OMNICOM GROUP INC. — Director's Dealing 2007

Dec 13, 2007

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: OMNICOM GROUP INC (OMC)
CIK: 0000029989
Period of Report: 2007-12-11

Reporting Person: DRU JEAN MARIE (CEO TBWA Worldwide)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2007-12-11	Common Stock, par value $0.15 per share	M	44400	$31.175	Acquired	69484	Direct
2007-12-11	Common Stock, par value $0.15 per share	S	2700	$49.00	Disposed	66784	Direct
2007-12-11	Common Stock, par value $0.15 per share	S	100	$49.05	Disposed	66684	Direct
2007-12-11	Common Stock, par value $0.15 per share	S	200	$49.09	Disposed	66484	Direct
2007-12-11	Common Stock, par value $0.15 per share	S	200	$49.13	Disposed	66284	Direct
2007-12-11	Common Stock, par value $0.15 per share	S	600	$49.14	Disposed	65684	Direct
2007-12-11	Common Stock, par value $0.15 per share	S	100	$49.18	Disposed	65584	Direct
2007-12-11	Common Stock, par value $0.15 per share	S	100	$49.20	Disposed	65484	Direct
2007-12-11	Common Stock, par value $0.15 per share	S	100	$49.21	Disposed	65384	Direct
2007-12-11	Common Stock, par value $0.15 per share	S	800	$49.22	Disposed	64584	Direct
2007-12-11	Common Stock, par value $0.15 per share	S	1800	$49.23	Disposed	62784	Direct
2007-12-11	Common Stock, par value $0.15 per share	S	1300	$49.24	Disposed	61484	Direct
2007-12-11	Common Stock, par value $0.15 per share	S	5900	$49.25	Disposed	55584	Direct
2007-12-11	Common Stock, par value $0.15 per share	S	3600	$49.26	Disposed	51984	Direct
2007-12-11	Common Stock, par value $0.15 per share	S	2600	$49.27	Disposed	49384	Direct
2007-12-11	Common Stock, par value $0.15 per share	S	4500	$49.28	Disposed	44884	Direct
2007-12-11	Common Stock, par value $0.15 per share	S	2700	$49.29	Disposed	42184	Direct
2007-12-11	Common Stock, par value $0.15 per share	S	8500	$49.30	Disposed	33684	Direct
2007-12-11	Common Stock, par value $0.15 per share	S	1100	$49.31	Disposed	32584	Direct
2007-12-11	Common Stock, par value $0.15 per share	S	700	$49.32	Disposed	31884	Direct
2007-12-11	Common Stock, par value $0.15 per share	S	700	$49.33	Disposed	31184	Direct
2007-12-11	Common Stock, par value $0.15 per share	S	1500	$49.34	Disposed	29684	Direct
2007-12-11	Common Stock, par value $0.15 per share	S	4000	$49.35	Disposed	25684	Direct
2007-12-11	Common Stock, par value $0.15 per share	S	500	$49.36	Disposed	25184	Direct
2007-12-11	Common Stock, par value $0.15 per share	S	100	$49.37	Disposed	25084	Direct
2007-12-12	Common Stock, par value $0.15 per share	M	200	$31.175	Acquired	25284	Direct
2007-12-12	Common Stock, par value $0.15 per share	S	200	$49.00	Disposed	25084	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2007-12-11	Employee Stock Option (right to buy)	$31.175	M	44400	Disposed	2011-10-02	Common Stock (44400)	Direct
2007-12-12	Employee Stock Option (right to buy)	$31.175	M	200	Disposed	2011-10-02	Common Stock (200)	Direct

Footnotes

F1: The number of shares reported reflects a two-for-one stock split effected in the form of a 100% stock dividend distributed on
June 25, 2007.

F2: This option was previously reported as an option covering 166,667 shares at an exercise price of $62.35 per share, and has
been adjusted as a result of a two-for-one stock split effected in the form of a 100% stock dividend distributed on June 25,
2007

F3: 33.33% of the shares vested on March 4, 2002, and the remaining 66.67% of the shares vested on October 2, 2007.