Ixonos - Major shareholder announcements

ANNOUNCEMENT UNDER THE SECURITIES MARKET ACT, CHAPTER 2, SECTION 10

IXONOS PLC STOCK EXCHANGE RELEASE 21.5.2007                                     

ANNOUNCEMENT UNDER THE SECURITIES MARKET ACT, CHAPTER 2, SECTION 10             

We hereby announce that Ixonos Plc has been notified, in accordance with Chapter
2, Section 10 of the Finnish Securities Market Act, of a change in the company's
ownership:                                                                      

Osuuspankkikeskus Osk (”OPK”) has on May 18, 2007 informed Ixonos that ownership
share of Ixonos Plc's votes and share capital by investment fund of OPK's       
subsidiaries has increased over onetwentieth (1/20).                            

Altogether OPK and the entities OPK has control to own 400,000 shares of Ixonos,
corresponding to 5,39 % of Ixonos' shares and votes.                            

The share capital of Ixonos Plc comprises in total EUR 296,948 and 7,423,700    
shares.                                                                         

IXONOS PLC                                                                      
Kari Happonen                                                                   
President and CEO                                                               


ADDITIONAL INFORMATION:                                                         
Ixonos Plc                                                                      
CFO Petteri Mussalo, puh. +358 424 2231, GSM +358 400                           
193 779                                                                         
petteri.mussalo@ixonos.com                                                      

DISTRIBUTION:                                                                   
Helsinki Stock Exchange                                                         
Main Media