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Oak Brook / Sycamore
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Oak Brook
Brian Coughlin, CPA, MST
Partner
bcoughlin@ghs.cpa
James Stewart, CPA, MST
Partner
jstewart@ghs.cpa
Michael Peckham, CPA
Partner
mpeckham@ghs.cpa
Kelly Laatz, CPA, MPA
Partner
klaatz@ghs.cpa
William Tucker, CPA, MSA
Partner
wtucker@ghs.cpa
Christine Gaffney, CPA, MST
Partner
cgaffney@ghs.cpa
Consultants
Tim TeBockhorst, CPA, MST
Tony DePaul, CPA
Staff Accountants
Brianne Thomas, CPA, Manager
Amanda Rathman, CPA, Manager
Andrew Ritter, CPA, Manager
Zack Hamaker, CPA, Manager
Shane Richey, CPA
Erich Olson
Barrett Evans
Oliver Stoklosa
Mariia Gavryliuk
Samuel Man
Eduardo Garcia
John Malickas
Kaley Moran
Zifang Wang
Alexandra Zgobica
Henry Zhang
Information Systems Manager
Matthew LaCavera
Administrative Staff
Joyce Lepczynski
Kelly Myers
Sandra Stetz
