| 1 | G A W Oil Company LLC | Enid, OK 73702-3926 | Oil & Gas Operator | Mar 2025 |
| 2 | G E Operating, Inc. | Graham, TX 76450 | Oil & Gas Operator | May 2020 |
| 3 | Gai-Jin Trading Company LLC | Oklahoma City, OK 73107 | Oil & Gas Operator | Sep 2024 |
| 4 | Ganer Oil Company | Blackwell, OK 74631-4221 | Oil & Gas Operator | Jan 2022 |
| 5 | Garms Oil Inc | Kingfisher, OK 73750-4207 | Oil & Gas Operator | Jan 2025 |
| 6 | Gary M Lake & Company | Edmond, OK 73012-8208 | Oil & Gas Operator | Aug 2021 |
| 7 | Gastar Exploration LLC | Tulsa, OK 74136-1921 | Oil & Gas Operator | Feb 2025 |
| 8 | General Atlantic Resources Inc | Denver, CO 80202 | Oil & Gas Operator | Jan 2022 |
| 9 | General Producing Company | Houston, TX 77002 | Oil & Gas Operator | Jun 1993 |
| 10 | Genie Oil & Gas Corporation | Broken Arrow, OK 74013-3783 | Oil & Gas Operator | Feb 2025 |
| 11 | Geodyne Operating Company | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2015 |
| 12 | Geodyne Resources Inc. | Tulsa, OK 74103 | Oil & Gas Operator | Jul 2010 |
| 13 | George H Russell Oil & Gas Investments Inc | Mustang, OK 73064 | Oil & Gas Operator | Oct 2023 |
| 14 | Get Pumping LLC | Drummond, OK 73735 | Oil & Gas Operator | Jan 2025 |
| 15 | Getty Oil Company | Hays, KS 67601 | Oil & Gas Operator | Mar 2015 |
| 16 | Getty Reserve Oil, Inc. | White Plains, NY 10650 | Oil & Gas Operator | Mar 2005 |
| 17 | GHK Company LLC (The) | Oklahoma City, OK 73118-1120 | Oil & Gas Operator | Apr 2018 |
| 18 | Gilliland Oil And Gas Inc | Hennessey, OK 73742 | Oil & Gas Operator | Mar 2025 |
| 19 | Glacier Petroleum Co Okla Inc | Edmond, OK 73013-1977 | Oil & Gas Operator | Mar 2025 |
| 20 | Glenn Supply Company, Inc. | Tulsa, OK 74101 | Oil & Gas Operator | Feb 2025 |
| 21 | GLM Energy Inc | Oklahoma City, OK 73142 | Oil & Gas Operator | Feb 2025 |
| 22 | Godfrey Oil Properties | Madill, OK 73446 | Oil & Gas Operator | Mar 2025 |
| 23 | Goff D C Revocable Energy Trust | Fayetteville, AR 72702-1465 | Oil & Gas Operator | Jun 2005 |
| 24 | Golden Gas Energies Inc | | Oil & Gas Operator | Jan 1999 |
| 25 | Golden Gas Production Company | Tulsa, OK 74136 | Oil & Gas Operator | Jan 2025 |
| 26 | Gomaco Inc | Tulsa, OK 74103-5061 | Oil & Gas Operator | Apr 2015 |
| 27 | Gothic Energy Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Jul 2015 |
| 28 | Gothic Production Corporation | Oklahoma City, OK 73154 | Oil & Gas Operator | Dec 2016 |
| 29 | Graham-Michaelis Corporation | Wichita, KS 67201 | Oil & Gas Operator | Dec 2010 |
| 30 | Grand Lake Resources | Hennessey, OK 73742 | Oil & Gas Operator | Jan 2025 |
| 31 | Grand Resources Inc | Tulsa, OK 74137 | Oil & Gas Operator | Jun 2025 |
| 32 | Great Horned Owls, LLC | Katy, TX 77494 | Oil & Gas Operator | Feb 2025 |
| 33 | Great Plains Pipeline Company | Tulsa, OK 74135-6405 | Oil & Gas Operator | Jul 2014 |
| 34 | Great Yellowstone Corp. | | Oil & Gas Operator | Apr 1993 |
| 35 | Green Operating Company, Inc. | Tulsa, OK 74135 | Oil & Gas Operator | Feb 2025 |
| 36 | Greenlee Oil And Gas LLC | Norman, OK 73072 | Oil & Gas Operator | Feb 2025 |
| 37 | Greenwood Energy Inc | Oklahoma City, OK 73116-9083 | Oil & Gas Operator | Mar 2015 |
| 38 | Griffin Resources LLC | Breckenridge, TX 76424 | Oil & Gas Operator | Jun 2025 |
| 39 | Grizzly Operating LLC | Houston, TX 77057 | Oil & Gas Operator | Mar 2025 |
| 40 | Gruenerwald WM & Assoc Inc | Colorado Spring, CO 80960-0669 | Oil & Gas Operator | Jan 2002 |
| 41 | Grynberg Petroleum Company | Greenwood Vge, CO 80111-3326 | Oil & Gas Operator | Oct 2019 |
| 42 | Gulf Exploration, LLC | Oklahoma City, OK 73114 | Oil & Gas Operator | May 2025 |
| 43 | Gulf Production Corporation | Oklahoma City, OK 73114 | Oil & Gas Operator | Apr 2015 |
| 44 | Gulfstream Petroleum Corp. | | Oil & Gas Operator | Feb 2002 |
| 45 | Gungoll Carl E Estate | Oklahoma City, OK 73154-0466 | Oil & Gas Operator | Aug 2000 |
| 46 | Gungoll Henry H. Associates | Enid, OK 73701 | Oil & Gas Operator | Jan 2024 |
| 47 | GW Petroleum Inc | Houston, TX 77002 | Oil & Gas Operator | Apr 1993 |