Creativity. Innovation. Technology. Omnicom is a leading provider of data-inspired, creative marketing and sales solutions. Omnicom’s iconic agency brands are home to the industry’s most innovative communications specialists who are focused on driving intelligent business outcomes for their clients. see our agencies Corporate Responsibility Learn how Omnicom and our agencies’ culture of collaboration and creativity underpins everything we do for our clients, our people, our shareholders and the communities around us. learn more HEADLINE NEWS October 30, 2025 Omnicom and Interpublic Announce Extension of Exchange Offers in Connection with Expected Merger Closing Omnicom Group Inc. (“Omnicom”) (NYSE: OMC) and The Interpublic Group of Companies, Inc. (“IPG”) (NYSE: IPG) today announced that, in connection with the closing of the merger between Omnicom and IPG expected by the end of November, Omnicom has extended the expiration date of its previously announced exchange offers and consent solicitations for IPG’s outstanding notes (as set forth in Appendix A to this press release) from 5:00 p.m., New York City time, on October 31, 2025, to 5:00 p.m., New York City time, on November 28, 2025, unless further extended. read more October 21, 2025 Omnicom Reports Third Quarter 2025 Results October 8, 2025 Omnicom Schedules Third Quarter 2025 Earnings Release and Conference Call TALENT Our Greatest Asset We are committed to developing our employees through ongoing education and training. From those new to agency life to our seasoned leaders, everyone in the Omnicom family is afforded rich opportunities for professional growth. read more FOR INVESTORS Stock price $ full stock information Q2 2025 Results learn more Chairman’s Letter A letter from the Chairman and Chief Executive Officer read more