Aehr Test Systems (AEHR) shares fell more than 13% on May 18, 2026.
A Wall Street Zen analyst downgraded the company to a strong sell rating.
SEC filings show that insiders sold approximately $41.8 million worth of shares over the last three months.
No insider purchases were reported during this period.
A broader market pullback and a correction after a significant one-year rally further pressured the stock.