SOTHEARA CHEAV plan to sell securities of ACM RESEARCH, INC. under Form 144

SOTHEARA CHEAV filed Form 144 to notify SEC of plan to sell 5399 units of ACM RESEARCH, INC. securities around 2026-06-05, with aggregate market value of $449,079.64. The total outstanding units is 61233064.0. The amount planned to be sold represents 0.01% of total outstanding units; Recent transactions in past 3 months include: On 06/04/2026, sold 13351 units for $1136821.63;