Mediaplex, Inc.

DateInflation Amount Per Share*
11/19/1999**$21.6502***
11/22/1999$21.6502
11/23/1999$21.6501
11/24/1999$21.6502
11/26/1999$21.6502
11/29/1999$21.6502
11/30/1999$21.6502
12/1/1999$21.6502
12/2/1999$21.6502
12/3/1999$21.6502
12/6/1999$21.6502
12/7/1999$21.6502
12/8/1999$21.6502
12/9/1999$21.6502
12/10/1999$21.6502
12/13/1999$21.6502
12/14/1999$21.6502
12/15/1999$21.6502
12/16/1999$21.6502
12/17/1999$21.6502
12/20/1999$21.6502
12/21/1999$21.6502
12/22/1999$21.6502
12/23/1999$21.6502
12/27/1999$21.6502
12/28/1999$21.6502
12/29/1999$21.6502
12/30/1999$21.6502
12/31/1999$21.6502
1/3/2000$21.6502
1/4/2000$21.6502
1/5/2000$21.6502
1/6/2000$21.6502
1/7/2000$21.6502
1/10/2000$21.6502
1/11/2000$21.6502
1/12/2000$21.6502
1/13/2000$21.6502
1/14/2000$21.6502
1/18/2000$21.6502
1/19/2000$21.6502
1/20/2000$21.6502
1/21/2000$21.6502
1/24/2000$21.6502
1/25/2000$21.6502
1/26/2000$21.6502
1/27/2000$21.6502
1/28/2000$21.6502
1/31/2000$21.6502
2/1/2000$21.6502
2/2/2000$21.6502
2/3/2000$21.6502
2/4/2000$21.6502
2/7/2000$21.6502
2/8/2000$21.6502
2/9/2000$21.6502
2/10/2000$21.6502
2/11/2000$21.6502
2/14/2000$21.6502
2/15/2000$21.6502
2/16/2000$21.6502
2/17/2000$21.6502
2/18/2000$21.6502
2/22/2000$21.6502
2/23/2000$21.6502
2/24/2000$21.6502
2/25/2000$21.6502
2/28/2000$21.6502
2/29/2000$21.6502
3/1/2000$21.6502
3/2/2000$21.6502
3/3/2000$21.6502
3/6/2000$21.6502
3/7/2000$21.6502
3/8/2000$21.6502
3/9/2000$21.6502
3/10/2000$21.6502
3/13/2000$21.6502
3/14/2000$21.6502
3/15/2000$21.6502
3/16/2000$21.6502
3/17/2000$21.6502
3/20/2000$21.6502
3/21/2000$21.6502
3/22/2000$21.6502
3/23/2000$21.6502
3/24/2000$21.6502
3/27/2000$21.6502
3/28/2000$21.6502
3/29/2000$21.6502
3/30/2000$21.6502
3/31/2000$21.6502
4/3/2000$21.6502
4/4/2000$21.6502
4/5/2000$21.6502
4/6/2000$21.6502
4/7/2000$21.6502
4/10/2000$21.6502
4/11/2000$21.6502
4/12/2000$21.6502
4/13/2000$21.6502
4/14/2000$21.6502
4/17/2000$21.6502
4/18/2000$21.6502
4/19/2000$21.6502
4/20/2000$21.6502
4/24/2000$21.6502
4/25/2000$21.6502
4/26/2000$21.6502
4/27/2000$21.6502
4/28/2000$21.6502
5/1/2000$21.6502
5/2/2000$21.6502
5/3/2000$21.6502
5/4/2000$21.6502
5/5/2000$21.6502
5/8/2000$21.6502
5/9/2000$21.6502
5/10/2000$21.6502
5/11/2000$21.6502
5/12/2000$21.6502
5/15/2000$21.6502
5/16/2000$21.6502
5/17/2000$21.6502
5/18/2000$19.5706
5/19/2000$18.1587
5/22/2000$19.0065
5/23/2000$16.788
5/24/2000$16.4207
5/25/2000$13.9909
