Marketwatch.com, Inc.

DateInflation Amount Per Share*
1/15/1999**$86.251***
1/19/1999$85.6479
1/20/1999$68.9442
1/21/1999$71.5419
1/22/1999$77.0806
1/25/1999$69.5308
1/26/1999$66.4751
1/27/1999$65.9621
1/28/1999$67.8585
1/29/1999$65.8061
2/1/1999$61.6923
2/2/1999$68.8839
2/3/1999$70.3395
2/4/1999$70.3494
2/5/1999$66.1624
2/8/1999$65.366
2/9/1999$60.0124
2/10/1999$62.1151
2/11/1999$68.4634
2/12/1999$64.4622
2/16/1999$59.6024
2/17/1999$54.7051
2/18/1999$55.9898
2/19/1999$59.146
2/22/1999$60.6585
2/23/1999$61.9895
2/24/1999$60.0491
2/25/1999$66.0831
2/26/1999$62.6689
3/1/1999$62.1679
3/2/1999$59.2352
3/3/1999$59.1547
3/4/1999$58.9315
3/5/1999$60.0954
3/8/1999$58.7597
3/9/1999$65.7779
3/10/1999$65.5221
3/11/1999$64.0762
3/12/1999$64.3121
3/15/1999$70.4906
3/16/1999$67.2126
3/17/1999$65.2269
3/18/1999$65.4334
3/19/1999$62.6352
3/22/1999$64.4081
3/23/1999$63.0743
3/24/1999$63.3207
3/25/1999$64.9841
3/26/1999$63.3811
3/29/1999$66.3853
3/30/1999$70.4
3/31/1999$70.3038
4/1/1999$69.8788
4/5/1999$82.7929
4/6/1999$81.1581
4/7/1999$76.2533
4/8/1999$77.2152
4/9/1999$78.9563
4/12/1999$80.8623
4/13/1999$86.0099
4/14/1999$79.4852
4/15/1999$80.1706
4/16/1999$78.948
4/19/1999$61.6753
4/20/1999$59.7916
4/21/1999$66.8064
4/22/1999$68.1739
4/23/1999$71.0161
4/26/1999$73.9339
4/27/1999$72.2386
4/28/1999$69.9436
4/29/1999$68.8618
4/30/1999$68.0892
5/3/1999$65.45
5/4/1999$58.27
5/5/1999$63.3437
5/6/1999$60.6223
5/7/1999$58.8886
5/10/1999$59.8483
5/11/1999$61.2785
5/12/1999$62.9592
5/13/1999$56.791
5/14/1999$56.6323
5/17/1999$56.1472
5/18/1999$54.01
5/19/1999$52.2309
5/20/1999$49.2867
5/21/1999$46.9418
5/24/1999$45.9047
5/25/1999$44.636
5/26/1999$44.176
5/27/1999$47.3307
5/28/1999$48.2613
6/1/1999$49.3452
6/2/1999$48.6709
6/3/1999$48.9526
6/4/1999$48.2034
6/7/1999$52.27
6/8/1999$54.8568
6/9/1999$52.7916
6/10/1999$55.6869
6/11/1999$54.8871
6/14/1999$47.6155
6/15/1999$44.6429
6/16/1999$48.7305
6/17/1999$47.2005
6/18/1999$47.2972
6/21/1999$47.0745
6/22/1999$47.6539
6/23/1999$45.1277
6/24/1999$45.2081
6/25/1999$42.955
6/28/1999$41.887
6/29/1999$43.3178
6/30/1999$54.8691
7/1/1999$51.6424
7/2/1999$48.9725
7/6/1999$51.9218
7/7/1999$51.6476
7/8/1999$52.349
7/9/1999$50.8682
7/12/1999$49.1853
7/13/1999$47.0789
7/14/1999$46.2634
7/15/1999$47.1108
7/16/1999$46.704
7/19/1999$45.8834
7/20/1999$45.6775
7/21/1999$45.138
7/22/1999$43.8348
7/23/1999$41.9951
7/26/1999$39.2139
7/27/1999$38.4237
7/28/1999$36.9284
7/29/1999$38.0287
7/30/1999$35.6672
8/2/1999$31.6816
8/3/1999$28.0917
8/4/1999$23.4522
8/5/1999$26.2847
8/6/1999$27.7385
8/9/1999$24.26
8/10/1999$24.8148
8/11/1999$24.6241
8/12/1999$24.9283
8/13/1999$25.9835
8/16/1999$25.0902
8/17/1999$28.949
8/18/1999$31.4803
8/19/1999$29.2134
8/20/1999$28.5395
8/23/1999$28.5121
8/24/1999$27.521
8/25/1999$26.6342
8/26/1999$27.315
