John Minderides was hired by J.P. Morgan Chase & Co. as managing director to head the firm's transition management business in Europe, the Middle East and Africa. He will be based in London. Mr. Minderides replaces Rob Barrett, who left in April to pursue other opportunities, a spokeswoman said. Mr. Minderides was managing director at ITG Europe, a unit of New York-based ITG Group. Liz Sendewicz, an ITG spokeswoman, said the firm is searching for a replacement.