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 997.0 71.6 % 768.2 55.2% 439.6 31.6% 283.2 20.3 % (494.0) (35.5)% $ Twelve Months Ended - 2018 Stock based compensation 47.0 3.4 % (368.2) (26.5)% (94.3) (6.7)% (140.6) (10.0)% 650.1 46.7 % Employer payroll related to the release of two-tier RSUS $ 1.1 $ 0.1 % (8.3) (0.6%) (2.2) (0.2)% (2.3) (0.2%) 13.9 1.0 % Non-GAAP 1,045.1 75.1 % 391.7 28.1 % 343.1 24.7 % 140.3 10.1 % 170.0 12.2 % 41

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