| 1 | W & T Offshore, L.L.C. | Houston, TX 77046 | Gas Operator | Jan 1999 |
| 2 | W.O.G., Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 3 | Wagner & Brown, LTD. | Midland, TX 79702 | Oil & Gas Operator | Aug 2014 |
| 4 | Walbet, Inc. | Monahans, TX 79756 | Oil & Gas Operator | Jun 2025 |
| 5 | Walker, Kent | Midland, TX 79704 | Oil & Gas Operator | Jun 2004 |
| 6 | Walsh & Watts Inc | Aledo, TX 76008 | Oil & Gas Operator | Jun 2025 |
| 7 | Walter Exploration Inc | Dallas, TX 75206 | Oil & Gas Operator | May 2009 |
| 8 | Walton, James A. | Midland, TX 79702 | Oil & Gas Operator | Oct 1994 |
| 9 | Warren, Joe H. | Dallas, TX 75206 | Oil & Gas Operator | Oct 2001 |
| 10 | Waterbridge Texas Operating LLC | Houston, TX 77056 | Oil & Gas Operator | Jun 2025 |
| 11 | Watson Packer Employee Fund | Monahans, TX 79756 | Oil & Gas Operator | Jun 2025 |
| 12 | Way, Ralph L., Inc. | Midland, TX 79701 | Oil & Gas Operator | Jun 2025 |
| 13 | WCWB Energy, LLC | Midland, TX 79701 | Oil Operator | Sep 2015 |
| 14 | Wellstar Corporation | Northglenn, CO 80233 | Oil & Gas Operator | Apr 2025 |
| 15 | West Oil Resources, LLC | Liberty Hill, TX 78642 | Oil & Gas Operator | Jun 2025 |
| 16 | West Texas Syndicate LLC. | Corpus Chrsti, TX 78414 | Oil Operator | Jun 2025 |
| 17 | Westar Energy, Inc. | Midland, TX 79705 | Oil & Gas Operator | Mar 2008 |
| 18 | Westco Oil Company | Ozona, TX 76943 | Oil & Gas Operator | Jun 2025 |
| 19 | Western Reserves Oil Co Inc | Midland, TX 79705 | Oil & Gas Operator | Oct 2020 |
| 20 | Westland Oil Development Corp. | Conroe, TX 77305 | Oil & Gas Operator | Mar 2008 |
| 21 | Westoil LLC | Austin, TX 78747 | Oil & Gas Operator | Jun 2025 |
| 22 | Westport Oil & Gas Company LP | The Woodlands, TX 77380 | Oil & Gas Operator | Feb 2007 |
| 23 | Westridge Oil & Gas Properties | Mineral Wells, TX 76068 | Oil & Gas Operator | Jun 2025 |
| 24 | Weststar Oil & Gas Inc | Edmond, OK 73013 | Oil & Gas Operator | Mar 2025 |
| 25 | Westwin Energy I, LP | Midland, TX 79701 | Oil & Gas Operator | Aug 2003 |
| 26 | White Rock Oil & Gas, LLC | Plano, TX 75024 | Oil & Gas Operator | Jun 2025 |
| 27 | White'S Industrial Engine'S | Houston, TX 77070 | Oil & Gas Operator | Jun 2025 |
| 28 | White, Ralph H. | Midland, TX 79701 | Oil & Gas Operator | Oct 2002 |
| 29 | Whiteman Industries, Inc. | Oklahoma City, OK 73101 | Oil & Gas Operator | Jun 2024 |
| 30 | Whitemound Oil Company | FT Stockton, TX 79735 | Oil & Gas Operator | Jan 2017 |
| 31 | Whiting Oil And Gas Corporation | Houston, TX 77002 | Oil & Gas Operator | Jun 2025 |
| 32 | Wilbanks, Bruce A. | Midland, TX 79701 | Oil & Gas Operator | Aug 1996 |
| 33 | Wilbanks, Bruce A. Company | Midland, TX 79702 | Oil & Gas Operator | Jun 2025 |
| 34 | Wild Cat Operating Company | Victoria, TX 77903 | Oil & Gas Operator | Mar 2008 |
| 35 | Williams Oil Company | Midland, TX 79710 | Oil & Gas Operator | Jun 2025 |
| 36 | Williams, Clayton Energy, Inc. | Houston, TX 77070 | Oil & Gas Operator | Jun 2025 |
| 37 | Wilshire Oil Co. Of Texas | Oklahoma City, OK 73102 | Oil & Gas Operator | Mar 2004 |
| 38 | Wilson Brothers Leasing Co., Inc | Midland, TX 79705 | Oil & Gas Operator | Mar 2015 |
| 39 | Wilson, W. Corp. | Midland, TX 79705 | Oil & Gas Operator | Mar 1999 |
| 40 | Wilson, WM. B. Exploration Inc. | Midland, TX 79701 | Oil & Gas Operator | Jan 1996 |
| 41 | Wilton Oil Company | Dallas, TX 75206 | Oil & Gas Operator | Apr 1999 |
| 42 | Winchester Energy, LLC | Houston, TX 77056 | Oil & Gas Operator | Jun 2025 |
| 43 | Wineridge Inc. | Austin, TX 78747 | Oil Operator | Jun 2025 |
| 44 | Wiseman, B. W., Jr. | Midland, TX 79702 | Oil & Gas Operator | Dec 2002 |
| 45 | Wiser Oil Co | Denver, CO 80202 | Oil & Gas Operator | Dec 2023 |
| 46 | WJC, Inc. | Post, TX 79356 | Oil & Gas Operator | Jun 2025 |
| 47 | Wolf Energy | Midland, TX 79701 | Oil & Gas Operator | Jan 1995 |
| 48 | Wolf Energy, Inc. | Midland, TX 79701 | Oil & Gas Operator | Oct 2021 |
| 49 | Wood, McShane & Thams | Midland, TX 79702 | Oil & Gas Operator | Oct 1995 |
| 50 | Woodbine Petroleum, Inc. | Dallas, TX 75204 | Oil & Gas Operator | Aug 2003 |
| 51 | WPX Energy Permian, LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | Jun 2025 |
| 52 | WTG Exploration | Midland, TX 79705 | Oil & Gas Operator | Jun 2025 |
| 53 | WTG Exploration Inc | Midland, TX 79705 | Oil & Gas Operator | Dec 2023 |
| 54 | Wyatt Permian, LLC | Corpus Chrsti, TX 78426 | Oil & Gas Operator | Jun 2025 |
| 55 | Wynn-Crosby Operating, LTD. | Dallas, TX 75201 | Oil & Gas Operator | Jun 2025 |