Omnicom to Pay $22.50 Per $1,000 of Zero Coupon

Omnicom Group Inc. OMC announced today that it will pay $22.50 per $1,000 principal amount of its Zero Coupon Zero Yield Convertible Notes Due 2032 to registered noteholders who have not, as of immediately following the close of business on August 2, 2010, exercised their right to require Omnicom to purchase their Notes or who have exercised their right to require Omnicom to repurchase their Notes but have withdrawn this request before the close of business on August 3, 2010. The payment will be made to qualifying noteholders on August 6, 2010. Omnicom issued $900 million of these Notes in 2002, of which approximately $252.8 million is currently outstanding.