Mark Holtz President of the Technology Industry Group at the Bank of Ann Arbor Mark Holtz is the President of the Technology Industry Group at the Bank of Ann Arbor. Mark has worked in Commercial Banking for 23 years and with Bank of Ann Arbor for the last 17 years. His work there includes helping the area’s innovation-based companies and venture capital community. He has been helping local entrepreneurs, scientists, engineers, and business executives from the start-up phase throughout the entire business lifecycle.