Dropbox Investor Presentation Deck

Non-GAAP reconciliation Gross profit Gross margin Research and development Research and development margin Sales and marketing Sales and marketing margin General and administrative General and administrative margin Income (loss) from operations Operating margin Note: % may not foot due to rounding $ GAAP 1,250.3 75.3% 662.1 39.9 % 423.3 25.5% 245.4 14.8 % (80.5) (4.8%) $ Stock based compensation 15.8 1.0 % (147.6) (8.9%) (31.4) Twelve Months Ended - 2019 (1.9%) (66.4) (4.0%) 261.2 15.7 % Acquisition-related and other expenses $ (14.5) (0.9%) (1.4) (0.1%) 15.9 1.0 % Amortization of acquired intangible $ assets 3.4 $ 0.2 % (5.0) (0.3%) 8.4 0.5% Non-GAAP 1,269.5 76.4% 500.0 30.1 % 386.9 23.3 % 177.6 10.7 % 205.0 12.3 % 37

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