Omnicom to Pay $40.00 Per $1,000 to Noteholders Who Consent to Certain Amendments to Its Zero Coupon Zero Yield Convertible Notes Due 2038

NEW YORK, June 10 /PRNewswire-FirstCall/ -- Omnicom Group Inc. (NYSE: OMC) announced today that it is seeking the consent of the holders of its Zero Coupon Zero Yield Convertible Notes Due 2038 (the "Notes") to amend the Notes and the related indenture to, among other things, (i) have noteholders waive their right to contingent cash interest, if payable, from December 15, 2010 through and including December 15, 2013 and (ii) eliminate Omnicom's right to redeem the Notes prior to June 17, 2013. The consent solicitation will expire on July 9, 2010.

Pursuant to the consent solicitation, Omnicom will make a cash payment equal to $40.00 per $1,000 aggregate principal amount of Notes, as follows:

• as promptly as practicable after June 18, 2010, to a noteholder who (i) has not, as of immediately following the close of business on June 15, 2010, exercised its right pursuant to the indenture to require Omnicom to repurchase its Notes (the "Put Right") or, if exercised, has withdrawn such exercise by the close of business on June 16, 2010, and (ii) has delivered and not withdrawn a valid consent to the amendments described above prior to the close of business on June 18, 2010; or

• as promptly as practicable following July 9, 2010 (the expiration date of the consent solicitation), to a noteholder who (i) has not, as of immediately following the close of business on June 15, 2010, exercised its Put Right or, if exercised, has withdrawn such exercise by the close of business on June 16, 2010, and (ii) has delivered and not withdrawn a valid consent to the amendments described above after June 18, 2010 and prior to the close of business on July 9, 2010.

This press release is not an offer to purchase, a solicitation of an offer to purchase or a solicitation of consents with respect to any Notes, nor is this announcement an offer or solicitation of an offer to sell new securities. The consent solicitation is being made solely by the Consent Solicitation Statement, copies of which are available from Omnicom on its website (http://www.omnicomgroup.com) via this link or by calling Omnicom at (212) 415-3393.

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, digital and interactive marketing, direct and promotional marketing, public relations and other specialty communications services to over 5,000 clients in more than 100 countries.

SOURCE Omnicom Group Inc.