Framingham, Mass. — May 15, 2008 — Netezza Corporation (NYSE Arca: NZ), the global leader in analytic appliances, today announced that it will release financial results for its first fiscal quarter ended April 30, 2008 before the market opens on Thursday, May 29, 2008. Netezza will host a conference call and webcast at 8:30 AM Eastern Time (5:30 AM Pacific Time) that day to discuss its first quarter fiscal 2009 results.

The conference call can be accessed by dialing +1 866 831-5605 for participants in the United States and by dialing +1 617 213-8851 for participants outside the United States. The passcode for the conference call is 53984381. 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 31365099.

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, The Sherwin-Williams Company and Virgin Media. Based in Framingham, 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, Netezza Performance Server, NPS and streaming analytic are trademarks of Netezza Corporation. Other names may be trademarks of their respective owners.

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