OMNICOM GROUP INC. — Director's Dealing 2007

Dec 21, 2007

SEC Form 3 — Initial Statement of Beneficial Ownership

Issuer: OMNICOM GROUP INC (OMC)
CIK: 0000029989
Period of Report: 2007-12-17

Reporting Person: Carroll Thomas (President & CEO TBWA Worldwide)

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock, par value $0.15 per share	23361	Direct

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Employee Stock Option (right to buy)	$31.175	2011-10-02	Common Stock (80000)		Direct
Employee Stock Option (right to buy)	$46.7725	2012-04-12	Common Stock (60000)		Direct

Footnotes

F1: Includes 19,600 shares of restricted stock awarded pursuant to Omnicom's equity incentive plan, which are subject to
forfeiture.

F2: Includes 3,761 shares acquired under Omnicom's employee stock purchase plan.

F3: The option is fully exercisable.