$727,029,000 of Omnicom Zero Coupon Zero Yield Convertible Notes Due 2032 Receive Supplemental Interest Payment

NEW YORK, Aug. 2 /PRNewswire-FirstCall/ -- Omnicom Group Inc. (NYSE: OMC) announced today that holders of $727,029,000 of its outstanding Zero Coupon Zero Yield Convertible Notes due 2032 received $32.50 per $1,000 of notes in consideration for not exercising their right to require Omnicom to repurchase the notes.

Omnicom Group Inc. (NYSE: OMC) (www.omnicomgroup.com) is a leading global marketing and corporate communications company. Omnicom's branded networks and numerous specialty firms provide advertising, strategic media planning and buying, direct and promotional marketing, public relations and other specialty communications services to over 5,000 clients in more than 100 countries.

CONTACT: Randall Weisenburger of Omnicom Group Inc., +1-212-415-3393