Notification in accordance with the Finnish Securities Market Act Chapter 2 § 9: Changes in Wärtsilä's ownership due to Fiskars Group's and Investor AB's merge of ownership interest

Wärtsilä Corporation, Company announcement, 24 April 2012 at 12.15 EET

Wärtsilä has today been informed of the following changes in ownership as a
result of Fiskars Group's and Investor AB's agreement to merge their ownership
interest through a joint venture.

Fiskars Group has informed Wärtsilä Corporation that it has through its
subsidiary Avlis AB sold Wärtsilä shares on 23 April 2012 and now owns less than
3/20 (15%) of the company's votes. Following the transaction Avlis AB owns
25,641,347 shares or 13% of Wärtsilä's share capital and total votes.

Investor AB has informed Wärtsilä Corporation that it has through its subsidiary
Aktiebolaget Navigare purchased Wärtsilä shares on 23 April 2012 and now owns
more than 1/20 (5%) of the company's votes. Following the transaction
Aktiebolaget Navigare owns 12,701,821 shares or 6.44% of Wärtsilä's share
capital and total votes.

The joint ownership of Fiskars Group and Investor AB exceeds 3/20 (15%), and is
following the transaction 38,343,168 shares or 19.44% of Wärtsilä's share
capital and votes. The basis for cumulating the shareholdings is the arrangement
announced on 24 April 2012 based on which Fiskars Group and Investor have agreed
to merge their respective Wärtsilä shareholdings through a joint venture and to
act in concert concerning their Wärtsilä shareholdings already as from the date
of the announcement.

www.wartsila.com

[HUG#1605355]