VitalStream Holdings Inc. (VSTH) Chairman and CEO to Ring the NASDAQ Stock Market Closing Bell

Company Celebrates Listing


MEDIA ADVISORY, June 21, 2006 (PRIMEZONE) --



 What:
 Jack Waterman, Chairman and CEO of VitalStream Holdings Inc. (VSTH) 
 will preside over the closing bell to celebrate its listing on the 
 NASDAQ.

 Where:
 NASDAQ MarketSite -- 4 Times Square -- 43rd and Broadway --
 Broadcast Studio

 When: 
 Thursday, June 22nd, 2006 at 4:00 p.m. EDT

 Contacts:
 Alex Wellins, Investor Relations
 (415) 217-5861
 alex@blueshirtgroup.com

 NASDAQ MarketSite:
 Stephanie Lowenthal; 646.441.5220

Feed Information:

The closing bell is available from 3:50 p.m. to 4:05 p.m. on uplink IA-6 C-band/transponder 17. The downlink frequency is 4040 Vertical; Audio 6.2-6.8 The feed can also be found on Waterfront fiber 1623. If you have any questions, please contact Stephanie Lowenthal at (646) 441-5220.

Photos:

To obtain a hi-resolution photograph of the Market Close, please go to http://www.nasdaq.com/reference/marketsite_events.stm and click on the market close of your choice.

About VitalStream Holdings Inc (VSTH):

VitalStream, Inc., a wholly owned subsidiary of VitalStream Holdings, Inc. (Nasdaq:VSTH), is a global provider of integrated content delivery services that enable businesses to broadcast digital media and communications to worldwide audiences via the Internet. The company provides complete solutions, including video and audio streaming, advertising placement, delivery, reporting and analysis, live event broadcasting, media asset management, integrated Web hosting and consulting services, that seamlessly integrate with today's leading streaming media technologies. To ensure a worldwide reach, VitalStream engineered its award-winning content delivery network certified for quality delivery in the United States, Europe and Asia. For more information, visit www.vitalstream.com.