| Relationships | Role | Relationship Start | Relationship End |
| Gs Infrastructure Advisors 2006, L.L.C. | Parent | 9/21/2008 | |
| Goldman Sachs Group, Inc., The | Parent | 9/21/2008 | 12/18/2015 |
| Gs Institutional Infrastructure Matador C.V. | Subsidary | 9/21/2008 | |
| Matador Gen Par B.V. | Subsidary | 9/21/2008 | |
| Texas Energy Future Capital Holdings Llc | Subsidary | 9/21/2008 | |
| Sinatra Sarl | Subsidary | 11/1/2009 | 9/15/2016 |
| Admiral Institutional S.A.R.L. | Subsidary | 9/21/2008 | 7/7/2015 |
| Gspx, L.P. | Subsidary | 9/21/2008 | 12/9/2014 |
| Kinder Morgan, Inc. | Subsidary | 8/14/2009 | 10/17/2012 |