| Relationships | Role | Relationship Start | Relationship End |
| Gs Global Infrastructure Partners I Employee Fund, L.P. | Parent | 9/21/2008 | |
| Bridge Street Opportunity Advisors, L.L.C. | Parent | 11/23/2015 | |
| Gs Infrastructure Partners I Employee Funds Gp, L.L.C. | Parent | 9/21/2008 | 11/22/2015 |
| Gs Global Infrastructure Partners I, L.P. | Subsidary | 9/21/2008 |