Perot Systems Corp.

DateInflation Amount Per Share*
2/2/1999**$30.2559***
2/3/1999$30.2559
2/4/1999$30.2559
2/5/1999$30.2559
2/8/1999$30.2559
2/9/1999$30.2559
2/10/1999$30.0298
2/11/1999$29.9126
2/12/1999$29.3716
2/16/1999$27.6398
2/17/1999$26.6364
2/18/1999$30.1036
2/19/1999$29.6289
2/22/1999$29.308
2/23/1999$28.6934
2/24/1999$28.3265
2/25/1999$28.3669
2/26/1999$30.2559
3/1/1999$29.4674
3/2/1999$28.8595
3/3/1999$28.4638
3/4/1999$28.4834
3/5/1999$28.6314
3/8/1999$28.0924
3/9/1999$27.7389
3/10/1999$27.1695
3/11/1999$27.5977
3/12/1999$27.9044
3/15/1999$27.3823
3/16/1999$26.8491
3/17/1999$26.6785
3/18/1999$26.157
3/19/1999$25.1324
3/22/1999$21.7852
3/23/1999$20.6571
3/24/1999$22.3744
3/25/1999$21.419
3/26/1999$20.8463
3/29/1999$19.9349
3/30/1999$18.9698
3/31/1999$17.163
4/1/1999$16.7946
4/5/1999$16.1163
4/6/1999$15.0697
4/7/1999$19.4972
4/8/1999$17.5319
4/9/1999$18.6271
4/12/1999$18.1489
4/13/1999$18.3811
4/14/1999$19.3103
4/15/1999$18.6751
4/16/1999$18.9301
4/19/1999$16.9753
4/20/1999$17.0553
4/21/1999$17.4192
4/22/1999$21.6052
4/23/1999$21.5276
4/26/1999$20.4577
4/27/1999$20.0874
4/28/1999$19.652
4/29/1999$20.3794
4/30/1999$20.2009
5/3/1999$19.5421
5/4/1999$18.9579
5/5/1999$18.4614
5/6/1999$19.5536
5/7/1999$19.6927
5/10/1999$20.8474
5/11/1999$23.1819
5/12/1999$21.8928
5/13/1999$20.8147
5/14/1999$20.656
5/17/1999$19.667
5/18/1999$22.3881
5/19/1999$21.1942
5/20/1999$21.8264
5/21/1999$22.0227
5/24/1999$21.856
5/25/1999$20.7329
5/26/1999$19.2813
5/27/1999$18.9767
5/28/1999$18.5623
6/1/1999$19.2612
6/2/1999$19.6443
6/3/1999$19.4694
6/4/1999$19.5503
6/7/1999$19.2867
6/8/1999$19.1174
6/9/1999$19.338
6/10/1999$19.2094
6/11/1999$18.4393
6/14/1999$16.7874
6/15/1999$16.953
6/16/1999$17.4432
6/17/1999$17.2471
6/18/1999$17.4301
6/21/1999$16.6986
6/22/1999$17.8866
6/23/1999$18.0747
6/24/1999$18.0152
6/25/1999$17.7579
6/28/1999$17.2216
6/29/1999$18.3078
6/30/1999$20.0081
7/1/1999$18.6641
7/2/1999$17.9325
7/6/1999$17.5868
7/7/1999$18.2794
7/8/1999$17.7892
7/9/1999$18.0605
7/12/1999$17.9476
7/13/1999$17.4917
7/14/1999$17.5863
7/15/1999$18.2711
7/16/1999$17.8207
7/19/1999$17.5745
7/20/1999$17.4753
7/21/1999$17.2565
7/22/1999$17.0737
7/23/1999$16.0103
7/26/1999$15.8576
7/27/1999$15.8631
7/28/1999$15.7274
7/29/1999$15.4651
7/30/1999$15.497
8/2/1999$13.4061
8/3/1999$13.3644
8/4/1999$11.9769
8/5/1999$12.0012
8/6/1999$11.5409
8/9/1999$10.8419
8/10/1999$10.8468
8/11/1999$10.2917
8/12/1999$10.2952
8/13/1999$10.4829
8/16/1999$11.4396
8/17/1999$12.7763
8/18/1999$13.1004
8/19/1999$12.9572
8/20/1999$12.4665
8/23/1999$11.6295
