Public tender offer of Trimble Finland Oy for all the shares of Tekla Corporation will commence on 19 May 2011

Trimble Navigation Limited ("Trimble") announced on 9 May 2011 a public tender offer, to be made by its subsidiary Trimble Finland Oy ("The Offeror" or "Trimble Finland"), for all issued and outstanding shares in Tekla Corporation ("Tekla" or "The Company") which are not owned by Tekla or its subsidiaries. Represented by its conflict-free members, the board of directors of Tekla unanimously recommends that the shareholders of Tekla accept the Tender Offer. The board recommendation is annexed to this release.