Omnicom Group Inc.

OMNICOM GROUP INC. ANNUAL REPORT ON FORM 10-K FOR THE YEAR ENDED DECEMBER 31, 2025 TABLE OF CONTENTS Page PART I Item 1. Business 1 Item 1A. Risk Factors 4 Item 1B. Unresolved Staff Comments 11 Item 1C. Cybersecurity 11 Item 2. Properties 12 Item 3. Legal Proceedings 12 Item 4. Mine Safety Disclosures 12 PART II Item 5. Market for Registrant's Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities 12 Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations 13 Item 7A. Quantitative and Qualitative Disclosures About Market Risk 33 Item 8. Financial Statements and Supplementary Data 35 Item 9. Changes in and Disagreements With Accountants on Accounting and Financial Disclosure 35 Item 9A. Controls and Procedures 35 Item 9B. Other Information 35 Item 9C. Disclosure Regarding Foreign Jurisdictions that Prevent Inspections 35 PART III Item 10. Directors, Executive Officers and Corporate Governance 35 Item 11. Executive Compensation 36 Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters 36 Item 13. Certain Relationships and Related Transactions, and Director Independence 36 Item 14. Principal Accountant Fees and Services 36 PART IV Item 15. Exhibit s and Financial Statement Schedules 36 Item 16. Form 10-K Summary 39