{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-23-257289","form_type":"8-K","ticker":"ADTN","cik":"0000926282","company_name":"ADTRAN Holdings, Inc.","filed_at":"2023-10-17T23:59:59+00:00","discovered_at":"2026-05-14T18:03:32.435212+00:00","generated_at":"2026-06-09T23:01:59.028571+00:00","sec_items":["2.02","7.01","9.01"],"event_type":"earnings","sentiment":"negative","materiality_score":0.65,"calibrated_materiality_score":0.65,"confidence":"high","headline":"ADTRAN Q3 rev $272.3M misses $275-305M guidance; GAAP op margin -30.2%","bullets":["Preliminary Q3 revenue $272.3M, below guidance range $275-305M, primarily due to stronger USD.","GAAP operating margin -30.2%, impacted by one-time adjustments; non-GAAP op margin -1.9% (within -5% to 0% guidance).","Customer count grew but customers expected to manage inventory conservatively and cut capex in Q4.","Final Q3 results to be released on Nov 6/7, 2023."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-23-257289","json":"https://secwatch.observer/filing/0001193125-23-257289.json","markdown":"https://secwatch.observer/filing/0001193125-23-257289.md","text":"https://secwatch.observer/filing/0001193125-23-257289.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/926282/000119312523257289/0001193125-23-257289-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/926282/000119312523257289/d163912d8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-09T23:01:59.028571+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":"a2edb8ea1fa62103ad423b92ef970d4fb005f71a","claim":"ADTRAN Holdings, Inc. reported fiscal quarter ended September 30, 2023 results: revenue $272.3 million.","evidence_excerpt":"quarter ended September 30, 2023. All results in this release are approximate due to the preliminary nature of the announcement. For the third quarter, preliminary revenue was $272.3 million as compared to the Company’s prior guidance range of $275 million to $305 million. The resulting preliminary GAAP operating margin for the third quarter was -30.2%, and it was","evidence_source":"SEC 8-K Item 2.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/926282/000119312523257289/0001193125-23-257289-index.htm","confidence":0.92,"family_label":"Earnings Releases","details":[{"label":"Period","value":"fiscal quarter ended September 30, 2023"},{"label":"Revenue","value":"$272.3 million"},{"label":"Result","value":"preliminary results"}],"fact_type":"earnings_release"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}