X0303 4 2009-03-04 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 2009-03-04 4 P 0 1000 15.92 A 1292.3266 I By daughter Common Stock 2009-03-04 4 P 0 1000 15.88 A 1292.3266 I By son Common Stock 21428.269 D Common Stock 907.8438 I ESOP Stock Options (right to buy) 29.74 2002-12-10 2011-12-10 Common Stock 10000 10000 D Stock Options (right to buy) 26.495 2004-10-12 2014-04-12 Common Stock 3000 3000 D Stock Options (right to buy) 24.93 2005-10-11 2015-04-11 Common Stock 3000 3000 D Restricted Stock Units (right to buy) 2010-04-08 2010-04-08 Common Stock 4300 4300 D Restricted Stock Units (right to buy) 2011-04-08 2011-04-08 Common Stock 3450 3450 D Restricted Stock Units (right to buy) 2012-04-08 2012-04-08 Common Stock 3550 3550 D These shares were purchased through Raymond James Financial Services. The reporting person disclaims beneficial ownership of all securities held by his daughter, and this report should not be deemed an admission that the reporting person is the beneficial owner of such securities for purposes of Section 16 or for any other purpose. The reporting person disclaims beneficial ownership of all securities held by his son, and this report should not be deemed an admission that the reporting person is the beneficial owner of such securities for purposes of Section 16 or for any other purpose. Total direct holdings include shares held in the Dividend Reinvestment Plan, shares acquired through the Employee Stock Purchase Plan and shares acquired pursuant to Restricted Stock Award distributions. Stock options vest in cumulative annual installments of 25% beginning the date shown. Stock options vest 100% six months from the date of the grant. 1-for-1 /s/ Charles S MacFarlane by Debra J Lill, Attorney-in-Fact 2009-03-04