X0303 4 2009-04-20 0 0000075129 OTTER TAIL CORP OTTR 0001191498 LIEBE ARVID R 215 S CASCADE ST FERGUS FALLS MN 56537-2801 1 0 0 0 Common Stock 2009-04-20 4 A 0 3600 A 10477.5463 D Common Stock 3388.913 I by IRA Phantom Stock Units (right to buy) Common Stock 1586.3355 D Stock Options (right to buy) 26.25 2001-04-09 2011-04-09 Common Stock 2000 2000 D Shares of Common Stock acquired under the Corporation's Stock Incentive Plan, which is a grant of Restricted Stock. The 3,600 shares granted 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 Award distributions. 1 -for -1 There is no specific "Exercisable Date" on the Phantom Stock Award. There is no specific "Expiration Date" on this Phantom Stock Award. Phantom Stock Units acquired under the 1999 Stock Incentive Plan at fair market value as part of the Compensation Program for Outside Directors. He first elected this method of payment in 2000. /s/ Arvid R Liebe by Debra J Lill, Attorney-in-Fact 2009-04-21