Live feed18:30:23·352dINSIDERFilingvia QuantisnowDirector Gustafson Michael B bought $145,875 worth of shares (7,500 units at $19.45), increasing direct ownership by 33% to 30,074 units (SEC Form 4)ByQuantisnow·Wall Street's wire, on your screen.PDFS· PDF Solutions Inc.TechnologyOriginal source