AlphaYouHD
Insider selling
Haiping Dun sold $213K of ACM Research, Inc. (ACMR) stock
Haiping Dun, Dir of ACM Research, Inc. (ACMR), sold 5,000 shares of ACMR stock worth $213K, per an SEC Form 4 filed May 21, 2026.
The sale was pre-arranged (a 10b5-1 plan or an option exercise), not a fresh decision.
The trade happened on May 19, 2026, 2 days before it was made public.
ACMR has moved +9.5% since the trade date, from $66.45 to $72.77 (Sep 21, 2026 close).
- Traded
- May 19, 2026
- Disclosed
- May 21, 2026
- Filing delay
- 2 days
- Price since
- +9.5%
- 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.