X0201 4 2004-04-08 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 2004-04-08 4 F 0 1155.0000 26.5300 D 7708.0000 D Grants of Restricted Stock. On 4/8/2004, 1,155 shares were withheld by the Corporation to pay taxes due upon vesting of restricted stock, exempt pursuant to Rule 16b-3(e). 7,708 shares remain restricted. See below for other holdings: 1. Direct holding of 1,695 shares which no longer carries the restriction. 2. Indirect holding of 623.3559 shares held by ESOP. 3. 2,500 stock options with expiration date of 8/2/2009. 4. 4,125 stock options with expiration date of 4/9/2010. 5. 20,000 stock options with expiration date of 4/8/2011. /s/ George A Koeck by Debra J Lill -POA 2004-04-09