Bob Calderoni, Chairman & CEO of Ariba, Inc.,
Rings The NASDAQ Stock Market Opening Bell

Thursday, September 14, 2006
at NASDAQ's MarketSite
in New York City.

Ariba, Inc.
[ARBA]

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

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.

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