{"schema_version":"secwatch.filing_event.v1","accession":"0000950170-25-077995","form_type":"8-K","ticker":"ADTN","cik":"0000926282","company_name":"ADTRAN Holdings, Inc.","filed_at":"2025-05-28T23:59:59+00:00","discovered_at":"2026-05-14T18:02:51.850785+00:00","generated_at":"2026-05-20T09:53:02.170848+00:00","sec_items":["2.02","9.01"],"event_type":"other_material","sentiment":"negative","materiality_score":0.75,"calibrated_materiality_score":0.75,"confidence":"low","headline":"ADTRAN Holdings restates 2024 and 2023 financials; updates Q1 2025 non-GAAP measures","bullets":["Restated consolidated financial statements for fiscal years 2024 and 2023 and interim periods in 2024.","Filed Q1 2025 Form 10-Q on May 20, providing final Q1 2025 financials.","Updated non-GAAP measures and investor presentation attached as exhibits to this 8-K.","Supersedes preliminary financial information from May 7, 2025 press release."],"urls":{"canonical":"https://secwatch.observer/filing/0000950170-25-077995","json":"https://secwatch.observer/filing/0000950170-25-077995.json","markdown":"https://secwatch.observer/filing/0000950170-25-077995.md","text":"https://secwatch.observer/filing/0000950170-25-077995.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/926282/000095017025077995/0000950170-25-077995-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/926282/000095017025077995/adtn-20250527.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-20T09:53:02.170848+00:00"},"review":{"review_status":"machine_generated","human_reviewed":false,"corrected":false,"correction_note":null,"correction_timestamp":null,"superseded_by":null,"related_filings":[]},"source_grounded_claims":[],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}