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 S 0 4 126.90 D 126457 D Common Stock 2021-09-01 4 S 0 96 126.85 D 126361 D Common Stock 2021-09-01 4 S 0 100 126.84 D 126261 D Common Stock 2021-09-01 4 S 0 2 126.73 D 126259 D Common Stock 2021-09-01 4 S 0 100 126.66 D 126159 D Common Stock 2021-09-01 4 S 0 200 126.56 D 125959 D Common Stock 2021-09-01 4 S 0 18 126.49 D 125941 D Common Stock 2021-09-01 4 S 0 1 126.47 D 125940 D Common Stock 2021-09-01 4 S 0 9 126.45 D 125931 D Common Stock 2021-09-01 4 S 0 100 126.43 D 125831 D Common Stock 2021-09-01 4 S 0 72 126.41 D 125759 D Common Stock 2021-09-01 4 S 0 100 126.36 D 125659 D Common Stock 2021-09-01 4 S 0 100 126.31 D 125559 D Common Stock 2021-09-01 4 S 0 100 126.30 D 125459 D Common Stock 2021-09-01 4 S 0 100 126.235 D 125359 D Common Stock 2021-09-01 4 S 0 100 125.89 D 125259 D Common Stock 2021-09-01 4 S 0 100 125.61 D 125159 D These sales were effectuated pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on April 22,2021. /s/ Simon Y. Leung, Attorney-in-Fact 2021-09-03