X0303 4 2009-04-20 0 0000075129 OTTER TAIL CORP OTTR 0001191493 KOECK GEORGE A 215 S CASCADE ST FERGUS FALLS MN 56537-2801 0 1 0 0 Corp Secretary & Gen Counsel Common Stock 2009-04-20 4 A 0 3500 A 14208.7804 D Common Stock 767.8012 I ESOP Shares of Common Stock acquired under the Corporation's Stock Incentive Plan, which is a grant of Restricted Stock. The 3,500 shares granted on 4/20/09 vest 25% yearly commencing 4/8/2010. This grant has a FMV of $22.15. Total direct holdings include shares held in the Dividend Reinvestment Plan and shares acquired pursuant to Restricted Stock Awards and Performance Award distributions. /s/ George A Koeck by Debra J Lill, Attorney-in-Fact 2009-04-22