OTTER TAIL CORPORATION 2,900,000 Shares Common Stock ($5.00 Par Value) UNDERWRITING AGREEMENT December 7, 2004Underwriting Agreement • December 13th, 2004 • Otter Tail Corp • Electric services • New York
UBS Securities LLC Robert W. Baird & Co. Incorporated A.G. Edwards & Sons, Inc. as Managing Underwriters c/o UBS Securities LLC 299 Park Avenue New York, New York 10171
