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

This amendment No. 3 to Schedule 13D (this Amendment No. 3), 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. 3, 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. 3 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 3 of the Schedule 13D is
hereby supplementally amended as follows:

The net investment costs (including commissions, if any) of the Shares and the options on
Shares directly owned by the Marcato Funds is approximately $153,872,016.97. The amounts paid were funded by the respective working capital of the Marcato Funds.

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

On October 16, 2017, Marcato executed same-day settlement of the shares of common stock referenced in Exhibit H. Marcato
will be entitled to vote such shares at the 2017 Annual Meeting.