Tekla Corporation   Stock Exchange Release    February 10, 2012 at 2.30 p.m.

Trimble Finland Has Acquired Title to All Shares in Tekla Corporation

According to information Tekla Corporation ("Tekla") has received today, Trimble Finland Oy ("Trimble Finland") has posted the required security in connection with the redemption of the minority shares in Tekla. Trimble Finland has thus acquired title to all the outstanding shares in Tekla in accordance with the Companies Act. As a consequence of the posting of the security, the minority shareholders of Tekla are entitled only to the redemption price and to the interest accruing thereon.

NASDAQ OMX Helsinki Ltd has upon the request of Tekla resolved to delist Tekla's share from the Helsinki Stock Exchange upon the title to all the shares in Tekla having been transferred to Trimble Finland. The listing of Tekla's share on the Helsinki Stock Exchange shall thus end today, as stated in a separate release to be published by NASDAQ OMX Helsinki Ltd.

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 and www.tekla.com

Tekla Corporation drives 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. www.tekla.com