| Relationships | Role | Relationship Start | Relationship End |
| Gs Capital Partners Vi Offshore Fund, L.P. | Parent | 9/21/2008 | 12/31/2013 |
| Gscp Vi Offshore Knight Holdings Corp. | Parent | 9/21/2008 | 12/31/2013 |
| Kinder Morgan, Inc. | Subsidary | 8/14/2009 | 10/17/2012 |
| Relationships | Role | Relationship Start | Relationship End |
| Gs Capital Partners Vi Offshore Fund, L.P. | Parent | 9/21/2008 | 12/31/2013 |
| Gscp Vi Offshore Knight Holdings Corp. | Parent | 9/21/2008 | 12/31/2013 |
| Kinder Morgan, Inc. | Subsidary | 8/14/2009 | 10/17/2012 |