |
| 15 | S & S Oil Leasing | Chase, KS 67524 | Oil Operator | Jun 2025 |
| 16 | S & S Oil, L.L.C. | Chase, KS 67524 | Oil Operator | Jun 2025 |
| 17 | S & T Oil Compan | | Oil Operator | Feb 1984 |
| 18 | S & V Oil Incorp | | Oil & Gas Operator | Apr 1990 |
| 19 | S & W Drilling C | | Oil Operator | May 1985 |
| 20 | S & W Oil & Gas, LLC | Pampa, TX 79066 | Oil & Gas Operator | Dec 2025 |
| 21 | S & W Oil Compan | | Oil Operator | Dec 1986 |
| 22 | S C B Oil Co. | Fredonia, KS 66736 | Gas Operator | Dec 2009 |
| 23 | S C Z Oil Compan | | Oil & Gas Operator | Feb 1995 |
| 24 | S-2 Oil Company | | Oil Operator | Mar 1994 |
| 25 | S. R. Weilert Oil LLC | Wichita, KS 67208 | Oil Operator | Nov 2005 |
| 26 | S.B. Oil Company, A General Partnership | Hays, KS 67601 | Oil Operator | Sep 2019 |
| 27 | S.J. Titan Co., A General Partnership | Hutchinson, KS 67502 | Oil & Gas Operator | May 2015 |
| 28 | Saaw Operating LLC | Protection, KS 67127 | Oil & Gas Operator | Jun 2025 |
| 29 | Sabine Corporation | Oklahoma City, OK 73116 | Oil & Gas Operator | Jul 1996 |
| 30 | Sabine Productio | | Oil & Gas Operator | Mar 1994 |
| 31 | Sabre Exploratio | | Oil Operator | Oct 1988 |
| 32 | Sabre Exploration, LLC | Wichita, KS 67205 | Oil Operator | Jun 2025 |
| 33 | Sabre Operating, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 2025 |
| 34 | Saco Oil Company | El Dorado, KS 67042 | Oil Operator | Jan 2001 |
| 35 | Sag Oil Company LLC | Wellsville, KS 66092 | Oil Operator | Jun 2025 |
| 36 | Sage Drilling Co Inc | Wichita, KS 67202 | Oil & Gas Operator | Nov 1998 |
| 37 | Sage NR Ok LLC | Tulsa, OK 74136 | Oil & Gas Operator | Sep 2025 |
| 38 | Sage, Larry George | Virgil, KS 66870 | Oil Operator | Dec 2019 |
| 39 | Sagebrush Operating LLC | Denver, CO 80203 | Oil & Gas Operator | May 2025 |
| 40 | Salt Creek Production, Inc. | Big Spring, TX 79721 | Oil & Gas Operator | Dec 2025 |
| 41 | Salt Creek Resources, LLC | Caney, KS 67333 | Oil Operator | Oct 2019 |
| 42 | Salt Fork Produc | | Oil Operator | Oct 1987 |
| 43 | Sam W Mays Jr LLC | Eureka, KS 67045 | Oil & Gas Operator | Apr 2018 |
| 44 | Samco Investments | | Oil Operator | Feb 2025 |
| 45 | Samedan Oil Corporation | Houston, TX 77067 | Oil & Gas Operator | Dec 2019 |
| 46 | Samson Properties, Incorporated | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2008 |
| 47 | Samson Resources | | Oil Operator | Jan 1994 |
| 48 | Samson Resources Company | Tulsa, OK 74103 | Oil & Gas Operator | Aug 2025 |
| 49 | Samuel Gary Jr. & Assoc., Inc. | | Oil & Gas Operator | Mar 2023 |
| 50 | Samuel Gary Jr. & Associates, Inc. | Denver, CO 80202 | Oil & Gas Operator | Jun 2025 |
| 51 | Samuel Jackson Production Co | | Oil Operator | Jun 2025 |
| 52 | San Marco Petroleum Inc | Denver, CO 80293 | Oil & Gas Operator | Oct 2025 |
| 53 | San Pet Inc | McPherson, KS 67460 | Oil Operator | May 1997 |
| 54 | San Saba Energy | Hays, KS 67601 | Oil Operator | May 1998 |
| 55 | Sananco Energy C | | Oil Operator | Aug 1987 |
| 56 | Sand Bar Oil Com | | Oil Operator | Jun 1986 |
