Notification of a change in shareholding according to Securities Markets Act 2:10

Tekla Corporation       Stock Exchange Announcement   21.3.2007


Notification of a change in shareholding according to Securities
Markets Act 2:10


Tekla Corporation has received the following notification on March
19, 2007: Fidelity International Ltd's and its direct and indirect
subsidiaries' holdings in Tekla Corporation have crossed below the 5%
threshold. The holdings of Fidelity International Limited and its
subsidiaries are divided as follows:



Name of the Fund  Amount of shares      Proportion of share capital
                                        and voting rights
FIJ IT EURO SMLLR               100,740                         0.45%
COS OPN MTHR
FID FDS - EURO                  822,274                         3.64%
SMALLER CO POOL
Total                           923,014                         4.09%



According to their previous notification of October 19, 2006, the
holdings were
9.78%.


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


Tekla Corporation


Ari Kohonen, president and CEO
phone +358 30 661 1468
ari.kohonen(at)tekla.com


Distribution:     Helsinki Exchanges, main media



Tekla Corporation in Brief

Tekla is the industry-leading international software company whose
innovative software solutions make customers' core business more
effective in building and construction, energy distribution and in
municipalities. The company's model-based software products and
related services are used in more than 80 countries. Tekla Group's
net sales for 2006 were approximately 50 million euros and operating
result 13.6 million euros. International operations accounted for 75%
of net sales. Tekla Group employs more than 350 persons, of whom a
third work outside Finland. Tekla was established in 1966, making it
one of the oldest software companies in Finland. For additional
information on Tekla, please visit www.tekla.com