X0306 4 2021-09-01 0001177394 SYNNEX CORP SNX 0001270710 POLK DENNIS 44201 NOBEL DRIVE FREMONT CA 94538 1 1 Executive Chair Common Stock 2021-09-01 4 M 0 4000 31.63 A 129159 D Common Stock 2021-09-01 4 S 0 70 128.02 D 129089 D Common Stock 2021-09-01 4 S 0 30 128.01 D 129059 D Common Stock 2021-09-01 4 S 0 25 127.99 D 129034 D Common Stock 2021-09-01 4 S 0 75 127.95 D 128959 D Common Stock 2021-09-01 4 S 0 100 127.89 D 128859 D Common Stock 2021-09-01 4 S 0 16 127.88 D 128843 D Common Stock 2021-09-01 4 S 0 84 127.87 D 128759 D Common Stock 2021-09-01 4 S 0 100 127.75 D 128659 D Common Stock 2021-09-01 4 S 0 100 127.71 D 128559 D Common Stock 2021-09-01 4 S 0 102 127.68 D 128457 D Common Stock 2021-09-01 4 S 0 100 127.675 D 128357 D Common Stock 2021-09-01 4 S 0 100 127.65 D 128257 D Common Stock 2021-09-01 4 S 0 100 127.64 D 128157 D Common Stock 2021-09-01 4 S 0 100 127.61 D 128057 D Common Stock 2021-09-01 4 S 0 7 127.60 D 128050 D Common Stock 2021-09-01 4 S 0 93 127.59 D 127957 D Common Stock 2021-09-01 4 S 0 100 127.58 D 127857 D Common Stock 2021-09-01 4 S 0 100 127.57 D 127757 D Common Stock 2021-09-01 4 S 0 100 127.56 D 127657 D Common Stock 2021-09-01 4 S 0 100 127.55 D 127557 D Common Stock 2021-09-01 4 S 0 100 127.53 D 127457 D Common Stock 2021-09-01 4 S 0 200 127.42 D 127257 D Common Stock 2021-09-01 4 S 0 100 127.415 D 127157 D Common Stock 2021-09-01 4 S 0 96 127.41 D 127061 D Common Stock 2021-09-01 4 S 0 100 127.34 D 126961 D Common Stock 2021-09-01 4 S 0 100 127.26 D 126861 D Common Stock 2021-09-01 4 S 0 100 127.23 D 126761 D Common Stock 2021-09-01 4 S 0 200 127.07 D 126561 D Common Stock 2021-09-01 4 S 0 100 127.01 D 126461 D Stock Option (Right to Buy) 31.63 2021-09-01 4 M 0 4000 0 D 2023-10-03 Common Stock 4000 2584 D These sales were effectuated pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on April 22,2021. This stock option is immediately exercisable and is fully vested. /s/ Simon Y. Leung, Attorney-in-Fact 2021-09-03