{"filing":{"accession_number":"0001193125-26-311290","cik":"0000926282","ticker":"ADTN","company_name":"ADTRAN Holdings, Inc.","form":"8-K","filing_date":"2026-07-22","report_date":null,"primary_document":"adtn-20260721.htm","primary_document_url":"https://www.sec.gov/Archives/edgar/data/926282/000119312526311290/adtn-20260721.htm"},"events":[{"id":19329,"run_id":17390,"accession_number":"0001193125-26-311290","anchor_item_number":"2.02","event_type":"earnings_release","event_domain":"financial","is_material":true,"confidence":0.94,"summary":"ADTRAN announced preliminary Q2 2026 financial results via press release on July 21, 2026, disclosing revenue of $280–282M and non-GAAP operating margin of 3.5–4.0%, both materially below prior guidance (revenue $283–303M; margin 5.0–9.0%). The company attributed the miss to a customer project delay and elevated component and freight costs.","company_name":"ADTRAN Holdings, Inc.","ticker":"ADTN","filing_date":"2026-07-22","form":"8-K","submitted_at":null,"items":[{"id":18390,"accession_number":"0001193125-26-311290","item_number":"2.02","item_title":"Results of Operations and Financial Condition.","event_type":"earnings_release","event_domain":"financial","is_material":true,"confidence":0.95,"reasoning":"ADTRAN announced preliminary financial results for Q2 2026 via press release on July 21, 2026, disclosing revenue, operating margins, and earnings per share. The disclosure explicitly states results fell below previously issued guidance (revenue $280–282M vs. guidance of $283–303M; non-GAAP operating margin 3.5–4.0% vs. guidance of 5.0–9.0%), and the company attributed the miss to a customer project delay and elevated component/freight costs. This is a classic earnings release under Item 2.02, material to investors assessing the company's financial performance and forward guidance.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-07-22T11:04:50.042214+00:00","company_name":"","ticker":null,"filing_date":""},{"id":18391,"accession_number":"0001193125-26-311290","item_number":"7.01","item_title":"Regulation FD Disclosure.","event_type":"earnings_release","event_domain":"financial","is_material":true,"confidence":0.92,"reasoning":"ADTRAN disclosed preliminary Q2 2026 financial results (revenue, operating margin, and EPS) via press release on July 21, 2026, in compliance with German ad hoc disclosure requirements under the Market Abuse Regulation. The disclosure explicitly states that results \"materially deviate from previously announced guidance,\" with revenue expected at $280.0–$282.0 million versus prior guidance of $283.0–$303.0 million, and non-GAAP operating margin of 3.5–4.0% versus prior guidance of 5.0–9.0%. This is a material earnings announcement affecting investor assessment of the company's financial performance.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-07-22T11:04:50.042214+00:00","company_name":"","ticker":null,"filing_date":""}]}],"classifications":[{"id":18390,"accession_number":"0001193125-26-311290","item_number":"2.02","item_title":"Results of Operations and Financial Condition.","event_type":"earnings_release","event_domain":"financial","is_material":true,"confidence":0.95,"reasoning":"ADTRAN announced preliminary financial results for Q2 2026 via press release on July 21, 2026, disclosing revenue, operating margins, and earnings per share. The disclosure explicitly states results fell below previously issued guidance (revenue $280–282M vs. guidance of $283–303M; non-GAAP operating margin 3.5–4.0% vs. guidance of 5.0–9.0%), and the company attributed the miss to a customer project delay and elevated component/freight costs. This is a classic earnings release under Item 2.02, material to investors assessing the company's financial performance and forward guidance.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-07-22T11:04:50.042214+00:00","company_name":"ADTRAN Holdings, Inc.","ticker":"ADTN","filing_date":"2026-07-22"},{"id":18391,"accession_number":"0001193125-26-311290","item_number":"7.01","item_title":"Regulation FD Disclosure.","event_type":"earnings_release","event_domain":"financial","is_material":true,"confidence":0.92,"reasoning":"ADTRAN disclosed preliminary Q2 2026 financial results (revenue, operating margin, and EPS) via press release on July 21, 2026, in compliance with German ad hoc disclosure requirements under the Market Abuse Regulation. The disclosure explicitly states that results \"materially deviate from previously announced guidance,\" with revenue expected at $280.0–$282.0 million versus prior guidance of $283.0–$303.0 million, and non-GAAP operating margin of 3.5–4.0% versus prior guidance of 5.0–9.0%. This is a material earnings announcement affecting investor assessment of the company's financial performance.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-07-22T11:04:50.042214+00:00","company_name":"ADTRAN Holdings, Inc.","ticker":"ADTN","filing_date":"2026-07-22"}]}