COGNOS INCORPORATED Material Change Report

Section 75(2) of the Securities Act (Ontario) Section 85(1)(b) of the Securities Act (British Columbia) Section 146(1)(b) of the Securities Act (Alberta) Section 84(1)(b) of The Securities Act , 1988 (Saskatchewan) Section 81(2) of the Securities Act (Nova Scotia) Section 76(2) of the Securities Act (Newfoundland)

1. Reporting Issuer

Cognos Incorporated 3755 Riverside Drive Ottawa, Ontario K1G 4K9

2. Date of Material Change

January 27, 2003

3. Press Release

The attached Press Release was distributed to PR Newswire on January 27, 2003.

4. Summary of Material Change

Cognos announced the appointment of Tony Sirianni to Senior Vice President, Worldwide Field Operations

5. Full Description of Material Change

On January 27, 2003, Cognos announced the appointment of Tony Sirianni to Senior Vice President, Worldwide Field Operations

6. Reliance on Confidentiality Provisions of Securities Legislation

not applicable.

7. Omitted Information

No significant facts remain confidential in, and no information has been omitted from, this Report.

8. Senior Officers

For further information please contact the following officers of Cognos at (613) 738-1440: Tom Manley, Senior Vice-President, Finance & Administration and Chief Financial Officer, or John Jussup, General Counsel & Corporate Secretary.

9. Statement of Senior Officer

The foregoing accurately discloses the material change referred to herein.

DATED at Ottawa, Ontario, this 27th day of January, 2003.

“W. John Jussup”

______ W. John Jussup, General Counsel & Corporate Secretary, Cognos Incorporated

Media Contact: Steve Milmore Cognos, 339-222-1040 Samantha Smith Horn Group Inc., 781-356-7139 Investor Relations: John Lawlor Cognos, 613-738-3503

COGNOS NAMES TONY SIRIANNI SENIOR VICE PRESIDENT, WORLDWIDE FIELD OPERATIONS

--Veteran sales professional given global mandate --

OTTAWA, ON and BURLINGTON, MA, January 27, 2003 -- Cognos (Nasdaq: COGN; TSX: CSN), the world leader in business intelligence and performance management, today announced that Tony Sirianni has been promoted to senior vice president, Worldwide Field Operations. Formerly senior vice president of North American Field Operations, Sirianni will be responsible for spearheading aggressive global sales initiatives, ensuring maximum customer success, and driving continued marketplace momentum.

With more than two decades of software sales experience, Sirianni was responsible for managing Cognos’ North American direct and indirect software sales, as well as services, marketing, finance, and administration. As senior vice president, Worldwide Field Operations, he will lead the Cognos team of experienced sales leaders in all geographies, as well as the company’s highly successful worldwide services organization.

“Tony has exhibited unwavering passion and leadership as he’s grown the North American sales and services operation in size and management depth. Today, Cognos has the most experienced, productive sales force and sales management among the BI vendors. With Tony at the helm of our global sales strategy and execution, we are extremely confident in our ability to drive customer value and continued growth,” said Rob Ashe, Cognos president and chief corporate officer.

During his eight years at Cognos, Sirianni has served in a variety of sales and operational positions including vice president, Partner Channels.

ABOUT COGNOS

Cognos, the world leader in business intelligence and 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 22,000 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.

Cognos and the Cognos logo are trademarks or registered trademarks of Cognos Incorporated in the United States and/or other countries. All other names are trademarks or registered trademarks of their respective companies.

Note to Editors: Copies of previous Cognos press releases and Corporate and product information are available on the Cognos Web site at www.cognos.com and at PR Newswire's site at www.prnewswire.com.