Ariba, Inc. (ARBA) Chairman and CEO to Ring the NASDAQ Stock Market Opening Bell

Company Celebrates Tenth Anniversary


MEDIA ADVISORY, Sept. 13, 2006 (PRIMEZONE) --



 What:
 Bob Calderoni, Chairman & CEO of Ariba, Inc. (ARBA) will
 preside over the opening bell to celebrate its ten-year business
 anniversary.

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

 When:
 Thursday September 14th, 2006 at 9:30 a.m. EDT

 Contacts:
 Ms. Karen Master
 Senior Manager of Public Relations
 412-719-0807
 kmaster@ariba.com

 NASDAQ MarketSite:
 Stephanie Lowenthal; 646.441.5220

Feed Information:

The opening bell is available from 9:20 a.m. to 9:35 a.m. on uplink IA6 C band / transponder 24, downlink frequency 4180 horizontal. 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 Open, please go to http://www.nasdaq.com/reference/marketsite_events.stm and click on the market open of your choice.

About Ariba, Inc. (ARBA):

Ariba, Inc. is the leading provider of Spend Management solutions to help companies realize rapid and sustainable bottom line results. Successful companies around the world in every industry use Ariba Spend Management(tm) software and services. Ariba can be contacted in the U.S. at 1.650.390.1000 or at www.ariba.com.