- AT&T
- Bowman
- Civiltech Engineering, Inc.
- CORE Construction
- Elrod Friedman LLP
- Engineering Enterprises, Inc.
- Farnsworth Group, Inc.
- FGM Architects
- Fifth Third Bank
- Illinois American Water
- Leopardo
- Morris Engineering, Inc.
- Nicor Gas
- SE3, LLC
- Stifel
- Thomas Engineering Group, LLC