{"schema_version":"secwatch.filing_event.v1","accession":"0001628280-26-025742","form_type":"8-K","ticker":"AOSL","cik":"0001387467","company_name":"ALPHA & OMEGA SEMICONDUCTOR Ltd","filed_at":"2026-04-17T23:59:59+00:00","discovered_at":"2026-05-14T18:02:32.220723+00:00","generated_at":"2026-05-15T05:28:54.565798+00:00","sec_items":["5.02"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.3,"calibrated_materiality_score":0.3,"confidence":"high","headline":"Director Lucas S. Chang retires from AOSL board effective April 17, 2026","bullets":["Dr. Lucas S. Chang notified the company of his retirement from the Board on April 13, 2026.","Retirement effective April 17, 2026; no new director named.","No reasons for departure given beyond retirement; no disputes disclosed."],"urls":{"canonical":"https://secwatch.observer/filing/0001628280-26-025742","json":"https://secwatch.observer/filing/0001628280-26-025742.json","markdown":"https://secwatch.observer/filing/0001628280-26-025742.md","text":"https://secwatch.observer/filing/0001628280-26-025742.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1387467/000162828026025742/0001628280-26-025742-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1387467/000162828026025742/aosl-20260413.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-15T05:28:54.565798+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"}