VAISALA CORPORATION STOCK EXCHANGE ANNOUNCEMENT 2.10.2015 SHARE REPURCHASE 2.10.2015 In the Helsinki Stock Exchange Trade date 2.10.2015 Bourse trade BUY Share VAIAS Amount 1 100 shares Total cost 25.993,00 EUR Average price/ share 23,6300 EUR Highest price/ share 23,69 EUR Lowest price/ share 23,49 EUR Vaisala Corporation now holds a total of 140 224 shares including the shares repurchased on 2.10.2015. On behalf of Vaisala Corporation NORDEA BANK FINLAND PLC Janne Sarvikivi Julius Summanen [HUG#1956500]