Wavemaker US Appoints New Chief Strategy Officer Wavemaker US Appoints New Chief Strategy Officer NEW YORK, Jan. 21, 2021 — Wavemaker has appointed Dennis Potgraven to the role of Chief Strategy Officer U.S., effective immediately. Dennis will be responsible for leading Wavemaker’s Strategy and Planning practice, activating Wavemaker’s Provocative Planning approach to create new growth opportunities across a diverse client portfolio. Dennis joins from Havas Group, where he led the strategy teams for the creative, digital and media businesses as Chief Strategy Officer for the greater Chinese market. An international marketing professional, Dennis brings extensive agency experience in establishing brands, delivering integrated marketing communication and creating customer value.