| 1 | B & R Operating, LLC | San Angelo, TX 76903 | Oil & Gas Operator | Jan 2007 |
| 2 | Banner Operating, LLC | Austin, TX 78735 | Oil & Gas Operator | Feb 2026 |
| 3 | Basa Resources, Inc. | Dallas, TX 75254 | Oil & Gas Operator | Feb 2026 |
| 4 | Baxter, Murphy H. | Houston, TX 77002 | Oil & Gas Operator | Sep 1998 |
| 5 | Baytech Inc | Midland, TX 79702 | Oil & Gas Operator | Aug 2003 |
| 6 | Bellwether Exploration Company | Houston, TX 77010 | Oil & Gas Operator | May 2001 |
| 7 | Berry, O. H. | Midland, TX 79702 | Oil & Gas Operator | Dec 1993 |
| 8 | Bettis, Boyle & Stovall | Graham, TX 76450 | Oil & Gas Operator | Feb 2026 |
| 9 | Bex, Inc. | Nashville, TN 37209 | Oil & Gas Operator | Aug 2007 |
| 10 | BHP Petroleum (Americas) Inc | Houston, TX 77056 | Oil & Gas Operator | Mar 2015 |
| 11 | Black Mountain SWD LP | Fort Worth, TX 76102 | Oil & Gas Operator | Feb 2026 |
| 12 | Blue Star Natural Resources, LLC | San Angelo, TX 76906 | Oil & Gas Operator | Feb 2026 |
| 13 | Boaz Energy II Operating, LLC | Midland, TX 79705 | Oil & Gas Operator | Feb 2026 |
| 14 | Bob Hughes Oil Company, LLC | San Angelo, TX 76901 | Oil & Gas Operator | Feb 2026 |
| 15 | Bold Operating, LLC | The Woodlands, TX 77381 | Oil & Gas Operator | May 2019 |
| 16 | Bolding Energy, LLC | Sterling City, TX 76951 | Oil & Gas Operator | Feb 2026 |
| 17 | Bomar Operating Co., LC | Bellaire, TX 77401 | Oil & Gas Operator | Feb 2026 |
| 18 | Boyd & McWilliams Energy Group | Midland, TX 79701 | Oil & Gas Operator | Feb 2026 |
| 19 | Braman, D. H., Jr. | Victoria, TX 77901 | Oil & Gas Operator | Dec 2008 |
| 20 | Breck Operating Corp. | Breckenridge, TX 76424 | Oil & Gas Operator | Nov 2025 |
| 21 | Breeze Resources, Inc. | Tulsa, OK 74136 | Oil & Gas Operator | Sep 1993 |
| 22 | Breitburn Operating LP | Keithville, LA 71047 | Oil & Gas Operator | Feb 2026 |
| 23 | Broad Oak Energy II, LLC | Irving, TX 75063 | Oil & Gas Operator | Mar 2018 |
| 24 | Brothers Production Company Inc. | Midland, TX 79708 | Oil & Gas Operator | Feb 2026 |
| 25 | Brown Tom Inc | Dallas, TX 75240 | Oil & Gas Operator | Mar 2015 |
| 26 | BRP Energy, LLC | San Angelo, TX 76902 | Oil & Gas Operator | Feb 2026 |
| 27 | Burgundy Oil & Gas, Inc. | Midland, TX 79701 | Oil & Gas Operator | Feb 2026 |
| 28 | Burlington Resources O&G | Midland, TX 79710-1810 | Oil & Gas Operator | Mar 1997 |
| 29 | Burlington Resources Oil & Gas Company LP | Houston, TX 77252 | Oil & Gas Operator | Feb 2026 |
| 30 | Burlington Resources Oil And Gas Co. | Houston, TX 77210 | Oil & Gas Operator | Mar 2023 |
| 31 | Bustamante Oil Company | Midland, TX 79710 | Oil & Gas Operator | Feb 2026 |
| 32 | Bynum Oil Company, Inc. | Midland, TX 79702 | Oil & Gas Operator | Jul 2003 |
| 33 | Byrd Operating Company | Midland, TX 79702 | Oil & Gas Operator | Feb 2026 |