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.
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.