- Bowman
- Cordogan, Clark & Associates
- CORE Construction
- Elrod Friedman LLP
- Engineering Enterprises, Inc.
- Illinois American Water
- K-Five Construction
- Klein, Thorpe and Jenkins, Ltd.
- Kluber Architects + Engineers
- Leopardo
- Morris Engineering, Inc.
- Power & Cronin, Ltd.
- SE3, LLC
- Speer Financial, Inc.
- Stifel
- WBK Engineering, LLC