On August 2, 2013, the Board of Directors of Otter Tail Corporation elected Steven L. Fritze to serve as a member of the Board of Directors. Mr. Fritze fills the vacancy created by the resignation of Mark W. Olson, which was effective May 14, 2013. The appointment is effective August 15, 2013.

He will serve for the remainder of that term, which expires on the date of the Company's 2016 Annual Meeting of Shareholders. Mr. Fritze has not been appointed to any Committees of the Board of Directors at this time. Mr. Fritze is the former Chief Financial Officer of EcoLab Inc. He retired from EcoLab effective December 31, 2012 after a career extending more than 32 years with the company.