| 1 | Alpine Inc | Oklahoma City, OK 73134-2504 | Oil & Gas Operator | Feb 2024 |
| 2 | Bravo Arkoma LLC | Tulsa, OK 74103-3100 | Oil & Gas Operator | Feb 2025 |
| 3 | Cane Creek Energy Partners Inc | Morris, OK 74445 | Oil & Gas Operator | Feb 2025 |
| 4 | Chesapeake Operating LLC | Oklahoma City, OK 73154 | Oil & Gas Operator | May 2025 |
| 5 | Dette Oil Corporation | Oklahoma City, OK 73162-6249 | Oil & Gas Operator | Oct 2015 |
| 6 | Devon Energy Corp (Nevada) | Oklahoma City, OK 73102 | Oil & Gas Operator | Feb 2017 |
| 7 | First Natural Gas Inc | Checotah, OK 74426 | Oil & Gas Operator | Feb 2025 |
| 8 | GHK Company LLC (The) | Oklahoma City, OK 73118-1120 | Oil & Gas Operator | Apr 2018 |
| 9 | Grizzly Operating LLC | Houston, TX 77057 | Oil & Gas Operator | Mar 2025 |
| 10 | Hill Production Company | Kilgore, TX 75663 | Oil & Gas Operator | Feb 2009 |
| 11 | Lre Operating, LLC | Houston, TX 77002 | Oil & Gas Operator | Nov 2016 |
| 12 | Lyons & Lyons Inc | Tulsa, OK 74119 | Oil & Gas Operator | Feb 2025 |
| 13 | Monarch Energy Company LLC | Eufaula, OK 74432 | Oil & Gas Operator | Mar 2025 |
| 14 | Mustang Fuel Corporation | Oklahoma City, OK 73114 | Oil & Gas Operator | Mar 2025 |
| 15 | Oneok Resources Company | Tulsa, OK 74102 | Oil & Gas Operator | Feb 2017 |
| 16 | Regal Petroleum Services, Inc. | Euless, TX 76039-1127 | Oil & Gas Operator | May 2015 |
| 17 | Rki Exploration & Production LLC | Tulsa, OK 74172 | Oil & Gas Operator | May 2025 |
| 18 | Samson Resources Company | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2025 |
| 19 | Sanguine Gas Exploration, LLC | Tulsa, OK 74119 | Oil & Gas Operator | May 2025 |
| 20 | SJM Inc | Tulsa, OK 74133-1757 | Gas Operator | Apr 2006 |
| 21 | Tau Ventures | Tulsa, OK 74105-1026 | Oil & Gas Operator | Feb 2025 |