OMNICOM GROUP INC. — Director's Dealing 2006

Jan 6, 2006

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: OMNICOM GROUP INC (OMC)
CIK: 0000029989
Period of Report: 2006-01-03

Reporting Person: WREN JOHN (Director, President and CEO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2006-01-03	Common Stock, par value $0.15 per share	M	200000	$19.72	Acquired	566690	Direct
2006-01-03	Common Stock, par value $0.15 per share	S	176500	$86.25	Disposed	390190	Direct
2006-01-03	Common Stock, par value $0.15 per share	S	13300	$86.26	Disposed	376890	Direct
2006-01-03	Common Stock, par value $0.15 per share	S	7200	$86.27	Disposed	369690	Direct
2006-01-03	Common Stock, par value $0.15 per share	S	1900	$86.28	Disposed	367790	Direct
2006-01-03	Common Stock, par value $0.15 per share	S	1100	$86.29	Disposed	366690	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2006-01-03	Employee Stock Option (right to buy)	$19.72	M	200000	Disposed	2006-02-27	Common Stock (200000)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock, par value $0.15 per share	9984.31	Indirect

Footnotes

F1: Includes 92,996 shares the payout of which has been deferred at the election of the holder.

F2: 30% of the shares vested on February 27, 1997; 30% of the shares vested on February 27, 1998; and the remaining 40% of the shares vested on February 27, 1999.