First Quarter 2023 Earnings Conference Call

Operating Expenses % of Revenue Before Billable Expenses Three Months Ended March 31 72.5% 2023 2.1% Salaries & Related 2023 Depreciation & Amortization 70.2% (1) Excludes amortization of acquired intangibles. 2022 2.0% 2022 (1) Office & Other Direct 15.2% 2023 1.0% 14.5% Amortization of Acquired Intangibles 2023 2022 1.0% 2022 Selling, General & Administrative 0.6% 2023 0.1% 2023 0.9% Restructuring Charges Interpublic Group of Companies, Inc. 2022 0.3% 2022 6 IPG

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