Talvivaara: Flagging notification in accordance with Chapter 9 Section 5 of the Finnish Securities Market Act

Stock Exchange Release Talvivaara Mining Company Plc. 14 February 2013 Flagging notification in accordance with Chapter 9 Section 5 of the Finnish Securities Market Act Talvivaara Mining Company Plc ("Talvivaara") has on 14 February 2013 received the attached flagging notification in accordance with Chapter 9 Section 5 of the Finnish Securities Market Act from Solidium Oy regarding the shares of Talvivaara. Solidium Oy has in connection with the share issue of Talvivaara announced on 14 February 2013 committed to subscribe in full for new shares on the basis of the subscription rights allocated to it. In addition, Solidium Oy has agreed to subscribe for shares in the secondary subscription up to an aggregate subscription price of EUR 30 million. Solidium Oy's maximum holding following the share issue will be determined in accordance with the terms of the rights issue. The maximum holding of the shares is based on the estimates given by the underwriting banks. If the above mentioned arrangements are completed, the holdings of Solidium Oy will increase to a maximum of 18.1 % of shares and voting rights (above 10 % & 15 %). Attachment: 1. Name of the target company Talvivaara Mining Company Plc 2. Basis for the flagging obligation An arrangement which may result in the acquisition or disposal of shares or voting rights 3. Date transaction 14 February 2013 4. Number of the shares and voting rights preceding the triggering transaction 24,210,053 shares and voting rights Amount of the shares and voting rightsthat may be acquired if the arrangement is completed: Maximum 18.1 % 5. Name of shareholder and business identification code Solidium Oy, Business ID 2245475-9 Enquiries Talvivaara Mining Company Plc. Tel: +358 20 7129 800 Saila Miettinen-Lähde, Deputy CEO and Chief Financial Officer Pekka Erkinheimo, Chief Commercial Officer Talvivaara Mining Company Plc Talvivaara Mining Company is an internationally significant base metals producer with its primary focus on nickel and zinc using a technology known as bioheapleaching to extract metals out of ore. Bioheapleaching makes extraction of metals from low grade ore economically viable. The Talvivaara deposits comprise one of the largest known sulphide nickel resources in Europe. The ore body is estimated to support anticipated production for several decades. Talvivaara has secured a 10-year off-take agreement for 100 per cent of its main output of nickel and cobalt to Norilsk Nickel and entered into a long-term zinc streaming agreement with Nyrstar NV. Talvivaara is listed on the London Stock Exchange Main Market and NASDAQ OMX Helsinki. Further information can be found at www.talvivaara.com. Talvivaara - Holdings in Company 14.2.2013: http://hugin.info/136227/R/1678365/547762.pdf 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: Talvivaaran Kaivososakeyhtiö Oyj via Thomson Reuters ONE [HUG#1678365]