Riverbed Announces First Quarter Fiscal Year 2010 Earnings Release Date

Riverbed Technology (NASDAQ: RVBD), the IT performance company, will release first quarter fiscal year 2010 financial results after the close of market on Thursday, April 22, 2010. A live webcast of the earnings conference call will be made available at 2:30 p.m. Pacific Time on the Riverbed® Investor Relations website at www.riverbed.com/investors. The conference call and webcast will include forward looking information. A replay of the audio webcast will be available for 12 months.

About Riverbed

Riverbed Technology is the IT performance company. The Riverbed family of wide area network (WAN) optimization solutions liberates businesses from common IT constraints by increasing application performance, enabling consolidation, and providing enterprise-wide network and application visibility – all while eliminating the need to increase bandwidth, storage or servers. Thousands of companies with distributed operations use Riverbed to make their IT infrastructure faster, less expensive and more responsive. Additional information about Riverbed (NASDAQ: RVBD) is available at www.riverbed.com.

Riverbed Technology, Riverbed, Steelhead, RiOS, Interceptor, Think Fast, the Riverbed logo, Mazu, Profiler and Cascade are trademarks or registered trademarks of Riverbed Technology, Inc. All other trademarks used or mentioned herein belong to their respective owners.