Cognos Provides Status Update

Ottawa, Ontario and Burlington, Massachusetts, June 26, 2006— Cognos (Nasdaq: COGN; TSX: CSN) today provides the following update in accordance with Ontario Securities Commission (“OSC”) guidelines pursuant to which a management and insider cease trade order was issued by the OSC.

Cognos continues to work with the Staff of the Division of Corporation Finance of the Securities and Exchange Commission (“SEC”) to conclude its ongoing review by the SEC . Cognos previously announced that the delay of U.S. and Canadian annual filings and first quarter results is based on this ongoing review which may impact the manner in which Cognos allocates revenue. As previously indicated, Cognos is unable to provide an assurance as to the outcome of this review.

The OSC temporary (15-day) management and insider cease trade order was replaced by a non-temporary order on June 14, 2006. This order will remain in effect until two full business days following the receipt by the OSC of all filings required to be made by the Company pursuant to Ontario securities laws. As contemplated by OSC guidelines, Cognos will continue to provide bi-weekly updates by means of a press release until such time as it is current with its filing obligations under Canadian securities laws. Cognos will provide the next update on or about July 10, 2006.

Safe Harbor for Forward-Looking Statements:
Certain statements made in this Press Release that are not based on historical information are forward-looking statements which are made pursuant to the safe harbor provisions of Section 21E of the Securities Exchange Act of 1934 and Section 138.4(9) of the Ontario Securities Act. Such forward-looking statements relate to, among other things, Cognos’ continuing efforts to conclude the SEC review; the potential outcome of that review; the duration of the non-temporary management and insider cease trade order; and Cognos’ expectations regarding future updates. These forward-looking statements are neither promises nor guarantees, but involve risks, factors and uncertainties that may cause actual results to differ materially from those in the forward-looking statements. Factors that may cause such differences include, but are not limited to: the outcome of the SEC Staff review and discussions and any potential SEC inquiry; the impact of the implementation of changes in the application of accounting pronouncements and interpretations; the outcome of Cognos’ upcoming hearing before the Nasdaq Listing Qualifications Panel; and the status of and any actions in connection with the management and insider cease trade order; rules and pronouncements of foreign jurisdictions and their interpretation by foreign courts, tribunals, regulatory and similar bodies; and the risk factors and other disclosures discussed in Cognos’ most recent Annual Report on Form 10-K, Quarterly Reports on Form 10-Q and Form 12b-25, filed with the SEC and the Canadian Securities Administrators (“CSA”), as well as other periodic reports filed with the SEC and the CSA. Readers should not place undue reliance on any such forward-looking statements, which speak only as of the date they are made. Except as otherwise required by law, Cognos disclaims any obligation to publicly update or revise any such statement to reflect any change in its expectations or in events, conditions, or circumstances on which any such statements may be based, or that may affect the likelihood that actual results will differ from those contained in the forward-looking statements.

About Cognos:
Cognos, the world leader in business intelligence and performance management solutions, provides world-class enterprise planning and BI software and services to help companies plan, understand and manage financial and operational performance.

Cognos brings together technology, analytical applications, best practices, and a broad network of partners to give customers a complete performance system. The Cognos performance system is an open and adaptive solution that leverages an organization’s ERP, packaged applications, and database investments. It gives customers the ability to answer the questions -- How are we doing? Why are we on or off track? What should we do about it? – and enables them to understand and monitor current performance while planning future business strategies.

Cognos serves more than 23,000 customers in more than 135 countries, and its top 100 enterprise customers consistently outperform market indexes. Cognos performance management 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.