{"schema_version":"secwatch.filing_event.v1","accession":"0000950170-21-001615","form_type":"8-K","ticker":"ADTN","cik":"0000926282","company_name":"ADTRAN Holdings, Inc.","filed_at":"2021-09-01T23:59:59+00:00","discovered_at":"2026-05-14T18:04:21.306877+00:00","generated_at":"2026-06-29T06:38:21.944588+00:00","sec_items":["5.02"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.2,"calibrated_materiality_score":0.2,"confidence":"high","headline":"ADTRAN reports death of Director Emeritus Roy J. Nichols on August 29, 2021","bullets":["Roy J. Nichols, Director Emeritus of ADTRAN, passed away on August 29, 2021.","Nichols had retired from the Board of Directors on August 15, 2016.","No current director or officer changes result from this event."],"urls":{"canonical":"https://secwatch.observer/filing/0000950170-21-001615","json":"https://secwatch.observer/filing/0000950170-21-001615.json","markdown":"https://secwatch.observer/filing/0000950170-21-001615.md","text":"https://secwatch.observer/filing/0000950170-21-001615.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/926282/000095017021001615/0000950170-21-001615-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/926282/000095017021001615/adtn-20210829.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-29T06:38:21.944588+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":"8d52f1d660","claim":"Roy J. Nichols departed as Director Emeritus at ADTRAN Holdings, Inc..","evidence_excerpt":"Mr. Roy J. Nichols, who served as a Director Emeritus of ADTRAN, Inc. (the “Company”), passed away on August 29, 2021.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/926282/000095017021001615/0000950170-21-001615-index.htm","confidence":0.95,"family_label":"Executive change","details":[{"label":"Action","value":"passed away"},{"label":"Role","value":"Director Emeritus"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}