Live feed16:00:03·196dINSIDERFilingvia QuantisnowChairman & CEO Stanton Thomas R covered exercise/tax liability with 3,355 shares, decreasing direct ownership by 0.36% to 941,168 units (SEC Form 4)ByQuantisnow·Wall Street's wire, on your screen.ADTN· ADTRAN Holdings Inc.UtilitiesOriginal source