Netezza Corporation To Report Third Quarter Fiscal 2009 Financial Results On November 25, 2008

Marlborough, MA — Netezza Corporation (NYSE Arca: NZ), the global leader in data warehouse and analytic appliances, today announced that it will issue its financial results for the third fiscal quarter ended October 31, 2008 after market close on Tuesday, November 25, 2008. Netezza will host a conference call and webcast at 4:30 p.m. Eastern Time (1:30 p.m. Pacific Time) that day to discuss its third fiscal quarter 2009 results.

The conference call can be accessed by dialing +1 800 798-2864 for participants in the United States and by dialing +1 617 614-6206 for participants outside the United States. The passcode for the conference call is 15173897. A telephonic replay of the conference call will also be available two hours after the call and will run for two weeks. The replay can be accessed by dialing +1 888 286-8010 for participants in the United States and by dialing +1 617 801-6888 for participants outside the United States. The passcode for the replay is 96217585.

The webcast will be accessible from the “Investor Relations” section of Netezza’s Web site (http://www.netezza.com). The webcast will be archived on Netezza’s Web site for a period of one year.

About Netezza Corporation:

Netezza is the global leader in data warehouse and analytic appliances that dramatically simplify high-performance analytics for business users across the extended enterprise, delivering significant competitive and operational advantage in today’s information-intensive marketplaces. The Netezza Performance Server® (NPS®) family of streaming analytic™ appliances brings appliance simplicity to a broad range of complex data warehouse and analytic challenges. Customers who have realized the benefits of Netezza appliances include Ahold, Amazon.com, CNET Networks, Debenhams, Department of Veterans Affairs, Epsilon, Nationwide, Neiman Marcus, Orange UK, Premier, Inc., Ross Stores, Ryder System, Inc., The Carphone Warehouse and Virgin Media. Based in Marlborough, Mass., Netezza has offices in Washington, DC, the United Kingdom and Asia Pacific. For more information about Netezza, please visit www.netezza.com.

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Netezza Performance Server, NPS and streaming analytic are trademarks of Netezza Corporation. Other names may be trademarks of their respective owners.