Sotheby’s (BID) Stock: Marcato Capital Agrees To Sell 2.05 Million Shares Back to Auctioneer

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Page 9 of 9 – SEC Filing

SIGNATURES

After reasonable inquiry and to the best of my knowledge and belief, the undersigned certifies that the information set forth in this statement is true,
complete and correct.

Date: October 4, 2016

MARCATO CAPITAL MANAGEMENT LP
By: Marcato Holdings LLC
By: /s/ Richard T. McGuire III
Richard T. McGuire III
Authorized Person

Date: October 4, 2016

RICHARD T. MCGUIRE III
By: /s/ Richard T. McGuire III

Date: October 4, 2016

MARCATO, L.P.
By: MCM General Partner LLC, its General Partner
By: /s/ Richard T. McGuire III
Richard T. McGuire III
Authorized Person

Date: October 4, 2016

MARCATO II, L.P.
By: MCM General Partner LLC, its General Partner
By: /s/ Richard T. McGuire III
Richard T. McGuire III
Authorized Person

Date: October 4, 2016

MARCATO INTERNATIONAL MASTER FUND, LTD.
By: /s/ Richard T. McGuire III
Richard T. McGuire III
Director

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