| 1 | E & S Resources LLC | Crescent, OK 73028 | Oil & Gas Operator | Dec 2024 |
| 2 | Eagle Energy PTR I LP | Houston, TX 77064 | Oil & Gas Operator | Feb 2015 |
| 3 | Eagle Gas Marketing Co | Oklahoma City, OK 73114-2202 | Oil & Gas Operator | Nov 2022 |
| 4 | Eagle Rock Mid-Continent Operating LLC | Tulsa, OK 74103-3703 | Oil & Gas Operator | Dec 2024 |
| 5 | Earlsboro Energies Corporation | Oklahoma City, OK 73116-3605 | Oil & Gas Operator | Dec 2024 |
| 6 | Eastok Energy Partners LLC | Edmond, OK 73013-1044 | Oil & Gas Operator | Nov 2024 |
| 7 | Eberly & Meade | Oklahoma City, OK 73118 | Oil & Gas Operator | Jul 2002 |
| 8 | Edinger Engineering, Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | Jan 2025 |
| 9 | Eec Inc | Norman, OK 73069-6344 | Oil & Gas Operator | Jan 2025 |
| 10 | Eight Round Corporation | Seminole, OK 74818-1482 | Oil & Gas Operator | Jul 2012 |
| 11 | El Paso Production Company | Houston, TX 77002 | Oil & Gas Operator | Mar 2016 |
| 12 | Eland Energy Inc | Dallas, TX 75248 | Oil & Gas Operator | Jan 2025 |
| 13 | Elite Resources Inc | Cleveland, OK 74020 | Oil & Gas Operator | Jan 2025 |
| 14 | Elite Tank Trucks, Inc | | Oil & Gas Operator | Jan 2025 |
| 15 | Enable Gas Transmission LLC | Houston, TX 77002 | Oil & Gas Operator | Sep 2022 |
| 16 | Encore Operating LP | Plano, TX 75024 | Oil & Gas Operator | Jan 2025 |
| 17 | Enervest Operating LLC | Houston, TX 77002 | Oil & Gas Operator | Mar 2025 |
| 18 | Enerwest Trading Co LLC | Duncan, OK 73534 | Oil & Gas Operator | Dec 2024 |
| 19 | Enogex Services Corporation | Oklahoma City, OK 73124-0300 | Oil & Gas Operator | Apr 2009 |
| 20 | EOG (Oklahoma) Inc. | Oklahoma City, OK 73112 | Oil & Gas Operator | Oct 2016 |
| 21 | EOG Resources, Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2025 |
| 22 | Eott Energy Operating LP | Houston, TX 77210-4666 | Oil & Gas Operator | Oct 2009 |
| 23 | EP Energy E&P Company, LP | Houston, TX 77210 | Oil & Gas Operator | May 2022 |
| 24 | Escher Corporation | Oklahoma City, OK 73120 | Oil & Gas Operator | Dec 2024 |
| 25 | Esco Exploration, Inc | Dallas, TX 75201 | Oil & Gas Operator | Mar 2015 |
| 26 | Esis Inc | | Oil & Gas Operator | Feb 2017 |
| 27 | Eubank Michael Dba Trilby Oil Company | Amber, OK 73004-4903 | Oil Operator | May 2022 |
| 28 | Evolution Energy LLC | Oklahoma City, OK 73116 | Oil & Gas Operator | Jan 2025 |
| 29 | Excalibur Resources LLC | Houston, TX 77002-5220 | Oil & Gas Operator | Dec 2024 |
| 30 | Exco Resources Inc | Dallas, TX 75251 | Oil & Gas Operator | Dec 2024 |
| 31 | Exploration Associates II LLC | Oklahoma City, OK 73102-8815 | Oil & Gas Operator | Jan 2013 |
| 32 | Exxon Mobil Corporation | Spring, TX 77389 | Oil & Gas Operator | Mar 2025 |
| 33 | Exxonmobil Oil Corp | Houston, TX 77210 | Oil & Gas Operator | Dec 2024 |