X0202 4 2007-08-29 0 0000075129 OTTER TAIL CORP OTTR 0001278053 MACFARLANE CHARLES S 215 S CASCADE ST FERGUS FALLS MN 56537-2801 0 1 0 0 President, Otter Tail Power Co Common Stock 2007-08-29 4 M 0 3000 31.34 A 3730 D Common Stock 2007-08-29 4 S 0 3000 36.50 D 730 D Stock Options (right to buy) 31.34 2007-08-29 4 M 0 3000 0.00 D 2012-04-08 Common Stock 3000 0 D See below for other holdings: 1. Direct holding of 8,531.8771 shares of Common Stock held in the Dividend Reinvestment Plan. 2. Direct holding of 2,250 shares of Common Stock which is a grant of Restricted Stock. 3. Direct holding of 3,431 shares of Common Stock which no longer carries the restriction. 4. Direct holding of 5,065.8798 shares of Common Stock held in the Employee Stock Purchase Plan. 5. Indirect holding of 774.9786 shares of Common Stock held by ESOP. 6. Indirect holding of 162.4212 shares of Common Stock held by his children in custodian accounts. 7. 10,000 stock options with expiration date of 12/10/2011. 8. 8,000 stock options with expiration date of 4/14/2013. 9. 3,000 stock options with expiration date of 4/12/2014. 10. 3,000 stock options with expiration date of 4/11/2015. 11. 4,300 restricted stock units which vest 4/10/2010. 12. 3,450 restricted stock units which vest 4/8/2011. There is no specific "Exercisable Date" on these Stock Options. /s/ Charles S MacFarlane by Debra J Lill -POA 2007-08-30