VAISALA CORPORATION STOCK EXCHANGE ANNOUNCEMENT 29.7.2015 SHARE REPURCHASE 29.7.2015 In the Helsinki Stock Exchange Trade date 29.7.2015 Bourse trade BUY Share VAIAS Amount 200 shares Total cost 4 759,24 EUR Average price/ share 23,7962 EUR Highest price/ share 23,96 EUR Lowest price/ share 23,75 EUR Vaisala Corporation now holds a total of 87 900 shares including the shares repurchased on 29.7.2015. On behalf of Vaisala Corporation NORDEA BANK FINLAND PLC Janne Sarvikivi Julius Summanen [HUG#1942206]