Stonesoft - Company Announcement

EXPIRY OF STONESOFT'S YEAR 2004 OPTION PLAN

STONESOFT CORPORATION STOCK EXCHANGE ANNOUNCEMENT 27 DECEMBER 2010 AT 3:30 P.M.

Stonesoft Corporation's year 2004 Option Plan subscription period of shares will
expire December 31, 2010 for all the stock options.

www.stonesoft.com/en/investor_relations/shares/option_plans/
option_plan_2004.html

Stonesoft Corporation
Ilkka Hiidenheimo
CEO

More information:
Ilkka Hiidenheimo, CEO
Tel. +358(0)9 476 711
Email: ilkka.hiidenheimo@stonesoft.com

Distribution:
NASDAQ OMX Helsinki Ltd
www.stonesoft.com



[HUG#1475698]