Constantine S. Mihas

John D. Kos

John joined GTCR in 2006 and became a Principal in the Healthcare group in 2017. Prior to joining GTCR, he worked as an Analyst in the Healthcare investment banking group of Citigroup Global Markets in New York. John holds an MBA with distinction from Harvard Business School and a BS in finance with highest honors from the University of Illinois.

He currently serves as a Director of Cedar Gate Technologies, Riverchase Dermatology and Transaction Data Systems and works closely with XIFIN and GreatCall. He was previously involved in past GTCR investment Cole-Parmer, and previously served as a Director of past GTCR investment Correctional Healthcare Companies.