Presentation to be Webcast Live on June 16, 2010

MARLBOROUGH, MA, — June 9, 2010 — Netezza Corporation (NYSE: NZ), the global leader in data warehouse, analytic and monitoring appliances, today announced that Patrick Scannell, senior vice president and chief financial officer, will be presenting at the William Blair & Company 30th Annual Growth Stock Conference to be held June 15-17, 2010 at the Four Seasons Hotel, Chicago, Illinois. Mr. Scannell will be presenting on Wednesday, June 16, 2010 at 1:20 p.m., Central Time (2:20 p.m., Eastern Time), and will discuss Netezza’s business strategy and recent financial results.

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.

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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