Vaisala Corporation Stock Exchange Release November 16, 2011 at 3.30 pm Vaisala will announce the 2011 annual results and year 2012 interim reports as follows: - Year 2011 financial statements on February 9, 2012 - January - March interim report on May 4, 2012 - January - June interim report on August 2, 2012 - January - November interim report on November 2, 2012 The printed Financial Statements and online Annual Report of 2011 will be published during the week 10, in March 2012. Vaisala's Annual General Meeting will be held on March 28, 2012. Further information: Liisa Ahtiluoto, Communications Manager Tel +358 9 8949 2725 , mobile +358 40 730 7695 www.vaisala.com Vaisala Oyj Distribution: NASDAQ OMX Finnish News Agency Other key media [HUG#1564404]