Netezza Corporation To Report Second Quarter Fiscal 2010 Financial Results On August 27, 2009

Marlborough, MA — Netezza Corporation (NYSE: NZ), the global leader in data warehouse and analytic appliances, today announced that it will issue its financial results for the second fiscal quarter ended July 31, 2009 after market close on Thursday, August 27, 2009. 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 second quarter fiscal 2010 results.

The conference call can be accessed by dialing +1-800-901-5248 for participants in the United States and by dialing +1-617-786-4512 for participants outside the United States. The passcode for the conference call is 42737331. 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 65003200.

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 (NYSE: NZ)

Netezza Corporation is the global leader in data warehouse and analytic 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, Canada, the United Kingdom, Germany, France, Japan, Korea, Australia and Singapore. For more information about Netezza, please visit www.netezza.com.

Netezza® and the Netezza logo are either registered trademarks or trademarks of Netezza Corporation. Other names may be trademarks of their respective owners.