Presentation to be Webcast Live on March 22, 2010

Marlborough, MA—March 9, 2010— Netezza Corporation (NYSE: NZ), the global leader in data warehouse, analytic and monitoring appliances, today announced that it will host an Analyst Day at the New York Stock Exchange on Monday, March 22, 2010. Key members of Netezza’s management team will host a series of presentations beginning at 3:00 pm Eastern Time and concluding at approximately 6:00 pm. An audio webcast of the presentation will be available live at the “Investor Relations” section of Netezza’s Web site at www.netezza.com. For those unable to listen to the live webcast, an archive of the presentation will be available on Netezza’s Web site.

Space for the event is limited and therefore available by invitation only. Analysts and institutional investors interested in attending are encouraged to contact Glen Zimmerman at Netezza by e-mail at gzimmerman@netezza.com as soon as possible to request an invitation.

About Netezza Corporation (NYSE: NZ)

Netezza Corporation is the global leader in data warehouse, analytic and monitoring appliances that dramatically simplify high-performance analytics across an extended enterprise. Netezza’s technology enables organizations to process enormous amounts of captured data at exceptional speed, providing a significant competitive and operational advantage in today’s data-intensive industries, including digital media, energy, financial services, government, health and life sciences, retail and telecommunications. Netezza is headquartered in Marlborough, Massachusetts and has offices in Northern Virginia, the United Kingdom, Germany, France, Japan, Korea, Australia and Singapore. For more information about Netezza, please visit www.netezza.com.

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