{"entity":{"type":"insider","cik":"0001721620","url":"/insider/0001721620","json_url":"/insider/0001721620.json","name":"Wang Jian","name_source":"as-filed","also_issuer":false,"cross_url":null},"coverage_statement":{"n_transactions":9,"n_filings":5,"first":"2020-12-31","last":"2025-09-19","span_basis":"filed_date"},"name_variants":[{"name":"Wang Jian","source":"filing","n_filings":5,"first_seen":"2020-12-31","last_seen":"2025-09-19"}],"transactions":[{"id":4170596,"accession":"0001140361-25-035581","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001140361-25-035581","line_url":"/filing/0001140361-25-035581#line-2","is_derivative":false,"issuer_cik":"0001680062","issuer_name":"ACM Research, Inc.","issuer_ticker":"ACMR","issuer_name_source":null,"issuer_url":"/issuer/0001680062","owner_cik":"0001721620","owner_name":"Wang Jian","owner_display_name":"Wang Jian","owner_url":"/insider/0001721620","role":"Officer","role_mark":"O","role_mark_label":"Officer","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"See remarks","security_title":"Class A Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":30000.0,"shares_display":"30,000","price_per_share":35.0,"price_display":"35.00","price_state":"stated","total_value":1050000.0,"total_display":"1,050,000.00","total_whole":"1,050,000","shares_owned_after":253158.0,"shares_owned_after_display":"253,158","ownership_form":"D","is_10b5_1":null,"transaction_date":"2025-09-18","filed_date":"2025-09-19","scope":"insider"},{"id":4490057,"accession":"0001140361-25-032732","txn_seq":4,"anchor":"line-4","filing_url":"/filing/0001140361-25-032732","line_url":"/filing/0001140361-25-032732#line-4","is_derivative":false,"issuer_cik":"0001680062","issuer_name":"ACM Research, Inc.","issuer_ticker":"ACMR","issuer_name_source":null,"issuer_url":"/issuer/0001680062","owner_cik":"0001721620","owner_name":"Wang Jian","owner_display_name":"Wang Jian","owner_url":"/insider/0001721620","role":"Officer","role_mark":"O","role_mark_label":"Officer","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"See remarks","security_title":"Class A Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":30000.0,"shares_display":"30,000","price_per_share":32.0,"price_display":"32.00","price_state":"stated","total_value":960000.0,"total_display":"960,000.00","total_whole":"960,000","shares_owned_after":253158.0,"shares_owned_after_display":"253,158","ownership_form":"D","is_10b5_1":null,"transaction_date":"2025-08-25","filed_date":"2025-08-26","scope":"insider"},{"id":4490048,"accession":"0001140361-25-032732","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001140361-25-032732","line_url":"/filing/0001140361-25-032732#line-2","is_derivative":false,"issuer_cik":"0001680062","issuer_name":"ACM Research, Inc.","issuer_ticker":"ACMR","issuer_name_source":null,"issuer_url":"/issuer/0001680062","owner_cik":"0001721620","owner_name":"Wang Jian","owner_display_name":"Wang Jian","owner_url":"/insider/0001721620","role":"Officer","role_mark":"O","role_mark_label":"Officer","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"See remarks","security_title":"Class A Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":30000.0,"shares_display":"30,000","price_per_share":30.0,"price_display":"30.00","price_state":"stated","total_value":900000.0,"total_display":"900,000.00","total_whole":"900,000","shares_owned_after":253158.0,"shares_owned_after_display":"253,158","ownership_form":"D","is_10b5_1":null,"transaction_date":"2025-08-22","filed_date":"2025-08-26","scope":"insider"},{"id":3131442,"accession":"0001140361-24-029892","txn_seq":5,"anchor":"line-5","filing_url":"/filing/0001140361-24-029892","line_url":"/filing/0001140361-24-029892","is_derivative":false,"issuer_cik":"0001680062","issuer_name":"ACM Research, Inc.","issuer_ticker":"ACMR","issuer_name_source":null,"issuer_url":"/issuer/0001680062","owner_cik":"0001721620","owner_name":"Wang Jian","owner_display_name":"Wang Jian","owner_url":"/insider/0001721620","role":"Officer","role_mark":"O","role_mark_label":"Officer","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"See remarks","security_title":"Class A Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":30000.0,"shares_display":"30,000","price_per_share":23.0192,"price_display":"23.02","price_state":"stated","total_value":690576.0,"total_display":"690,576.00","total_whole":"690,576","shares_owned_after":254838.0,"shares_owned_after_display":"254,838","ownership_form":"D","is_10b5_1":null,"transaction_date":"2024-06-11","filed_date":"2024-06-12","scope":"insider","n_lines":2},{"id":3125852,"accession":"0001140361-24-029892","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001140361-24-029892","line_url":"/filing/0001140361-24-029892#line-2","is_derivative":false,"issuer_cik":"0001680062","issuer_name":"ACM Research, Inc.","issuer_ticker":"ACMR","issuer_name_source":null,"issuer_url":"/issuer/0001680062","owner_cik":"0001721620","owner_name":"Wang Jian","owner_display_name":"Wang Jian","owner_url":"/insider/0001721620","role":"Officer","role_mark":"O","role_mark_label":"Officer","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"See remarks","security_title":"Class A Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":30000.0,"shares_display":"30,000","price_per_share":22.07,"price_display":"22.07","price_state":"stated","total_value":662100.0,"total_display":"662,100.00","total_whole":"662,100","shares_owned_after":253158.0,"shares_owned_after_display":"253,158","ownership_form":"D","is_10b5_1":null,"transaction_date":"2024-06-10","filed_date":"2024-06-12","scope":"insider"},{"id":2639177,"accession":"0001140361-24-029352","txn_seq":4,"anchor":"line-4","filing_url":"/filing/0001140361-24-029352","line_url":"/filing/0001140361-24-029352#line-4","is_derivative":false,"issuer_cik":"0001680062","issuer_name":"ACM