


BANKERS RETIREMENT SERVICES, INC.
FIRST FINANCIAL CORPORATION
GOFEN AND GLOSSBERG, L.L.C.
AMI BENEFIT PLAN ADMINISTRATORS, INC.
PROVIDENT TRUST COMPANY
OAK ASSOCIATES LTD.
THE FARMERS & MERCHANTS STATE BANK
WISCONSIN FARM BUREAU FEDERATION COOPERATIVE
WYNNCHURCH CAPITAL, L.P.
CARDINAL INVESTMENT ADVISORS, LLC.