Sterling Results Presentation Deck

Q4 2021 Financial Highlights Revenue Chart in $ millions 16 128.5 +35.1%¹ 173.6 Q4 20 Q4 21 +32.3% organic constant currency revenue growth² driven by robust base growth, up-sell/cross-sell, new client wins, and client retention Adjusted EBITDA and Margin² Chart in $ millions Adj. EBITDA Margin $27.9 21.7% +57.9% +370 bps $44.0 25.4% Q4 20 Q4 21 370 bps of margin expansion driven by strong revenue growth, operating leverage, and cost controls 1. Includes +32.3% organic constant currency revenue growth, +0.5% due to the impact of fluctuations in foreign exchange currency rates, and +2.3% due to inorganic revenue growth. 2. See appendix for a reconciliation GAAP to Non-GAAP measures Adjusted Earnings Per Share² $0.10 +130.0% $0.23 Q4 20 Q4 21 +130.0% EPS growth driven by strong revenue growth, improved operating leverage, and modest improvement in D&A Sterling

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