Ariba, Inc.

DateInflation Amount Per Share*
6/23/1999**$0***
6/24/1999$0
6/25/1999$0
6/28/1999$0
6/29/1999$0
6/30/1999$0
7/1/1999$0
7/2/1999$0
7/6/1999$0
7/7/1999$0
7/8/1999$0
7/9/1999$0
7/12/1999$0
7/13/1999$0
7/14/1999$0
7/15/1999$0
7/16/1999$0
7/19/1999$0
7/20/1999$0
7/21/1999$0
7/22/1999$0
7/23/1999$0
7/26/1999$0
7/27/1999$0
7/28/1999$0
7/29/1999$0
7/30/1999$0
8/2/1999$0
8/3/1999$0
8/4/1999$0
8/5/1999$0
8/6/1999$0
8/9/1999$0
8/10/1999$0
8/11/1999$0
8/12/1999$0
8/13/1999$0
8/16/1999$0
8/17/1999$0
8/18/1999$0
8/19/1999$0
8/20/1999$0
8/23/1999$0
8/24/1999$0
8/25/1999$0
8/26/1999$0
8/27/1999$0
8/30/1999$0
8/31/1999$0
9/1/1999$0
9/2/1999$0
9/3/1999$0
9/7/1999$0
9/8/1999$0
9/9/1999$0
9/10/1999$0
9/13/1999$0
9/14/1999$0
9/15/1999$0
9/16/1999$0
9/17/1999$0
9/20/1999$0
9/21/1999$0
9/22/1999$0
9/23/1999$0
9/24/1999$0
9/27/1999$0
9/28/1999$0
9/29/1999$0
9/30/1999$0
10/1/1999$0
10/4/1999$0
10/5/1999$0
10/6/1999$0
10/7/1999$0
10/8/1999$0
10/11/1999$0
10/12/1999$0
10/13/1999$0
10/14/1999$0
10/15/1999$0
10/18/1999$0
10/19/1999$0
10/20/1999$0
10/21/1999$0
10/22/1999$0
10/25/1999$0
10/26/1999$0
10/27/1999$0
10/28/1999$0
10/29/1999$0
11/1/1999$0
11/2/1999$0
11/3/1999$0
11/4/1999$0
11/5/1999$0
11/8/1999$0
11/9/1999$0
11/10/1999$0
11/11/1999$0
11/12/1999$0
11/15/1999$0
11/16/1999$0
11/17/1999$0
11/18/1999$0
11/19/1999$0
11/22/1999$0
11/23/1999$0
11/24/1999$0
11/26/1999$0
11/29/1999$0
11/30/1999$0
12/1/1999$0
12/2/1999$0
12/3/1999$0
12/6/1999$0
12/7/1999$0
12/8/1999$0
12/9/1999$0
12/10/1999$0
12/13/1999$0
12/14/1999$0
12/15/1999$0
12/16/1999$0
12/17/1999$0
12/20/1999$0
12/21/1999$0
12/22/1999$0
12/23/1999$1.3631
12/27/1999$7.9604
12/28/1999$8.802
12/29/1999$4.8925
12/30/1999$3.484
12/31/1999$5.2848
1/3/2000$9.6117
1/4/2000$11.2398
1/5/2000$6.0509
1/6/2000$0.4168
1/7/2000$4.3103
1/10/2000$13.8504
1/11/2000$15.1231
1/12/2000$5.3186
1/13/2000$6.3163
1/14/2000$3.8557
1/18/2000$5.9813
1/19/2000$8.1498
1/20/2000$6.1016
1/21/2000$7.4187
1/24/2000$8.3581
1/25/2000$5.6159
1/26/2000$6.8596
1/27/2000$8.8962
1/28/2000$8.8416
1/31/2000$2.6296
2/1/2000$1.589
2/2/2000$4.2776
2/3/2000$3.5285
2/4/2000$6.8763
2/7/2000$8.886
2/8/2000$6.4449
2/9/2000$7.2817
2/10/2000$7.7736
2/11/2000$19.3585
2/14/2000$19.9488
2/15/2000$22.5247
2/16/2000$20.8412
2/17/2000$23.8172
2/18/2000$27.3114
2/22/2000$28.8467
2/23/2000$28.0544
2/24/2000$29.9717
2/25/2000$32.0835
2/28/2000$32.12
2/29/2000$31.2133
3/1/2000$32.12
3/2/2000$32.12
3/3/2000$32.12
3/6/2000$32.12
3/7/2000$32.12
3/8/2000$32.12
3/9/2000$32.12
3/10/2000$32.12
3/13/2000$32.12
3/14/2000$32.12
3/15/2000$32.12
3/16/2000$30.7638
3/17/2000$30.5672
3/20/2000$28.0669
3/21/2000$19.6717
3/22/2000$27.8384
3/23/2000$27.897
3/24/2000$25.1329
3/27/2000$15.6752
3/28/2000$22.9397
3/29/2000$12.6356
3/30/2000$13.329
3/31/2000$8.1982
4/3/2000$2.9233
4/4/2000$8.0238
4/5/2000$8.4262
