Dun Haiping sold ACMR
August 18, 2026 · Form 4 insider transaction
Dun Haiping sold 400 shares of ACM Research, Inc. at $82.17 per share, a transaction worth $32.9K. 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
400
Price
$82.17
Total value
$32.9K
InsiderDun Haiping
RoleDirector
CompanyACM Research, Inc. (ACMR)
SecurityClass A Common Stock
Transaction codeS: Open-market sale
Transaction dateAugust 18, 2026
Filing dateAugust 20, 2026
Shares owned after0
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 $81.97 to $82.33, inclusive.