<SEC-DOCUMENT>0001193125-23-209042-index.html : 20230810 <SEC-HEADER>0001193125-23-209042.hdr.sgml : 20230810 <ACCEPTANCE-DATETIME>20230810160928 ACCESSION NUMBER: 0001193125-23-209042 CONFORMED SUBMISSION TYPE: NT 10-Q PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20230630 FILED AS OF DATE: 20230810 DATE AS OF CHANGE: 20230810 EFFECTIVENESS DATE: 20230810 FILER: COMPANY DATA: COMPANY CONFORMED NAME: ADTRAN Holdings, Inc. CENTRAL INDEX KEY: 0000926282 STANDARD INDUSTRIAL CLASSIFICATION: TELEPHONE & TELEGRAPH APPARATUS [3661] IRS NUMBER: 872164282 FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: NT 10-Q SEC ACT: 1934 Act SEC FILE NUMBER: 001-41446 FILM NUMBER: 231159396 BUSINESS ADDRESS: STREET 1: 901 EXPLORER BLVD CITY: HUNTSVILLE STATE: AL ZIP: 35806 BUSINESS PHONE: 256-963-8220 MAIL ADDRESS: STREET 1: 901 EXPLORER BLVD CITY: HUNTSVILLE STATE: AL ZIP: 35806 FORMER COMPANY: FORMER CONFORMED NAME: ADTRAN INC DATE OF NAME CHANGE: 19940705 </SEC-HEADER> <DOCUMENT> <TYPE>NT 10-Q <SEQUENCE>1 <FILENAME>d445855dnt10q.htm <DESCRIPTION>NT 10-Q <TEXT> Document 1 - file: d445855dnt10q.htm
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