X0306 4 2015-08-12 0000088941 SEMTECH CORP SMTC 0001645461 Pegulu Marc 200 FLYNN ROAD CAMARILLO CA 93012-8790 0 1 0 0 Vice President Common Stock 2015-08-13 4 M 0 2125 0 A 5737 D Common Stock 2015-08-13 4 F 0 799 17.14 D 4938 D Common Stock 2015-08-14 4 M 0 750 0 A 5688 D Common Stock 2015-08-14 4 F 0 282 17.14 D 5406 D Common Stock 2015-08-15 4 M 0 900 0 A 6306 D Common Stock 2015-08-15 4 F 0 339 17.13 D 5967 D Common Stock 2015-08-17 4 M 0 750 0 A 6717 D Common Stock 2015-08-17 4 F 0 282 17.13 D 6435 D Stock Option (Right to Buy) 17.14 2015-08-12 4 A 0 7500 0 A 2021-08-12 Common Stock 7500 7500 D Restricted Stock Unit 2015-08-12 4 A 0 7500 0 A Common Stock 7500 7500 D Restricted Stock Unit 2015-08-13 4 M 0 2125 0 D Common Stock 2125 6375 D Restricted Stock Unit 2015-08-14 4 M 0 750 0 D Common Stock 750 1500 D Restricted Stock Unit 2015-08-15 4 M 0 900 0 D Common Stock 900 900 D Restricted Stock Unit 2015-08-17 4 M 0 750 0 D Common Stock 750 0 D This grant vests in four annual installments beginning on August 12, 2016. Each Restricted Stock Unit represents the contingent right to one share of the company's common stock. This grant vests in four annual installments beginning on August 13, 2015. This grant vests in four annual installments beginning on August 14, 2014. This grant vests in four annual installments beginning on August 15, 2013. This grant vests in four annual installments beginning on August 17, 2012. Marc Pegulu by Charles B. Ammann under Power of Attorney dated June 16, 2015 (Copy On File 2015-08-17