Live feed17:03:05·126dINSIDERFilingvia QuantisnowChairman & CEO Stanton Thomas R covered exercise/tax liability with 31,944 shares, decreasing direct ownership by 3% to 939,905 units (SEC Form 4)ByQuantisnow·Wall Street's wire, on your screen.ADTN· ADTRAN Holdings Inc.UtilitiesOriginal source