Notification of change in holdings under the Finnish Securities Market Act

1 september 2010 CITYCON OYJ    Stock Exchange Announcement    1 September 2010 at 11.35 hrs According to a notice received by Citycon Oyj on 31 August 2010, ING Clarion Real Estate Securities, LLC's (f/k/a ING Clarion Real Estate Securities, L.P.) ("ING CRES") holding in the company has fallen below the threshold of 5 per cent on 18 August 2008. As additional information to the notice ING CRES announces that "this notice is provided to remedy a missed filing that should have been made in August 2008. As of 30 August 2010, ING CRES holds 1,344,574 (0.60%) shares of Citycon and has voting authority over 1,235,780 (0.56%) shares. ING CRES holds such shares and voting authority in its capacity as investment manager for various institutional investors." Otherwise the notice includes the following information: Identity of the issuer of shares: Citycon Oyj Reason for the notification: an acquisition or disposal of shares or voting rights Full name of person(s) subject to the notification obligation: ING Clarion Real Estate Securities, LLC (f/k/a ING Clarion Real Estate Securities, L.P.) ("ING CRES") Date of the transaction and date on which the threshold is exceeded, fallen below of or reached: 18 August 2008 Threshold that is exceeded, fallen below of or reached: 1/20 (5 percent) Notified details of shares and voting rights attached to them: Situation previous to the triggering transaction Number of shares Number of voting rights 12,072,417 7,144,467 Resulting situation after the triggering transaction Number of shares % of shares Number of voting rights % of voting rights Direct Direct Direct Direct 10,752,441 4.87% 6,578,167 2.98% Done at Radnor, Pennsylvania USA on 31 August 2010 Identity of the person or legal entity subject to the notification obligation: ING Clarion Real Estate Securities, LLC (SEC Reg. No. 801-49083) 201 King of Prussia Road, Suite 600 Radnor, Pennsylvania 19087 USA +1 (610) 995-2500 William Zitelli, General Counsel Helsinki, 1 September 2010 CITYCON OYJ Petri Olkinuora CEO For further information, please contact: Eero Sihvonen, Executive Vice President, CFO Tel +358 20 766 4459 or +358 50 557 9137 eero.sihvonen@citycon.fi Distribution: NASDAQ OMX Helsinki Major media www.citycon.com [HUG#1441898] This announcement is distributed by Thomson Reuters on behalf of Thomson Reuters clients. The owner of this announcement warrants that: (i) the releases contained herein are protected by copyright and other applicable laws; and (ii) they are solely responsible for the content, accuracy and originality of the information contained therein. Source: Citycon Oyj via Thomson Reuters ONE