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