Arnold MPG Ups Exec

BOSTON — Steve Moynihan has been named managing director of Arnold MPG. He succeeds John Gaffney, who was elevated in May to chief operating officer of parent Media Planning Group USA, a unit of Havas.

Moynihan, 35, takes the reins of an estimated $1 billion media planning and buying operation that works for most domestic Arnold clients. He will report to Gaffney. Moynihan has been with the Boston-based company for two years, most recently as svp, group media director on Arnold’s largest account, the $350 million Volkswagen of America business.