| 1 | Galt Investment Company LLC | Tulsa, OK 74120-7412 | Oil Operator | Jun 2024 |
| 2 | Gary Hurd Oil Company, Inc. | | Oil & Gas Operator | Jun 2025 |
| 3 | General Atlantic Resources Inc | Denver, CO 80202 | Oil & Gas Operator | Jan 2022 |
| 4 | Geological & Engineering Consultants | | Oil & Gas Operator | Jun 2025 |
| 5 | Gilliland Gerald D | Dewey, OK 74029-1639 | Oil Operator | Mar 2015 |
| 6 | Glenn Supply Company, Inc. | Tulsa, OK 74101 | Oil & Gas Operator | Jun 2025 |
| 7 | Glenn, Hoyt | | Oil Operator | Nov 2014 |
| 8 | Global Oklahoma Production, L.L.C. | | Oil & Gas Operator | May 2025 |
| 9 | Golden Resources Inc | Tulsa, OK 74103 | Oil & Gas Operator | Jul 2025 |
| 10 | Golden West Energy LTD | | Oil & Gas Operator | Apr 2020 |
| 11 | Gopher Oil Company | | Oil & Gas Operator | Mar 2025 |
| 12 | Gore Sidney | Tulsa, OK 74101 | Oil & Gas Operator | Dec 2016 |
| 13 | Grace Oil Company | Monahans, TX 79756 | Oil & Gas Operator | Oct 2011 |
| 14 | Graham, Marion T | | Oil Operator | Jun 2025 |
| 15 | Gram Oil Co | Bartlesville, OK 74003 | Oil Operator | Dec 2011 |
| 16 | Grand Production Company | Oklahoma City, OK 73116 | Oil & Gas Operator | Aug 2000 |
| 17 | Grand Resources Inc | Tulsa, OK 74137 | Oil & Gas Operator | Sep 2025 |
| 18 | Graves J M | Tulsa, OK 74105 | Oil & Gas Operator | Sep 2007 |
| 19 | Graves John G Oil Prop Inc | Tulsa, OK 74116-5666 | Oil & Gas Operator | Feb 2001 |
| 20 | Gray Fox Operating Company | Tulsa, OK 74119 | Oil Operator | May 1993 |
| 21 | Grayhorse Operating Inc | Tulsa, OK 74103-4439 | Oil & Gas Operator | Jun 2025 |
| 22 | Great Horned Owls, LLC | Katy, TX 77494 | Oil & Gas Operator | Jun 2025 |
| 23 | Great Northern Gas Company | Denver, CO 80293-0602 | Oil & Gas Operator | Jul 2017 |
| 24 | Great Plains Petroleum, Inc. | Snyder, TX 79549 | Oil & Gas Operator | May 2025 |
| 25 | Great Southwestern Expl Inc | Tulsa, OK 74105 | Oil & Gas Operator | Jun 2025 |
| 26 | Green Operating Company, Inc. | Tulsa, OK 74135 | Oil & Gas Operator | May 2025 |
| 27 | Greenwood Energy Inc | Oklahoma City, OK 73116-9083 | Oil & Gas Operator | Mar 2015 |
| 28 | Greenwood Oil Company | Skiatook, OK 74070 | Oil & Gas Operator | Aug 2013 |
| 29 | Greer Tom R | Ponca City, OK 74602-2444 | Oil & Gas Operator | May 2013 |
| 30 | Gross, Charles E. | Dallas, TX 75220 | Oil & Gas Operator | Feb 2012 |
| 31 | Ground Development Company Inc | Dallas, TX 75229-0377 | Oil & Gas Operator | Jan 2013 |