Electro Optic Systems Holdings Limited

A.C.N. 092 708 364

Suite 2, Level 12, 75 Elizabeth Street, Sydney NSW 2000

Tel +61 2 9233 3915 Fax +61 2 9232 3411

http://www.eos-aus.com

1 June 2011

The Manager

Company Announcements Office Australian Stock Exchange Limited Exchange Centre

20 Bridge Street

Sydney NSW 2000

Dear Sirs,

Expiry of Unlisted Options

Electro Optic Systems Holdings Limited (ASX:EOS) reports the expiry of 1,684,800 unlisted options over ordinary shares in the Company to employees and directors.

The details of the expired options are as follows:

ASX Code Number of Options Exercise Price Expiry Date

EOSAW 1,684,800 $1.95 31 May 2011

Yours faithfully,

Ian Dennis

Director

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