{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-23-097240","form_type":"8-K","ticker":"ADTN","cik":"0000926282","company_name":"ADTRAN Holdings, Inc.","filed_at":"2023-04-11T23:59:59+00:00","discovered_at":"2026-05-14T18:03:42.889861+00:00","generated_at":"2026-06-17T03:58:15.416685+00:00","sec_items":["2.02","9.01"],"event_type":"earnings","sentiment":"negative","materiality_score":0.75,"calibrated_materiality_score":0.75,"confidence":"high","headline":"ADTRAN pre-announces Q1 revenue of $322-326M, below guidance of $355-375M","bullets":["Preliminary Q1 revenue $322M-$326M, missing guidance of $355M-$375M due to customer inventory corrections.","GAAP operating margin expected -14% to -17%; non-GAAP operating margin -1% to -2.5%.","Subscriber Solutions impacted by customer inventory corrections; Access & Optical Networking grew sequentially.","CEO expects inventory issues transitory with improvement in Q2; company adjusting expenses near term.","Final Q1 results scheduled for release on May 8/9, 2023."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-23-097240","json":"https://secwatch.observer/filing/0001193125-23-097240.json","markdown":"https://secwatch.observer/filing/0001193125-23-097240.md","text":"https://secwatch.observer/filing/0001193125-23-097240.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/926282/000119312523097240/0001193125-23-097240-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/926282/000119312523097240/d499918d8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-17T03:58:15.416685+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":"02963c2a4c737057e3f7742da31c9825c3ac31e1","claim":"ADTRAN Holdings, Inc. reported fiscal quarter ended March 31, 2023 results: revenue expected to be between $322 million and $326 million.","evidence_excerpt":"31, 2023. All figures in this release are approximate due to the preliminary nature of the announcement. For the first quarter, preliminary revenue is expected to be between $322 million and $326 million as compared to our guidance of $355 million to $375 million. This was primarily due to customer inventory corrections which impacted our Subscriber Solutions","evidence_source":"SEC 8-K Item 2.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/926282/000119312523097240/0001193125-23-097240-index.htm","confidence":0.9,"family_label":"Earnings Releases","details":[{"label":"Period","value":"fiscal quarter ended March 31, 2023"},{"label":"Revenue","value":"expected to be between $322 million and $326 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"}