8/24/1999$11.0013
8/25/1999$10.7014
8/26/1999$11.2087
8/27/1999$10.9861
8/30/1999$10.7638
8/31/1999$10.8993
9/1/1999$10.5637
9/2/1999$10.3969
9/3/1999$9.883
9/7/1999$10.2553
9/8/1999$10.064
9/9/1999$9.8559
9/10/1999$9.7346
9/13/1999$9.5397
9/14/1999$9.3652
9/15/1999$8.921
9/16/1999$8.7831
9/17/1999$8.3467
9/20/1999$8.4519
9/21/1999$8.4087
9/22/1999$8.3062
9/23/1999$8.3211
9/24/1999$8.0533
9/27/1999$8.1507
9/28/1999$9.0732
9/29/1999$8.5791
9/30/1999$8.8597
10/1/1999$8.7403
10/4/1999$8.7655
10/5/1999$8.4079
10/6/1999$7.8907
10/7/1999$8.2383
10/8/1999$8.3196
10/11/1999$7.9778
10/12/1999$7.7829
10/13/1999$7.5954
10/14/1999$7.1436
10/15/1999$6.9243
10/18/1999$6.479
10/19/1999$7.0621
10/20/1999$7.0926
10/21/1999$6.4162
10/22/1999$7.0002
10/25/1999$6.6355
10/26/1999$6.3165
10/27/1999$5.8039
10/28/1999$6.1566
10/29/1999$7.036
11/1/1999$8.7224
11/2/1999$8.6326
11/3/1999$8.0955
11/4/1999$7.6501
11/5/1999$6.8934
11/8/1999$6.8379
11/9/1999$7.0285
11/10/1999$6.7947
11/11/1999$6.375
11/12/1999$6.3053
11/15/1999$6.7669
11/16/1999$6.3564
11/17/1999$6.6377
11/18/1999$6.6319
11/19/1999$9.4073
11/22/1999$9.1617
11/23/1999$7.9896
11/24/1999$8.0202
11/26/1999$8.5781
11/29/1999$9.2454
11/30/1999$8.681
12/1/1999$8.15
12/2/1999$7.2355
12/3/1999$6.4733
12/6/1999$5.8989
12/7/1999$6.0245
12/8/1999$5.8873
12/9/1999$7.4005
12/10/1999$7.1489
12/13/1999$7.5093
12/14/1999$7.5653
12/15/1999$7.076
12/16/1999$6.7617
12/17/1999$7.0553
12/20/1999$7.0383
12/21/1999$6.9158
12/22/1999$6.4828
12/23/1999$6.4512
12/27/1999$5.8272
12/28/1999$5.511
12/29/1999$4.97
12/30/1999$5.4098
12/31/1999$4.9208
1/3/2000$4.4601
1/4/2000$5.099
1/5/2000$5.0899
1/6/2000$5.5437
1/7/2000$5.8992
1/10/2000$5.2488
1/11/2000$5.055
1/12/2000$4.8095
1/13/2000$7.3914
1/14/2000$5.9161
1/18/2000$5.6643
1/19/2000$6.6376
1/20/2000$10.1982
1/21/2000$9.0401
1/24/2000$9.5348
1/25/2000$8.9034
1/26/2000$8.1277
1/27/2000$8.3071
1/28/2000$7.288
1/31/2000$6.8622
2/1/2000$7.848
2/2/2000$9.2339
2/3/2000$10.6773
2/4/2000$10.1456
2/7/2000$9.2388
2/8/2000$8.082
2/9/2000$8.5045
2/10/2000$7.6535
2/11/2000$8.0084
2/14/2000$8.2315
2/15/2000$9.8946
2/16/2000$12.3552
2/17/2000$11.9215
2/18/2000$11.587
2/22/2000$13.3773
2/23/2000$12.2134
2/24/2000$11.0817
2/25/2000$11.9446
2/28/2000$11.904
2/29/2000$10.1089
3/1/2000$9.4619
3/2/2000$10.2511
3/3/2000$8.5214
3/6/2000$6.6874
3/7/2000$5.3685
3/8/2000$6.5189
3/9/2000$6.4956
3/10/2000$6.1826
3/13/2000$5.171
3/14/2000$4.0371
3/15/2000$3.3672
3/16/2000$3.8359
3/17/2000$3.0849
3/20/2000$3.406
3/21/2000$3.1531
3/22/2000$3.3523
3/23/2000$3.7478
