VAISALA CORPORATION STOCK EXCHANGE ANNOUNCEMENT 30.7.2015 SHARE REPURCHASE 30.7.2015 In the Helsinki Stock Exchange Trade date 30.7.2015 Bourse trade BUY Share VAIAS Amount 100 shares Total cost 2 396,00 EUR Average price/ share 23,9600 EUR Highest price/ share 23,96 EUR Lowest price/ share 23,96 EUR Vaisala Corporation now holds a total of 88 000 shares including the shares repurchased on 30.7.2015. On behalf of Vaisala Corporation NORDEA BANK FINLAND PLC Janne Sarvikivi Julius Summanen [HUG#1942651]