Success Stories
Deal Done

Advising Omnicom on Its Landmark Merger with IPG

Deal Done

Advising Omnicom on Its Landmark Merger with IPG

Brian SalsbergGina Gutzeit
Key Contacts
Brian Salsberg and Gina Gutzeit

Getting the basics right for the largest global merger of its kind.

Omnicom pursued the largest acquisition in advertising history when it announced its intent to acquire Interpublic Group (“IPG”) in December 2024. To make this complex transaction work required a unique combination of deep functional expertise in transaction fundamentals, including finance, accounting, competition law and economics and strategic communications, all under high scrutiny and intense media attention.

Our Impact

Hitting all the marks on a landmark complex and highly visible merger.

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Completed IPG merger in November 2025, creating the world’s largest marketing and sales entity with more than $25 billion in combined annual revenue after receiving necessary regulatory approvals and satisfying all closing conditions.

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Executed critical finance, accounting, regulatory and strategic communications workstreams, navigating heightened scrutiny and proactively addressing gaps that emerged during transaction execution.

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Helped integrate the two companies’ financial reporting systems to be ready to operate as one company.

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Executed a successful investor day post-close to effectively promote the newly created entity.

Our Role

Bringing deep expertise to bear on transaction fundamentals.

  1. Delivered deep technical accounting, regulatory compliance and finance function strategy support to address complex transaction accounting, reporting and execution challenges that arose during integration planning, deal close and post-close phases.

  2. Supported the internal and external launch of the Omnicom-IPG combined company’s value proposition, strategy and organizational structures, enabling leaders to execute integration priorities and address stakeholders.

  3. Expert economists from FTI Consulting subsidiary Compass Lexecon analyzed Omnicom and IPG internal client and industry competition data, prepared numerous competition analyses and assisted with legal submissions to the U.S. Federal Trade Commission and the Competition Bureau of Canada.

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