Matt Adams, current Chief Operating Officer of Assembly Global, will lead as Global CEO alongside Marissa Jiminez who will join the Stagwell Media Platform as Global Chief Trading and Solutions OfficerNEW YORK and LONDON, July 9, 2025 /PRNewswire/ -- Stagwell (NASDAQ: STGW), the challenger network built to transform marketing, today announced the launch of the Stagwell Media Platform (SMP), its centralized team of global media, technology and data experts designed to create client advantage through a smarte ...