KAR Auction Services, Inc. announced that John Hammer has been named as President of the company’s ADESA business unit. The appointment follows the resignation of Stéphane St-Hilaire who led ADESA since early 2014. Hammer previously served as the CEO of KAR’s Automotive Finance Corporation business before leaving the company in 2016. Hammer will officially re-join the company effective February 26, 2018. Hammer will oversee all ADESA operations, including the company’s 75 auction locations across the US, Canada and Mexico. He will focus on integrating new technology into ADESA’s online and physical auction marketplaces, expanding the company’s product and service offerings and transforming the ADESA customer experience. Hammer will report directly to Hallett and will serve as a member of KAR’s Senior Leadership Team. Hammer recently served as the CEO of Lawrenceville, Georgia-based U.S. Auto Sales, Inc. He succeeds St-Hilaire, who has agreed to remain at ADESA through the end of February 2018 to help ensure a smooth transition. St-Hilaire joined ADESA Canada in 1998 as chief financial officer.