X0508 4 2025-10-01 0001040470 AEHR TEST SYSTEMS AEHR 0001389044 Siu Chris C/O AEHR TEST SYSTEMS 400 KATO TERRACE FREMONT CA 94539 true CFO false Common Stock 2025-10-01 4 J false 1009 6.6725 A 5211 I By Trust Common Stock 76229 D These shares have been purchased through the Company's Amended and Restated 2006 Employee Stock Purchase Plan, a "tax-conditioned plan" per Internal Revenue Code Section 423. This purchase is exempt from Section 16 of the Securities Exchange Act of 1934 regarding liabilities arising from six-month short-swing transactions in the Company's securities. The amount reported includes shares subject to unvested restricted stock units. /s/SIU CHRIS 2025-10-01