| 1 | Arco Oil & Gas Co., Div. Of Atlantic Richfield | | Oil & Gas Operator | Jul 1992 |
| 2 | Browning & Welch, Inc. | | Oil & Gas Operator | Mar 2005 |
| 3 | Finley Resources Inc | Fort Worth, TX 76113 | Oil & Gas Operator | Dec 2024 |
| 4 | Gibraltar Energy Co., Inc. & Richard H. Mason | | Gas Operator | Aug 1995 |
| 5 | Gulf Pine Energy, LP | | Oil & Gas Operator | Jun 2024 |
| 6 | Hughes Eastern Corporation | Ridgeland, MS 39157 | Oil & Gas Operator | Jul 2024 |
| 7 | Jabsco Oil Operating, LLC | Tuscaloosa, AL 35401 | Oil & Gas Operator | Jul 2024 |
| 8 | Justiss Oil Co., Inc.-Munoco Co. | | Oil & Gas Operator | Dec 2008 |
| 9 | Justiss Oil Co., Inc.-Munoco Co., L.C. | | Gas Operator | Mar 2001 |
| 10 | Justiss Oil Company, Inc. | Jena, LA 71342 | Oil & Gas Operator | Jul 2024 |
| 11 | Land And Natural Resource Development, Inc. | Northport, AL 35473 | Oil & Gas Operator | Jul 2024 |
| 12 | Medallion Exploration | Holladay, UT 84117 | Oil & Gas Operator | Dec 2015 |
| 13 | Meridian Oil Inc. | Houston, TX 77210 | Oil & Gas Operator | Aug 1996 |
| 14 | Moon-Hines-Tigrett Operating Co., Inc. | | Oil & Gas Operator | Jul 2024 |
| 15 | Morrow Oil & Gas Co. | Terry, MS 39170 | Oil & Gas Operator | Jul 2024 |
| 16 | Natural Gas & Oil, Inc. | Fayette, AL 35555 | Oil & Gas Operator | Jul 2024 |
| 17 | Pacific Enterprises Oil Co USA | Dallas, TX 75201 | Oil & Gas Operator | Feb 2001 |
| 18 | Peco Foods, Inc. | | Oil & Gas Operator | Jun 2024 |
| 19 | S. Lavon Evans, Jr. Operating Co., Inc. | | Oil & Gas Operator | Aug 2014 |
| 20 | Saga Petroleum Limited Liability Company Of Colorado | | Gas Operator | Dec 2014 |
| 21 | Samson Resources Company | Tulsa, OK 74103 | Oil & Gas Operator | Sep 2024 |
| 22 | Southland Royalty Company | Houston, TX 77210 | Oil & Gas Operator | Sep 2011 |