OTTAWA, ON, October 4, 2001—As previously announced on September 20, 2001, Cognos Incorporated (Nasdaq:COGN; TSE:CSN) today confirmed that it has adopted a stock repurchase program that will enable the Company to purchase up to 4,400,943 common shares (not more than 5% of the 88,018,878 common shares currently issued and outstanding) between October 9, 2001 and October 8, 2002. Any purchases will be done on The Toronto Stock Exchange or The Nasdaq Stock Market at prevailing open market prices and paid out of general corporate funds. The Company is of the view that current market prices undervalue the Company's shares. All repurchased shares will be cancelled. No shares will be knowingly purchased from Company insiders or their affiliates. The Company's previous stock repurchase program, which was adopted on October 9, 2000, expires on October 8, 2001.