| 101 | Horizon Natural Gas Company | Tulsa, OK 74170 | Oil & Gas Operator | Oct 2024 |
| 102 | Hulsey Larry O & Co | Graham, TX 76046 | Oil & Gas Operator | Jun 2012 |
| 103 | Hyperion Energy LP | Dallas, TX 75206 | Oil & Gas Operator | May 2014 |
| 104 | Indian Oil Company | Gainesville, TX 76241 | Oil & Gas Operator | May 2025 |
| 105 | Inman Oil LLC | Ruidoso, NM 88355 | Oil Operator | Mar 2025 |
| 106 | Jaycar Production LLC | Comanche, OK 73529-4670 | Oil Operator | Feb 2025 |
| 107 | Jet Oil Co12/Ofb See 18649 | | Oil & Gas Operator | Jul 2007 |
| 108 | Johnson June | Lawton, OK 73501-9624 | Oil & Gas Operator | Sep 2024 |
| 109 | JWD Oil & Gas LLC | Oklahoma City, OK 73116-9039 | Oil Operator | Mar 2025 |
| 110 | K Phil Fleetwood Oil Properties LLC | Marlow, OK 73055 | Oil & Gas Operator | Mar 2025 |
| 111 | K S Oil Company Inc | Norman, OK 73072-7480 | Oil & Gas Operator | Feb 2025 |
| 112 | Kaiser-Francis Oil Company | Tulsa, OK 74121 | Oil & Gas Operator | May 2025 |
| 113 | Kalda Company | Wichita Falls, TX 76307 | Oil & Gas Operator | Dec 1994 |
| 114 | Kate F H | Oklahoma City, OK 73122 | Oil & Gas Operator | Jun 2000 |
| 115 | Kelloil Inc | Fort Worth, TX 76116-5600 | Oil & Gas Operator | Mar 2015 |
| 116 | Kelmar Oil Company | Chickasha, OK 73018 | Oil & Gas Operator | Mar 2025 |
| 117 | Kepco Operating, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Feb 2025 |
| 118 | Kepco. Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | Mar 2015 |
| 119 | Kerr McGee Rocky MTN Corp | Denver, CO 80202-5736 | Oil & Gas Operator | Mar 2015 |
| 120 | Kerr-McGee Corporation | Dallas, TX 75380 | Oil & Gas Operator | Mar 2025 |
| 121 | Kerr-McGee Refining Corp | Oklahoma City, OK 73125 | Oil & Gas Operator | Jun 2007 |
| 122 | Key Operating Co., Inc. | Duncan, OK 73534-1284 | Oil & Gas Operator | Jan 2025 |
| 123 | Kiester Operating Company | Oklahoma City, OK 73106 | Oil & Gas Operator | Jan 2025 |
| 124 | Kirby Exploration Co | Houston, TX 77251 | Oil & Gas Operator | Jan 2014 |
| 125 | Klabzuba Brothers LLC | Prague, OK 74864-0567 | Oil & Gas Operator | Jul 2007 |
| 126 | Koch Oil Company | | Oil & Gas Operator | May 2017 |
| 127 | L E Jones Operating Inc | Duncan, OK 73534 | Oil & Gas Operator | Mar 2025 |
| 128 | Lakota Oil & Gas | Comanche, OK 73529-9602 | Oil & Gas Operator | May 2014 |
| 129 | Laredo Petroleum Inc | Tulsa, OK 74120 | Oil & Gas Operator | Mar 2023 |
| 130 | Latigo Drilling Corporation | Duncan, OK 73533 | Oil & Gas Operator | Mar 2025 |
| 131 | Laurco Energies,Inc | | Oil & Gas Operator | Oct 2024 |
| 132 | Le Norman Energy Corporation | Duncan, OK 73534 | Oil & Gas Operator | Nov 2014 |
| 133 | Le Norman Partners LLC | Duncan, OK 73533-9523 | Oil & Gas Operator | Feb 2012 |
| 134 | Lema Petroleum Inc | Seminole, OK 74868 | Oil & Gas Operator | Feb 2025 |
