GAAP to non-GAAP reconciliation Reconciliation of non-GAAP 昀椀nancial measures In millions, except percentages Q1’21 Q2’21 Q3’21 Q4’21 Q1’22 Q2’22 Q3’22 Q4’22 Q1’23 Q2’23 Q3’23 Q4’23 Gross pro昀椀t (GAAP) $122.9 $127.8 $140.4 $163.3 $177.0 $219.0 $267.9 $310.7 $177.0 $219.0 $267.9 $310.7 Stock-based compensation 1.0 1.1 2.9 2.4 2.5 3.1 3.2 4.3 2.5 3.1 3.2 4.3 Acquisition related amortization - - - 0.2 1.3 1.5 1.4 2.1 1.3 1.5 1.4 2.1 Gross pro昀椀t (Non-GAAP) $123.9 $128.9 $143.3 $165.9 $180.8 $223.6 $272.5 $317.1 $180.8 $223.6 $272.5 $317.1 Gross margin (GAAP) 40.7% 40.4% 39.9% 39.6% 40.1% 41.3% 42.2% 42.9% 40.1% 41.3% 42.2% 42.9% Stock-based compensation 0.4% 0.4% 0.9% 0.6% 0.6% 0.6% 0.5% 0.6% 0.6% 0.6% 0.5% 0.6% Acquisition related amortization -% -% -% -% 0.3% 0.3% 0.2% 0.3% 0.3% 0.3% 0.2% 0.3% Gross margin (Non-GAAP) 41.1% 40.8% 40.8% 40.2% 41.0% 42.2% 42.9% 43.8% 41.0% 42.2% 42.9% 43.8% Operating expenses (GAAP) $61.6 $68.4 $103.0 $105.6 $115.2 $125.0 $132.5 $153.7 $115.2 $125.0 $132.5 $153.7 Stock-based compensation (13.9) (14.3) (44.1) (34.8) (45.3) (49.9) (49.1) (59.4) (45.3) (49.9) (49.1) (59.4) Acquisition related expenses and amortization (4.0) (2.5) (1.6) (2.7) (3.6) (3.9) (4.2) (4.8) (3.6) (3.9) (4.2) (4.8) Restructuring and asset impairment charges - - - - - - (0.6) (1.8) - - (0.6) (1.8) Operating expenses (Non-GAAP) $43.7 $51.6 $57.3 $68.1 $66.3 $71.2 $78.6 $87.7 $66.3 $71.2 $78.6 $87.7 % of Revenue (Non-GAAP) 14.5% 16.4% 16.3% 16.5% 15.0% 13.4% 12.4% 12.1% 15.0% 13.4% 12.4% 12.1% Income (loss) from operations (GAAP) $61.4 $59.4 $37.4 $57.7 $61.8 $94.0 $135.4 $157.0 $61.8 $94.0 $135.4 $157.0 Stock-based compensation 14.8 15.3 46.9 37.1 47.8 53.1 52.3 63.6 47.8 53.1 52.3 63.6 Acquisition related expenses and amortization 4.0 2.5 1.6 2.9 4.9 5.3 5.6 7 4.9 5.3 5.6 7 Restructuring and asset impairment charges - - - - - - 0.6 1.8 - - 0.6 1.8 Income from operations (Non-GAAP) $80.2 $77.2 $85.9 $97.7 $114.5 $152.4 $193.9 $229.4 $114.5 $152.4 $193.9 $229.4 % of Revenue (Non-GAAP) 26.6% 24.4% 24.4% 23.7% 26.0% 28.7% 30.6% 31.7% 26.0% 28.7% 30.6% 31.7% 98