IMPSAT Fiber Networks, Inc.

DateInflation Amount Per Share*
2/1/2000**$15.7092***
2/2/2000$15.7092
2/3/2000$15.7092
2/4/2000$15.7092
2/7/2000$15.7092
2/8/2000$15.7092
2/9/2000$15.7092
2/10/2000$15.7092
2/11/2000$15.7092
2/14/2000$15.7092
2/15/2000$15.7092
2/16/2000$15.7092
2/17/2000$15.7092
2/18/2000$15.7092
2/22/2000$15.7092
2/23/2000$15.7092
2/24/2000$15.7092
2/25/2000$15.7092
2/28/2000$15.7092
2/29/2000$15.7092
3/1/2000$15.7092
3/2/2000$15.7092
3/3/2000$15.7092
3/6/2000$15.7092
3/7/2000$15.7092
3/8/2000$15.7092
3/9/2000$15.7092
3/10/2000$15.7092
3/13/2000$15.7092
3/14/2000$15.5875
3/15/2000$14.4511
3/16/2000$15.2102
3/17/2000$14.9494
3/20/2000$14.9588
3/21/2000$14.8364
3/22/2000$14.6868
3/23/2000$14.7796
3/24/2000$15.7092
3/27/2000$15.0493
3/28/2000$14.7865
3/29/2000$14.5979
3/30/2000$14.5329
3/31/2000$14.5761
4/3/2000$14.2392
4/4/2000$13.4026
4/5/2000$11.5413
4/6/2000$10.8522
4/7/2000$11.8778
4/10/2000$11.1439
4/11/2000$9.9823
4/12/2000$7.2162
4/13/2000$6.6092
4/14/2000$6.0353
4/17/2000$4.7792
4/18/2000$7.7768
4/19/2000$6.6994
4/20/2000$7.4235
4/24/2000$6.5552
4/25/2000$6.1047
4/26/2000$4.5435
4/27/2000$5.9871
4/28/2000$7.8506
5/1/2000$6.6119
5/2/2000$7.2169
5/3/2000$5.8928
5/4/2000$5.155
5/5/2000$5.0986
5/8/2000$4.8682
5/9/2000$5.0168
5/10/2000$4.045
5/11/2000$3.9672
5/12/2000$3.1793
5/15/2000$3.0313
5/16/2000$2.1825
5/17/2000$2.3776
5/18/2000$2.3865
5/19/2000$2.652
5/22/2000$2.8164
5/23/2000$3.2055
5/24/2000$2.9013
5/25/2000$2.8878
5/26/2000$3.0225
5/30/2000$3.5316
5/31/2000$3.7896
6/1/2000$5.692
6/2/2000$6.3602
6/5/2000$7.276
6/6/2000$6.8667
6/7/2000$6.943
6/8/2000$6.4533
6/9/2000$6.7182
6/12/2000$7.1056
6/13/2000$7.0663
6/14/2000$8.8091
6/15/2000$8.3872
6/16/2000$8.0098
6/19/2000$7.5525
6/20/2000$7.5228
6/21/2000$7.5564
6/22/2000$8.268
6/23/2000$8.0571
6/26/2000$8.2023
6/27/2000$8.5198
6/28/2000$8.3885
6/29/2000$8.9282
6/30/2000$8.6608
7/3/2000$8.8363
7/5/2000$9.0584
7/6/2000$8.9457
7/7/2000$8.252
7/10/2000$7.4065
7/11/2000$6.1306
7/12/2000$4.6423
7/13/2000$6.1358
7/14/2000$6.232
7/17/2000$5.5537
7/18/2000$5.6373
7/19/2000$4.9559
7/20/2000$4.8842
7/21/2000$6.6994
7/24/2000$7.0634
7/25/2000$6.8109
7/26/2000$6.3592
7/27/2000$5.714
7/28/2000$4.9937
7/31/2000$4.5263
8/1/2000$4.8465
8/2/2000$5.1882
8/3/2000$4.9015
8/4/2000$5.1255
8/7/2000$4.7144
8/8/2000$5.3054
8/9/2000$5.4952
8/10/2000$5.9657
8/11/2000$6.1762
8/14/2000$6.5122
8/15/2000$6.5522
8/16/2000$6.8462
8/17/2000$6.8153
8/18/2000$6.8744
8/21/2000$7.0387
8/22/2000$8.2816
8/23/2000$8.4114
8/24/2000$7.7582
8/25/2000$8.1197
8/28/2000$7.8019
8/29/2000$7.7784
8/30/2000$7.6813
8/31/2000$6.894
9/1/2000$6.8659
9/5/2000$7.6647
9/6/2000$7.0902
9/7/2000$7.3475
9/8/2000$7.0846
9/11/2000$7.2622
9/12/2000$7.3693
9/13/2000$7.4976
9/14/2000$8.2686
9/15/2000$7.9072
9/18/2000$7.066
9/19/2000$6.9637
9/20/2000$6.6584
9/21/2000$5.9952
9/22/2000$6.2689
9/25/2000$4.7424
9/26/2000$3.8821
9/27/2000$4.2703
9/28/2000$4.5824
9/29/2000$3.6441
10/2/2000$3.732
10/3/2000$3.9518
10/4/2000$4.1589
10/5/2000$5.0474
10/6/2000$4.6923
10/9/2000$4.7082
10/10/2000$4.8753
10/11/2000$4.4014
10/12/2000$3.908
10/13/2000$4.0843
10/16/2000$3.7231
10/17/2000$3.5238
10/18/2000$3.559
10/19/2000$3.9887
10/20/2000$4.1884
10/23/2000$4.5302
10/24/2000$4.7372
10/25/2000$4.6544
10/26/2000$4.6554
10/27/2000$3.6804
10/30/2000$2.9487
10/31/2000$5.0109
11/1/2000$4.8948
11/2/2000$5.5147
11/3/2000$4.7715
11/6/2000$4.0306
11/7/2000$4.3349
11/8/2000$3.3899
11/9/2000$3.8246
11/10/2000$3.6961
11/13/2000$3.7121
11/14/2000$4.1004
11/15/2000$4.1621
11/16/2000$4.2202
11/17/2000$3.578
11/20/2000$3.6888
11/21/2000$4.3336
11/22/2000$4.9875
11/24/2000$4.5789
11/27/2000$4.5792
11/28/2000$4.1056
11/29/2000$2.6905
11/30/2000$2.391
12/1/2000$2.1529
12/4/2000$1.1044
12/5/2000$0.6329
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 $17.00 per share have no artificial inflation.