| Relationships | Role | Relationship Start | Relationship End |
| North Haven Infrastructure Partners A Lp | Parent | 1/22/2009 | |
| North Haven Infrastructure Partners A Sub Lp | Subsidary | 8/26/2013 |
| Relationships | Role | Relationship Start | Relationship End |
| North Haven Infrastructure Partners A Lp | Parent | 1/22/2009 | |
| North Haven Infrastructure Partners A Sub Lp | Subsidary | 8/26/2013 |