{"schema_version":"secwatch.filing_event.v1","accession":"0001387467-22-000071","form_type":"8-K","ticker":"AOSL","cik":"0001387467","company_name":"ALPHA & OMEGA SEMICONDUCTOR Ltd","filed_at":"2022-10-11T23:59:59+00:00","discovered_at":"2026-05-14T18:03:50.406145+00:00","generated_at":"2026-06-23T04:19:13.158891+00:00","sec_items":["4.01","9.01"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.35,"calibrated_materiality_score":0.35,"confidence":"high","headline":"Alpha and Omega Semiconductor dismisses BDO, appoints Baker Tilly as new auditor","bullets":["Effective Oct 10, 2022, Audit Committee approved Baker Tilly as independent auditor for FY ending June 30, 2023.","BDO dismissed on Oct 5, 2022; no adverse opinions or disagreements in prior two fiscal years.","No consultations with Baker Tilly prior to engagement; no reportable events.","BDO letter attached as Exhibit 16.1 agreeing with company statements."],"urls":{"canonical":"https://secwatch.observer/filing/0001387467-22-000071","json":"https://secwatch.observer/filing/0001387467-22-000071.json","markdown":"https://secwatch.observer/filing/0001387467-22-000071.md","text":"https://secwatch.observer/filing/0001387467-22-000071.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1387467/000138746722000071/0001387467-22-000071-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1387467/000138746722000071/aosl-20221005.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-23T04:19:13.158891+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"}