Omnicom Group Inc.: chief accounting officer retires, successor named

What happened Omnicom Group Inc filed an 8-K reporting that on Oct 1, 2026 Andrew Castellaneta retired from his role as the company’s Senior Vice President and Chief Accounting Officer, effective immediately. The filing reported that Mr. Castellaneta will remain an employee for a period of time to facilitate a smooth transition and that his retirement is not the result of any disagreement with the company on any matter relating to the company’s operations, policies or practices. The filing reported that on Oct 1, 2026 the board appointed Jordan Farnam as Vice President, Global Financial Reporting and Chief Accounting Officer, effective immediately.

Key details

• Andrew Castellaneta retired effective Oct 1, 2026 after more than 25 years at Omnicom Group Inc.
• Mr. Castellaneta will remain an employee for a period of time to facilitate a smooth transition.
• Jordan Farnam, age 44, was appointed effective Oct 1, 2026; he joined Omnicom in Jan 2024 as Vice President, Global Financial Reporting.
• Prior to joining Omnicom, Mr. Farnam was Corporate Controller for Consumer Edge LLC from 2022 to 2024 and Director, Technical Accounting for Spotify USA Inc. from 2020 to 2022; he previously served in roles at PricewaterhouseCoopers LLP, including as Assurance Director.

Why it may matter The company reported this information under Item 5.02 (Departure of Directors or Certain Officers; Election of Directors), which covers departures and appointments of certain officers and directors. This filing does not show why the insider traded or why the company acted.