Tekla - Major shareholder announcements

Notification of a change in shareholding according to Securities Markets Act 2:9

Tekla Corporation                 Stock exchange release      May 27, 2011
                                         at 4:45 p.m.



Notification of a change in shareholding according to Securities Markets Act 2:9

According to the Securities Markets Act, Tekla Corporation has today received
the following notification from   Trimble Navigation Limited and its subsidiary
Trimble Finland Oy:

Grounds for the notification are acquisition of shares or voting rights. 30
percent threshold was exceeded on May 26, 2011. According to the notification
the indirect number of shares is 9,059,493 (40.28%).

Trimble Navigation Ltd. announced on May 9, 2011 a public tender offer, to be
made by its subsidiary Trimble Finland Oy, for all issued and outstanding shares
in Tekla Corporation. The offer period for the tender offer commenced on May
19, 2011 and expires tentatively on June 17, 2011.

Gerako Oy, holding approximately 38 percent of the shares and votes in Tekla,
has accepted the public tender offer for all of its shares in Tekla Corporation.

The stock of Tekla Corporation comprises a total of 22,586,200 shares.



Tekla Corporation



Timo Keinänen, CFO
phone  358 400 813 027,
firstname.lastname@tekla.com





Distribution: NASDAQ OMX Helsinki Ltd, main media





Tekla Corporation

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 almost 100 countries, offices in 15 countries and a worldwide
partner network. Tekla Group currently employs approximately 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. www.tekla.com


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