OMNICOM GROUP INC. — Director's Dealing 2003

Sep 8, 2003

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: OMNICOM GROUP INC (OMC)
CIK: 0000029989
Period of Report: 2003-09-05

Reporting Person: ROSENSHINE ALLEN (Chairman and CEO of BBDO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2003-09-05	Common Stock, $0.15 par value	M	30000	$12.1094	Acquired	257190	Direct
2003-09-05	Common Stock, $0.15 par value	S	30000	$79.85	Disposed	227190	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2003-09-05	Employee Stock Option (right to buy)	$12.1094	M	30000	Disposed	2004-03-02	Common Stock (30000)	Direct

Footnotes

F1: The option vested 30% in 1995; 30% in 1996 and 40% in 1997.

F2: Not Applicable.