Tekla Corporation applies for the delisting of its shares 

Tekla Corporation          Stock exchange release      November 29, 2011                           at 9:00 a.m.

Tekla Corporation applies for the delisting of its shares

Trimble Finland Oy ("Trimble Finland") has on November 25, 2011 filed its statement of claim in the arbitration proceedings concerning the redemption of minority shares in Tekla Corporation ("Tekla"), which Trimble Finland has initiated in accordance with chapter 18 of the Companies Act. According to chapter 18, section 6 of the Companies Act, if the Arbitral Tribunal considers the existence of the redemption right to be clear, the minority shares subject to the proceedings are immediately transferred to Trimble Finland upon the posting of a security for the payment of the redemption price in the form approved by the Arbitral Tribunal.

Tekla's Board of Directors has resolved to apply for the termination of public trading in the Tekla share and the delisting of the share. Tekla has filed an application concerning the matter with the Listing Committee of NASDAQ OMX Helsinki. In the application, Tekla requests that the Tekla share be delisted from the official list of NASDAQ OMX Helsinki as soon as possible once the title to the shares subject to the redemption proceedings has been transferred to Trimble Finland in accordance with chapter 18, section 6 of the Companies Act.

TEKLA CORPORATION

Board of Directors

Additional information: Timo Keinänen, CFO, tel. +358 400 813 027, firstname.lastname @ tekla.com

Distribution: NASDAQ OMX Helsinki Ltd, main media andwww.tekla.com

Tekla Corporationdrives the evolution of digital information models with its software, providing a growing competitive advantage to customers in the construction, infrastructure and energy industries. Tekla's net sales for 2010 were nearly 58 million euros and operating result nearly 10 million euros. International operations accounted for approximately 80% of net sales. Tekla has customers in 100 countries, offices in 15 countries and a worldwide partner network. Tekla Group currently employs more than 500 persons, of whom about 200 work outside of the headquarters in Finland. Tekla was established in 1966, and is one of the longest-operating Finnish software companies. Tekla Corporation became part of Trimble in July 2011.