X0303 4 2010-11-22 0001084755 ARIBA INC ARBA 0001440658 Rubaie Ahmed C/O ARIBA, INC. 807 11TH AVENUE SUNNYVALE CA 94089 0 1 0 0 Chief Financial Officer Common Stock 2010-11-22 4 F 0 49993 20.80 D 192541 D Common Stock 2010-11-22 4 S 0 10000 19.75 D 182541 D Common Stock 2010-11-23 4 S 0 68395 19.8036 D 114146 D Common Stcok 776 I Through 401(k) Plan Reflects shares withheld or surrendered to the Issuer to satisfy income and employment tax withholding obligations in accordance with Rule 16b-3 upon settlement/vesting of awards covering an aggregate of 138,388 shares, specifically with respect to the following awards: 30,888 shares acquired pursuant to a restricted stock award (the acquisition of which shares were reported on a Form 4 for July 21, 2008); 10,000 shares purchased in the open market and reported on Form 4 for December 12, 2008; and 97,500 shares acquired pursuant to a fiscal year 2009 Performance Stock Unit (the acquisition of which shares were reported on a Form 4 for October 28, 2010, the "2009 PSU"). The end of period holdings for the reporting person's directly-owned shares reflects an adjustment from the number reported on the last-filed Form 4 because the end of period holdings reported in the prior Form 4 inadvertently included the 776 shares indirectly held by the reporting person through his 401(k) plan account (these shares are reported as indirectly owned in the table above) and did not include an aggregate of 40,888 shares that represent the sum of 33,888 shares related to the 2007 RS Award and 10,000 shares purchased in the open market, each of which have been previously reported as described in Footnote 1. Ahmed Rubaie 2010-11-24