Predictive Systems, Inc.

DateInflation Amount Per Share*
10/27/1999**$20.8066***
10/28/1999$20.6355
10/29/1999$20.8066
11/1/1999$20.8066
11/2/1999$20.8066
11/3/1999$20.8066
11/4/1999$20.8066
11/5/1999$20.8066
11/8/1999$20.8066
11/9/1999$20.8066
11/10/1999$20.8066
11/11/1999$20.8066
11/12/1999$20.8066
11/15/1999$20.8066
11/16/1999$20.8066
11/17/1999$20.8066
11/18/1999$20.8066
11/19/1999$20.8066
11/22/1999$20.8066
11/23/1999$20.8066
11/24/1999$20.8066
11/26/1999$20.8066
11/29/1999$20.8066
11/30/1999$20.8066
12/1/1999$20.8066
12/2/1999$20.8066
12/3/1999$20.8066
12/6/1999$20.8066
12/7/1999$20.8066
12/8/1999$20.8066
12/9/1999$20.8066
12/10/1999$20.8066
12/13/1999$20.8066
12/14/1999$20.8066
12/15/1999$20.8066
12/16/1999$20.8066
12/17/1999$20.8066
12/20/1999$20.8066
12/21/1999$20.8066
12/22/1999$20.8066
12/23/1999$20.8066
12/27/1999$20.8066
12/28/1999$20.8066
12/29/1999$20.8066
12/30/1999$20.8066
12/31/1999$20.8066
1/3/2000$20.8066
1/4/2000$20.8066
1/5/2000$20.8066
1/6/2000$20.8066
1/7/2000$20.8066
1/10/2000$20.8066
1/11/2000$20.8066
1/12/2000$20.8066
1/13/2000$20.8066
1/14/2000$20.8066
1/18/2000$20.8066
1/19/2000$20.8066
1/20/2000$20.8066
1/21/2000$20.8066
1/24/2000$20.8066
1/25/2000$20.8066
1/26/2000$20.8066
1/27/2000$20.8066
1/28/2000$20.8066
1/31/2000$20.8066
2/1/2000$20.8066
2/2/2000$20.8066
2/3/2000$20.8066
2/4/2000$20.8066
2/7/2000$20.8066
2/8/2000$20.8066
2/9/2000$20.8066
2/10/2000$20.8066
2/11/2000$20.8066
2/14/2000$20.8066
2/15/2000$20.8066
2/16/2000$20.8066
2/17/2000$20.8066
2/18/2000$20.8066
2/22/2000$20.8066
2/23/2000$20.8066
2/24/2000$20.8066
2/25/2000$20.8066
2/28/2000$20.8066
2/29/2000$20.8066
3/1/2000$20.8066
3/2/2000$20.8066
3/3/2000$20.8066
3/6/2000$20.8066
3/7/2000$20.8066
3/8/2000$20.8066
3/9/2000$20.8066
3/10/2000$20.8066
3/13/2000$20.8066
3/14/2000$20.8066
3/15/2000$20.8066
3/16/2000$20.8066
3/17/2000$20.8066
3/20/2000$20.8066
3/21/2000$20.8066
3/22/2000$20.8066
3/23/2000$20.8066
3/24/2000$20.8066
3/27/2000$20.8066
3/28/2000$20.8066
3/29/2000$20.8066
3/30/2000$20.8066
3/31/2000$20.8066
4/3/2000$20.8066
4/4/2000$20.7903
4/5/2000$20.8066
4/6/2000$20.7792
4/7/2000$20.6688
4/10/2000$20.5003
4/11/2000$20.8066
4/12/2000$20.7505
4/13/2000$20.8066
4/14/2000$19.9212
4/17/2000$19.4208
4/18/2000$20.2531
4/19/2000$20.5192
4/20/2000$20.5741
4/24/2000$20.7025
4/25/2000$20.797
4/26/2000$20.8066
4/27/2000$20.8066
4/28/2000$20.8066
5/1/2000$20.8066
5/2/2000$20.8066
5/3/2000$20.1559
5/4/2000$20.8066
5/5/2000$20.8066
5/8/2000$20.7911
5/9/2000$20.3952
5/10/2000$20.551
5/11/2000$19.8255
