"After a string of major account losses, WPP’s GroupM today announced that Doug Checkeris, North American CEO of MediaCom, is leaving the agency and will be replaced by longtime MediaCom exec Harvey Goldhersz,"  Advertising Age reports.

According to the article, "During the past 12 months, MediaCom has lost several large accounts, culminating late last month when it saw one of its biggest, the $1.4 billion GlaxoSmithKline account, defect to Omnicom Group’s PHD. The string of losses also includes Diageo ($130 million), Darden’s Red Lobster planning business ($119 million), Ethan Allen ($23 million), JetBlue ($10 million), Lifetime Entertainment ($40 million) and the American Egg Board ($13 million). "

To see the entire Ad Age article, please click here.