{"url_path":"/sec/adtn/8-k/2026-05-18/item-9-01","section_key":"item-9-01","section_title":"Item 9.01 Financial Statements and Exhibits.","topic":"sec","document":{"doc_type":"8-K","doc_date":"2026-05-18","source_url":"https://www.sec.gov/Archives/edgar/data/926282/0001193125-26-228208-index.html","accession_number":"0001193125-26-228208","cik":"0000926282","ticker":"ADTN","issuer_name":"ADTRAN Holdings, Inc.","edgar_url":"https://www.sec.gov/Archives/edgar/data/926282/0001193125-26-228208-index.html","primary_entity_key":"0000926282","primary_entity_name":"ADTRAN Holdings, Inc."},"word_count":102,"has_tables":true,"body_markdown":"## Item 9.01 Financial Statements and Exhibits.\n\n(d) Exhibits\n\n \n\nExhibit Number\n\n \n\nDescription\n\n3.1\n\n[Certificate of Amendment to the Certificate of Incorporation of ADTRAN Holdings, Inc., effective as of May 13, 2026](adtn-ex3_1.htm)\n\n104\n\nCover Page Interactive Data File – the cover page iXBRL tags are embedded within the Inline XBRL document\n\n \n\nSIGNATURES\n\nPursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.\n\n \n\n \n\n \n\nADTRAN Holdings, Inc.\n\n \n\n \n\n \n\n \n\nDate:\n\nMay 18, 2026\n\nBy:\n\n/s/ Timothy Santo\n\n \n\n \n\n \n\nTimothy Santo\nSenior Vice President of Finance and\nChief Financial Officer"}