| 1 | Anschutz Exploration Corporation | Denver, CO 80202 | Oil & Gas Operator | Dec 2018 |
| 2 | Chesapeake Appalachia LLC | Oklahoma City, OK 73118 | Oil & Gas Operator | May 2018 |
| 3 | Epsilon Energy USA, Inc. | Houston, TX 77060 | Oil & Gas Operator | May 2018 |
| 4 | Forexco, Inc. | Greensboro, NC 27408 | Oil & Gas Operator | Dec 2016 |
| 5 | Fortuna Energy Inc. | | Gas Operator | Dec 2000 |
| 6 | Potter McKean Resources Inc | Shinglehouse, PA 16748 | Gas Operator | Dec 2007 |
| 7 | Smith, Albert E. Jr. & Allan E. | Van Etten, NY 14889 | Gas Operator | Dec 2017 |
| 8 | Talisman Energy USA Inc. | The Woodlands, TX 77381 | Oil & Gas Operator | Dec 2017 |