Sonus Networks, Inc.

DateInflation Amount Per Share*
5/25/2000**$0***
5/26/2000$0
5/30/2000$0
5/31/2000$0
6/1/2000$0
6/2/2000$0
6/5/2000$0
6/6/2000$0
6/7/2000$0
6/8/2000$0
6/9/2000$0
6/12/2000$0.7049
6/13/2000$0
6/14/2000$0
6/15/2000$0
6/16/2000$0
6/19/2000$0.4696
6/20/2000$0.4081
6/21/2000$2.1279
6/22/2000$9.1975
6/23/2000$10.9442
6/26/2000$3.9332
6/27/2000$8.0541
6/28/2000$10.9502
6/29/2000$10.9365
6/30/2000$11.2245
7/3/2000$5.2946
7/5/2000$7.5881
7/6/2000$4.8853
7/7/2000$4.8501
7/10/2000$8.6012
7/11/2000$12.37
7/12/2000$12.37
7/13/2000$12.37
7/14/2000$12.37
7/17/2000$12.37
7/18/2000$12.37
7/19/2000$12.37
7/20/2000$12.37
7/21/2000$12.37
7/24/2000$12.37
7/25/2000$12.37
7/26/2000$12.37
7/27/2000$12.37
7/28/2000$12.37
7/31/2000$12.37
8/1/2000$12.37
8/2/2000$12.37
8/3/2000$12.37
8/4/2000$12.37
8/7/2000$12.37
8/8/2000$12.37
8/9/2000$12.37
8/10/2000$12.37
8/11/2000$12.37
8/14/2000$12.37
8/15/2000$12.37
8/16/2000$12.37
8/17/2000$12.37
8/18/2000$12.37
8/21/2000$12.37
8/22/2000$12.37
8/23/2000$7.0282
8/24/2000$11.6723
8/25/2000$11.6371
8/28/2000$12.3302
8/29/2000$12.3655
8/30/2000$11.7245
8/31/2000$11.1652
9/1/2000$9.5888
9/5/2000$7.5687
9/6/2000$9.5793
9/7/2000$9.6817
9/8/2000$7.8584
9/11/2000$2.4965
9/12/2000$1.8537
9/13/2000$2.4472
9/14/2000$3.4338
9/15/2000$3.0528
9/18/2000$1.9403
9/19/2000$6.02
9/20/2000$5.6654
9/21/2000$4.9874
9/22/2000$7.3374
9/25/2000$7.2109
9/26/2000$5.219
9/27/2000$2.1922
9/28/2000$3.0855
9/29/2000$4.172
10/2/2000$4.379
10/3/2000$7.3942
10/4/2000$9.3062
10/5/2000$10.8276
10/6/2000$5.259
10/9/2000$0.498
10/10/2000$1.068
10/11/2000$10.0063
10/12/2000$6.8155
10/13/2000$1.5676
10/16/2000$0
10/17/2000$0.1914
10/18/2000$0.6867
10/19/2000$0.9611
10/20/2000$0.7235
10/23/2000$1.0693
10/24/2000$2.1488
10/25/2000$0.9009
10/26/2000$1.3286
10/27/2000$0.9107
10/30/2000$0.2073
10/31/2000$0.0006
11/1/2000$2.759
11/2/2000$4.2076
11/3/2000$11.8849
11/6/2000$11.7131
11/7/2000$10.1095
11/8/2000$6.6591
11/9/2000$9.5392
11/10/2000$8.8096
11/13/2000$3.4438
11/14/2000$4.8513
11/15/2000$2.5619
11/16/2000$0.2172
11/17/2000$0
11/20/2000$0
11/21/2000$0
11/22/2000$0
11/24/2000$0
11/27/2000$0
11/28/2000$0
11/29/2000$0
11/30/2000$0
12/1/2000$0
12/4/2000$0
12/5/2000$0.0842
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 $23.00 per share have no artificial inflation.