Mark Huntzinger, vice president of operations, Chicagoland Sunbelt

Mark Huntzinger has joined Chicagoland Sunbelt, a business brokerage, as vice president of operations. For the last two years, Huntzinger, 51, had been director of Sun Acquisitions, the M&A advisory arm of Sun Affiliates focused on buying and selling $5 million to $100 million companies in industries including services, health care, manufacturing, advertising, technology and transportation. Before that, he engineered turnarounds at Westell’s $65 million Network Service Access Division and Charles Industries’ $20 million Access