Stonesoft - Company Announcement

Correction to the stock exchange release: NOTIFICATION PURSUANT TO CHAPTER 9, SECTION 10 OF THE FINNISH SECURITIES MARKET ACT

Stonesoft Corporation Stock Exchange Release 6 May 2013 at 15.55 pm

Correction to the stock exchange release: NOTIFICATION PURSUANT TO CHAPTER 9,
SECTION 10 OF THE FINNISH SECURITIES MARKET ACT

The table in chapter 4 in the stock exchange release published today at 2:55 pm
is readjusted below. The correct version of the stock exchange release in full
is as follows:

Stonesoft Corporation has received the following notification on 6 May 2013:

NOTIFICATION OF A CHANGE IN SHAREHOLDING PURSUANT TO CHAPTER 9, SECTION 5 OF THE
FINNISH SECURITIES MARKET ACT

1. Issuer of the shares

Stonesoft Corporation, business identity code 0837548-0.

2. Name of the shareholder subject to notification obligation

Shareholder Mr. Timo Syrjälä.

3. Reason for the notification

McAfee Suomi Funding LLC launched today 6 may 2013 a voluntary public tender
offer ("Tender Offer") for all shares and option rights in Stonesoft
Corporation. Pursuant to the Tender Offer Mr. Timo Syrjälä has irrevocably and
unconditionally undertaken to accept the Tender Offer.

At  the  moment  the  total  number  of  shares and voting rights of Mr. Syrjälä
including  the number of shares and voting  rights of the entities controlled by
him  exceeds 5 per cent (1/20). The acceptance  period under the Tender Offer is
expected  to  commence  on  21 May  2013 and  to run for approximately three (3)
weeks, unless the offer period is extended. Should the Tender Offer be completed
the total number of shares and voting rights of Mr. Syrjälä including the number
of  shares and voting rights of the entities controlled by him will come down to
0 per cent.

4. Mr. Syrjälä's existing shareholding and voting rights including the number of
shares and voting rights controlled by him.

+-------------+----------------+------+-------------+----------+
|Ownership    |Number of Shares|% of  |Number of    |% of total|
|             |                |otal  |voting rights|Number of |
|             |                |number|             |          |
+-------------+----------------+------+-------------+----------+
|Personal     |  894 967       |1,40  |  894 967    |1,40      |
+-------------+----------------+------+-------------+----------+
|Controlled   |                |      |             |          |
|companies:   |                |      |             |          |
|             |                |      |             |          |
+-------------+----------------+------+-------------+----------+
|Ekobrokers Oy|          50 000|0,08  |   50 000    |0,08      |
+-------------+----------------+------+-------------+----------+
|Maijos Oy    |2 500 000       |3,90  |2 500 000    |3,90      |
+-------------+----------------+------+-------------+----------+
|Syrjälä&Co Oy|1 200 000       |1,87  |1 200 000    |1,87      |
+-------------+----------------+------+-------------+----------+
|Yhteensä     |4 644 967       |7,25  |4 644 967    |7,25      |
+-------------+----------------+------+-------------+----------+


5. Mr.  Syrjälä's shareholding and voting rights  including the number of shares
and voting rights controlled by him if the Tender Offer shall be completed

+----------------+--------------------+--------------------+-------------------+
|Number of shares|% of total number of|Number   of   voting|%  of  total number|
|                |shares              |rights              |of voting rights   |
+----------------+--------------------+--------------------+-------------------+
|0               |0                   |0                   |0                  |
+----------------+--------------------+--------------------+-------------------+


The percentages have been calculated in proportion to the total number of shares
registered  at the Trade Register  on 6 May 2013 and the  total number of voting
rights related to them, i.e. 64,090,482 shares and voting rights.


Helsinki, 6 May 2013

ILKKA HIIDENHEIMO


For further information, please contact:
Mikael Nyberg, CFO, Stonesoft Corporation
Tel. +358 9 476 711
E-mail: mikael.nyberg@stonesoft.com


Distribution:
NASDAQ OMX Helsinki Ltd
Main media
www.stonesoft.com



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