2024- Topel Forman LLC
2023- PKF Mueller
2022- Adelfia LLC
2021- Mowery & Schoenfeld
2020- Kutchins, Robbins & Diamond Ltd.
2019- CliftonLarsonAllen
LLP
2018- Crowe Horwath LLP
2017- Wipfli LLP
2016- Doug Hart
2015-
Sylvia Kellogg
2014- Eric Dubrowski; Elizabeth Pritchard
2013- David
Hensely; Krista Piwonka
2012- Rob Cameron; Roann Kopel; David Hensley
2011- Scott Davis; Muthuswamy Sunder ; Mark Gilbert; Jarad M. K. Woiwode; Michelle Scheffki