8/27/1999$28.0766
8/30/1999$26.516
8/31/1999$26.3427
9/1/1999$23.8327
9/2/1999$23.4667
9/3/1999$27.6775
9/7/1999$28.9264
9/8/1999$29.7274
9/9/1999$34.1661
9/10/1999$42.6149
9/13/1999$43.6909
9/14/1999$44.3934
9/15/1999$46.9963
9/16/1999$45.7409
9/17/1999$47.7873
9/20/1999$45.1903
9/21/1999$43.8662
9/22/1999$41.8229
9/23/1999$38.4875
9/24/1999$38.7929
9/27/1999$41.1917
9/28/1999$43.6236
9/29/1999$42.3658
9/30/1999$43.1021
10/1/1999$45.1675
10/4/1999$45.8226
10/5/1999$46.9908
10/6/1999$46.0558
10/7/1999$45.472
10/8/1999$45.7036
10/11/1999$45.6648
10/12/1999$45.7408
10/13/1999$44.0961
10/14/1999$47.3403
10/15/1999$45.3702
10/18/1999$42.6068
10/19/1999$42.0169
10/20/1999$45.3715
10/21/1999$55.4026
10/22/1999$53.3853
10/25/1999$54.6396
10/26/1999$58.0747
10/27/1999$54.346
10/28/1999$54.793
10/29/1999$48.1366
11/1/1999$43.3859
11/2/1999$44.7496
11/3/1999$45.6812
11/4/1999$48.7765
11/5/1999$45.9443
11/8/1999$45.3947
11/9/1999$45.4855
11/10/1999$46.5999
11/11/1999$45.0913
11/12/1999$44.4369
11/15/1999$41.2854
11/16/1999$43.9415
11/17/1999$43.6059
11/18/1999$46.0702
11/19/1999$47.2782
11/22/1999$45.0039
11/23/1999$43.6879
11/24/1999$42.9703
11/26/1999$43.567
11/29/1999$42.4865
11/30/1999$42.1175
12/1/1999$39.8647
12/2/1999$41.9029
12/3/1999$39.0423
12/6/1999$37.2347
12/7/1999$37.8333
12/8/1999$36.9178
12/9/1999$34.7354
12/10/1999$35.5831
12/13/1999$35.6758
12/14/1999$34.8049
12/15/1999$33.3289
12/16/1999$33.8213
12/17/1999$33.5369
12/20/1999$34.352
12/21/1999$32.9448
12/22/1999$32.9203
12/23/1999$32.0054
12/27/1999$31.9796
12/28/1999$32.2545
12/29/1999$33.1316
12/30/1999$32.1324
12/31/1999$30.6109
1/3/2000$34.2454
1/4/2000$36.8178
1/5/2000$38.6167
1/6/2000$34.8082
1/7/2000$35.3917
1/10/2000$34.8938
1/11/2000$34.6742
1/12/2000$34.0054
1/13/2000$34.7829
1/14/2000$34.2601
1/18/2000$33.1081
1/19/2000$33.8469
1/20/2000$35.2931
1/21/2000$33.0292
1/24/2000$32.9618
1/25/2000$32.9165
1/26/2000$33.2771
1/27/2000$33.9517
1/28/2000$33.0296
1/31/2000$32.5277
2/1/2000$31.5146
2/2/2000$32.2164
2/3/2000$33.5711
2/4/2000$33.7182
2/7/2000$33.8758
2/8/2000$38.7569
2/9/2000$34.9809
2/10/2000$36.4577
2/11/2000$37.5091
2/14/2000$36.6228
2/15/2000$37.336
2/16/2000$36.3456
2/17/2000$35.8403
2/18/2000$34.7923
2/22/2000$36.0327
2/23/2000$34.7068
2/24/2000$37.4735
2/25/2000$38.6989
2/28/2000$36.771
2/29/2000$36.4056
3/1/2000$37.3175
3/2/2000$37.3601
3/3/2000$38.2566
3/6/2000$36.3
3/7/2000$36.3144
3/8/2000$37.3344
3/9/2000$36.6136
3/10/2000$37.1135
3/13/2000$36.2403
3/14/2000$36.9742
3/15/2000$36.2119
3/16/2000$35.6127
3/17/2000$34.329
3/20/2000$29.5633
3/21/2000$29.1273
3/22/2000$31.4476
3/23/2000$32.6007
3/24/2000$30.8353
3/27/2000$29.6606
3/28/2000$29.9562
3/29/2000$30.6927
3/30/2000$27.8011
3/31/2000$27.8016
4/3/2000$25.6448
4/4/2000$23.3282
4/5/2000$23.629
4/6/2000$22.5946
