Live feed16:50:52·1449dSECFilingvia QuantisnowSpok Holdings Inc. filed SEC Form 8-K: Entry into a Material Definitive Agreement, Termination of a Material Definitive Agreement, Material Modification to Rights of Security Holders, Financial Statements and ExhibitsByQuantisnow·Wall Street's wire, on your screen.SPOK· Spok Holdings Inc.TelecommunicationsOriginal source