X0306 4 2018-03-27 0 0001467623 DROPBOX, INC. DBX 0001214607 MYLOD ROBERT J JR 333 BRANNAN STREET SAN FRANCISCO CA 94107 1 0 0 0 Class A Common Stock 2018-03-27 4 C 0 122698 0.00 A 122698 I See footnote Class A Common Stock 14286 D Series A-1 Preferred Stock 2018-03-27 4 C 0 14884 0.00 D Class B Common Stock 14884 0 I See footnote Class B Common Stock 2018-03-27 4 C 0 14884 0.00 A Class A Common Stock 14884 122698 I See footnote Class B Common Stock 2018-03-27 4 C 0 122698 0.00 D Class A Common Stock 122698 0 I See footnote 122,698 shares of Class B Common Stock were converted into 122,698 shares of Class A Common Stock at the election of the Reporting Person and had no expiration date. Shares are held by Annox Capital, LLC ("Annox"). The Reporting Person is the managing member of Annox and has sole voting and investment control over the shares held by Annox. These securities are restricted stock units. Each restricted stock unit represents the Reporting Person's right to receive one share of Class A Common Stock, subject to the applicable vesting schedule through the earlier of May 15, 2019 or the date of the Issuer's next annual meeting of stockholders. In the event the Reporting Person ceases to be a Service Provider, the unvested restricted stock units will be cancelled by the Issuer. The Series A-1 Preferred Stock automatically converted into shares of Issuer's Class B Common Stock on a one-for-one basis immediately prior to the closing of the Issuer's initial public offering of Class A Common Stock and had no expiration date. Total reflects an adjustment of 40 shares which were inadvertently underreported in the Reporting Person's Form 3 filed on March 22, 2018. The Issuer's Class B Common Stock is convertible into the Issuer's Class A Common Stock on a one-for-one basis at the Reporting Person's election and has no expiration date. /s/ Bart E. Volkmer, Attorney-In-Fact 2018-03-29