Live feed16:30:32·104dINSIDERFilingvia QuantisnowDirector Pappis Charles C sold $250,450 worth of shares (5,000 units at $50.09) and exercised 5,000 shares at a strike of $29.18 (SEC Form 4)ByQuantisnow·Wall Street's wire, on your screen.ACMR· ACM Research Inc.TechnologyOriginal source