Live feed16:06:38·285dINSIDERFilingvia QuantisnowPresident and CEO Duff Mark bought $7,221 worth of shares (897 units at $8.05), increasing direct ownership by 0.67% to 134,556 units (SEC Form 4)ByQuantisnow·Wall Street's wire, on your screen.PESI· Perma-Fix Environmental Services Inc.IndustrialsOriginal source