SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K Current Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 10, 2003 ------------------------------ OMNICOM GROUP INC. -------------------------------------------------------------------------------- (Exact Name of Registrant as Specified in its Charter) New York -------------------------------------------------------------------------------- (State or Other Jurisdiction of Incorporation) 1-10551 13-1514814 ------------------------ ------------------------------------ (Commission File Number) (I.R.S. Employer Identification No.) 437 Madison Avenue, New York, New York 10022 -------------------------------------------------------------------------------- (Address of Principal Executive Offices) (Zip Code) (212) 415-3600 -------------------------------------------------------------------------------- (Registrant's Telephone Number, Including Area Code) Item 5. Other Events. Press Releases This Current Report on Form 8-K is being filed to provide the information set forth in Omnicom's June 10, 2003 press release, a copy of which is filed as Exhibit 99.1 hereto and incorporated herein by reference. Item 7. Financial Statements, Pro Forma Financial Information and Exhibits. (a) Exhibits. The following exhibit is filed herewith: 99.1 Press release dated June 10, 2003. 2 SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. OMNICOM GROUP INC. By: /s/ Philip J. Angelastro -------------------------------- Philip J. Angelastro Senior Vice President, Finance and Controller Date: June 11, 2003 3 EXHIBIT INDEX Exhibit Number Description ------- ------------ 99.1 Press Release dated June 10, 2003