Vaisala Oyj: SHARE REPURCHASE 22.10.2015 Published: Oct 22, 2015 Stock Exchange Releases VAISALA CORPORATION STOCK EXCHANGE ANNOUNCEMENT 22.10.2015 SHARE REPURCHASE 22.10.2015 In the Helsinki Stock Exchange Trade date 22.10.2015 Bourse trade BUY Share VAIAS Amount 2 000 shares Total cost 48.442,60 EUR Average price/ share 24,2213 EUR Highest price/ share 24,27 EUR Lowest price/ share 24,00 EUR Vaisala Corporation now holds a total of 162 240 sharesincluding the shares repurchased on 22.10.2015. On behalf of Vaisala Corporation NORDEA BANK FINLAND PLC Janne Sarvikivi Julius Summanen