Schifferdecker has served as President & CEO of GNBank, NA since 2003. Schifferdecker, a graduate of William Jewell College and the ABA Stonier Graduate School of Banking, previously worked as a senior audit manager at KPMG in Kansas City, Mo., where he worked with a large number of community banks in financial, regulatory and management areas. He served on the board of directors of the Federal Reserve Bank of Kansas City and the Bankers' Bank of Kansas, N.A. He is also active in the Kansas Bankers Association.