Pappis Charles C bought ACMR
April 17, 2026 · Form 4 insider transaction
Pappis Charles C bought 5,000 shares of ACM Research, Inc. at $29.18 per share, a transaction worth $145.9K. The trade was recorded as option exercise and disclosed on an SEC Form 4, filed 4 days after the transaction.
Direction
Acquired (buy-side)
Shares
5,000
Price
$29.18
Total value
$145.9K
InsiderPappis Charles C
RoleDirector
CompanyACM Research, Inc. (ACMR)
SecurityClass A Common Stock
Transaction codeM: Option exercise
Transaction dateApril 17, 2026
Filing dateApril 21, 2026
Shares owned after5,000
OwnershipDirect
10b5-1 planNo
AmendedNo
Footnotes
On April 17, 2026, the reporting person exercised a previously issued stock option to purchase 5,000 shares of Class A Common Stock of the Issuer.