| Relationships | Role | Relationship Start | Relationship End |
| Norwest Limited Lp, Lllp | Parent | 8/27/2004 | |
| Itasca Partners Viii, Llc | Parent | 3/28/2012 | |
| Nec Viii, Llc | Subsidary | 8/12/2005 | |
| Cd&R Univar Nep Viii Co-Investor, Llc | Subsidary | 11/23/2010 | |
| Weg Holdings, Llc | Subsidary | 8/9/2007 | 6/5/2015 |