Great Western Bank has named Amy Johnson as its Director of Treasury Management. Johnson, who will be based out of the Sioux Falls, SD, headquarters, will oversee the design, management and execution of Great Western Bank’s Treasury Management strategy. Johnson has more than 20 years of industry experience and has served in a variety of positions in Regional, Divisional, and National roles with sales management, service, technology, and process improvement. Before joining GWB, Johnson served as a TM Senior Vice President of a large national bank and most recently focused on building a new channel for easier customer integration.