Live feed13:49:56·461dINSIDERFilingvia QuantisnowPresident and CEO Duff Mark bought $7,150 worth of shares (1,000 units at $7.15), increasing direct ownership by 0.77% to 131,609 units (SEC Form 4)ByQuantisnow·Wall Street's wire, on your screen.PESI· Perma-Fix Environmental Services Inc.IndustrialsOriginal source