X0306 4 2021-10-01 0001177394 SYNNEX CORP SNX 0001270710 POLK DENNIS 44201 NOBEL DRIVE FREMONT CA 94538 1 1 Executive Chair Common Stock 2021-10-01 4 M 0 2584 31.63 A 127743 D Common Stock 2021-10-01 4 M 0 1416 32.18 A 129159 D Common Stock 2021-10-01 4 S 0 200 107.31 D 128959 D Common Stock 2021-10-01 4 S 0 100 107.22 D 128859 D Common Stock 2021-10-01 4 S 0 100 107.20 D 128759 D Common Stock 2021-10-01 4 S 0 50 107.12 D 128709 D Common Stock 2021-10-01 4 S 0 1 107.10 D 128708 D Common Stock 2021-10-01 4 S 0 49 107.08 D 128659 D Common Stock 2021-10-01 4 S 0 100 107.05 D 128559 D Common Stock 2021-10-01 4 S 0 100 107.02 D 128459 D Common Stock 2021-10-01 4 S 0 100 106.96 D 128359 D Common Stock 2021-10-01 4 S 0 100 106.82 D 128259 D Common Stock 2021-10-01 4 S 0 100 106.77 D 128159 D Common Stock 2021-10-01 4 S 0 100 106.75 D 128059 D Common Stock 2021-10-01 4 S 0 100 106.74 D 127959 D Common Stock 2021-10-01 4 S 0 100 106.67 D 127859 D Common Stock 2021-10-01 4 S 0 100 106.65 D 127759 D Common Stock 2021-10-01 4 S 0 100 106.62 D 127659 D Common Stock 2021-10-01 4 S 0 100 106.585 D 127559 D Common Stock 2021-10-01 4 S 0 100 106.565 D 127459 D Common Stock 2021-10-01 4 S 0 200 106.55 D 127259 D Common Stock 2021-10-01 4 S 0 100 106.45 D 127159 D Common Stock 2021-10-01 4 S 0 100 106.255 D 127059 D Common Stock 2021-10-01 4 S 0 100 106.22 D 126959 D Common Stock 2021-10-01 4 S 0 100 106.15 D 126859 D Common Stock 2021-10-01 4 S 0 100 105.99 D 126759 D Common Stock 2021-10-01 4 S 0 100 105.91 D 126659 D Common Stock 2021-10-01 4 S 0 100 105.825 D 126559 D Common Stock 2021-10-01 4 S 0 100 105.80 D 126459 D Common Stock 2021-10-01 4 S 0 100 105.745 D 126359 D Stock Option (Right to Buy) 31.63 2021-10-01 4 M 0 2584 0 D 2023-10-03 Common Stock 2584 0 D Employee Stock Option (Right to Buy) 32.18 2021-10-01 4 M 0 1416 0 D 2024-10-07 Common Stock 1416 14098 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 2021-10-05