Black Hills Corporation announced as previously disclosed on Form 8-K filed on September 18, 2020, the company appointed Barry M. Granger and Scott M. Prochazka to the Board of Directors. At that time, the board of directors had not determined committee assignments. This Form 8-K/A amends the Form 8-K filed on September 18, 2020, by amending and restating Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers to include the committee assignments for Messrs. Granger and Prochazka, effective May 1, 2021. Barry M. Granger will serve on the Audit Committee and Scott M. Prochazka will serve on the Compensation Committee.