Company Update

UNITED STATES 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): February 28, 2024       OMNICOM GROUP INC. (Exact name of registrant as specified in its charter)       New York   1-10551   13-1514814 (State or other jurisdiction   (Commission File Number)   (IRS Employer of incorporation)       Identification No.)    280 Park Avenue , New York , NY   10017 (Address of principal executive offices)   (Zip Code)   Registrant’s telephone number, including area code: ( 212 ) 415-3600   Not Applicable (Former name or former address, if changed since last report)       Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions ( see General Instruction A.2. below):     ☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)   ☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)   ☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))   ☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))   Securities registered pursuant to Section 12(b) of the Act:    Title of each class   Trading Symbol   Name of each exchange on which registered Common Stock, par value $0.15 per share   OMC   New York Stock Exchange 0.800% Senior Notes due 2027   OMC/27   New York Stock Exchange 1.400% Senior Notes due 2031   OMC/31   New York Stock Exchange 2.250% Senior Notes due 2033   OMC/33   New York Stock Exchange   Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).   Emerging growth company ☐   If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐             Item 8.01. Other Events.   On February 28, 2024, Omnicom Finance Holdings plc (the “Issuer”), a wholly owned indirect subsidiary of Omnicom Group Inc. (the “Guarantor”), announced the pricing of its public offering of €600 million aggregate principal amount of 3.700% Senior Notes due 2032 (the “Notes”). The Notes will be fully and unconditionally guaranteed by the Guarantor. The Notes will mature on March 6, 2032. The transaction is expected to close on March 6, 2024, subject to customary closing conditions. In connection with the offering, the Issuer and the Guarantor entered into an underwriting agreement dated February 28, 2024 (the “Underwriting Agreement”), with Barclays Bank PLC, BNP Paribas, HSBC Bank plc and J.P. Morgan Securities plc, as representatives of the several underwriters, and the other underwriters named therein. The Underwriting Agreement includes the terms and conditions of the offer and sale of the Notes, indemnification and contribution obligations and other terms and conditions customary in agreements of this type. The foregoing disclosure is qualified in its entirety by reference to the Underwriting Agreement, which is attached hereto as Exhibit 1.1 and is incorporated herein by reference.   The Notes will be issued under the base indenture, to be entered into among the Issuer, the Guarantor and Deutsche Bank Trust Company Americas, as trustee (the “Trustee”), as supplemented by the First Supplemental Indenture thereto to be entered into among the Issuer, the Guarantor and the Trustee.   The Issuer expects to receive net proceeds, after deducting the underwriting discount and estimated offering expenses, of approximately €593.9 million and intends to use such net proceeds for general corporate purposes, which could include working capital expenditures, fixed asset expenditures, acquisitions, repayment of commercial paper and short-term debt, refinancing of other debt, repurchases of the Guarantor’s common stock or other capital transactions.   The Notes are being offered pursuant to the Issuer’s and the Guarantor’s shelf registration statement on Form S-3 (File No. 333-261046), which became effective upon filing with the Securities and Exchange Commission on November 12, 2021.   1     Item 9.01. Financial Statements and Exhibits.   (d) Exhibits .   Exhibit     Number   Description 1.1   Underwriting Agreement, dated February 28, 2024, among Omnicom Finance Holdings plc, Omnicom Group Inc., Barclays Bank PLC, BNP Paribas, HSBC Bank plc and J.P. Morgan Securities plc, as representatives of the several underwriters, and the other underwriters named therein       104   The cover page from this Current Report on Form 8-K, formatted in Inline XBRL   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   Name: Philip J. Angelastro   Title: Executive Vice President and Chief     Financial Officer       Date:  February 29, 2024       3