Research, Inc.","issuer_ticker":"ACMR","issuer_name_source":null,"issuer_url":"/issuer/0001680062","owner_cik":"0001721620","owner_name":"Wang Jian","owner_display_name":"Wang Jian","owner_url":"/insider/0001721620","role":"Officer","role_mark":"O","role_mark_label":"Officer","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"See remarks","security_title":"Class A Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":30000.0,"shares_display":"30,000","price_per_share":22.07,"price_display":"22.07","price_state":"stated","total_value":662100.0,"total_display":"662,100.00","total_whole":"662,100","shares_owned_after":253158.0,"shares_owned_after_display":"253,158","ownership_form":"D","is_10b5_1":null,"transaction_date":"2024-06-07","filed_date":"2024-06-07","scope":"insider"},{"id":2639167,"accession":"0001140361-24-029352","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001140361-24-029352","line_url":"/filing/0001140361-24-029352#line-2","is_derivative":false,"issuer_cik":"0001680062","issuer_name":"ACM Research, Inc.","issuer_ticker":"ACMR","issuer_name_source":null,"issuer_url":"/issuer/0001680062","owner_cik":"0001721620","owner_name":"Wang Jian","owner_display_name":"Wang Jian","owner_url":"/insider/0001721620","role":"Officer","role_mark":"O","role_mark_label":"Officer","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"See remarks","security_title":"Class A Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":30000.0,"shares_display":"30,000","price_per_share":22.92,"price_display":"22.92","price_state":"stated","total_value":687600.0,"total_display":"687,600.00","total_whole":"687,600","shares_owned_after":253158.0,"shares_owned_after_display":"253,158","ownership_form":"D","is_10b5_1":null,"transaction_date":"2024-06-06","filed_date":"2024-06-07","scope":"insider"},{"id":3084296,"accession":"0001140361-20-030086","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001140361-20-030086","line_url":"/filing/0001140361-20-030086#line-1","is_derivative":false,"issuer_cik":"0001680062","issuer_name":"ACM Research, Inc.","issuer_ticker":"ACMR","issuer_name_source":null,"issuer_url":"/issuer/0001680062","owner_cik":"0001721620","owner_name":"Wang Jian","owner_display_name":"Wang Jian","owner_url":"/insider/0001721620","role":"Officer","role_mark":"O","role_mark_label":"Officer","role_mark_generic":"Officer","n_reporting_owners":null,"other_reporting_owners":null,"officer_title":"See remarks","security_title":"Class A Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":32486.0,"shares_display":"32,486","price_per_share":78.0,"price_display":"78.00","price_state":"stated","total_value":2533908.0,"total_display":"2,533,908.00","total_whole":"2,533,908","shares_owned_after":84386.0,"shares_owned_after_display":"84,386","ownership_form":"D","is_10b5_1":null,"transaction_date":"2020-12-30","filed_date":"2020-12-31","scope":"insider"}],"collapsed":true,"next_cursor":null,"ledger_fault":false,"count":{"value":9,"kind":"exact"},"open_market_only":false,"composition":{"kind":"exact","rows":[{"code":"P","label":"Open-market purchase","n":0,"open_market":true},{"code":"S","label":"Open-market sale","n":9,"open_market":true},{"code":"M","label":"Option exercise","n":0,"open_market":false},{"code":"A","label":"Grant or award","n":0,"open_market":false},{"code":"F","label":"Tax withholding","n":0,"open_market":false},{"code":"D","label":"Disposition to the issuer","n":0,"open_market":false},{"code":"X","label":"In-the-money option exercise","n":0,"open_market":false}],"total":9},"affiliations":[{"type":"issuer","type_label":"ISSUER","cik":"0001680062","name":"ACM Research, Inc.","url":"/issuer/0001680062","role":"Officer","n_filings":5,"first_seen":"2020-12-31","last_seen":"2025-09-19"}],"order_statement":"Newest transaction date first, id breaking the tie.","canonical_url":"https://ebomi.com/insider/0001721620","retrieved_at":"2026-08-23T09:25:06+00:00","coverage":{"filings":1506293,"transactions":4290787,"issuers":28597,"insiders":152303,"first_filed_date":"2003-06-30","last_filed_date":"2026-08-21","last_ingest":"2026-08-22T05:23:40.159918+00:00","counts_are":{"filings":"estimate","transactions":"estimate","issuers":"estimate","insiders":"estimate"},"source":"SEC EDGAR Form 4 filings, parsed by ebomi","fault":false},"license":{"underlying_records":"US SEC filings are public records of the United States government and are not subject to copyright. The transactional facts in them are not ours to license.","this_presentation":"The parsing, normalisation, curation, and presentation are ebomi's own work.","grant":"undecided","grant_note":"The open licence for ebomi's own layer is an open owner decision (SPEC-20260731T1159Z open question 3: CC BY 4.0 or CC0 with a citation request). Until it is taken, no grant is asserted here.","citation_request":"Balogh, A. Insider trading. Scientific Data 10, 237 (2023)","url":"https://ebomi.com/license"},"fair_use":{"policy":"These JSON endpoints are open and unauthenticated. Please read them at a human pace, identify your client in the User-Agent header, and use the published dataset for bulk work rather than crawling page by page.","bulk_alternative":"doi:10.1038/s41597-023-02147-6"}}