Margo Georgiadis to Become Mattel’s New CEO Joanna Padovano Tong January 17, 2017 Top Stories EL SEGUNDO: Margaret “Margo” H. Georgiadis has been appointed as the new CEO of Mattel, effective February 8. The content you are trying to access is only available to members. Log In Register Margo Georgiadis Mattel 2017-01-17 Joanna Padovano Tong Share