OMNICOM GROUP INC. — Director's Dealing 2006

May 8, 2006

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: OMNICOM GROUP INC (OMC)
CIK: 0000029989
Period of Report: 2006-05-04

Reporting Person: HARRISON THOMAS L (Chrmn/CEO Divers. Agency Serv.)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2006-05-04	Common Stock, par value $0.15 per share	A	9000	—	Acquired	75444	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock, par value $0.15 per share	1767.13	Indirect

Footnotes

F1: These shares were acquired by the reporting person as a grant of restricted stock, which will vest 20% each year for the next
five years.

F2: This includes 2,444 shares acquired under Omnicom's employee stock purchase plan.