RICHMOND DONALD P. II 4

What Happened
Donald P. Richmond II, Chief Technology Officer of Aehr Test Systems (AEHR), purchased 2,120 shares on 2026-04-01 at $6.67 each for about $14,146 via the company’s Employee Stock Purchase Plan. On 2026-04-02, 341 shares were reported as disposed at $44.32 each (about $15,113) to satisfy tax withholding obligations related to vested restricted stock units; the filing notes this withholding does not represent a sale by the reporting person.

Key Details

• Transactions: 2026-04-01 — acquired 2,120 shares @ $6.67 (code J); 2026-04-02 — 341 shares withheld/removed @ $44.32 (code F).
• Values: Purchase ≈ $14,146; withholding ≈ $15,113.
• Purchase method: ESPP (tax‑conditioned plan under IRC §423) — exempt from Section 16 short‑swing liability per footnote.
• Withholding: reported as a disposition but footnote clarifies shares were withheld to satisfy taxes on RSU vesting (not an open‑market sale).
• Shares owned after transaction: not specified in the filing; filing notes reported amounts include shares subject to unvested RSUs.
• Filing date: 2026-04-02 — filed contemporaneously (no indication of a late filing).

Context
ESPP purchases are regular employee purchases and are generally more informative about insider buying than one‑off sales. Withholding of shares to cover taxes on RSU vesting is routine and should not be interpreted as an open‑market sale by the insider.