All Brands Owned by The Interpublic Group of Companies, Inc.

Who owns Interpublic Group?
Interpublic Group is now a wholly owned subsidiary of Omnicom Group. Omnicom completed its acquisition of IPG on November 26, 2025, in an all-stock transaction. Each IPG share converted to 0.344 Omnicom shares. Legacy Omnicom shareholders own approximately 60.6% of the combined company and legacy IPG shareholders own approximately 39.4%. IPG common stock ceased trading on the NYSE.

Is Interpublic Group publicly traded?
IPG was publicly traded on the New York Stock Exchange under the ticker IPG until November 26, 2025. After the Omnicom acquisition closed, IPG common stock ceased trading. The combined company, Omnicom Group, trades on the NYSE under the ticker OMC. Former IPG shareholders now hold Omnicom shares.

When was Interpublic Group founded?
IPG was incorporated in Delaware in September 1930 as McCann-Erickson Incorporated, combining agency businesses founded in 1902 by Alfred W. Erickson and in 1911 by Harrison K. McCann. The company adopted the Interpublic Group name in January 1961 when it restructured as a holding company to manage its growing portfolio of agency brands.

What are IPG's main agency networks?
IPG's main agency networks include McCann and FCB in creative advertising, IPG Mediabrands (UM, Initiative, Mediahub) in media buying, Golin and Weber Shandwick in public relations, IPG Health in healthcare marketing, Acxiom and KINESSO in data and technology, Jack Morton and Momentum in experiential marketing, and Octagon in sports and entertainment marketing.

What was IPG's revenue?
IPG reported total revenue of $10.7 billion in FY2024, including billable expenses, and net revenue of $9.2 billion. Reported net income was $689.5 million, and adjusted EBITA was $1.5 billion with a margin of 16.6%. In 2025, revenue declined, with the company guiding to an organic net revenue decrease of 1% to 2% for the full year due to client account losses.

How did the Omnicom acquisition work?
Omnicom and IPG announced a merger agreement on December 8, 2024. The all-stock transaction closed on November 26, 2025, after regulatory approval from the FTC and European Commission. Each IPG share converted to 0.344 Omnicom shares. The combined company has pro forma revenue exceeding $25 billion and targets $1.5 billion in cost synergies, including $900 million in 2026.

Does IPG own Octagon?
Yes. IPG acquired the sports marketing agency Advantage International in 1997 and combined it with the British agency AGI Group in 1998 under the Octagon name. Octagon became IPG's dedicated sports and entertainment marketing platform. Octagon ranked fourth on the Forbes 2025 Most Valuable Sports Agencies list with approximately $463 million in maximum commissions.

Where is Interpublic Group headquartered?
IPG is headquartered in New York, New York, USA. The company was incorporated in Delaware. IPG operated in approximately 56 countries before the Omnicom acquisition, with about 21,100 employees in the United States and 32,200 internationally as of December 31, 2024.