First Interstate BancSystem, Inc. and Great Western Bancorp, Inc. to Join Forces
BILLINGS, Mont. and SIOUX FALLS, S.D.–(BUSINESS WIRE)–First Interstate BancSystem, Inc. (NASDAQ: FIBK) (FIBK), parent company of First Interstate Bank, and Great Western Bancorp, Inc. (NYSE: GWB) (GWB), parent company of Great Western Bank, announced…