Live feed16:25:06·1397dINSIDERFilingvia QuantisnowSEC Form 4: Whang Jong S exercised 50,000 units of Amtech Systems at a strike of $5.25 and sold $653,500 worth of Amtech Systems (50,000 units at $13.07)ByQuantisnow·Wall Street's wire, on your screen.ASYS· Amtech Systems Inc.TechnologyOriginal source