?- IBM Corporation
- SAS Institute Inc.
- Turner Construction Co.
- DPR Construction Inc.
- Fortis Construction Inc.
- Hensel Phelps Construction Co. Inc.
- HITT Contracting Inc.
- JE Dunn Construction Group Inc.
- MA Mortenson Company Inc.
- AECOM Ltd.
- Gilbane Building Company Inc.
- Clune Construction Company
L.P.
- Nabholz Corporation
- NTT Global Data Centers
- CyrusOne Inc.
- Cap Ingelec