Mark O'Brien

Mark O'Brien is the CEO of Omnicom Brand Consulting Group.¹ O'Brien began his career at Arthur Andersen before joining the DDB organization in 1994, subsequently moving to New York to serve as CFO of Griffin Bacal and later taking on the role of Director of Worldwide Finance at DDB, where he oversaw financial reporting, acquisitions, and fee negotiations with major clients.² In 2010, he became President and CEO of DDB North America.² He then assumed the role of CFO at Interbrand before being named COO of Omnicom's newly formed Brand Consulting Group.³ Source 1: humantic.ai — Humantic AI Profile for Mark O'Brien, CEO, Omnicom Brand ... Source 2: adweek.com — Interbrand Makes Executive Changes, Hires Former DDB ... Source 3: prnewswire.com — Omnicom Forms Brand Consulting Group