<SEC-DOCUMENT>0001193125-21-260858-index.html : 20210831 <SEC-HEADER>0001193125-21-260858.hdr.sgml : 20210831 <ACCEPTANCE-DATETIME>20210831085202 ACCESSION NUMBER: 0001193125-21-260858 CONFORMED SUBMISSION TYPE: 425 PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20210830 DATE AS OF CHANGE: 20210831 SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: ADTRAN INC CENTRAL INDEX KEY: 0000926282 STANDARD INDUSTRIAL CLASSIFICATION: TELEPHONE & TELEGRAPH APPARATUS [3661] IRS NUMBER: 630918200 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 425 SEC ACT: 1934 Act SEC FILE NUMBER: 000-24612 FILM NUMBER: 211225656 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 FILED BY: COMPANY DATA: COMPANY CONFORMED NAME: ACORN HOLDCO, INC. CENTRAL INDEX KEY: 0001880346 IRS NUMBER: 000000000 STATE OF INCORPORATION: DE FILING VALUES: FORM TYPE: 425 BUSINESS ADDRESS: STREET 1: 901 EXPLORER BOULEVARD CITY: HUNTSVILLE STATE: AL ZIP: 35806-2807 BUSINESS PHONE: 256-963-8000 MAIL ADDRESS: STREET 1: 901 EXPLORER BOULEVARD CITY: HUNTSVILLE STATE: AL ZIP: 35806-2807 </SEC-HEADER> <DOCUMENT> <TYPE>425 <SEQUENCE>1 <FILENAME>d210774d425.htm <DESCRIPTION>425 <TEXT> Document 1 - file: d210774d425.htm
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