| 1 | Bargo Energy Company | Houston, TX 77010 | Oil & Gas Operator | May 2001 |
| 2 | Basa Resources, Inc. | Dallas, TX 75254 | Oil & Gas Operator | Jul 2025 |
| 3 | Beehive Operating, LLC | Graham, TX 76450 | Oil & Gas Operator | Jul 2025 |
| 4 | Bent Wing Energy, LLC | Austin, TX 78746 | Oil & Gas Operator | Jul 2025 |
| 5 | Bevo Production Co. | Amarillo, TX 79101 | Oil & Gas Operator | Dec 2014 |
| 6 | Black Diamond Operating Co., LLC | Kilgore, TX 75662 | Oil & Gas Operator | Sep 2009 |
| 7 | Block "T" Petroleum, Inc. | Tyler, TX 75707 | Oil & Gas Operator | Jul 2025 |
| 8 | Block T Operating, LLC | Dallas, TX 75201 | Oil & Gas Operator | Dec 2024 |
| 9 | Bluejay Energy Corporation | Waxahachie, TX 75168 | Oil Operator | Feb 2008 |
| 10 | Bowles Properties, Inc. | Longview, TX 75606 | Oil & Gas Operator | Dec 1998 |
| 11 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Apr 2025 |
| 12 | BPX Operating Company | Denver, CO 80202 | Oil & Gas Operator | Jul 2025 |
| 13 | Brannon Oil & Gas Inc | Fort Worth, TX 76102 | Oil & Gas Operator | Feb 2013 |
| 14 | Branta Production Company LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Jul 2025 |
| 15 | Brashear Production Service, Inc | Longview, TX 75602 | Oil & Gas Operator | Mar 2008 |
| 16 | Breitburn Operating LP | Houston, TX 77002 | Oil & Gas Operator | Jul 2025 |
| 17 | BRG Petroleum Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2020 |
| 18 | BRG Petroleum, Inc. | Tulsa, OK 74136 | Oil & Gas Operator | Nov 2020 |
| 19 | Brian Energy | Kilgore, TX 75663 | Oil & Gas Operator | May 2013 |
| 20 | Brooks Petroleum Company | Tyler, TX 75703 | Oil & Gas Operator | Jul 2025 |
| 21 | Brothers Production Company Inc. | Midland, TX 79708 | Oil & Gas Operator | Jul 2025 |
| 22 | Brower Oil & Gas Co., Inc. | Graham, TX 76450 | Oil & Gas Operator | Jul 2025 |
| 23 | Brown Tom Inc | Dallas, TX 75240 | Oil & Gas Operator | Mar 2015 |
| 24 | Bryant & Carr, Inc. | Tyler, TX 75702 | Oil & Gas Operator | Dec 1994 |
| 25 | Buffco Production, Inc. | Longview, TX 75606 | Oil & Gas Operator | Jul 2025 |
| 26 | Burk Royalty Co., LTD. | Wichita Falls, TX 76308 | Oil & Gas Operator | Jul 2025 |
| 27 | Buttram Energies Inc | Oklahoma City, OK 73112-7235 | Oil & Gas Operator | Nov 2021 |