5/26/2000$14.8048
5/30/2000$13.3982
5/31/2000$13.9238
6/1/2000$15.7084
6/2/2000$18.8265
6/5/2000$18.3243
6/6/2000$16.2921
6/7/2000$17.2599
6/8/2000$17.5424
6/9/2000$18.3503
6/12/2000$17.0256
6/13/2000$16.5097
6/14/2000$14.9844
6/15/2000$12.524
6/16/2000$16.2293
6/19/2000$14.2217
6/20/2000$16.0755
6/21/2000$17.5667
6/22/2000$16.1555
6/23/2000$15.8898
6/26/2000$15.8172
6/27/2000$14.9126
6/28/2000$15.7547
6/29/2000$16.0175
6/30/2000$16.6589
7/3/2000$16.1842
7/5/2000$15.8425
7/6/2000$16.4197
7/7/2000$17.935
7/10/2000$16.9129
7/11/2000$16.3849
7/12/2000$16.3619
7/13/2000$16.7242
7/14/2000$16.5219
7/17/2000$17.3293
7/18/2000$16.7559
7/19/2000$16.5555
7/20/2000$13.5132
7/21/2000$10.9248
7/24/2000$8.8339
7/25/2000$8.4974
7/26/2000$6.9866
7/27/2000$7.3749
7/28/2000$6.9228
7/31/2000$7.5749
8/1/2000$6.2876
8/2/2000$5.4811
8/3/2000$5.7619
8/4/2000$5.7569
8/7/2000$5.9139
8/8/2000$5.5974
8/9/2000$5.3449
8/10/2000$4.8752
8/11/2000$5.8676
8/14/2000$5.649
8/15/2000$5.9258
8/16/2000$6.2341
8/17/2000$6.0171
8/18/2000$5.9855
8/21/2000$6.1059
8/22/2000$5.9166
8/23/2000$6.0814
8/24/2000$6.376
8/25/2000$9.8854
8/28/2000$9.8723
8/29/2000$9.3058
8/30/2000$9.0612
8/31/2000$11.0299
9/1/2000$11.2745
9/5/2000$11.808
9/6/2000$10.9159
9/7/2000$10.5061
9/8/2000$9.1768
9/11/2000$8.836
9/12/2000$8.5447
9/13/2000$8.2203
9/14/2000$8.6503
9/15/2000$7.989
9/18/2000$6.7696
9/19/2000$4.7768
9/20/2000$3.5162
9/21/2000$2.9038
9/22/2000$2.6985
9/25/2000$2.7916
9/26/2000$3.1194
9/27/2000$2.8211
9/28/2000$3.0857
9/29/2000$2.7078
10/2/2000$2.4747
10/3/2000$2.642
10/4/2000$2.3597
10/5/2000$2.1643
10/6/2000$1.8523
10/9/2000$1.9174
10/10/2000$1.8367
10/11/2000$1.7098
10/12/2000$1.4661
10/13/2000$1.4297
10/16/2000$1.6943
10/17/2000$1.6032
10/18/2000$1.4351
10/19/2000$1.3991
10/20/2000$1.5655
10/23/2000$1.6331
10/24/2000$1.192
10/25/2000$1.3852
10/26/2000$1.1434
10/27/2000$1.0732
10/30/2000$0.9327
10/31/2000$0.8094
11/1/2000$0.7303
11/2/2000$0.9741
11/3/2000$0.6194
11/6/2000$0.6021
11/7/2000$0.3197
11/8/2000$0.4524
11/9/2000$0.4329
11/10/2000$0.3485
11/13/2000$0.0507
11/14/2000$0.106
11/15/2000$0.0938
11/16/2000$0.079
11/17/2000$0.0757
11/20/2000$0.1831
11/21/2000$0.1249
11/22/2000$0.0727
11/24/2000$0.0493
11/27/2000$0.1861
11/28/2000$0.1773
11/29/2000$0.1557
11/30/2000$0.1693
12/1/2000$0.0915
12/4/2000$0.0883
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 $12.00 per share have no artificial inflation.