X0303 4 2010-03-25 0 0001131554 SYNCHRONOSS TECHNOLOGIES INC SNCR 0001363532 Irving Lawrence R. 750 ROUTE 202 SUITE 600 BRIDGEWATER NJ 08807 0 1 0 0 Chief Financial Officer Common Stock 2010-03-25 4 S 0 133 19.90 D 196184 D Common Stock 2010-03-25 4 S 0 200 19.95 D 195984 D Common Stock 2010-03-25 4 S 0 100 19.97 D 195884 D Common Stock 2010-03-25 4 S 0 100 20.09 D 195784 D Common Stock 2010-03-25 4 S 0 100 20.13 D 195684 D Common Stock 2010-03-25 4 S 0 100 20.18 D 195584 D Common Stock 2010-03-25 4 S 0 100 20.19 D 195484 D Common Stock 2010-03-25 4 S 0 500 20.20 D 194984 D Common Stock 2010-03-25 4 S 0 100 20.21 D 194884 D Common Stock 2010-03-25 4 S 0 600 20.22 D 194284 D Common Stock 2010-03-25 4 S 0 500 20.23 D 193784 D Common Stock 2010-03-25 4 S 0 300 20.24 D 193484 D Common Stock 2010-03-25 4 S 0 700 20.25 D 192784 D Common Stock 2010-03-25 4 S 0 364 20.26 D 192420 D Common Stock 2010-03-25 4 S 0 300 20.27 D 192120 D Common Stock 2010-03-25 4 S 0 429 20.28 D 191691 D Common Stock 2010-03-25 4 S 0 201 20.29 D 191490 D Common Stock 2010-03-25 4 S 0 100 20.30 D 191390 D Common Stock 2010-03-25 4 S 0 1506 20.31 D 189884 D Common Stock 2010-03-25 4 S 0 1000 20.32 D 188884 D Common Stock 2010-03-25 4 S 0 200 20.33 D 188684 D Common Stock 2010-03-25 4 S 0 240 20.34 D 188444 D Common Stock 2010-03-25 4 S 0 260 20.35 D 188184 D Common Stock 2010-03-25 4 S 0 200 20.36 D 187984 D Common Stock 2010-03-25 4 S 0 600 20.37 D 187384 D Common Stock 2010-03-25 4 S 0 100 20.39 D 187284 D Common Stock 2010-03-25 4 S 0 100 20.40 D 187184 D Common Stock 2010-03-25 4 S 0 100 20.41 D 187084 D Common Stock 2010-03-25 4 S 0 100 20.43 D 186984 D ***All of the sales reported in this Form were effected pursuant to an approved Rule 10b5-1 trading plan.*** /s/ Lawrence R. Irving 2010-03-29