5/12/2000$20.4329
5/15/2000$20.4675
5/16/2000$19.0384
5/17/2000$19.1618
5/18/2000$19.4684
5/19/2000$19.6521
5/22/2000$18.8136
5/23/2000$13.5187
5/24/2000$12.6326
5/25/2000$13.5263
5/26/2000$14.1693
5/30/2000$14.3295
5/31/2000$15.5176
6/1/2000$16.1257
6/2/2000$18.8605
6/5/2000$20.6805
6/6/2000$20.8066
6/7/2000$20.7792
6/8/2000$20.6788
6/9/2000$20.5353
6/12/2000$20.2782
6/13/2000$19.8347
6/14/2000$19.7454
6/15/2000$19.8462
6/16/2000$19.733
6/19/2000$18.8253
6/20/2000$19.5738
6/21/2000$19.9095
6/22/2000$18.8417
6/23/2000$19.0878
6/26/2000$18.7406
6/27/2000$18.5801
6/28/2000$18.3024
6/29/2000$18.6444
6/30/2000$18.3431
7/3/2000$18.2882
7/5/2000$18.7647
7/6/2000$18.6656
7/7/2000$18.5768
7/10/2000$18.3191
7/11/2000$18.196
7/12/2000$19.3329
7/13/2000$19.9464
7/14/2000$19.9187
7/17/2000$19.6366
7/18/2000$19.3214
7/19/2000$18.8466
7/20/2000$16.6017
7/21/2000$13.8922
7/24/2000$9.8574
7/25/2000$8.8078
7/26/2000$8.3873
7/27/2000$6.0634
7/28/2000$6.2126
7/31/2000$7.6791
8/1/2000$7.9259
8/2/2000$8.1672
8/3/2000$8.8043
8/4/2000$8.9442
8/7/2000$8.9573
8/8/2000$8.6121
8/9/2000$7.8995
8/10/2000$7.6917
8/11/2000$8.2433
8/14/2000$6.8143
8/15/2000$5.6484
8/16/2000$5.2383
8/17/2000$4.8243
8/18/2000$4.3188
8/21/2000$2.3378
8/22/2000$3.1997
8/23/2000$4.7269
8/24/2000$6.5595
8/25/2000$6.4616
8/28/2000$6.3359
8/29/2000$5.7922
8/30/2000$5.11
8/31/2000$3.918
9/1/2000$1.7409
9/5/2000$1.0632
9/6/2000$1.4434
9/7/2000$0.8889
9/8/2000$4.36
9/11/2000$8.2523
9/12/2000$6.8259
9/13/2000$5.217
9/14/2000$3.4512
9/15/2000$3.0832
9/18/2000$3.1276
9/19/2000$1.6542
9/20/2000$2.4267
9/21/2000$1.6396
9/22/2000$2.6653
9/25/2000$1.0898
9/26/2000$2.1698
9/27/2000$6.1233
9/28/2000$6.096
9/29/2000$5.6739
10/2/2000$4.6489
10/3/2000$4.9315
10/4/2000$5.6202
10/5/2000$0.0573
10/6/2000$1.2086
10/9/2000$1.238
10/10/2000$0
10/11/2000$0
10/12/2000$0
10/13/2000$0.0457
10/16/2000$0
10/17/2000$0
10/18/2000$0
10/19/2000$1.3128
10/20/2000$0.9797
10/23/2000$0.624
10/24/2000$0.9889
10/25/2000$0.5964
10/26/2000$1.5407
10/27/2000$2.2221
10/30/2000$0.6839
10/31/2000$0.9161
11/1/2000$1.7374
11/2/2000$1.5663
11/3/2000$5.464
11/6/2000$6.5958
11/7/2000$9.8315
11/8/2000$9.2621
11/9/2000$9.6227
11/10/2000$8.5616
11/13/2000$6.271
11/14/2000$6.6623
11/15/2000$5.295
11/16/2000$6.2494
11/17/2000$5.5926
11/20/2000$2.4047
11/21/2000$2.3796
11/22/2000$1.5316
11/24/2000$0.5678
11/27/2000$0.14
11/28/2000$0
11/29/2000$0
11/30/2000$0
12/1/2000$0
12/4/2000$0
12/5/2000$0
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 $18.00 per share have no artificial inflation.