Omnicom and IPG Shareholders Approve $13 Billion Merger

The deal to create the world's largest advertising network faces further FTC regulatory review for potential anti-competitive concerns.

Shareholders of both Omnicom and Interpublic Group (IPG) overwhelmingly approved the $13 billion all-stock merger on March 18, 2025.
The combined company is projected to generate $25.6 billion in annual revenue, with $750 million in cost synergies expected.
Omnicom shareholders will own 60.6% of the merged entity, while IPG shareholders will hold 39.4%.
The U.S. Federal Trade Commission (FTC) has requested additional information to assess potential anti-competitive effects, which could delay or challenge the merger.
The merger is expected to close in the second half of 2025, pending regulatory approvals and other customary conditions.