Tekla - Major shareholder announcements

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

Tekla Corporation                 Stock exchange release      May 9, 2011
                                         7:00 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 on an agreement which, if executed in due course
leads to a change in holdings of the company:

Trimble Navigation Ltd. today on 9 May 2011 announced a public tender offer, to
be made by its subsidiary Trimble Finland Oy, for all issued and outstanding
shares in Tekla Corporation.

Gerako Oy, holding 8,569,020 or 38.06 percent of shares and votes in Tekla, has
given an irrevocable and unconditional undertaking to accept the tender offer.

If the tender offer is excecuted, the holdings of Gerako will decrease below
1/20 of all Tekla shares and votes. In that case Gerako's holding would be,
based on the above mentioned undertaking, 0 shares, corresponding to 0.0 percent
of shares and votes in Tekla

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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