OTTAWA, ON AND BURLINGTON, MA, December 6, 2004— Cognos (NASDAQ: COGN; TSX: CSN), the world leader in business intelligence (EBI) and corporate performance management, today announced that Rob Rose, chief strategy officer of Cognos, will speak at the upcoming First Albany Capital Growth Conference on December 8 at The Mandarin Oriental in New York, NY.

During the session, Rose will review the current market landscape for enterprise planning and business intelligence, business strategies to maintain leadership in these markets and growth opportunities for Cognos in the corporate performance management market.

The presentation will begin at 10:00 a.m. Eastern Time. Listeners can access the presentation via webcast at http://www.cognos.com/company/investor/events. A replay of the webcast will be archived in the Investor Relations area of the Cognos web site following the presentation.

ABOUT COGNOS
Cognos, the world leader in business intelligence and corporate performance management, delivers software that helps companies drive, monitor and understand corporate performance.

Cognos delivers the next level of competitive advantage - Corporate Performance Management (CPM) - achieved through the strategic application of BI on an enterprise scale. Our integrated CPM solution helps customers drive performance through planning; monitor performance through scorecarding; and understand performance through business intelligence.

Cognos serves more than 23,000 customers in over 135 countries. Cognos enterprise business intelligence solutions and services are also available from more than 3,000 worldwide partners and resellers. For more information, visit the Cognos Web site at http://www.cognos.com.