| 57 | Sand Dollar Ener | | Oil Operator | Aug 1984 |
| 58 | Sand Point LLC | Oklahoma City, OK 73132 | Oil & Gas Operator | Dec 2020 |
| 59 | Sandefer Larry | | Oil Operator | Aug 1993 |
| 60 | Sanders, Arthur J. | Wichita, KS 67217 | Oil Operator | Nov 1989 |
| 61 | Sanders, Jack W | Wellsville, KS 66092 | Oil Operator | Feb 1996 |
| 62 | Sandhill L.L.C. | Wichita, KS 67202 | Gas Operator | Jun 2003 |
| 63 | Sandhills Oil Co. | Copan, OK 74022 | Oil Operator | Aug 1997 |
| 64 | Sandlin Oil Corp | Dacono, CO 80514 | Oil & Gas Operator | Oct 2025 |
| 65 | Sandridge Exploration And Production LLC | Oklahoma City, OK 73104 | Oil & Gas Operator | Dec 2025 |
| 66 | Sanguine Gas Exploration, LLC | Tulsa, OK 74119 | Oil & Gas Operator | Dec 2025 |
| 67 | Santa Fe Mineral | | Gas Operator | Oct 1994 |
| 68 | Santa Fe Minerals, Inc. | Dallas, TX 75240 | Oil & Gas Operator | Sep 2013 |
| 69 | Santa Fe Pipe & | | Oil & Gas Operator | Dec 1991 |
| 70 | Satchell Creek Petroleum, LLC | Wichita, KS 67205 | Oil Operator | Jul 2024 |
| 71 | Sauder Earl W | | Oil & Gas Operator | Jan 1992 |
| 72 | Sauder George E | | Oil Operator | Nov 1996 |
| 73 | Sauder Oil Co., LLC | Madison, KS 66860 | Oil Operator | Jun 2025 |
| 74 | Sauder, Earl W. (Deceased) | Emporia, KS 66801 | Oil & Gas Operator | Nov 1997 |
| 75 | Sauvage W W Inco | | Oil Operator | Nov 1989 |
| 76 | Savage James F | | Oil Operator | Dec 1996 |
| 77 | Sawdust Oil Comp | | Oil & Gas Operator | May 1987 |
| 78 | Saxon Oil Company | Dallas, TX 75204 | Oil & Gas Operator | Oct 2009 |
| 79 | Scavenger Oil Company Inc | Englewood, CO 80111 | Oil & Gas Operator | Mar 2000 |
| 80 | Schaben Oil LLC | Hays, KS 67601 | Oil Operator | Jun 2025 |
| 81 | Schankie & Sons, LLC | Madison, KS 66860 | Oil Operator | Jun 2025 |
| 82 | Schankie Well Se | | Oil Operator | Mar 1995 |
| 83 | Schankie Well Service, Inc. | Madison, KS 66860 | Oil Operator | Jun 2025 |
| 84 | Scheck Oil Operation | | Oil & Gas Operator | Jun 2025 |
| 85 | Scheuneman, Lester | Ridgeway, MO 64481 | Oil Operator | May 2019 |
| 86 | Schierling Eldon | | Oil & Gas Operator | Aug 1986 |
| 87 | Schierling, Eldon J. | Wichita, KS 67202 | Oil & Gas Operator | Jun 2025 |
| 88 | Schindler Oil | | Oil Operator | Dec 2009 |
| 89 | Schindler Oil, LLC | Madison, KS 66860 | Oil Operator | Jun 2025 |
| 90 | Schindler, Joe | Madison, KS 66860 | Oil Operator | Jun 2025 |
| 91 | Schippers Oilfield Services, LLC | Hoxie, KS 67740 | Oil Operator | Jun 2025 |
| 92 | Schlobohm Starr | | Oil Operator | Dec 1996 |
| 93 | Schlobohm, Starr F. | Wolfeboro, NH 03894 | Oil Operator | Jul 2004 |
| 94 | Schlotterbeck Ir | | Oil Operator | Nov 1990 |
| 95 | Schmeid Ranch, LLC | Hays, KS 67601 | Oil Operator | Jun 2024 |
| 96 | Schmidt Construction Services LLC | | Oil Operator | Jun 2025 |
| 97 | Schmidt Kermit O | | Oil & Gas Operator | Sep 1995 |
| 98 | Schmidt, Kermit | | Oil & Gas Operator | Dec 2009 |
| 99 | Schmidt, Norman D. | Galva, KS 67443 | Gas Operator | Oct 1997 |
| 100 | Schmidt, Terry D. | McPherson, KS 67460 | Oil Operator | Jun 2025 |