Investors from both Omnicom Group and Interpublic Group have decisively endorsed Omnicom’s $13 billion bid to acquire IPG. During concurrent Special Shareholder Meetings on March 18, 2025, the proposal garnered support from more than 90% of participants.

This landmark consolidation, initially revealed in December 2024, will establish an advertising titan projected to yield $25.6 billion in yearly earnings. The unified company will maintain a global workforce exceeding 100,000 professionals while offering comprehensive marketing and communications expertise.

The negotiated equity exchange provides IPG investors with 0.344 Omnicom shares per IPG share held. Upon finalization, existing Omnicom investors will maintain a 60.6% majority stake, with IPG shareholders receiving 39.4% ownership on a fully diluted basis. The consolidated enterprise will preserve the Omnicom identity and continue its NYSE listing under the “OMC” symbol.

In the aftermath of the vote, leadership expressed enthusiasm about future prospects. Krakowsky from IPG remarked that the strong endorsement “demonstrates our capability to forge one of the industry’s most innovative, customer-centered organizations, generating substantial value for investors in the coming years.”