OMNICOM GROUP INC. — Director's Dealing 2006

Dec 22, 2006

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: OMNICOM GROUP INC (OMC)
CIK: 0000029989
Period of Report: 2006-12-20

Reporting Person: WEISENBURGER RANDALL J (Executive Vice President & CFO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2006-12-20	Common Stock, par value $0.15 per share	M	110200	$47.74	Acquired	221031	Direct
2006-12-20	Common Stock, par value $0.15 per share	S	110200	$104.26	Disposed	110831	Direct
2006-12-21	Common Stock, par value $0.15 per share	M	189800	$47.74	Acquired	300631	Direct
2006-12-21	Common Stock, par value $0.15 per share	S	99800	$104.26	Disposed	200831	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2006-12-20	Employee Stock Option (right to buy)	$47.74	M	110200	Disposed	2010-03-12	Common stock (110200)	Direct
2006-12-21	Employee Stock Option (right to buy)	$47.74	M	189800	Disposed	2010-03-12	Common stock (189800)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common stock, par value $0.15 per share	570.70	Indirect

Footnotes

F1: This includes 2,531 shares acquired under Omnicom's employee stock purchase plan.

F2: The reported sale price reflects the weighted average price of multiple transactions on December 20, 2006. The actual sales
prices for the transactions ranged from $104.07 to $104.95.

F3: The reported sale price reflects the weighted average price of multiple transactions on December 21, 2006. The actual sales
prices for the transactions ranged from $103.66 to $104.67.

F4: 30% of the shares vested on March 12, 2004; 30% of the shares vested on March 12, 2005; and the remaining 40% of the shares
vested on March 12, 2006.