{"schema_version":"secwatch.filing_event.v1","accession":"0001140361-24-046185","form_type":"8-K","ticker":"ACMR","cik":"0001680062","company_name":"ACM Research, Inc.","filed_at":"2024-11-12T23:59:59+00:00","discovered_at":"2026-05-14T18:03:09.205257+00:00","generated_at":"2026-05-30T02:00:51.249691+00:00","sec_items":["5.02","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.3,"calibrated_materiality_score":0.3,"confidence":"high","headline":"Xiao Xing resigns from ACM Research board effective November 15, 2024","bullets":["Director Xiao Xing provided notice of resignation from Board and Audit Committee, effective Nov 15, 2024.","Resignation not due to any disagreement with the Company, Board, management, or operations.","Ms. Xing served on Audit Committee; resignation reduces committee size and no replacement named."],"urls":{"canonical":"https://secwatch.observer/filing/0001140361-24-046185","json":"https://secwatch.observer/filing/0001140361-24-046185.json","markdown":"https://secwatch.observer/filing/0001140361-24-046185.md","text":"https://secwatch.observer/filing/0001140361-24-046185.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1680062/000114036124046185/0001140361-24-046185-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1680062/000114036124046185/ef20038478_8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-30T02:00:51.249691+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":"98dbc91bff","claim":"Xiao Xing resigned as Director at ACM Research, Inc..","evidence_excerpt":"Xiao Xing has provided notice to the Board of Directors (the “Board”) of ACM Research, Inc. (the “Company”) that she will resign as a member of the Board and the Audit Committee, effective November 15, 2024.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036124046185/0001140361-24-046185-index.htm","confidence":1.0,"family_label":"Executive change","details":[{"label":"Action","value":"resigned"},{"label":"Role","value":"Director"}],"fact_type":"executive_change"}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}