Wärtsilä Corporation STOCK EXCHANGE ANNOUNCEMENT 24.1.2007 at 3.30 pm 1(1) IMPACT OF WÄRTSILÄS EXTRA DIVIDEND ON STOCK OPTION SCHEMES The extra dividend of 1.50 euros per share approved by Wärtsiläs Extraordinary General Meeting on 24 November 2006 will reduce the subscription price of the 2001 and 2002 stock options as provided by the terms and conditions of these schemes, by the amount of the extra dividend, i.e. by 1.50 euros per share. Thus the subscription price of the Wärtsilä B share under the 2001 options is 14.60 euros and under the 2002 options 7.40 euros. www.wartsila.com