{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-22-190213","form_type":"8-K","ticker":"ADTN","cik":"0000926282","company_name":"ADTRAN Holdings, Inc.","filed_at":"2022-07-08T23:59:59+00:00","discovered_at":"2026-05-14T18:03:58.673678+00:00","generated_at":"2026-06-24T18:52:06.156374+00:00","sec_items":["2.01","3.01","3.03","5.01","5.02","5.03","7.01","9.01"],"event_type":"m_and_a","sentiment":"neutral","materiality_score":0.75,"calibrated_materiality_score":0.75,"confidence":"high","headline":"ADTRAN Holdings completes merger of ADTRAN; ADVA exchange offer to settle July 15","bullets":["Merger closed July 8, 2022; each ADTRAN share converted into one ADTRAN Holdings share (ADTN).","Exchange offer for ADVA at 0.8244 ratio; 65.43% of ADVA shares tendered; settlement expected July 15.","New board elected with Thomas Stanton as Chairman/CEO; Brian Protiva to become Vice Chairman post-exchange.","ADTN shares listed on Nasdaq (ADTN) and approved for Frankfurt Stock Exchange (QH9).","ADTRAN Holdings becomes successor issuer; prior ADTRAN shares to be delisted and deregistered."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-22-190213","json":"https://secwatch.observer/filing/0001193125-22-190213.json","markdown":"https://secwatch.observer/filing/0001193125-22-190213.md","text":"https://secwatch.observer/filing/0001193125-22-190213.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/926282/000119312522190213/0001193125-22-190213-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/926282/000119312522190213/d367038d8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-24T18:52:06.156374+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":[{"claim_id":"05146a5ca1","claim":"Jacqueline H. 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