On December 22, 2021, Great Western Bancorp, Inc. and First Interstate BancSystem, Inc. announced that they have received regulatory approval from the Board of Governors of the Federal Reserve System and the Montana Division of Banking to complete the previously announced business combination transaction (the Transaction") between FIBK and GWB pursuant to the Agreement and Plan of Merger dated as of September 15, 2021, by and between FIBK and GWB. Completion of the Transaction remains subject to customary closing conditions, including regulatory approval from the Division of Banking of the South Dakota Department of Labor and Regulations and receipt of the requisite approvals of the shareholders of FIBK and stockholders of GWB at their upcoming special meetings on January 19, 2022. Assuming such conditions are satisfied, the Transaction is expected to close in February 2022.