X0202 4 2007-02-15 0 0000075129 OTTER TAIL CORP OTTR 0001191492 MOUG KEVIN G 215 S CASCADE ST FERGUS FALLS MN 56537-2801 0 1 0 0 CFO & Treasurer Common Stock 2007-02-15 4 M 0 4350 A 4350 D Common Stock 2007-02-15 4 F 0 1461 D 2889 D Performance Rights 2007-02-15 4 M 0 4350 D Common Stock 4350 0 D The grant price of this award was based on fair market value at the time of the grant which was $26.495. The vesting price of this award was based on fair market value of $32.78 per share. Performance Award. On 2/15/2007, 1,461 shares were withheld by the Corporation to pay taxes due upon vesting of this award, exempt pursuant to Rule 16b-3(e). See below for other holdings: 1. Direct holding of 823.6423 shares of Common Stock held jointly with his wife in the Dividend Reinvestment Plan. 2. Direct holding of 650.1405 shares of Common Stock held in the Employee Stock Purchase Plan. 3. Direct holding of 3,000 shares of Common Stock which is a grant of Restricted Stock. 4. Direct holding of 10,223 shares of Common Stock which no longer carries the restriction. 5. Indirect holding of 191.4797 shares of Common Stock held by ESOP. 6. Indirect holding of 11.7442 shares of Common Stock held by his children in custodian accounts. 7. 25,000 stock options with expiration date of 4/8/2011. This Performance Share Award had no conversion or exercise price established at the time of the grant. There is no specific "Exercisable Date" on this Performance Share Award. There is no specific "Expiration Date" on this Performance Share Award. The grant price of this award was based on fair market value at the time of the grant which was $26.495 and vested at a fair market value of $32.78 per share. /s/ Kevin G Moug by Debra J Lill -POA 2007-02-15