Omnicom Media Appoints Ellen Griffin Global Brand President of OMD

NEW YORK, NY (March 17, 2025) - Omnicom Media an Omnicom connected capability, today announced the appointment of Ellen Griffin as Global Brand President of OMD, the world's largest media agency network.

Following last week's announcement of Bradley Rogers as the new CEO of OMD USA, today's news underscores Omnicom Media's stated commitment to putting practitioner-leaders in top roles across its agencies, which OM describes as "the front lines of client success."

In her new role, Griffin, who most recently served as the agency's President, Global Chief Operating Officer, will oversee strategy, capabilities and service solutions for OMD globally, ensuring every market has the tools, talent, and technology needed to drive growth for its clients, the agency, and its people.

She succeeds George Manas, who has moved to Omnicom as Chief Growth and Solutions Officer.

"George has been an exceptional steward of the OMD brand over the past four years," said Florian Adamski, CEO of Omnicom Media. "Under his leadership, OMD significantly advanced its position as the world's best performing media agency, leading the Research Company Evaluating Media Agencies (RECMA) to describe OMD as "more than ever the leader" in its latest Diagnostic Report.

During his tenure, OMD was named Media Network of the Year at Cannes three times, including consecutive wins in 2024 and 2025. This remarkable record reflects both the strength of the agency and George's ability to drive collaboration among teams around the world - a talent that will serve him well in his new role."

Since joining the agency in 2018 as Global Innovation Director, Griffin has played a central role in evolving OMD's model, talent, and capabilities to meet the changing needs of modern marketers. Moving into the position of Global Chief Client Solutions Officer, she helped architect custom client solutions powered by the Omni Intelligence Platform, contributing to more than $2.5 billion in net new business wins. As OMD's first-ever Global COO, she was charged with driving the development and adoption of customized, future-ready operating models across the agency's global client base.

"As the orchestrators of client success, our agencies need true practitioner-leaders - executives who have worked side-by side with marketers as they navigate an increasingly challenging marketplace and know how to connect the full spectrum of Omnicom marketing capabilities needed to drive outsize growth," said Adamski.

"Ellen exemplifies that model. She brings deep experience leading marketing transformation for clients including Clorox, McDonald's, and PepsiCo, and she will ensure that OMD agencies around the world fully leverage Omnicom Media's market-leading strengths in scale, data, identity, commerce, and talent to unlock growth for our clients."

Griffin takes on her new role at a pivotal time for brands and marketers, as the pace of change across the marketing ecosystem continues to accelerate. Platforms are evolving, commerce is expanding, and AI is reshaping how consumers discover and engage with brands

"In this environment, clients need partners who help them navigate not only the challenges they see, but the ones they do not yet recognize," said Griffin. "OMD plays a critical role in helping clients move through this complexity. By connecting insights, platforms, data, and media strategy, we help clients anticipate change, unlock new opportunities for growth, and act with confidence in an increasingly dynamic landscape. My priority is ensuring our teams feel empowered, connected, and equipped to deliver exceptional results for their clients every day."

Griffin's appointment is effective immediately.