Constantine S. Mihas

John D. Kos

John joined GTCR in 2006 and is a Principal in the Healthcare group. Prior to joining GTCR, he worked as an Analyst in the Healthcare investment banking group of Citigroup Global Markets in New York. John focuses on investments in healthcare technology and healthcare services for GTCR. 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.