Additional Listing

Embargoed Release: 12:45hrs 31 May 2005                                        

                                  SOPHEON PLC                                  

                          ('Sopheon' or 'the Group')                           

                                ISSUE OF EQUITY                                

Sopheon plc, the international provider of software and services that improve
the financial return from innovation and product development investments, has
today placed 4,347,826 ordinary shares at 23p per share to raise £1 million
(approximately before expenses). Application has been made for the new ordinary
shares to be admitted to trading on AIM and dealings are expected to commence
on 3 June 2005.These funds will increase the Group's cash resources at the end
of May to over £2 million, and will enable Sopheon to take timely advantage of
possible new opportunities for business expansion.

The commercial environment in the second quarter of 2005 is proving similar to
that in which Sopheon ended 2004, with activity levels high, potential deals
accumulating, and a focus on achieving closure on targeted sales by period end.
Meanwhile, the rapid evolution of the product life cycle management (PLM)
market is increasing the range of potential alternatives available to Sopheon
in its development and implementation of strategies for continued growth. This
is underlined by the development of the Group's relationship with Microsoft and
complementary high levels of interest from other partner candidates, in
addition to strong positive market reaction to the recent release of Accolade
Version 6.0. Current or potential opportunities include new applications for
Accolade, entry into new vertical markets, further expansion of sales channels,
technology acquisitions and possible M&A activity. If and when good strategic
opportunities are identified, the board believes that Sopheon must have the
resources to act quickly, in order to optimize its growth prospects and
position itself for market leadership.

Sopheon's Chairman, Barry Mence said:

'With the new release of Accolade and our rapidly evolving strategic
relationships, we believe the time is right to strengthen our ability to act
quickly and independently if the right opportunity arises.'

For further information contact:

Barry Mence, Chairman   Sopheon plc                  Tel : + 44 (0) 1483 685   
                                                     735                       
Arif Karimjee, CFO                                                             
                                                                               
Adam Reynolds           Hansard Communications       Tel : + 44 (0) 207 245    
                                                     1100                      
Andrew Tan                                           + 44 (0) 7957 203 685     
                                                                               
Floor van Maaren        Citigate First Financial     Tel : + 31 (0) 205 754 010

About Sopheon

Sopheon (LSE:SPE) is an international provider of software and services that
help organizations improve the business impact of product development. The
Sopheon Accolade® product development system automates gate- or phase-based
product development (PD) processes and provides strategic decision support that
allows companies to improve innovation, cut product development spending waste
and shorten time to market. Sopheon is listed on the AIM market of the London
Stock Exchange and on the Euronext in the Netherlands. For more information,
please visit www.sopheon.com.