Ellen Griffin, Global Brand President, OMDOmnicom Media, an Omnicom connected capability, has appointed Ellen Griffin as Global Brand President of OMD effective immediately.
Following last week’s appointment of Bradley Rogers as the new CEO of OMD USA, this 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.
Florian Adamski, CEO of Omnicom Media, said, “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.”
Adamski added, “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.”
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 $2.5bn in net new business wins.
As OMD’s first‑ever Global COO, she was charged with driving the development and adoption of customised, future‑ready operating models across the agency’s global client base.
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 recognise,” 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 succeeds George Manas, who has moved to Omnicom at the group level to serve as Chief Growth and Solutions Officer.
“George has been an exceptional steward of the OMD brand over the past four years,” said Adamski, adding that “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 Manas’ tenure, OMD was named Media Network of the Year at Cannes three times, including consecutive wins in 2024 and 2025.
