Trade Summary

6 days ago, Dun Haiping, serving as Dir at Acm Research, Inc. (ACMR), sold 5,000 shares at $66.22 per share, for a total transaction value of $331,111.00. Following this transaction, Dun Haiping now holds 855,090 shares of ACMR.

This sale represents a 1.00% decrease in Dun Haiping's stake in the company. This is considered a medium-conviction trade.

The trade was executed on Tuesday, May 19, 2026 and publicly disclosed via SEC Form 4 filing on Thursday, May 21, 2026 at 4:30 PM ET, 2 days after the trade was made.

Acm Research, Inc. operates in the TECHNOLOGY sector, specifically within the SEMICONDUCTOR EQUIPMENT & MATERIALS industry. Insider selling activity in this sector can provide valuable signals about industry trends and company-specific developments.