BIOTIE THERAPIES CORP. STOCK EXCHANGE RELEASE 11 May 2007 Pursuant to the convertible capital loan been determined by Biotie Therapies Corp. on 25 March 2004, the total of 180,000 new shares has been subscribed for. The new shares have been entered in the Finnish Trade Register on 11 May 2007. Following the increase, the total number of shares in Biotie Therapies Corp. is 90,211,860. The loan capital converted in connection with the subscription amounts to EUR 336,375.85. The share capital has not been increased. The subscribed shares entitle their holders to dividend as of the financial year 2007 and to other shareholder rights as of the registration. The new shares shall be subject to public trading on the official list of the Helsinki Stock Exchange together with the old shares on or about 14 May 2007. The subscription period for the shares pursuant to the company's convertible loans determined on 25 March 2004 commenced when the convertible loans had been registered with the Finnish Trade Register and it will end on 31 December 2005 or when the loan capital has been paid back in full. So far, a total of 450,000 new shares have been subscribed pursuant to the convertible loans determined by the company on 25 March 2004. Turku, 11 May 2007 Biotie Therapies Corp. Timo Veromaa President and CEO For further information, please contact: Timo Veromaa, President and CEO, Biotie Therapies Corp. tel. +358 2 274 8901, e-mail: timo.veromaa@biotie.com www.biotie.com DISTRIBUTION Helsinki Stock Exchange Main Media