{"filing":{"accession_number":"0001193125-26-283882","cik":"0000926282","ticker":"ADTN","company_name":"ADTRAN Holdings, Inc.","form":"8-K","filing_date":"2026-06-26","report_date":null,"primary_document":"adtn-20260623.htm","primary_document_url":"https://www.sec.gov/Archives/edgar/data/926282/000119312526283882/adtn-20260623.htm"},"events":[{"id":14101,"run_id":12540,"accession_number":"0001193125-26-283882","anchor_item_number":"5.02","event_type":"exec_appointment","event_domain":"governance","is_material":true,"confidence":0.95,"summary":"The Board unanimously elected Anne DelSanto as an independent director effective July 1, 2026, increasing the Board size from six to seven members. Ms. DelSanto, with 30+ years of technology industry experience in cloud computing, SaaS, and AI, was also appointed to the Compensation Committee, strengthening the Board's expertise in areas aligned with the Company's strategic direction.","company_name":"ADTRAN Holdings, Inc.","ticker":"ADTN","filing_date":"2026-06-26","form":"8-K","submitted_at":null,"items":[{"id":11435,"accession_number":"0001193125-26-283882","item_number":"5.02","item_title":"Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.","event_type":"exec_appointment","event_domain":"governance","is_material":true,"confidence":0.95,"reasoning":"The Board unanimously voted to elect Anne DelSanto as a director effective July 1, 2026, increasing the Board size from six to seven members. Ms. DelSanto was also appointed to the Compensation Committee. This is a clear executive appointment of a director with relevant expertise in cloud computing, AI, and SaaS—areas aligned with the Company's strategic direction, as emphasized in the press release. The appointment of a new independent director to the Board and a Board committee is a material governance event affecting the composition and oversight of the Company.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-06-26T11:03:39.613411+00:00","company_name":"","ticker":null,"filing_date":""},{"id":11436,"accession_number":"0001193125-26-283882","item_number":"8.01","item_title":"Other Events.","event_type":"exec_appointment","event_domain":"governance","is_material":true,"confidence":0.95,"reasoning":"The filing discloses the appointment of Anne DelSanto as an independent member of Adtran's Board of Directors effective July 1, 2026. The press release emphasizes her 30+ years of technology industry experience in cloud computing, SaaS, and AI—areas aligned with the company's strategic direction. Board appointments of experienced independent directors with relevant expertise are material governance events affecting the composition and oversight of the registrant.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-06-26T11:03:39.613411+00:00","company_name":"","ticker":null,"filing_date":""}]}],"classifications":[{"id":11435,"accession_number":"0001193125-26-283882","item_number":"5.02","item_title":"Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.","event_type":"exec_appointment","event_domain":"governance","is_material":true,"confidence":0.95,"reasoning":"The Board unanimously voted to elect Anne DelSanto as a director effective July 1, 2026, increasing the Board size from six to seven members. Ms. DelSanto was also appointed to the Compensation Committee. This is a clear executive appointment of a director with relevant expertise in cloud computing, AI, and SaaS—areas aligned with the Company's strategic direction, as emphasized in the press release. The appointment of a new independent director to the Board and a Board committee is a material governance event affecting the composition and oversight of the Company.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-06-26T11:03:39.613411+00:00","company_name":"ADTRAN Holdings, Inc.","ticker":"ADTN","filing_date":"2026-06-26"},{"id":11436,"accession_number":"0001193125-26-283882","item_number":"8.01","item_title":"Other Events.","event_type":"exec_appointment","event_domain":"governance","is_material":true,"confidence":0.95,"reasoning":"The filing discloses the appointment of Anne DelSanto as an independent member of Adtran's Board of Directors effective July 1, 2026. The press release emphasizes her 30+ years of technology industry experience in cloud computing, SaaS, and AI—areas aligned with the company's strategic direction. Board appointments of experienced independent directors with relevant expertise are material governance events affecting the composition and oversight of the registrant.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-06-26T11:03:39.613411+00:00","company_name":"ADTRAN Holdings, Inc.","ticker":"ADTN","filing_date":"2026-06-26"}]}