NOTICE PURSUANT TO THE SECURITIES MARKET ACT, CHAPTER 2, SECTION 10: CHANGE OF THE OWNERSHIP IN STONESOFT CORPORATION


STONESOFT CORPORATION STOCK EXCHANGE ANNOUNCEMENT     

NOTICE PURSUANT TO THE SECURITIES MARKET ACT, CHAPTER 2, SECTION 10: CHANGE OF  
THE OWNERSHIP IN STONESOFT CORPORATION                                          

Pursuant the Finnish Securities Market Act (Section 2:9), Stonesoft Corporation 
has been notified of a change in a shareholding in the company.                 

The number of shares owned by Umo Capital-group in Stonesoft Corporation has    
increased, as from March 13, 2007 to 2.876.900 representing 5,02% of the share  
capital and voting rights. The division of ownership of Umo Capital-group is    
currently as follows:                                                           
                                                                              
Umo Capital Oy, Company ID 0115056-1, number of shares: 317.000, representing   
0.55% of the share capital and voting rights.                                   

Ulkomarkkinat Oy, Company ID 0115507-1, number of shares: 2.499.900,            
representing 4.36% of the share capital and voting rights                       

Balance Capital Oy: Company ID 1605452-1, number of shares: 60.000, representing
0.10% of the share capital and voting rights                                    
                                                                                
Stonesoft Corporation´s share capital comprises a total of 57.302.732 shares,   
which convey a total of 57.302.732 votes.                                       


Stonesoft Corporation                                                           
Ilkka Hiidenheimo                                                               
President and CEO                                                               

                                                                                
Further information Mikael Nyberg, CFO, Stonesoft Corporation, tel. 4767 11.    
                                                                                
Distribution  Helsinki Stock Exchange                                        
	     Main Media                                                              
	     www.stonesoft.com