Other Information
−Removed: During the quarter ended September 30, 2025, none of the Company’s directors or officers adopted, modified, or terminated a Rule 10b5-1 trading arrangement, or a non-Rule 10b5-1 trading arrangement, in each case as defined in Item 408 of Regulation S-K.
+Added: During the quarter ended March 31, 2026, none of our directors or officers adopted, modified, or terminated a Rule 10b5-1 trading arrangement, or a non-Rule 10b5-1 trading arrangement, in each case as defined in Item 408 of Regulation S-K.
+Added: 4.1 Indenture, dated as of March 2, 2026, between Omnicom Group Inc., as issuer, and Deutsche Bank Trust Company Americas, as trustee (Exhibit 4.1 to our Current Report on Form 8-K (File No.
+Added: 001-10551) filed on March 2, 2026 (the “March 2, 2026 8-K”) and incorporated herein by reference).
+Added: 4.2 First Supplemental Indenture, dated as of March 2, 2026, between Omnicom Group Inc., as issuer, and Deutsche Bank Trust Company Americas, as trustee (Exhibit 4.2 to the March 2, 2026 8-K and incorporated herein by reference).
+Added: 4.3 Second Supplemental Indenture, dated as of March 2, 2026, between Omnicom Finance Holdings plc, as issuer, Omnicom Group Inc., as guarantor, and Deutsche Bank Trust Company Americas, as trustee (Exhibit 4.3 to the March 2, 2026 8-K and incorporated herein by reference).
+Added: 4.4 Form of 4.200% Senior Notes due 2029 ( Exhibit 4.
+Added: 4 to the March 2, 2026 8-K and incorporated herein by reference).
+Added: 4.5 Form of 5.000% Senior Notes due 2033 ( Exhibit 4.
+Added: 5 to the March 2, 2026 8-K and incorporated herein by reference).
+Added: 4.6 Form of 5.300% Senior Notes due 2036 ( Exhibit 4.
+Added: 6 to the March 2, 2026 8-K and incorporated herein by reference).
+Added: 4.7 Form of 3.850% Senior Notes due 2034 ( Exhibit 4.
+Added: 7 to the March 2, 2026 8-K and incorporated herein by reference).
+Added: 10.1 Employment Agreement dated as of November 26, 2025 by and between Omnicom Group Inc.
+Added: and Philippe Krakowsky .
+Added: 10.2 Letter Agreement dated as of November 26, 2025 by and between Omnicom Group Inc.
+Added: and Philippe Krakowsky .
+Added: 10.3 2026 Incentive Award Plan - Restricted Stock Unit Agreement - Form of Grant Notice and Agreement
+Added: 10.4 2026 Incentive Award Plan - Option Agreement - Form of Grant Notice and Agreement
+Added: 10.5 Omnicom 2026 Incentive Award Plan (Annex A to our Definitive Proxy Statement on Schedule 14A (File No.
+Added: 1-10551) filed on December 22, 2025 and incorporated herein by reference).
31.1 Certification of the Chairman and Chief Executive Officer required by Rule 13a-14(a) under the Securities Exchange Act of 1934, as amended.
11 unchanged sentences
OMNICOM GROUP INC.
−Removed: October 22, 2025 /s/ P HILIP J.
+Added: April 29, 2026 /s/ P HILIP J.
Executive Vice President and Chief Financial Officer (Principal Financial Officer and Authorized Signatory)
Compared sentence by sentence after normalising whitespace, quotation marks, case and digits, so re-formatting and restated figures do not read as changed language. Wording changes appear as one removal and one addition. The current filing and the prior one are authoritative.