Third Quarter 2019 Results

2019 Revenue by Discipline Third Quarter CRM Execution & Support 9.3% Advertising CRM Consumer Experience CRM Execution & Support PR Healthcare PR 9.3% CRM Consumer Experience 17.6% OmnicomGroup $ Mix Healthcare 7.9% Advertising 55.9% % Growth 1.8% -0.5% -27.3% % Organic Growth (a) -5.3% 3.4% 1.8% Year to Date -1.5% CRM Execution & Support 9.3% 2,027.2 636.4 337.4 337.2 -3.8% 285.6 8.6% 9.5% 8.1% 8.3% Total $ 3,623.8 -2.4% 2.2% Total $ 10,812.5 -3.5% 2.5% (a) "Organic Growth" reflects the year-over-year increase or decrease in revenue from the prior period, excluding the foreign exchange rate impact, acquisition revenue, net of disposition revenue, as defined on page 9. CRM Consumer Experience 17.6% Advertising CRM Consumer Experience CRM Execution & Support PR Healthcare PR 9.5% $ $ Mix 6,042.4 1,905.2 1,009.6 1,020.6 834.7 Healthcare 7.7% Advertising 55.9% % Growth 1.4% -1.7% -31.2% -4.2% % Organic Growth (a) October 15, 2019 4.3% 1.0% -2.4% -1.9% 10

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