144 0001882831 XXXXXXXX LIVE 0001280263 AMBARELLA INC 001-35667 3101 JAY STREET SANTA CLARA CA 95054 408-734-8888 Ju Chi-Hong Officer COMMON ETRADE FINANCIAL CORPORATION

3 EDISON DRIVE ALPHARETTA GA 30005

4251 347793.46 38100000 07/07/2023 NASDAQ COMMON 06/15/2021 RESTRICTED STOCK ISSUER N 251 06/15/2021 COMPENSATION COMMON 03/15/2022 PERFORMANCE SHARES ISSUER N 4000 03/15/2022 COMPENSATION N CHIHONG J JU

3101 JAY STREET SANTA CLARA CA 95054

RESTRICTED STOCK 06/20/2023 1015 86071.29 CHIHONG J JU

3101 JAY STREET, SANTA CLARA CA 95054

PERFORMANCE AND RESTRICTED STOCK 06/08/2023 4165 344108.49 07/07/2023 /s/ Chi Hong John Ju