| 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 | Garrison LTD. | San Antonio, TX 78257 | Oil & Gas Operator | Jun 2025 |
| 4 | Gary Oil & Gas | Deer Park, TX 77536 | Oil & Gas Operator | Jun 2025 |
| 5 | Gasper Rice Resources, LTD. | Houston, TX 77068 | Oil & Gas Operator | Jun 2025 |
| 6 | Gcea, LLC | Graham, TX 76450 | Oil & Gas Operator | Mar 2008 |
| 7 | Gcer Onshore, LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2015 |
| 8 | Gec Operating, Inc. | Houston, TX 77024 | Oil & Gas Operator | Jun 2025 |
| 9 | Gemarmi Inc. | Cypress, TX 77433 | Oil & Gas Operator | Jun 2025 |
| 10 | Geodominion Petroleum | Corpus Chrsti, TX 78403 | Oil & Gas Operator | May 2012 |
| 11 | Geonatural Resources, Inc. | Dallas, TX 75240 | Oil & Gas Operator | Jun 2025 |
| 12 | Gillring Oil Company | Fort Worth, TX 76102 | Oil & Gas Operator | May 1994 |
| 13 | Ginger Oil Company (A) | The Woodlands, TX 77380 | Oil & Gas Operator | Jan 2016 |
| 14 | Glenn, Wayne E. & Assoc., Inc. | Dickinson, TX 77539 | Oil & Gas Operator | Jun 2005 |
| 15 | Goldenrod Gas, Inc. | Victoria, TX 77904 | Gas Operator | Jun 2025 |
| 16 | Goldking Operating Company, Inc. | Houston, TX 77002 | Oil & Gas Operator | Jun 2007 |
| 17 | Goldking Prod. Co. | Houston, TX 77002 | Oil & Gas Operator | Apr 1998 |
| 18 | Goldston Oil Corporation | Houston, TX 77257 | Oil & Gas Operator | Jun 2025 |
| 19 | Goliad Operating Company | Houston, TX 77265 | Oil & Gas Operator | Aug 2003 |
| 20 | Good Earth Services LLC | Orchard, TX 77464 | Oil & Gas Operator | Jun 2025 |
| 21 | Grand Resources Inc | Tulsa, OK 74137 | Oil & Gas Operator | Jun 2025 |
| 22 | Great Texas Crude Inc. | Fredericksbrg, TX 78624 | Oil & Gas Operator | Jun 2025 |
| 23 | Greenbrier Oper. Co. | Dallas, TX 75229 | Oil & Gas Operator | Feb 2001 |
| 24 | Griffin Petroleum Company | Midland, TX 79705 | Oil & Gas Operator | Jun 2025 |
| 25 | Gruy Petroleum Management Co. | Irving, TX 75014 | Oil & Gas Operator | Nov 2014 |
| 26 | Gulfstar Properties, Inc. | San Antonio, TX 78229 | Oil & Gas Operator | Jun 2025 |