Preview Systems, Inc.

DateInflation Amount Per Share*
12/8/1999**$70.2575***
12/9/1999$66.1344
12/10/1999$63.0004
12/13/1999$59.9907
12/14/1999$53.7094
12/15/1999$48.018
12/16/1999$49.9308
12/17/1999$60.9441
12/20/1999$57.3688
12/21/1999$57.2655
12/22/1999$53.2494
12/23/1999$51.9731
12/27/1999$48.2062
12/28/1999$56.9725
12/29/1999$54.1418
12/30/1999$53.5173
12/31/1999$60.6166
1/3/2000$62.1411
1/4/2000$55.2642
1/5/2000$52.9213
1/6/2000$50.6722
1/7/2000$49.8128
1/10/2000$54.0248
1/11/2000$51.2519
1/12/2000$51.3053
1/13/2000$52.3662
1/14/2000$53.394
1/18/2000$49.2513
1/19/2000$51.6189
1/20/2000$50.0836
1/21/2000$52.9494
1/24/2000$54.3194
1/25/2000$53.9983
1/26/2000$54.9874
1/27/2000$56.52
1/28/2000$51.6534
1/31/2000$45.32
2/1/2000$47.0422
2/2/2000$46.1355
2/3/2000$43.8106
2/4/2000$45.0973
2/7/2000$46.4736
2/8/2000$45.1454
2/9/2000$46.0855
2/10/2000$46.3631
2/11/2000$45.354
2/14/2000$44.8466
2/15/2000$43.1974
2/16/2000$42.8287
2/17/2000$48.2431
2/18/2000$49.8758
2/22/2000$46.9945
2/23/2000$46.8625
2/24/2000$49.2912
2/25/2000$50.3573
2/28/2000$47.8632
2/29/2000$48.7466
3/1/2000$62.4593
3/2/2000$63.8799
3/3/2000$62.3982
3/6/2000$62.7565
3/7/2000$62.1251
3/8/2000$57.3676
3/9/2000$61.1012
3/10/2000$60.002
3/13/2000$59.6362
3/14/2000$50.7095
3/15/2000$52.7216
3/16/2000$50.5112
3/17/2000$50.4069
3/20/2000$44.1038
3/21/2000$41.6064
3/22/2000$45.2383
3/23/2000$43.9246
3/24/2000$43.7895
3/27/2000$40.1318
3/28/2000$41.244
3/29/2000$39.2744
3/30/2000$40.1779
3/31/2000$42.9091
4/3/2000$42.8217
4/4/2000$36.8601
4/5/2000$31.3113
4/6/2000$30.6222
4/7/2000$30.9603
4/10/2000$27.2889
4/11/2000$24.9074
4/12/2000$21.5456
4/13/2000$15.4921
4/14/2000$13.0492
4/17/2000$11.7646
4/18/2000$13.1389
4/19/2000$15.6937
4/20/2000$14.9617
4/24/2000$11.5281
4/25/2000$10.6148
4/26/2000$10.1782
4/27/2000$9.556
4/28/2000$9.7693
5/1/2000$9.9624
5/2/2000$9.6084
5/3/2000$8.9464
5/4/2000$9.2025
5/5/2000$9.4868
5/8/2000$9.8096
5/9/2000$9.6959
5/10/2000$9.0225
5/11/2000$9.2651
5/12/2000$9.0896
5/15/2000$9.2657
5/16/2000$10.1538
5/17/2000$11.9703
5/18/2000$10.3812
5/19/2000$9.951
5/22/2000$9.9707
5/23/2000$10.1343
5/24/2000$9.7632
5/25/2000$8.6939
5/26/2000$8.6988
5/30/2000$8.2033
5/31/2000$7.0198
6/1/2000$6.721
6/2/2000$8.2741
6/5/2000$8.888
6/6/2000$8.5899
6/7/2000$8.003
6/8/2000$8.1961
6/9/2000$8.3591
6/12/2000$9.8343
6/13/2000$8.6271
6/14/2000$9.0668
6/15/2000$8.3191
6/16/2000$8.0049
6/19/2000$7.8703
6/20/2000$8.4184
6/21/2000$9.9977
6/22/2000$9.9465
6/23/2000$9.5286
6/26/2000$9.2261
6/27/2000$9.4164
6/28/2000$9.7258
6/29/2000$9.0424
6/30/2000$8.964
7/3/2000$8.5594
7/5/2000$7.5452
7/6/2000$7.7701
7/7/2000$7.8135
7/10/2000$7.6728
7/11/2000$7.2528
7/12/2000$7.3836
7/13/2000$9.0059
7/14/2000$9.429
7/17/2000$8.3394
7/18/2000$8.5067
7/19/2000$8.9465
7/20/2000$9.0671
7/21/2000$8.1622
7/24/2000$8.0007
7/25/2000$7.9369
7/26/2000$7.8051
7/27/2000$8.107
7/28/2000$6.8564
7/31/2000$6.5132
8/1/2000$6.2357
8/2/2000$6.2191
8/3/2000$6.3883
8/4/2000$6.6253
8/7/2000$6.9197
8/8/2000$6.6607
8/9/2000$5.9041
8/10/2000$4.9209
8/11/2000$5.1821
8/14/2000$5.0061
8/15/2000$4.9331
8/16/2000$4.7356
8/17/2000$4.6887
8/18/2000$4.9062
8/21/2000$4.6443
8/22/2000$4.7658
8/23/2000$4.8937
8/24/2000$4.7856
8/25/2000$5.0599
8/28/2000$4.901
8/29/2000$4.6702
8/30/2000$4.4342
8/31/2000$4.385
9/1/2000$4.2459
9/5/2000$4.0199
9/6/2000$3.5141
9/7/2000$3.6117
9/8/2000$4.9173
9/11/2000$7.6311
9/12/2000$5.9977
9/13/2000$5.5933
9/14/2000$5.2593
9/15/2000$5.5166
9/18/2000$5.658
9/19/2000$5.0764
9/20/2000$5.1107
9/21/2000$4.9981
9/22/2000$5.0725
9/25/2000$4.9962
9/26/2000$5.0035
9/27/2000$5.2917
9/28/2000$5.2282
9/29/2000$5.791
10/2/2000$5.616
10/3/2000$1.6319
10/4/2000$0.642
10/5/2000$0.5782
10/6/2000$0.3146
10/9/2000$0.9166
10/10/2000$1.0316
10/11/2000$1.0442
10/12/2000$0.766
10/13/2000$0.2606
10/16/2000$0.5175
10/17/2000$0.5744
10/18/2000$0.3105
10/19/2000$0.1813
10/20/2000$0.1896
10/23/2000$0.5146
10/24/2000$1.0251
10/25/2000$0.6392
10/26/2000$0.6402
10/27/2000$0.6217
10/30/2000$1.7238
10/31/2000$1.5675
11/1/2000$1.5414
11/2/2000$1.3818
11/3/2000$0.9172
11/6/2000$0.8898
11/7/2000$1.3239
11/8/2000$1.5695
11/9/2000$1.4123
11/10/2000$1.2231
11/13/2000$1.6376
11/14/2000$1.3317
11/15/2000$1.394
11/16/2000$1.6726
11/17/2000$1.601
11/20/2000$1.2819
11/21/2000$1.1038
11/22/2000$0.7752
11/24/2000$0.2585
11/27/2000$0.4146
11/28/2000$0.5838
11/29/2000$0.2048
11/30/2000$0.1955
12/1/2000$0.1544
12/4/2000$0.3962
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 $21.00 per share have no artificial inflation.