Retired President of Northern States Power Company (NSP-MN), Xcel Energy s electric and gas utility company serving the states of Minnesota, North Dakota and South Dakota. Mr. Clark has more than 30 years of experience in the utility industry, having served as President of NSP-MN, Xcel s largest operating division, from 2015 to 2025. In this role he oversaw the electric generation, transmission and distribution for 1.6 million electric customers and natural gas distribution for 600,000 customers. Prior to that, from 2011 to 2015, he was Regional Vice President, Rates and Regulatory Affairs, for the company. In this role, he was responsible for the company s regulatory strategy. From 1999 to 2011, he served first as Assistant General Counsel and later Managing Attorney with Xcel Energy. Mr. Clark brings over three decades of extensive utility, public policy and leadership expertise and acumen to the Board. Following ten years of experience as the President of NSP-MN, Mr. Clark has an invaluable understanding of technical decision making and the nuances of long-term planning for large electric and natural gas providers. The Board significantly benefits from his breadth of knowledge of the utility industry, the regulatory environment, including relevant regulatory laws, and the service territory for Otter Tail Power Company. Director Since: 2026. Age at the time of the Annual Meeting: 59. Board Committees: Audit Committee, Corporate Governance Committee. Other Board Service: University of Minnesota Center for Transportation.