FILED PURSUANT TO RULE 424(B)(3)
REGISTRATION NO. 333-55386
$850,000,000
OMNICOM GROUP INC.
Liquid Yield Option(TM) Notes Due 2031
(Zero Coupon-Senior)
PROSPECTUS SUPPLEMENT DATED MARCH 26, 2003
TO PROSPECTUS DATED FEBRUARY 26, 2001
The selling securityholders table on page 30 of the prospectus is hereby
further amended to update the information to include the following entity as a
selling securityholder in the prospectus and to list its total amount of Liquid
Yield Option(TM) Notes due 2031:
AGGREGATE
PRINCIPAL AMOUNT COMMON COMMON
OF NOTES AT PERCENTAGE STOCK STOCK
MATURITY THAT OF NOTES OWNED PRIOR TO REGISTERED
NAME MAY BE SOLD OUTSTANDING CONVERSION HEREBY(1)
---- ---------------- ----------- -------------- ----------
Conseco Annuity Assurance -
Multi Bucket Annuity Convertible Bond Fund $4,000,000 * -- 36,360
* Less than 1%
----------
(1) Assumes conversion of all the holder's LYONs at a conversion rate of 9.09
shares of common stock per $1,000 principal amount at maturity of the
LYONs. However, this conversion rate will be subject to adjustment as
described under "Description of the LYONs -- Conversion Rights." As a
result, the amount of common stock issuable upon conversion of the notes
may increase or decrease in the future.
The preceding table has been prepared based upon information furnished to
us by the selling securityholder named in the table. From time to time,
additional information concerning ownership of the notes and common stock may be
known by certain holders thereof not named in the preceding table, with whom we
believe we have no affiliation. Information about the selling securityholder
may change over time. Any changed information will be set forth in supplements
of amendments to this prospectus.