{"schema_version":"secwatch.filing_event.v1","accession":"0001680062-25-000023","form_type":"8-K","ticker":"ACMR","cik":"0001680062","company_name":"ACM Research, Inc.","filed_at":"2025-09-24T23:59:59+00:00","discovered_at":"2026-05-14T18:02:44.620981+00:00","generated_at":"2026-05-17T05:47:48.480015+00:00","sec_items":["8.01","9.01"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.7,"calibrated_materiality_score":0.7,"confidence":"high","headline":"ACM Shanghai subsidiary raises $630M private placement; ACM stake drops to 74.5%","bullets":["ACM Shanghai issued 38.6M ordinary shares at RMB 116.11 per share, gross proceeds approx. $630M.","Net proceeds of $624M for R&D, capex, and working capital.","Allocation to 17 qualified investors, all cash; six-month lock-up before STAR Market trading.","ACM ownership decreases from 81.1% to 74.5%; ACM remains controlling shareholder.","Private offering reported on Shanghai Stock Exchange website as required by STAR Market rules."],"urls":{"canonical":"https://secwatch.observer/filing/0001680062-25-000023","json":"https://secwatch.observer/filing/0001680062-25-000023.json","markdown":"https://secwatch.observer/filing/0001680062-25-000023.md","text":"https://secwatch.observer/filing/0001680062-25-000023.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1680062/000168006225000023/0001680062-25-000023-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1680062/000168006225000023/acmr-20250924.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-17T05:47:48.480015+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"}