Live feed16:05:28·254dSECFilingvia QuantisnowADTRAN Holdings Inc. filed SEC Form 8-K: Entry into a Material Definitive Agreement, Creation of a Direct Financial Obligation, Unregistered Sales of Equity Securities, Financial Statements and ExhibitsByQuantisnow·Wall Street's wire, on your screen.ADTN· ADTRAN Holdings Inc.UtilitiesOriginal source