2/24/2018 S-1 Table of Contents DROPBOX, INC. CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY (In millions) Accumulated Convertible Additional other Total preferred stock Common stock paid­in Accumulated comprehensive stockholders’ Shares Amount Shares Amount capital deficit income (loss) equity Balance at December 31, 2014 221.4 $ 615.3 281.2 $ — $ 192.3 $ (399.7) $ 0.2 $ 408.1 Cumulative­effect adjustment from adoption of Topic 606 — — — — — (1.7) — (1.7) Vesting of early exercised stock options — — — — 2.2 — — 2.2 Issuance of common stock, options and awards related to acquisitions — — 1.1 — 35.2 — — 35.2 Exercise of stock options and awards — — 0.6 — 2.8 — — 2.8 Repurchase of unvested common stock (related to early exercised stock options) — — (1.8) — (1.3) — — (1.3) Stock­based compensation — — — — 66.1 — — 66.1 Other comprehensive income — — — — — — 0.1 0.1 Net loss — — — — — (325.9) — (325.9) Balance at December 31, 2015 221.4 615.3 281.1 — 297.3 (727.3) 0.3 185.6 Vesting of early exercised stock options — — — — 0.5 — — 0.5 Issuance of common stock, options and awards related to acquisitions — — 0.1 — 0.7 — — 0.7 Repurchase of unvested common stock (related to early exercised stock options) — — (0.4) — (0.1) — — (0.1) Stock­based compensation — — — — 147.6 — — 147.6 Other comprehensive loss — — — — — — (1.3) (1.3) Net loss — — — — — (210.2) — (210.2) Balance at December 31, 2016 221.4 615.3 280.8 — 446.0 (937.5) (1.0) 122.8 Cumulative­effect adjustment from adoption of ASU 2016­09 — — — — 0.5 (0.5) — — Release of restricted stock units — — 21.9 — — — — — Shares repurchased for tax withholdings on release of restricted stock — — (8.2) — (87.9) — — (87.9) Donation of common stock to charitable foundation — — 0.9 — 9.4 — — 9.4 Exercise of stock options and awards — — 0.2 — 0.5 — — 0.5 Repurchase of unvested common stock (related to early exercised stock options) — — (0.3) — — — — — Stock­based compensation — — — — 164.6 — — 164.6 Other comprehensive income — — — — — — 5.2 5.2 Net loss — — — — — (111.7) — (111.7) Balance at December 31, 2017 221.4 $ 615.3 295.3 $ — $ 533.1 $ (1,049.7) $ 4.2 $ 102.9 See accompanying Notes to Consolidated Financial Statements. F­6 https://www.sec.gov/Archives/edgar/data/1467623/000119312518055809/d451946ds1.htm 196/235