| 135 | Lewis J K | Duncan, OK 73534-1742 | Oil & Gas Operator | Apr 2015 |
| 136 | Lewis Oil Operations LLC | Ratliff City, OK 73481 | Oil & Gas Operator | Feb 2025 |
| 137 | Linam Harry Dba Sooner State Production | Marlow, OK 73055-0583 | Oil & Gas Operator | Apr 2015 |
| 138 | Linam Richard Dwayne | Marlow, OK 73055-8658 | Oil Operator | Nov 2024 |
| 139 | Locators Oil And Gas Inc | Guthrie, OK 73044 | Oil & Gas Operator | Oct 2022 |
| 140 | London William W | Oklahoma City, OK 73116 | Oil & Gas Operator | Nov 2015 |
| 141 | Longacre Oil & Gas | Enid, OK 73702 | Oil & Gas Operator | Mar 2013 |
| 142 | Lucky Oil Company | Comanche, OK 73529-0009 | Oil Operator | Dec 2024 |
| 143 | Marathon Oil Company | Houston, TX 77252 | Oil & Gas Operator | Mar 2025 |
| 144 | Mark Holloway Inc | Oklahoma City, OK 73107-6526 | Oil & Gas Operator | Mar 2025 |
| 145 | Markley Exploration | Bixby, OK 74008-5332 | Oil & Gas Operator | Jan 2014 |
| 146 | Markley L C Corporation | Fletcher, OK 73541 | Oil & Gas Operator | Aug 2002 |
| 147 | Marshall Oil Corporation | Oklahoma City, OK 73154 | Oil & Gas Operator | Apr 2017 |
| 148 | Maxland Oil Company | Haslet, TX 76052-5137 | Oil Operator | Nov 2014 |
| 149 | McFerran Operating LLC | Seminole, OK 74868-6202 | Oil & Gas Operator | Mar 2025 |
| 150 | Meade Energy Corporation | Oklahoma City, OK 73118-4015 | Oil & Gas Operator | Mar 2025 |
| 151 | Medallion Energy Inc | Norman, OK 73072-7436 | Oil & Gas Operator | Aug 2004 |
| 152 | Mel Cox Transports Inc | Comanche, OK 73529-7640 | Oil & Gas Operator | Jul 2022 |
| 153 | Meridian Exploration Inc | Oklahoma City, OK 73128 | Oil & Gas Operator | Aug 2013 |
| 154 | Merit Energy Company | Dallas, TX 75240 | Oil & Gas Operator | May 2025 |
| 155 | Miller Joe B | Lawton, OK 73507 | Oil Operator | Nov 2024 |
| 156 | Mollenkopf Mark | Anadarko, OK 73005 | Oil Operator | Feb 2025 |
| 157 | Moore Richard L | Morris, OK 74445 | Oil Operator | Aug 2013 |
| 158 | Mustang Fuel Corporation | Oklahoma City, OK 73114 | Oil & Gas Operator | Mar 2025 |
| 159 | Nbi Services, Inc. | Tulsa, OK 74159 | Oil & Gas Operator | May 2025 |
| 160 | Noble Energy Production Inc | Houston, TX 77067 | Oil & Gas Operator | May 2025 |
| 161 | Northbrook Oil & Gas Co LLC | Norman, OK 73072 | Oil & Gas Operator | Nov 2014 |
| 162 | Nub'S Well Servicing Inc | Ratliff City, OK 73481 | Oil & Gas Operator | Mar 2025 |
| 163 | Oak Hills Drilling & Oper., LLC | Holdenville, OK 74848 | Oil & Gas Operator | May 2013 |
| 164 | Oak Hills Energy Inc | Holdenville, OK 74848-0470 | Oil & Gas Operator | Sep 2014 |
| 165 | Oklahoma Prod & Exp Co | Broken Arrow, OK 74012 | Oil & Gas Operator | May 2013 |
| 166 | Oneok Resources Company | Tulsa, OK 74102 | Oil & Gas Operator | Feb 2017 |
| 167 | Otc Petroleum Corporation | Nichols Hill, OK 73116 | Oil & Gas Operator | Mar 2015 |