4/6/2000$9.3325
4/7/2000$7.295
4/10/2000$3.6433
4/11/2000$0.8559
4/12/2000$0
4/13/2000$0
4/14/2000$0
4/17/2000$0
4/18/2000$0
4/19/2000$0
4/20/2000$0
4/24/2000$0
4/25/2000$0
4/26/2000$0
4/27/2000$0
4/28/2000$0
5/1/2000$2.0975
5/2/2000$0
5/3/2000$1.1997
5/4/2000$0.6578
5/5/2000$0.0836
5/8/2000$0
5/9/2000$0
5/10/2000$0
5/11/2000$0
5/12/2000$0
5/15/2000$0
5/16/2000$0
5/17/2000$0
5/18/2000$0
5/19/2000$0
5/22/2000$0
5/23/2000$0
5/24/2000$0
5/25/2000$0
5/26/2000$0
5/30/2000$0
5/31/2000$0
6/1/2000$0
6/2/2000$0
6/5/2000$1.0653
6/6/2000$0
6/7/2000$1.0684
6/8/2000$1.305
6/9/2000$0.8204
6/12/2000$0
6/13/2000$0
6/14/2000$0
6/15/2000$0
6/16/2000$0
6/19/2000$1.0289
6/20/2000$3.8844
6/21/2000$5.8713
6/22/2000$4.7644
6/23/2000$4.0434
6/26/2000$5.2576
6/27/2000$4.4346
6/28/2000$6.0352
6/29/2000$6.7161
6/30/2000$7.3351
7/3/2000$7.2518
7/5/2000$10.2851
7/6/2000$6.8067
7/7/2000$5.0772
7/10/2000$6.7388
7/11/2000$4.1847
7/12/2000$11.0958
7/13/2000$32.12
7/14/2000$32.12
7/17/2000$30.9607
7/18/2000$32.12
7/19/2000$32.12
7/20/2000$32.12
7/21/2000$32.12
7/24/2000$32.12
7/25/2000$32.12
7/26/2000$32.12
7/27/2000$32.12
7/28/2000$30.6388
7/31/2000$32.12
8/1/2000$32.12
8/2/2000$32.12
8/3/2000$32.12
8/4/2000$32.12
8/7/2000$32.12
8/8/2000$32.12
8/9/2000$32.12
8/10/2000$32.12
8/11/2000$32.12
8/14/2000$32.12
8/15/2000$32.12
8/16/2000$32.12
8/17/2000$32.12
8/18/2000$32.12
8/21/2000$32.12
8/22/2000$32.12
8/23/2000$32.12
8/24/2000$32.12
8/25/2000$32.12
8/28/2000$32.12
8/29/2000$32.12
8/30/2000$32.12
8/31/2000$32.12
9/1/2000$32.12
9/5/2000$32.12
9/6/2000$32.12
9/7/2000$32.12
9/8/2000$32.12
9/11/2000$32.12
9/12/2000$32.12
9/13/2000$32.12
9/14/2000$32.12
9/15/2000$32.12
9/18/2000$32.12
9/19/2000$32.12
9/20/2000$32.12
9/21/2000$32.12
9/22/2000$32.12
9/25/2000$32.12
9/26/2000$32.12
9/27/2000$32.12
9/28/2000$32.12
9/29/2000$32.12
10/2/2000$32.12
10/3/2000$32.12
10/4/2000$32.12
10/5/2000$32.12
10/6/2000$32.12
10/9/2000$32.12
10/10/2000$32.12
10/11/2000$32.12
10/12/2000$32.12
10/13/2000$32.12
10/16/2000$32.12
10/17/2000$32.12
10/18/2000$32.12
10/19/2000$32.12
10/20/2000$32.12
10/23/2000$32.12
10/24/2000$32.12
10/25/2000$32.12
10/26/2000$32.12
10/27/2000$32.12
10/30/2000$32.12
10/31/2000$32.12
11/1/2000$32.12
11/2/2000$32.12
11/3/2000$32.12
11/6/2000$32.12
11/7/2000$32.12
11/8/2000$32.12
11/9/2000$32.12
11/10/2000$32.12
11/13/2000$32.12
11/14/2000$32.12
11/15/2000$26.8691
11/16/2000$5.2374
11/17/2000$1.974
11/20/2000$0
11/21/2000$1.0488
11/22/2000$0
11/24/2000$10.3973
11/27/2000$0
11/28/2000$0
11/29/2000$0
11/30/2000$0
12/1/2000$0
12/4/2000$0
12/5/2000$11.6849
12/6/2000$0

* Data shown are adjusted forward for all stock splits between the IPO and 12/6/00.

** Purchases on a date not listed in the chart above have no artificial inflation.

*** Purchases in the IPO itself at $23.00 per share have no artificial inflation.