0001593968-21-000347 4 1 20210203 20210204 20210204 CHUKWU EMEKA 0001381846 4 34 001-06395 21591215 200 FLYNN ROAD CAMARILLO CA 93012-8790 SEMTECH CORP 0000088941 3674 952119684 DE 0126 200 FLYNN ROAD CAMARILLO CA 93012-8790 8054982111 200 FLYNN ROAD CAMARILLO CA 93012-8790 4 1 primary_01.xml PRIMARY DOCUMENT X0306 4 2021-02-03 0000088941 SEMTECH CORP SMTC 0001381846 CHUKWU EMEKA 200 FLYNN ROAD CAMARILLO CA 93012-8790 false true false false EVP and CFO Common Stock 2021-02-03 4 M false 3000 28.6 A 92005 D Common Stock 2021-02-03 4 S false 2222 70.8939 D 89783 D Common Stock 2021-02-03 4 S false 390 71.8788 D 89393 D Common Stock 2021-02-03 4 S false 296 73.7267 D 89097 D Common Stock 2021-02-03 4 S false 91 74.8305 D 89006 D Common Stock 2021-02-03 4 S false 1 76.225 D 89005 D Option (right to buy) 28.60 2021-02-03 4 M false 3000 0 D 2016-02-24 2021-02-24 SMTC 3000 3000 D This price represents the weighted average of these sales. The prices ranged from $70.5300 to $71.3200. Price and share details are available upon request. This price represents the weighted average of these sales. The prices ranged from $71.5500 to $72.3350. Price and share details are available upon request. This price represents the weighted average of these sales. The prices ranged from $73.4100 to $74.3200. Price and share details are available upon request. This price represents the weighted average of these sales. The prices ranged from $74.6600 to $75.4500. Price and share details are available upon request. These transactions are effected pursuant to a Rule 10b5-1 trading plan adopted by Mr. Chukwu on October 8, 2020. /s/Emeka Chukwu by Charles B. Ammann under Power of Attorney dated February 25, 2014 (Copy On File) 2021-02-04