| 168 | Ouachita Exploration Inc | Chickasha, OK 73018 | Oil & Gas Operator | Feb 2025 |
| 169 | Oxley Petroleum | Tulsa, OK 74119-3609 | Oil & Gas Operator | Jan 2020 |
| 170 | Park Avenue Exploration Corp | Oklahoma City, OK 73102-5604 | Oil & Gas Operator | Sep 2011 |
| 171 | Parker Shirley M | Tulsa, OK 74136 | Oil Operator | Jun 2013 |
| 172 | Patina Oil & Gas Corporation | Denver, CO 80202 | Oil & Gas Operator | May 2016 |
| 173 | Patina Oklahoma Corp | Duncan, OK 73533-9523 | Oil & Gas Operator | Nov 2014 |
| 174 | Pearl Petroleum Inc | Lawton, OK 73501-5821 | Oil & Gas Operator | Jan 2014 |
| 175 | Petro Speed Inc | Norman, OK 73069-8116 | Oil & Gas Operator | Mar 2015 |
| 176 | Petrocorp Incorporated | Tulsa, OK 74170 | Oil & Gas Operator | Nov 2021 |
| 177 | Petroda Oil & Gas LLC | Edmond, OK 73054 | Oil & Gas Operator | Feb 2023 |
| 178 | Petrohawk Operating Company | Houston, TX 77056 | Oil & Gas Operator | Oct 2021 |
| 179 | PHD Oil & Gas Inc | Rush Springs, OK 73082-0218 | Oil & Gas Operator | May 2021 |
| 180 | Price Brothers Oil Co | Duncan, OK 73533 | Oil Operator | Feb 1996 |
| 181 | Price J R Inc | Addington, OK 73520-0099 | Oil & Gas Operator | Apr 2015 |
| 182 | Price, W. H. | Granbury, TX 76048 | Oil & Gas Operator | Jun 2024 |
| 183 | Prime Energy Corp | Charleston, WV 25301-1707-1707 | Oil & Gas Operator | Sep 2015 |
| 184 | Prime Operating Company | Houston, TX 77024 | Oil & Gas Operator | May 2025 |
| 185 | Priority Holdings LLC | Marlow, OK 73055 | Oil Operator | Feb 2025 |
| 186 | Prospective Investment & Trading | Scottsdale, AZ 85261-4190 | Oil & Gas Operator | Jun 2016 |
| 187 | Pryor, Curtis | Lubbock, TX 79424 | Oil & Gas Operator | Dec 1998 |
| 188 | Qep Energy Company | Midland, TX 79701 | Oil & Gas Operator | Feb 2025 |
| 189 | Questar Explor & Prod Co | Tulsa, OK 74136 | Oil & Gas Operator | Jan 2017 |
| 190 | R & S Exploration & Production | Lawton, OK 73501 | Oil Operator | Jan 1996 |
| 191 | R L Turner Oil Company LLC | Duncan, OK 73533 | Oil Operator | Feb 2025 |
| 192 | Ram Asset Management Co | Oklahoma City, OK 73114 | Oil & Gas Operator | Mar 2015 |
| 193 | Red Wolf Operating LLC | Edmond, OK 73003-2179 | Oil & Gas Operator | Mar 2025 |
| 194 | Redland Resources, LLC | Oklahoma City, OK 73127 | Oil & Gas Operator | Mar 2025 |
| 195 | Richland Resources Corporation | Oklahoma City, OK 73114 | Oil & Gas Operator | May 2025 |
| 196 | Riviera Operating, LLC | Houston, TX 77002 | Oil & Gas Operator | Mar 2025 |
| 197 | Rocky Roads Operating LLC | Tulsa, OK 74103-4048 | Oil & Gas Operator | Mar 2025 |
| 198 | Samson Resources Company | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2025 |
| 199 | Sanguine Gas Exploration, LLC | Tulsa, OK 74119 | Oil & Gas Operator | May 2025 |
| 200 | Scarth Oil & Gas Co | Amarillo, TX 79101 | Oil & Gas Operator | Feb 1999 |