Turnstone Systems, Inc.

DateInflation Amount Per Share*
2/1/2000**$71.7258***
2/2/2000$71.7258
2/3/2000$71.7258
2/4/2000$71.7258
2/7/2000$71.7258
2/8/2000$71.7258
2/9/2000$71.7258
2/10/2000$71.7258
2/11/2000$71.7258
2/14/2000$71.7258
2/15/2000$71.7258
2/16/2000$71.7258
2/17/2000$71.7258
2/18/2000$71.7258
2/22/2000$71.7258
2/23/2000$71.7258
2/24/2000$71.7258
2/25/2000$71.7258
2/28/2000$71.7258
2/29/2000$71.7258
3/1/2000$71.7258
3/2/2000$71.7258
3/3/2000$71.7258
3/6/2000$71.7258
3/7/2000$71.7258
3/8/2000$71.7258
3/9/2000$71.7258
3/10/2000$71.7258
3/13/2000$71.7258
3/14/2000$71.7258
3/15/2000$71.7258
3/16/2000$71.7258
3/17/2000$71.7258
3/20/2000$71.7258
3/21/2000$71.7258
3/22/2000$71.7258
3/23/2000$71.7258
3/24/2000$71.7258
3/27/2000$71.7258
3/28/2000$71.7258
3/29/2000$71.7258
3/30/2000$71.7258
3/31/2000$71.7258
4/3/2000$68.562
4/4/2000$65.9664
4/5/2000$61.4705
4/6/2000$63.3387
4/7/2000$71.3217
4/10/2000$71.7258
4/11/2000$71.7258
4/12/2000$66.8354
4/13/2000$56.2433
4/14/2000$40.3397
4/17/2000$37.1012
4/18/2000$44.1971
4/19/2000$61.3235
4/20/2000$58.8479
4/24/2000$48.3999
4/25/2000$71.7258
4/26/2000$71.7258
4/27/2000$71.7258
4/28/2000$71.7258
5/1/2000$71.7258
5/2/2000$71.7258
5/3/2000$70.6472
5/4/2000$71.487
5/5/2000$71.7258
5/8/2000$71.7258
5/9/2000$71.1141
5/10/2000$69.6785
5/11/2000$71.6425
5/12/2000$69.9904
5/15/2000$67.3132
5/16/2000$68.5451
5/17/2000$68.4544
5/18/2000$68.1266
5/19/2000$67.0072
5/22/2000$66.3044
5/23/2000$65.8838
5/24/2000$65.7186
5/25/2000$66.3521
5/26/2000$67.9263
5/30/2000$70.4503
5/31/2000$67.599
6/1/2000$67.9481
6/2/2000$71.4876
6/5/2000$71.7258
6/6/2000$71.7258
6/7/2000$71.7258
6/8/2000$71.7258
6/9/2000$71.7258
6/12/2000$71.7258
6/13/2000$71.7258
6/14/2000$71.7258
6/15/2000$71.7258
6/16/2000$71.7258
6/19/2000$71.7258
6/20/2000$71.7258
6/21/2000$71.7258
6/22/2000$71.7258
6/23/2000$71.7258
6/26/2000$71.7258
6/27/2000$71.7258
6/28/2000$71.7258
6/29/2000$71.7258
6/30/2000$71.7258
7/3/2000$71.7258
7/5/2000$71.7258
7/6/2000$71.7258
7/7/2000$71.7258
7/10/2000$71.7258
7/11/2000$71.7258
7/12/2000$71.7258
7/13/2000$71.7258
7/14/2000$71.7258
7/17/2000$71.7258
7/18/2000$71.7258
7/19/2000$71.7258
7/20/2000$71.7258
7/21/2000$71.7258
7/24/2000$71.7258
7/25/2000$71.7258
7/26/2000$71.7258
7/27/2000$71.7258
7/28/2000$71.7258
7/31/2000$71.7258
8/1/2000$71.7258
8/2/2000$71.7258
8/3/2000$71.7258
8/4/2000$71.7258
8/7/2000$71.7258
8/8/2000$71.7258
8/9/2000$71.7258
8/10/2000$71.7258
8/11/2000$71.7258
8/14/2000$71.7258
8/15/2000$71.7258
8/16/2000$71.7258
8/17/2000$71.7258
8/18/2000$71.7258
8/21/2000$71.7258
8/22/2000$71.7258
8/23/2000$71.7258
8/24/2000$71.7258
8/25/2000$71.7258
8/28/2000$71.7258
8/29/2000$71.7258
8/30/2000$71.7258
8/31/2000$71.7258
9/1/2000$71.7258
9/5/2000$71.7258
9/6/2000$71.7258
9/7/2000$71.7258
9/8/2000$71.7258
9/11/2000$71.7258
9/12/2000$71.7258
9/13/2000$71.7258
9/14/2000$71.7258
9/15/2000$71.7258
9/18/2000$71.7258
9/19/2000$71.7258
9/20/2000$71.7258
9/21/2000$71.6779
9/22/2000$71.7258
9/25/2000$71.7258
9/26/2000$71.6854
9/27/2000$69
9/28/2000$71.6348
9/29/2000$69.8227
10/2/2000$66.6156
10/3/2000$70.1914
10/4/2000$71.0537
10/5/2000$66.7619
10/6/2000$63.488
10/9/2000$68.2237
10/10/2000$67.4994
10/11/2000$68.6804
10/12/2000$66.1623
10/13/2000$66.988
10/16/2000$60.5126
10/17/2000$59.4336
10/18/2000$26.2948
10/19/2000$28.577
10/20/2000$24.1201
10/23/2000$25.5022
10/24/2000$25.3494
10/25/2000$22.198
10/26/2000$23.1509
10/27/2000$19.0623
10/30/2000$18.0046
10/31/2000$25.7553
11/1/2000$29.0526
11/2/2000$37.9638
11/3/2000$41.8316
11/6/2000$3.7531
11/7/2000$5.8595
11/8/2000$7.4889
11/9/2000$8.3189
11/10/2000$7.522
11/13/2000$6.9612
11/14/2000$7.7196
11/15/2000$5.3179
11/16/2000$4.1552
11/17/2000$4.239
11/20/2000$1.6788
11/21/2000$0.1433
11/22/2000$0
11/24/2000$0.5761
11/27/2000$0
11/28/2000$0.0596
11/29/2000$0.0005
11/30/2000$0
12/1/2000$0
12/4/2000$0
12/5/2000$0.0933
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 $29.00 per share have no artificial inflation.