4/7/2000$22.2853
4/10/2000$19.5948
4/11/2000$17.5252
4/12/2000$17.2385
4/13/2000$15.7842
4/14/2000$15.1263
4/17/2000$13.3185
4/18/2000$11.0315
4/19/2000$10.4606
4/20/2000$10.7381
4/24/2000$10.9333
4/25/2000$10.0287
4/26/2000$9.1251
4/27/2000$9.6262
4/28/2000$9.0083
5/1/2000$14.4839
5/2/2000$17.831
5/3/2000$18.4647
5/4/2000$18.974
5/5/2000$21.086
5/8/2000$19.9161
5/9/2000$18.5291
5/10/2000$17.7107
5/11/2000$16.3843
5/12/2000$16.3076
5/15/2000$20.3201
5/16/2000$19.1499
5/17/2000$18.001
5/18/2000$15.713
5/19/2000$17.852
5/22/2000$17.0069
5/23/2000$18.0687
5/24/2000$18.0095
5/25/2000$16.0313
5/26/2000$15.7887
5/30/2000$16.4154
5/31/2000$15.5165
6/1/2000$15.5021
6/2/2000$18.7027
6/5/2000$20.2488
6/6/2000$20.1157
6/7/2000$21.9205
6/8/2000$21.1784
6/9/2000$20.0168
6/12/2000$18.7942
6/13/2000$17.7322
6/14/2000$16.2676
6/15/2000$16.6132
6/16/2000$17.0485
6/19/2000$17.2187
6/20/2000$17.1961
6/21/2000$17.0016
6/22/2000$16.8977
6/23/2000$17.1474
6/26/2000$16.9427
6/27/2000$16.542
6/28/2000$14.2541
6/29/2000$13.3555
6/30/2000$12.6742
7/3/2000$13.0662
7/5/2000$11.9541
7/6/2000$11.3215
7/7/2000$14.2605
7/10/2000$16.1428
7/11/2000$14.9202
7/12/2000$14.739
7/13/2000$15.889
7/14/2000$17.1471
7/17/2000$16.7315
7/18/2000$18.3902
7/19/2000$15.7874
7/20/2000$14.9508
7/21/2000$14.7825
7/24/2000$13.9171
7/25/2000$11.0081
7/26/2000$10.279
7/27/2000$9.1417
7/28/2000$9.5179
7/31/2000$11.5012
8/1/2000$9.7274
8/2/2000$10.9993
8/3/2000$9.2513
8/4/2000$8.7945
8/7/2000$8.859
8/8/2000$8.6583
8/9/2000$8.3352
8/10/2000$7.2051
8/11/2000$6.113
8/14/2000$5.8633
8/15/2000$5.4085
8/16/2000$5.2691
8/17/2000$4.9006
8/18/2000$5.1483
8/21/2000$5.3183
8/22/2000$5.2499
8/23/2000$5.4085
8/24/2000$5.5279
8/25/2000$5.5648
8/28/2000$5.5752
8/29/2000$5.1204
8/30/2000$5.1416
8/31/2000$5.2051
9/1/2000$5.0588
9/5/2000$5.1909
9/6/2000$5.6223
9/7/2000$5.4229
9/8/2000$5.7282
9/11/2000$5.3003
9/12/2000$5.5068
9/13/2000$5.4621
9/14/2000$5.8682
9/15/2000$5.7856
9/18/2000$5.1563
9/19/2000$4.7493
9/20/2000$3.8323
9/21/2000$3.0074
9/22/2000$2.4335
9/25/2000$2.3064
9/26/2000$2.3646
9/27/2000$2.3596
9/28/2000$2.1688
9/29/2000$2.4058
10/2/2000$2.5357
10/3/2000$1.3899
10/4/2000$1.3872
10/5/2000$1.3553
10/6/2000$1.1027
10/9/2000$0.3027
10/10/2000$0.1744
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$0.0081
10/23/2000$0.1201
10/24/2000$0.4647
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$0.0116
11/6/2000$0.0749
11/7/2000$0.0635
11/8/2000$0.191
11/9/2000$0.1734
11/10/2000$0.0039
11/13/2000$0.219
11/14/2000$0.0463
11/15/2000$0.0316
11/16/2000$0
11/17/2000$0
11/20/2000$0
11/21/2000$0
11/22/2000$0
11/24/2000$0
11/27/2000$0.0836
11/28/2000$0.156
11/29/2000$0.1896
11/30/2000$0.2344
12/1/2000$0.2349
12/4/2000$0.2534
12/5/2000$0.0081
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.