| 1 | General Atlantic Resources, Inc. | Denver, CO 80202 | Oil & Gas Operator | Jan 2022 |
| 2 | Genesis Energy Corporation | Oklahoma City, OK 73112 | Oil & Gas Operator | Mar 1995 |
| 3 | Geodyne Operating Company | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2015 |
| 4 | Glacier Petroleum Co Okla Inc | Edmond, OK 73013-1977 | Oil & Gas Operator | May 2026 |
| 5 | Gladiator Operating LLC | Ardmore, OK 73401 | Oil & Gas Operator | May 2026 |
| 6 | GLB Exploration Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | May 2026 |
| 7 | Glenn Supply Company, Inc. | Tulsa, OK 74101 | Oil & Gas Operator | Apr 2026 |
| 8 | Golden Gas Service Company | Tulsa, OK 74114 | Oil & Gas Operator | May 2026 |
| 9 | Grand Resources Inc | Tulsa, OK 74137 | Oil & Gas Operator | Jul 2026 |
| 10 | Great Horned Owls, LLC | Pampa, TX 79065 | Oil & Gas Operator | May 2026 |
| 11 | Great Plains Pipeline Company | Tulsa, OK 74135-6405 | Oil & Gas Operator | Jul 2014 |
| 12 | Great Western Drilling Co | Midland, TX 79701 | Oil & Gas Operator | Jul 2026 |
| 13 | Green River Operating Co Inc | Noble, OK 73068-5521 | Oil & Gas Operator | Feb 2018 |
| 14 | Green River Resources Inc. | Keystone, CO 80435 | Oil & Gas Operator | Jul 2026 |
| 15 | Greenlee Oil And Gas LLC | Norman, OK 73072 | Oil & Gas Operator | Mar 2026 |
| 16 | Gulf Exploration, LLC | Oklahoma City, OK 73114 | Oil & Gas Operator | Jun 2026 |
| 17 | Gulf Production Corp. | Oklahoma City, OK 73114 | Oil & Gas Operator | Apr 2015 |
| 18 | GW Investments, LLC | Mustang, OK 73064 | Oil Operator | May 2026 |