Live feed09:42:15·458dINSIDERFilingvia QuantisnowPresident and CEO Duff Mark bought $14,417 worth of shares (2,050 units at $7.03), increasing direct ownership by 2% to 133,659 units (SEC Form 4)ByQuantisnow·Wall Street's wire, on your screen.PESI· Perma-Fix Environmental Services Inc.IndustrialsOriginal source