Over the last six years, New Ulm-based Citizens Bank Minnesota has grown by nearly a third and anticipates finishing 2012 among the state's top 50 earning banks. The difference has come from the dynamic leadership of Luther Henry (Lou) Geistfeld and the unique opportunity afforded him as president of a bank with 400 shareholders and a fun-loving staff that finds new ways to attract customers. Geistfeld, the 59-year-old banker who has been at the helm of the company for the last 25 years, is NorthWestern Financial Review's 2013 selection for Banker of the Year. The award is sponsored by Bell State Bank & Trust of Fargo, N.D.