Changes are continuing at Omnicom Oceania, with the agency announcing that it has appointed two senior leaders to its executive leadership team.
The move comes as the business continues to reshape its structure and strengthen its client delivery model following a sweeping global merger.
Kim Hamilton has been promoted to chief marketing and communications officer, Omnicom Oceania, expanding her remit beyond Omnicom Media Australia into a broader enterprise leadership role across the region.
At the same time, Paige Prettyman has been appointed chief of staff, a newly created role designed to support executive alignment and operational delivery.n
The appointments come as Omnicom Oceania continues to evolve its operating model, with CEO Nick Garrett positioning the business around a more connected, client-focused structure.
Hamilton steps into the newly expanded role after establishing Omnicom Media Australia’s first centralised marketing and growth function. In her new remit, she will lead enterprise brand, communications and market positioning across the region, while continuing to play a key role within the media division.
Garrett said the appointments reflect the group’s broader ambition to align its internal structure with the transformation it is advising clients to undertake.
“We talk a lot about helping our clients navigate transformation and elevating the role of marketing at an executive level. What’s important is that we’re doing the same ourselves.
“These appointments are about putting that into practice, building a business that is more connected, more focused on the customer, and set up to deliver real commercial impact.
“Kim has proven herself as a leader who delivers, driving growth, shaping our strategic direction and playing a central role in the transformation of our business and the value we create for clients,” he said.
Hamilton said she is focused on translating that transformation into clear outcomes.
“I’m genuinely energised by the vision and transformation that Nick, KK [Kristiaan Kroon, Omicom Media Australia CEO] and the broader team are building together at Omnicom Oceania. We are building something genuinely different, more connected, more capable and better set up to help our clients navigate increasing complexity.
“Now it’s about bringing that to life in the market and for our people – simple, clear and with impact.”
New chief of staff role adds operational focus
Prettyman joins Omnicom Oceania from Deloitte Digital, where she was managing director, following senior roles at Special Group Melbourne and Clemenger BBDO.
Her appointment brings together experience across creative, agency and consulting environments, aligning with the group’s push toward a more integrated model.
In the newly created chief of staff role, Prettyman will focus on driving alignment across the executive leadership team and ensuring that strategy translates into execution as the business scales.
Garrett said Prettyman’s cross-disciplinary background made her well-suited to the role, particularly as client expectations continue to evolve.
“Paige brings a strong mix of creative, agency and consulting experience, along with a clear understanding of what clients are looking for from partners today.
“This role is about making sure we stay aligned and focused as we scale, and that strategy turns into action,” he said.
Prettyman said the opportunity to bring together creativity, media and advisory under a more connected structure was a key driver behind the move.
“What’s really compelling about Omnicom Oceania is the opportunity to bring together creativity, media and advisory in a genuinely connected way and the impact that can have for clients,” she said.
She added that her experience across both agency and consulting environments had highlighted the value of integration when executed effectively, and that her focus would be on ensuring that translates into clear priorities, alignment and consistent delivery across the business.
Paige Prettyman
Merger backdrop reshapes local market
The leadership changes sit against a broader backdrop of structural change across Omnicom’s Australian and New Zealand operations following its A$13.5 billion acquisition of Interpublic Group in late 2025.
The deal triggered a significant reshaping of the business locally, including the merging of DDB Australia with Clemenger BBDO Australia into a single national agency under the Clemenger BBDO brand.
Globally, the consolidation has seen legacy creative brands folded into larger networks, while the combined business is now structured around five core divisions spanning media, PR, production, commerce and advertising.
The integration also came with workforce reductions, with layoffs representing around three per cent of the combined 128,000-strong workforce.
That follows earlier cuts across both organisations, as the newly merged entity moves to streamline operations and deliver scale efficiencies.
With annual revenue exceeding A$37 billion, the combined Omnicom-IPG group is now one of the largest marketing services networks globally, placing added pressure on regional leadership to deliver both integration and growth.