Live feed21:19:07·430dINSIDERFilingvia QuantisnowDirector Gustafson Michael B bought $92,240 worth of shares (4,000 units at $23.06), increasing direct ownership by 22% to 22,574 units (SEC Form 4)ByQuantisnow·Wall Street's wire, on your screen.PDFS· PDF Solutions Inc.TechnologyOriginal source