Item 8.01 Other Events.

On June 11 through June 13, 2009, the executive officers of Ariba, Inc. ("Ariba") entered into written sales plans intended to comply with the requirements of Rule 10b5-1 under the Securities Exchange Act of 1934, as amended (the "Sales Plans"). Specifically, Robert Calderoni, Ariba's Chairman and Chief Executive Officer, Kent Parker, Ariba's Chief Operating Officer, Ahmed Rubaie, Ariba's Executive Vice President and Chief Financial Officer and Kevin Costello, Ariba's President each entered into his own Sales Plan intended to be in effect for one year from the effective date, unless terminated earlier under certain conditions.

The Sales Plans provide the executive officers with an opportunity to diversify their investment portfolios while avoiding concerns about transactions occurring at a time when they might possess material nonpublic information regarding Ariba.

Transactions made under the executive officers' Sales Plans will be reported to the Securities and Exchange Commission in accordance with applicable securities laws, rules and regulations. Except as may be so required, Ariba does not undertake any obligation to update or report any modification, termination, or other activity under the Sales Plans or any other plan that may be adopted by the executive officers or directors of Ariba.

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