SPE.L Regulatory News (SPE)

TR-1: NOTIFICATION OF MAJOR INTEREST IN SHARESi

1. Identity of the issuer or the underlying issuerof existing shares to which voting rights areattached: ii

Sopheon Plc

2 Reason for the notification (please tick the appropriate box or boxes):

An acquisition or disposal of voting rights

x

An acquisition or disposal of qualifying financial instruments which may result in the acquisition of shares already issued to which voting rights are attached

An acquisition or disposal of instruments with similar economic effect to qualifying financial instruments

An event changing the breakdown of voting rights

Other (please specify):

3. Full name of person(s) subject to thenotification obligation: iii

Myrtledare Corp

Rivomore Limited

(related family holdings)

4. Full name of shareholder(s)  (if different from 3.):iv

Rock (Nominees) Limited

Euroclear 90998

Nederlands Centraal Instituut voor Giraal Effectenverkeer

5. Date of the transaction and date onwhich the threshold is crossed orreached: v

10 September 2013

6. Date on which issuer notified:

11 September 2013

7. Threshold(s) that is/are crossed orreached: vi, vii

19%

8. Notified details:

A: Voting rights attached to shares viii, ix

Class/type ofshares

GB00B8L2X129

Situation previousto the triggeringtransaction

Resulting situation after the triggering transaction

NumberofShares

NumberofVotingRights

Numberof shares

Number of votingrights

% of voting rights x

Direct

Direct xi

Indirect xii

Direct

Indirect

Rivomore Limited

693,000

625,500

693,000

625,500

693,000

715,500

693,000

715,500

9.521%

9.830%

Myrtledare Corp

B: Qualifying Financial Instruments

Resulting situation after the triggering transaction

Type of financialinstrument

Expirationdate xiii

Exercise/Conversion Period xiv

Number of votingrights that may beacquired if theinstrument isexercised/ converted.

% of votingrights

C: Financial Instruments with similar economic effect to Qualifying Financial Instruments xv, xvi

Resulting situation after the triggering transaction

Type of financialinstrument

Exercise price

Expiration date xvii

Exercise/Conversion period xviii

Number of voting rights instrument refers to

% of voting rights xix, xx

Convertible Loan Stock

£1

31 January 2015

Until 31 January 2015

640,000

Nominal

Delta

8.082%

6.517%

Total (A+B+C)

Number of voting rights

Percentage of voting rights

2,048,500

25.868%

9. Chain of controlled undertakings through which the voting rights and/or thefinancial instruments are effectively held, if applicable: xxi

Proxy Voting:

10. Name of the proxy holder:

11. Number of voting rights proxy holder will ceaseto hold:

12. Date on which proxy holder will cease to holdvoting rights:

13. Additional information:

14. Contact name:

Alison Callister

15. Contact telephone number:

+44 1624 640666