ONI Systems Corp.

DateInflation Amount Per Share*
6/1/2000**$7.14***
6/2/2000$2.7026
6/5/2000$10.7831
6/6/2000$7.3673
6/7/2000$5.1114
6/8/2000$5.1449
6/9/2000$4.6241
6/12/2000$5.4927
6/13/2000$4.7387
6/14/2000$8.6014
6/15/2000$7.6766
6/16/2000$9.5774
6/19/2000$14.1087
6/20/2000$16.1403
6/21/2000$23.585
6/22/2000$29.7665
6/23/2000$21.6884
6/26/2000$16.7902
6/27/2000$14.0664
6/28/2000$16.1615
6/29/2000$19.0763
6/30/2000$21.8954
7/3/2000$17.436
7/5/2000$18.2234
7/6/2000$15.1037
7/7/2000$12.3212
7/10/2000$16.0638
7/11/2000$19.6811
7/12/2000$20.3046
7/13/2000$20.836
7/14/2000$16.8187
7/17/2000$17.5219
7/18/2000$16.3437
7/19/2000$15.8097
7/20/2000$17.328
7/21/2000$17.2463
7/24/2000$20.6606
7/25/2000$21.9305
7/26/2000$23.8244
7/27/2000$16.846
7/28/2000$10.6495
7/31/2000$9.3137
8/1/2000$5.7024
8/2/2000$2.1946
8/3/2000$13.955
8/4/2000$12.9033
8/7/2000$14.3492
8/8/2000$16.5723
8/9/2000$15.9435
8/10/2000$10.1672
8/11/2000$14.4699
8/14/2000$14.4642
8/15/2000$13.1043
8/16/2000$11.2597
8/17/2000$17.2004
8/18/2000$18.3421
8/21/2000$15.8489
8/22/2000$16.5637
8/23/2000$12.214
8/24/2000$8.2699
8/25/2000$5.9378
8/28/2000$11.8786
8/29/2000$8.6753
8/30/2000$8.5956
8/31/2000$8.1992
9/1/2000$11.9269
9/5/2000$13.4501
9/6/2000$7.5388
9/7/2000$8.6759
9/8/2000$3.8826
9/11/2000$6.3165
9/12/2000$3.223
9/13/2000$7.5989
9/14/2000$7.5111
9/15/2000$3.8403
9/18/2000$7.6041
9/19/2000$10.0992
9/20/2000$12.7608
9/21/2000$11.2217
9/22/2000$16.784
9/25/2000$14.4571
9/26/2000$11.1833
9/27/2000$9.314
9/28/2000$3.9491
9/29/2000$10.023
10/2/2000$3.1226
10/3/2000$0.7964
10/4/2000$2.3171
10/5/2000$0.2662
10/6/2000$0
10/9/2000$0
10/10/2000$0
10/11/2000$4.5123
10/12/2000$1.994
10/13/2000$2.6716
10/16/2000$7.9419
10/17/2000$6.5706
10/18/2000$3.6247
10/19/2000$1.9582
10/20/2000$6.036
10/23/2000$4.2566
10/24/2000$8.0828
10/25/2000$3.3233
10/26/2000$3.5107
10/27/2000$7.2884
10/30/2000$3.1653
10/31/2000$9.0815
11/1/2000$4.5759
11/2/2000$1.9369
11/3/2000$0.8135
11/6/2000$0.787
11/7/2000$0.7558
11/8/2000$0.4078
11/9/2000$0.2718
11/10/2000$0.1007
11/13/2000$0.1432
11/14/2000$2.1461
11/15/2000$1.7038
11/16/2000$0.2859
11/17/2000$0.259
11/20/2000$0
11/21/2000$0.0929
11/22/2000$0
11/24/2000$0
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$2.3337
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 $25.00 per share have no artificial inflation.