Live feed15:54:43·596dINSIDERFilingvia QuantisnowChairman & CEO Stanton Thomas R covered exercise/tax liability with 3,748 shares, decreasing direct ownership by 0.46% to 810,976 units (SEC Form 4)ByQuantisnow·Wall Street's wire, on your screen.ADTN· ADTRAN Holdings Inc.UtilitiesOriginal source