| 101 | Postrock Midcontinent Production LLC | Oklahoma City, OK 73101 | Oil & Gas Operator | Jun 2025 |
| 102 | Prairie Oil Inco | | Oil Operator | Jan 1986 |
| 103 | Quest Cherokee LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | Jun 2025 |
| 104 | R. J. Oil Co. | Olney, TX 76374 | Oil & Gas Operator | May 2025 |
| 105 | Ramoil Company | Winfield, KS 67156 | Oil & Gas Operator | May 1987 |
| 106 | Range Oil Co., Inc. | Wichita, KS 67278 | Oil & Gas Operator | Jan 2020 |
| 107 | Range Oil Compan | | Oil & Gas Operator | Nov 1995 |
| 108 | Reata Petroleum LLC | Independence, KS 67301 | Oil & Gas Operator | Jun 2025 |
| 109 | Redbud Oil & Gas Operating, LLC | Spring, TX 77379 | Oil & Gas Operator | Jun 2025 |
| 110 | Remington Financ | | Oil Operator | Oct 1994 |
| 111 | Rhoads, Mark | Seminole, OK 74868 | Oil Operator | Sep 1999 |
| 112 | Sabine Productio | | Oil & Gas Operator | Mar 1994 |
| 113 | Shaw George R | | Oil & Gas Operator | Mar 1992 |
| 114 | Sheel Oil Compan | | Oil Operator | Jan 1985 |
| 115 | SKKM Oil Company | | Oil Operator | Dec 1992 |
| 116 | Stixon Petroleum | | Oil Operator | Dec 1996 |
| 117 | Stotts-Kirkpatri | | Oil Operator | Oct 1991 |
| 118 | Suerte Oil Compa | | Oil & Gas Operator | Oct 1995 |
| 119 | Suerte Oil Company | Howard, KS 67349 | Oil & Gas Operator | Jan 2017 |
| 120 | Supra Energy, Inc. | Tulsa, OK 74137 | Oil & Gas Operator | May 1997 |
| 121 | T & R Oil Company, A General Partnership | Moline, KS 67353 | Oil Operator | Dec 2019 |
| 122 | Tehi Illinois, LLC | Olney, IL 62450 | Oil & Gas Operator | Feb 2019 |
| 123 | Tet Energy | | Oil Operator | Jun 2025 |
| 124 | Texaco Explorati | | Oil & Gas Operator | Dec 1996 |
| 125 | Three D Oil Comp | | Oil & Gas Operator | Jan 1988 |
| 126 | Tomlinson Oil Co. Inc. | Great Bend, KS 67530 | Oil & Gas Operator | May 2025 |
| 127 | Triple C Petroleum LLC | Colony, KS 66015 | Oil Operator | Nov 2019 |
| 128 | Tubbs Patrick | Neodesha, KS 66757 | Oil Operator | Sep 2008 |
| 129 | Unknown | Houston, TX 77208 | Oil & Gas Operator | Dec 2023 |
| 130 | Usins Oil Compan | | Oil Operator | Jan 1993 |
| 131 | Vanroyen Oil And Gas, L.L.C. | Wichita, KS 67217 | Oil Operator | Jun 2025 |
| 132 | Veem Jade Oil & Gas LLC | Plano, TX 75093 | Oil Operator | Aug 2024 |
| 133 | Vestal, Jack L. | Longton, KS 67352 | Gas Operator | Mar 1998 |
| 134 | Westgate Oil Company, Inc. | Eureka, KS 67045 | Oil Operator | Aug 2025 |
| 135 | Whiteman Industries, Inc. | Oklahoma City, OK 73101 | Oil & Gas Operator | May 2025 |
| 136 | Wolfe, Leslie | Peru, KS 67360 | Oil Operator | Dec 2014 |
| 137 | Z & L Oil LLC | Longton, KS 67352 | Oil Operator | Jun 2025 |