{"schema_version":"secwatch.filing_event.v1","accession":"0001680062-26-000009","form_type":"8-K","ticker":"ACMR","cik":"0001680062","company_name":"ACM Research, Inc.","filed_at":"2026-01-30T23:59:59+00:00","discovered_at":"2026-05-14T18:02:35.871256+00:00","generated_at":"2026-05-16T05:59:41.870282+00:00","sec_items":["8.01","9.01"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.4,"calibrated_materiality_score":0.4,"confidence":"high","headline":"ACM Research to sell 4.8M shares of ACM Shanghai (1% stake) via inquiry-based transfer","bullets":["ACM Research intends to sell 4,801,648 shares of ACM Shanghai (1.34% of its ownership; 1% of total shares) via SSE inquiry-based transfer for general corporate purposes.","Floor price set at no less than 70% of the 20-day average trading price of ACM Shanghai shares through the date of the subscription invitation.","Transferees must be qualified institutional investors; shares acquired are subject to a 6-month lock-up.","The transfer does not change control of ACM Shanghai; ACMR US remains controlling shareholder."],"urls":{"canonical":"https://secwatch.observer/filing/0001680062-26-000009","json":"https://secwatch.observer/filing/0001680062-26-000009.json","markdown":"https://secwatch.observer/filing/0001680062-26-000009.md","text":"https://secwatch.observer/filing/0001680062-26-000009.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1680062/000168006226000009/0001680062-26-000009-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1680062/000168006226000009/acmr-20260130.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-16T05:59:41.870282+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"}