{"schema_version":"secwatch.filing_event.v1","accession":"0000950170-25-070473","form_type":"8-K","ticker":"ADTN","cik":"0000926282","company_name":"ADTRAN Holdings, Inc.","filed_at":"2025-05-13T23:59:59+00:00","discovered_at":"2026-05-14T18:02:51.850375+00:00","generated_at":"2026-05-21T22:36:04.594080+00:00","sec_items":["4.02","8.01","9.01"],"event_type":"other_material","sentiment":"negative","materiality_score":0.85,"calibrated_materiality_score":0.85,"confidence":"high","headline":"ADTRAN Holdings restates FY23/FY24 results; €5.7M inventory error; annual meeting postponed","bullets":["Audit Committee concludes 2023 and 2024 annual and interim financials should no longer be relied upon due to inventory adjustment.","Subsidiary Adtran Networks SE's €5.7M increase in cost of goods sold was not properly communicated before filing.","At least one additional material weakness identified in internal controls; PwC opinions on prior periods withdrawn.","Annual meeting postponed from May 14, 2025 pending restatement; Form 12b-25 to be filed for Q1 10-Q extension."],"urls":{"canonical":"https://secwatch.observer/filing/0000950170-25-070473","json":"https://secwatch.observer/filing/0000950170-25-070473.json","markdown":"https://secwatch.observer/filing/0000950170-25-070473.md","text":"https://secwatch.observer/filing/0000950170-25-070473.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/926282/000095017025070473/0000950170-25-070473-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/926282/000095017025070473/adtn-20250513.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-21T22:36:04.594080+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"}