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Insider selling
Haiping Dun sold $406K of ACM Research, Inc. (ACMR) stock
Haiping Dun, Dir of ACM Research, Inc. (ACMR), sold 5,000 shares of ACMR stock worth $406K, per an SEC Form 4 filed Aug 20, 2026.
The sale was pre-arranged (a 10b5-1 plan or an option exercise), not a fresh decision.
The trade happened on Aug 18, 2026, 2 days before it was made public.
ACMR has moved -10.2% since the trade date, from $84.37 to $75.80 (Sep 22, 2026 close).
- Traded
- Aug 18, 2026
- Disclosed
- Aug 20, 2026
- Filing delay
- 2 days
- Price since
- -10.2%
- Role
- Dir
- Source
- SEC Form 4
More ACMR insider and Congress trades
From a public SEC Form 4, linked above. Not investment advice, and not a recommendation to buy or sell.