X0303 4 2010-06-17 0000088941 SEMTECH CORP SMTC 0001189921 POHLMAN JEFFREY T 200 FLYNN ROAD CAMARILLO CA 93012-8790 0 1 0 0 Senior Vice President Common Stock 2010-06-17 4 S 0 200 17.805 D 142038 D Common Stock 2010-06-17 4 S 0 400 17.8125 D 141638 D Common Stock 2010-06-17 4 S 0 1100 17.8218 D 140538 D Common Stock 2010-06-17 4 S 0 300 17.83 D 140238 D Common Stock 2010-06-17 4 S 0 200 17.835 D 140038 D Common Stock 2010-06-17 4 S 0 200 17.84 D 139838 D Common Stock 2010-06-17 4 S 0 300 17.85 D 139538 D Common Stock 2010-06-17 4 S 0 200 17.8525 D 139338 D Common Stock 2010-06-17 4 S 0 200 17.86 D 139138 D Common Stock 2010-06-17 4 S 0 500 17.864 D 138638 D Common Stock 2010-06-17 4 S 0 200 17.865 D 138438 D Common Stock 2010-06-17 4 S 0 588 17.87 D 137850 D Common Stock 2010-06-17 4 S 0 600 17.8817 D 137250 D Common Stock 2010-06-17 4 S 0 200 17.89 D 137050 D Common Stock 2010-06-17 4 S 0 400 17.8975 D 136650 D Common Stock 2010-06-17 4 S 0 112 17.9054 D 136538 D Common Stock 2010-06-17 4 S 0 400 17.91 D 136138 D Common Stock 2010-06-17 4 S 0 34 17.92 D 136104 D Common Stock 2010-06-17 4 S 0 400 17.93 D 135704 D Common Stock 2010-06-17 4 S 0 508 17.94 D 135196 D Common Stock 2010-06-17 4 S 0 700 17.97 D 134496 D Common Stock 2010-06-17 4 S 0 100 18.00 D 134396 D Common Stock 2010-06-17 4 S 0 200 18.01 D 134196 D Common Stock 2010-06-17 4 S 0 180 18.02 D 134016 D Common Stock 2010-06-17 4 S 0 100 18.0225 D 133916 D Common Stock 2010-06-17 4 S 0 2 18.06 D 133914 D Common Stock 2010-06-17 4 S 0 1873 18.07 D 132041 D Common Stock 2010-06-17 4 S 0 200 18.12 D 131841 D Common Stock 2010-06-17 4 S 0 100 18.14 D 131741 D Jeffrey T. Pohlman 2010-06-17