X0202 4 2007-04-09 0 0000075129 OTTER TAIL CORP OTTR 0001191496 EMMEN DENNIS R 215 S CASCADE ST FERGUS FALLS MN 56537-2801 1 0 0 0 Common Stock 2007-04-09 4 A 0 1900 35.045 A 4500 D Shares of Common Stock acquired under the Corporation's Stock Incentive Plan, which is a grant of Restricted Stock. The 1,900 shares granted 4/9/07 have a grant price of $35.045 and vest at 25% yearly commencing 4/8/08. See below for other holdings: 1. Direct holding of 115 shares of the $3.60 Preferred issue. 2. Direct holding of 3,000 shares of Common Stock held jointly with his wife. 3. Direct holding of 4,400 shares of Common Stock which no longer carries the restriction. 4. 2,000 stock options with expiration date of 4/9/2010. 5. 2,000 stock options with expiration date of 4/8/2011. /s/ Dennis R Emmen by Debra J Lill -POA 2007-04-11