Dun Haiping sold ACMR
May 19, 2026 · Form 4 insider transaction
Dun Haiping sold 1,309 shares of ACM Research, Inc. at $67.21 per share, a transaction worth $88.0K. The trade was recorded as open-market sale under a pre-scheduled Rule 10b5-1 plan and disclosed on an SEC Form 4, filed 2 days after the transaction.
Direction
Disposed (sell-side)
Shares
1,309
Price
$67.21
Total value
$88.0K
InsiderDun Haiping
RoleDirector
CompanyACM Research, Inc. (ACMR)
SecurityClass A Common Stock
Transaction codeS: Open-market sale
Transaction dateMay 19, 2026
Filing dateMay 21, 2026
Shares owned after1,858
OwnershipDirect
10b5-1 planYes
AmendedNo
Footnotes
The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 13, 2025.; The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $66.41 to $67.37, inclusive.