| 201 | Samson Lone Star LP | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2007 |
| 202 | Samson Lone Star, LLC | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2026 |
| 203 | Sandridge Exploration And Production LLC | Oklahoma City, OK 73104 | Oil & Gas Operator | Feb 2026 |
| 204 | SDG Operating Company, Inc | Tyler, TX 75701 | Oil & Gas Operator | Feb 2026 |
| 205 | Seagull Energy E & P Inc | Houston, TX 77002 | Oil & Gas Operator | Jan 2015 |
| 206 | SND Operating, L.L.C. | Kilgore, TX 75663 | Oil & Gas Operator | Feb 2026 |
| 207 | Southcoast Production Inc | Houston, TX 77010 | Oil & Gas Operator | Feb 2026 |
| 208 | Southern Bay Operating, L.L.C. | Houston, TX 77002 | Oil & Gas Operator | Jun 2013 |
| 209 | Southern Oil Of Louisiana LLC | Madisonville, LA 70447 | Oil & Gas Operator | Feb 2026 |
| 210 | Square Mile Energy, L.L.C. | Houston, TX 77057 | Oil & Gas Operator | Feb 2026 |
| 211 | Star Of Texas Energy SRVS, Inc. | Austin, TX 78702 | Oil & Gas Operator | Feb 2026 |
| 212 | STS Petroleum LLC | Houston, TX 77289 | Oil & Gas Operator | Feb 2026 |
| 213 | Sue-Ann Production Company | Victoria, TX 77903 | Oil & Gas Operator | Mar 2008 |
| 214 | Synergy Oil & Gas, Inc. (A) | Houston, TX 77024 | Oil & Gas Operator | Aug 2001 |
| 215 | T-N-T Engineering, Inc. | Fort Worth, TX 76107 | Oil & Gas Operator | Feb 2026 |
| 216 | Tabco Exploration Inc. | New Orleans, LA 70131 | Oil & Gas Operator | Dec 1998 |
| 217 | Tag Operating Company, Inc. | Houston, TX 77092 | Oil & Gas Operator | Feb 2026 |
| 218 | Taylor-McIlhenny Oper. Co., Inc. | Lewisville, TX 75029 | Oil & Gas Operator | Jan 1996 |
| 219 | Texaco E & P Inc. | Houston, TX 77099 | Oil & Gas Operator | Feb 2026 |
| 220 | Texakota, Inc. | Houston, TX 77098 | Oil & Gas Operator | Mar 2021 |
| 221 | Texas Crude, Inc. | Houston, TX 77256 | Oil & Gas Operator | Oct 1995 |
| 222 | Torch Operating Company | Houston, TX 77010 | Oil & Gas Operator | Mar 2015 |
| 223 | Torrent Oil LLC | Houston, TX 77002 | Oil & Gas Operator | Feb 2026 |
| 224 | Tri-C Resources, Inc. | Houston, TX 77024 | Oil & Gas Operator | Aug 2009 |
| 225 | Tri-C Resources, LLC | Houston, TX 77024 | Oil & Gas Operator | Feb 2026 |
| 226 | Triad Energy Corporation | Houston, TX 77057 | Oil & Gas Operator | Oct 2011 |
| 227 | Triple J Investments Inc | Longview, TX 75606 | Oil & Gas Operator | Feb 2023 |
| 228 | Tucker Operating Co., Inc. | Victoria, TX 77903 | Oil & Gas Operator | Feb 2026 |
| 229 | Union Oil Co Of California | Midland, TX 79706 | Oil & Gas Operator | Jan 2022 |
| 230 | United Oil & Minerals, Inc. | Austin, TX 78746 | Oil & Gas Operator | Jan 2001 |
| 231 | Unknown | Houston, TX 77208 | Oil & Gas Operator | Dec 2023 |
| 232 | Upstream Exploration LLC | Metairie, LA 70002 | Oil & Gas Operator | Jan 2020 |
| 233 | Valley Gathering Company | Midland, TX 79702 | Oil & Gas Operator | Feb 1997 |
| 234 | Vantage Operating, LLC | San Antonio, TX 78230 | Oil & Gas Operator | Feb 2026 |
| 235 | Vintage Petroleum, Inc. | Houston, TX 77046 | Oil & Gas Operator | Oct 2025 |
| 236 | Wagner Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | Feb 2026 |
| 237 | Wainoco Oil & Gas Company | Houston, TX 77024 | Oil & Gas Operator | Dec 2005 |
| 238 | Walter Oil & Gas Corporation | Houston, TX 77002 | Oil & Gas Operator | Feb 2026 |
| 239 | Weatherly Oil & Gas, LLC | Dallas, TX 75206 | Oil & Gas Operator | Feb 2026 |
| 240 | White Oak Operating Company LLC | Houston, TX 77077 | Oil & Gas Operator | Feb 2026 |
| 241 | XTO Energy Inc. | Spring, TX 77389 | Oil & Gas Operator | Feb 2026 |
| 242 | Zachry Exploration, LTD. | San Antonio, TX 78205 | Oil & Gas Operator | Jan 2009 |
| 243 | Zenergy Inc | Tulsa, OK 74136 | Oil & Gas Operator | Dec 2025 |