Joe Ash and Larry Freedman, Ash, Anos, Freedman & Logan LLC
Chicago Public Schools
Christopher B. Burke Engineering, Ltd., SPACECO Inc.
CSX Corporation
Deutsche Bank- Private Wealth Management
DeVry, Inc.
Environmental Systems Design, Inc.
Larry Freed, Joseph Freed and Associates
The Partners of Frontenac Company
Levenfeld Pearlstein, LLC
Mesirow Financial - Mesirow Insurance Services
Adam Meyers
David and Suzu Neithercut
Jeffrey S. Schottenstein and Stuart M. Wechsler, Merrill Lynch Private Banking & Investment Group
Solomon Cordwell Buenz
Sterling Partners
Superior Air-Ground Ambulance Service
T-Mobile USA, Inc.
William Blair & Company
Zillacomm Inc.
*as of 4/14/09