X0306 4 2016-04-11 0 0001466593 Otter Tail Corp OTTR 0001358676 Joyce Nelson Schuette 215 S CASCADE ST FERGUS FALLS MN 56537-2801 1 0 0 0 Common Stock 2016-04-11 4 A 0 2900 A 29332 D Shares of Common Stock acquired under the 2014 Sock Incentive Plan, which is a grant of Restricted Stock. The 2,900 shares granted 4/11/2016 vest 25% yearly commencing on 4/8/2017. This grant has a fair market value of $28.66. Total direct holdings include shares acquired individually in the Dividend Reinvestment Plan and acquired pursuant to Restricted Stock Award distributions. /s/Joyce Nelson Schuette by Ella Leapaldt, Attorney-in-Fact 2016-04-12