Sterling Results Presentation Deck

Track Record of Adjusted EBITDA Growth 19 Chart in $ millions Year-over-year Adjusted EBITDA growth Average (Q1 20 to Q4 21) $27.6 23.1% Q1 20 +14.9% 1. See appendix for a reconciliation of GAAP to Non-GAAP measures $13.9 15.7% Q2 20 (60.6%) $30.4 25.9% Q3 20 (15.3%) $27.9 21.7% Q4 20 +17.5% 44.3% $36.8 26.4% Q1 21 +33.4% $47.0 29.5% Q2 21 +237.4% Adj. EBITDA¹ $51.3 30.3% Q3 21 +68.8% Adj. EBITDA Margin %¹ $44.0 25.4% Q4 21 +57.9% Sterling

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