X0201 4 2004-04-08 0 0000075129 OTTER TAIL CORP OTTR 0001191483 ERICKSON JOHN D 215 S CASCADE ST FERGUS FALLS MN 56537-2801 0 1 0 0 President & CEO Common Stock 2004-04-08 4 F 0 5757.0000 26.5300 D 44200.0000 D Grants of Restricted Stock. On 4/8/2004, 5,757 shares were withheld by the Corporation to pay taxes due upon vesting of restricted stock, exempt pursuant to Rule 16b-3(e). 44,200 shares remain restricted. See below for other holdings: 1. Direct holding of 97.7386 shares held in the Dividend Reinvestment Plan. 2. Direct holding of 6,137.9385 shares held in the Employee Stock Purchase Plan. 3. Direct holding of 20,443 shares which no longer carries the restriction. 4. Indirect holding of 4,981.3107 shares held by ESOP. 5. 16,000 stock options with expiration date of 2/22/2009. 6. 25,000 stock options with expiration date of 4/9/2010. 7. 75,000 stock options with expiration date of 4/8/2011. /s/ John D Erickson by Debra J Lill -POA 2004-04-09