Vaisala Oyj

Report Publication Announcement • Feb 12, 2010

Disclosure 275971

Vaisala - Company Announcement

Vaisala's 2009 financial results published on 19 February 2010

Stock exchange release Vaisala Oyj 12 February 2010 at 11.00 am Vaisala publishes its 2009 financial results on Friday, 19 February 2010 at 9.00 am (GMT +2). The stock exchange release will be available on the company website atwww.vaisala.com http://www.vaisala.com/. CEO's presentation will be published at 11.00 am on the same day at www.vaisala.com/investorshttp://www.vaisala.com/investors. Briefing Briefing for analysts and media will be arranged in Hotel Kämp, Paavo Nurmi meeting room, Pohjoisesplanadi 29, Helsinki, starting at 11.00 am. Please register to the briefing by email to Helena Marjaranta,helena.marjaranta@vaisala.com helena.marjaranta@vaisala.com. Webcast A live webcast of the briefing will start at 11.00 am (GMT +2). The webcast will be available atwww.vaisala.com/investors/presentationshttp://www.vaisala.com/investors/presentations. The recorded webcast will be published at 1.00 pm at the same address . More information: Helena Marjaranta, Senior Vice President, Communications, tel. +358 40 581 9102 Distribution: NASDAQ OMX Main media [HUG#1383873]