X0306 4 2022-03-31 0001466593 Otter Tail Corp OTTR 0001901903 LeBeau Michael E 215 S CASCADE STREET FERGUS FALLS MN 56537 1 Common Stock 2022-03-31 4 A 0 142 63.1282 A 142 D Mr. LeBeau has elected to receive shares of Otter Tail Corporation common stock in lieu of part of his quarterly retainer for his service on the Board of Directors. The shares will be issued pursuant to Otter Tail Corporation's Compensation Plan for Outside Directors. Total direct holdings include shares received pursuant to Otter Tail Corporation's Compensation Plan for Outside Directors. /s/ Michael E LeBeau by Ella Leapaldt, Attorney-in-Fact 2022-04-01