| 1 | B And G Production, Inc. | Woodward, OK 73801 | Oil & Gas Operator | Mar 2025 |
| 2 | B&E Exploration, Inc. | Perryton, TX 79070 | Oil & Gas Operator | Sep 2009 |
| 3 | Balcones Production Company | Houston, TX 77002 | Oil & Gas Operator | Feb 1996 |
| 4 | Bannon Energy Inc | Houston, TX 77068 | Oil & Gas Operator | Jun 1998 |
| 5 | Barbour Energy Corporation | Oklahoma City, OK 73113 | Oil & Gas Operator | Mar 2025 |
| 6 | Batton Oil & Gas, LLC | Spearman, TX 79081 | Oil & Gas Operator | Mar 2025 |
| 7 | Baxter, Kelly H. Oil And Gas Co. | Austin, TX 78767 | Oil & Gas Operator | Nov 2010 |
| 8 | Bce-Mach II LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Mar 2025 |
| 9 | Be Anadarko II, LLC | Austin, TX 78731 | Oil & Gas Operator | Mar 2025 |
| 10 | Benson-McCown & Company | Amarillo, TX 79114 | Oil & Gas Operator | Jul 2016 |
| 11 | Berexco Inc. | Wichita, KS 67208 | Oil & Gas Operator | Oct 2009 |
| 12 | Black'S Oil & Gas | Borger, TX 79008 | Oil & Gas Operator | Mar 2025 |
| 13 | Bluemark Energy LLC | Tulsa, OK 74120 | Oil & Gas Operator | Dec 2024 |
| 14 | Bo-MC Resources Corporation | Enid, OK 73702-1765 | Oil & Gas Operator | Apr 2005 |
| 15 | Bobwhite Production Company, Inc | Tulsa, OK 74112 | Oil & Gas Operator | Dec 2024 |
| 16 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Dec 2024 |
| 17 | Bracken Energy Company | Oklahoma City, OK 73118 | Oil & Gas Operator | Mar 2015 |
| 18 | Bracken Operating, L.L.C. | Perryton, TX 79070 | Oil & Gas Operator | Mar 2025 |
| 19 | Bradmar Petroleum Corporation | Oklahoma City, OK 73114 | Oil & Gas Operator | Mar 2015 |
| 20 | Brammer Supply Inc | Gainesville, TX 76240 | Oil & Gas Operator | Nov 2014 |
| 21 | Breck Operating Corp. | Breckenridge, TX 76424 | Oil & Gas Operator | Dec 2024 |
| 22 | Breitburn Operating LP | Houston, TX 77002 | Oil & Gas Operator | Mar 2025 |
| 23 | BRG Lone Star LTD. | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2025 |
| 24 | BRG Petroleum Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2020 |
| 25 | BRG Petroleum, Inc. | Tulsa, OK 74136 | Oil & Gas Operator | Nov 2020 |
| 26 | Brigham Oil & Gas, L.P. | Austin, TX 78730 | Oil & Gas Operator | Oct 2015 |
| 27 | Brighton Energy LLC | Tulsa, OK 74170 | Oil & Gas Operator | Mar 2015 |
| 28 | Brock Oil & Gas Corporation | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2019 |
| 29 | Brown & Borelli, Inc. | Kingfisher, OK 73750 | Oil & Gas Operator | Mar 2025 |
| 30 | Brown Tom Inc | Dallas, TX 75240 | Oil & Gas Operator | Mar 2015 |
| 31 | Buck Production Co LLC | Bristow, OK 74010 | Oil & Gas Operator | Sep 2023 |
| 32 | Burk Royalty Co., LTD. | Wichita Falls, TX 76308 | Oil & Gas Operator | Mar 2025 |
| 33 | Burk Royalty Company | Wichita Falls, TX 76308 | Oil & Gas Operator | Jan 2002 |
| 34 | Byng Energy Group Inc | Enid, OK 73703 | Oil & Gas Operator | Mar 2025 |