VAISALA CORPORATION STOCK EXCHANGE ANNOUNCEMENT 13.11.2015 SHARE REPURCHASE 13.11.2015 In the Helsinki Stock Exchange Trade date 13.11.2015 Bourse trade BUY Share VAIAS Amount 2 480 shares Total cost 61.698,93 EUR Average price/ share 24,8786 EUR Highest price/ share 24,89 EUR Lowest price/ share 24,73 EUR Vaisala Corporation now holds a total of 179 964 shares including the shares repurchased on 13.11.2015. On behalf of Vaisala Corporation NORDEA BANK FINLAND PLC Janne Sarvikivi Julius Summanen [HUG#1966821]