144 0001389044 XXXXXXXX LIVE 0001040470 AEHR TEST SYSTEMS 000-22893 400 KATO TERRACE FREMONT CA 94539 5106239400 Siu Chris Officer Common Charles Schwab Corp.

3000 Schwab Way Westlake TX 76262

2070 213727.50 31453254 05/14/2026 NASDAQ Common 09/01/2023 Restricted Stock Units Issuer N 470 09/01/2023 N/A Common 04/01/2024 Employee Stock Purchase Plan Issuer N 1600 04/01/2024 N/A Y 05/14/2026 CHRIS SIU