GTCR, a private equity firm, has promoted John Kos to managing director.

Kos initially joined GTCR in 2006. He was promoted to vice president in 2011 and principal in 2017. Among his contributions to the firm and its limited partners, Kos has led GTCR’s growth initiatives at several healthcare investments, including Antylia Scientific, Cedar Gate Technologies and Transaction Data Systems, and he also works closely with Water’s Edge/Riverchase Dermatology. He was involved in several past GTCR investments including CCS, Cole-Parmer Instrument Co., GreatCall and Xifin.

“On behalf of my partners at GTCR, we would like to congratulate John on his new leadership role at the firm,” said Dean Mihas, GTCR managing director and co-CEO. “He is an exceptional investment professional with tremendous healthcare insights. He has spearheaded the firm’s efforts in the healthcare IT industry, where GTCR has made several investments. He is an excellent addition to our experienced senior management team.”