| 1 | G E Operating, Inc. | Graham, TX 76450 | Oil & Gas Operator | May 2020 |
| 2 | Gaither Petroleum Corporation | Katy, TX 77493 | Oil & Gas Operator | Jun 2025 |
| 3 | Galloway Energy Co. | Tomball, TX 77377 | Oil & Gas Operator | Jun 2025 |
| 4 | Galloway Lone Star, L.L.C. | Tomball, TX 77377 | Oil & Gas Operator | Jun 2025 |
| 5 | Garrison LTD. | San Antonio, TX 78257 | Oil & Gas Operator | Jun 2025 |
| 6 | Gei Management Co., Inc. | Houston, TX 77024 | Oil & Gas Operator | Sep 1993 |
| 7 | Gemini Exploration Company | Dallas, TX 75219 | Oil & Gas Operator | Mar 1997 |
| 8 | Genie Corporation | Abilene, TX 79604 | Oil & Gas Operator | Mar 2008 |
| 9 | Geosouthern Energy Corporation | The Woodlands, TX 77380 | Oil & Gas Operator | Jun 2025 |
| 10 | Ginco Operating Co. | San Antonio, TX 78217 | Oil & Gas Operator | Jun 2025 |
| 11 | Ginger Petroleum Company, Inc. | La Grange, TX 78945 | Oil & Gas Operator | Jun 2025 |
| 12 | Glenco Oil & Gas Company | Seguin, TX 78155 | Oil & Gas Operator | Dec 1994 |
| 13 | Goldrus Producing Company | Houston, TX 77064 | Oil & Gas Operator | Aug 2009 |
| 14 | Graham Royalty LTD | Covington, LA 70434 | Oil & Gas Operator | Jul 2007 |
| 15 | Great West Energy & Expl., Inc. | Addison, TX 75001 | Oil & Gas Operator | Mar 2008 |
| 16 | Gsi Oil & Gas, Inc. | Bryan, TX 77806 | Oil & Gas Operator | Jun 2025 |
| 17 | Guest Petroleum Incorporated | Edmond, OK 73013 | Oil & Gas Operator | Mar 2025 |
| 18 | Gulf Central Petroleum Corp. | Dallas, TX 75252 | Oil & Gas Operator | Jun 2025 |
| 19 | GWM Operating Company, LLC | Sugar Land, TX 77479 | Oil & Gas Operator | Jun 2025 |