3/24/2000$3.0233
3/27/2000$2.6555
3/28/2000$3.4977
3/29/2000$3.6831
3/30/2000$3.9231
3/31/2000$4.1282
4/3/2000$3.5045
4/4/2000$2.9547
4/5/2000$3.2168
4/6/2000$3.1731
4/7/2000$3.4645
4/10/2000$4.261
4/11/2000$4.1254
4/12/2000$4.8238
4/13/2000$4.3314
4/14/2000$3.8762
4/17/2000$2.7256
4/18/2000$2.4826
4/19/2000$2.7821
4/20/2000$3.0351
4/24/2000$3.1226
4/25/2000$2.6859
4/26/2000$2.5393
4/27/2000$1.849
4/28/2000$1.9035
5/1/2000$3.6986
5/2/2000$5.0999
5/3/2000$3.1048
5/4/2000$3.3138
5/5/2000$3.4869
5/8/2000$3.2857
5/9/2000$3.3656
5/10/2000$3.655
5/11/2000$3.2399
5/12/2000$3.058
5/15/2000$3.3545
5/16/2000$2.7632
5/17/2000$2.6909
5/18/2000$2.9189
5/19/2000$2.9595
5/22/2000$2.7184
5/23/2000$3.3079
5/24/2000$2.8084
5/25/2000$2.7592
5/26/2000$2.7768
5/30/2000$2.0173
5/31/2000$2.5698
6/1/2000$1.8184
6/2/2000$0.7451
6/5/2000$1.0059
6/6/2000$1.7208
6/7/2000$1.1578
6/8/2000$0.861
6/9/2000$0.6928
6/12/2000$0.5239
6/13/2000$0.5724
6/14/2000$0.6681
6/15/2000$0.3626
6/16/2000$0
6/19/2000$0
6/20/2000$0
6/21/2000$0
6/22/2000$0
6/23/2000$0
6/26/2000$0
6/27/2000$0
6/28/2000$0
6/29/2000$0
6/30/2000$0
7/3/2000$0
7/5/2000$0
7/6/2000$0
7/7/2000$0
7/10/2000$0
7/11/2000$0
7/12/2000$0
7/13/2000$0
7/14/2000$0
7/17/2000$0
7/18/2000$0
7/19/2000$0
7/20/2000$0
7/21/2000$0
7/24/2000$0
7/25/2000$0
7/26/2000$0
7/27/2000$0
7/28/2000$0
7/31/2000$0
8/1/2000$0
8/2/2000$0
8/3/2000$0
8/4/2000$0
8/7/2000$0
8/8/2000$0
8/9/2000$0
8/10/2000$0
8/11/2000$0
8/14/2000$0
8/15/2000$0
8/16/2000$0
8/17/2000$0
8/18/2000$0
8/21/2000$0
8/22/2000$0
8/23/2000$0
8/24/2000$0
8/25/2000$0
8/28/2000$0
8/29/2000$0
8/30/2000$0
8/31/2000$0
9/1/2000$0
9/5/2000$0
9/6/2000$0
9/7/2000$0
9/8/2000$0
9/11/2000$0
9/12/2000$0
9/13/2000$0
9/14/2000$0
9/15/2000$0
9/18/2000$0
9/19/2000$0
9/20/2000$0
9/21/2000$0
9/22/2000$0
9/25/2000$0
9/26/2000$0
9/27/2000$0
9/28/2000$0
9/29/2000$0
10/2/2000$0
10/3/2000$0
10/4/2000$0
10/5/2000$0
10/6/2000$0
10/9/2000$0
10/10/2000$0
10/11/2000$0
10/12/2000$0
10/13/2000$0
10/16/2000$0
10/17/2000$0
10/18/2000$0
10/19/2000$0
10/20/2000$0
10/23/2000$0
10/24/2000$0
10/25/2000$0
10/26/2000$0
10/27/2000$0
10/30/2000$0
10/31/2000$0
11/1/2000$0
11/2/2000$0
11/3/2000$0
11/6/2000$0
11/7/2000$0
11/8/2000$0
11/9/2000$0
11/10/2000$0
11/13/2000$0
11/14/2000$0
11/15/2000$0
11/16/2000$0
11/17/2000$0
11/20/2000$0
11/21/2000$0
11/22/2000$0.0386
11/24/2000$0
11/27/2000$0.0136
11/28/2000$0.1956
11/29/2000$0.2226
11/30/2000$0.3926
12/1/2000$0.3696
12/4/2000$0.2177
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 $16.00 per share have no artificial inflation.