KAR Auction Services, Inc. announced that effective John Kett has assumed the position of chief executive officer and president of Insurance Auto Auctions, Inc. (IAA). Kett formerly served as the president and chief financial officer of IAA. Kett assumes the role of CEO from Tom O'Brien, who announced his decision to step down on January 9, 2014.

O'Brien will remain a member of KAR's board of directors until the company's next annual meeting of stockholders to be held on June 10, 2014, at which time he will step down from the board.