Investor Services

Investor Relations

Loren Hanson
Assistant Secretary
Phone: 218-739-8481
Email: lhanson@ottertail.com

Transfer Agent

Shareholder Services
Otter Tail Corporation
PO Box 496
Fergus Falls, MN 56538-0496
Phone: 800-664-1259 or 218-739-8479
Email: sharesvc@ottertail.com

Co-agent:
Shareowner Services
Continental Stock Transfer & Trust Company
17 Battery Place, 8th Floor
New York, NY 10004
Phone: 866-509-5585