13D Filing: Marcato Capital Management and Deckers Outdoor Corp (DECK)

This amendment No. 5 to Schedule 13D (this Amendment No. 5), amends and supplements the Schedule 13D filed on
February 8, 2017 (the Initial 13D and, as amended and supplemented through the date of this Amendment No. 5, collectively, the Schedule 13D) by the Reporting Persons, relating to the common stock, par value $0.01
per share (the Shares), of Deckers Outdoor Corporation, a Delaware corporation (the Issuer). Capitalized terms not defined in this Amendment No. 5 shall have the meaning ascribed to them in the Schedule 13D.

The information set forth in response to each separate Item below shall be deemed to be a response to all Items where such information is
relevant.

Item 4 of the Schedule 13D is hereby supplementally amended as
follows:

On October 24, 2017, the Issuer announced the resignation of Angel Martinez from the Board and amended and restated the
Bylaws to decrease the authorized number of directors on the Board from ten (10) to nine (9). The Issuer further announced that the Board fixed the size of the Board at nine (9) directors, which represents a reduction from the previous ten
(10) director Board. In light of these changes, Marcato has elected to reduce the size of its slate from ten (10) nominees to nine (9) nominees. Accordingly, on October 31, 2017, Marcato International submitted to the Issuer an
update and supplement to the Notice to notify the Issuer of Marcato Internationals withdrawal of Michael W. Rayden as a Nominee. A copy of such update and supplement is filed herewith as Exhibit J and is incorporated herein by reference.