{"entity":{"type":"insider","cik":"0001721580","url":"/insider/0001721580","json_url":"/insider/0001721580.json","name":"Wang David H","name_source":"as-filed","also_issuer":false,"cross_url":null},"coverage_statement":{"n_transactions":56,"n_filings":19,"first":"2020-09-04","last":"2026-06-05","span_basis":"filed_date"},"name_variants":[{"name":"Wang David H","source":"filing","n_filings":19,"first_seen":"2020-09-04","last_seen":"2026-06-05"}],"transactions":[{"id":5744854,"accession":"0001140361-26-024280","txn_seq":13,"anchor":"line-13","filing_url":"/filing/0001140361-26-024280","line_url":"/filing/0001140361-26-024280","is_derivative":false,"issuer_cik":"0001680062","issuer_name":"ACM Research, Inc.","issuer_ticker":"ACMR","issuer_name_source":null,"issuer_url":"/issuer/0001680062","owner_cik":"0001721580","owner_name":"Wang David H","owner_display_name":"Wang David H","owner_url":"/insider/0001721580","role":"Director, Officer, Ten percent owner","role_mark":"D","role_mark_label":"Director","role_mark_generic":"Director","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":40002.0,"shares_display":"40,002","price_per_share":85.80055897205139,"price_display":"85.80","price_state":"stated","total_value":3432193.96,"total_display":"3,432,193.96","total_whole":"3,432,194","shares_owned_after":823107.0,"shares_owned_after_display":"823,107","ownership_form":"D","is_10b5_1":null,"transaction_date":"2026-06-04","filed_date":"2026-06-05","scope":"insider","n_lines":5},{"id":5744844,"accession":"0001140361-26-024280","txn_seq":7,"anchor":"line-7","filing_url":"/filing/0001140361-26-024280","line_url":"/filing/0001140361-26-024280","is_derivative":false,"issuer_cik":"0001680062","issuer_name":"ACM Research, Inc.","issuer_ticker":"ACMR","issuer_name_source":null,"issuer_url":"/issuer/0001680062","owner_cik":"0001721580","owner_name":"Wang David H","owner_display_name":"Wang David H","owner_url":"/insider/0001721580","role":"Director, Officer, Ten percent owner","role_mark":"D","role_mark_label":"Director","role_mark_generic":"Director","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":60000.0,"shares_display":"60,000","price_per_share":90.05324033333333,"price_display":"90.05","price_state":"stated","total_value":5403194.42,"total_display":"5,403,194.42","total_whole":"5,403,194","shares_owned_after":819663.0,"shares_owned_after_display":"819,663","ownership_form":"D","is_10b5_1":null,"transaction_date":"2026-06-03","filed_date":"2026-06-05","scope":"insider","n_lines":6},{"id":5821563,"accession":"0001140361-26-009401","txn_seq":7,"anchor":"line-7","filing_url":"/filing/0001140361-26-009401","line_url":"/filing/0001140361-26-009401","is_derivative":false,"issuer_cik":"0001680062","issuer_name":"ACM Research, Inc.","issuer_ticker":"ACMR","issuer_name_source":null,"issuer_url":"/issuer/0001680062","owner_cik":"0001721580","owner_name":"Wang David H","owner_display_name":"Wang David H","owner_url":"/insider/0001721580","role":"Director, Officer, Ten percent owner","role_mark":"D","role_mark_label":"Director","role_mark_generic":"Director","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":50000.0,"shares_display":"50,000","price_per_share":45.5784528,"price_display":"45.58","price_state":"stated","total_value":2278922.64,"total_display":"2,278,922.64","total_whole":"2,278,923","shares_owned_after":803410.0,"shares_owned_after_display":"803,410","ownership_form":"D","is_10b5_1":null,"transaction_date":"2026-03-12","filed_date":"2026-03-13","scope":"insider","n_lines":3},{"id":5821556,"accession":"0001140361-26-009401","txn_seq":3,"anchor":"line-3","filing_url":"/filing/0001140361-26-009401","line_url":"/filing/0001140361-26-009401","is_derivative":false,"issuer_cik":"0001680062","issuer_name":"ACM Research, Inc.","issuer_ticker":"ACMR","issuer_name_source":null,"issuer_url":"/issuer/0001680062","owner_cik":"0001721580","owner_name":"Wang David H","owner_display_name":"Wang David H","owner_url":"/insider/0001721580","role":"Director, Officer, Ten percent owner","role_mark":"D","role_mark_label":"Director","role_mark_generic":"Director","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":60000.0,"shares_display":"60,000","price_per_share":47.9247025,"price_display":"47.92","price_state":"stated","total_value":2875482.15,"total_display":"2,875,482.15","total_whole":"2,875,482","shares_owned_after":807335.0,"shares_owned_after_display":"807,335","ownership_form":"D","is_10b5_1":null,"transaction_date":"2026-03-11","filed_date":"2026-03-13","scope":"insider","n_lines":2},{"id":4425331,"accession":"0001140361-25-044559","txn_seq":6,"anchor":"line-6","filing_url":"/filing/0001140361-25-044559","line_url":"/filing/0001140361-25-044559","is_derivative":false,"issuer_cik":"0001680062","issuer_name":"ACM Research, Inc.","issuer_ticker":"ACMR","issuer_name_source":null,"issuer_url":"/issuer/0001680062","owner_cik":"0001721580","owner_name":"Wang David H","owner_display_name":"Wang David H","owner_url":"/insider/0001721580","role":"Director, Officer, Ten percent owner","role_mark":"D","role_mark_label":"Director","role_mark_generic":"Director","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":60000.0,"shares_display":"60,000","price_per_share":34.122745,"price_display":"34.12","price_state":"stated","total_value":2047364.7,"total_display":"2,047,364.70","total_whole":"2,047,365","shares_owned_after":802708.0,"shares_owned_after_display":"802,708","ownership_form":"D","is_10b5_1":null,"transaction_date":"2025-12-04","filed_date":"2025-12-05","scope":"insider","n_lines":2},{"id":4425319,"accession":"0001140361-25-044559","txn_seq":3,"anchor":"line-3","filing_url":"/filing/0001140361-25-044559","line_url":"/filing/0001140361-25-044559","is_derivative":false,"issuer_cik":"0001680062","issuer_name":"ACM Research, Inc.","issuer_ticker":"ACMR","issuer_name_source":null,"issuer_url":"/issuer/0001680062","owner_cik":"0001721580","owner_name":"Wang David H","owner_display_name":"Wang David H","owner_url":"/insider/0001721580","role":"Director, Officer, Ten percent owner","role_mark":"D","role_mark_label":"Director","role_mark_generic":"Director","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":70000.0,"shares_display":"70,000","price_per_share":33.05874285714286,"price_display":"33.06","price_state":"stated","total_value":2314112.0,"total_display":"2,314,112.00","total_whole":"2,314,112","shares_owned_after":803908.0,"shares_owned_after_display":"803,908","ownership_form":"D","is_10b5_1":null,"transaction_date":"2025-12-03","filed_date":"2025-12-05","scope":"insider","n_lines":2},{"id":4878796,"accession":"0001140361-25-034208","txn_seq":5,"anchor":"line-5","filing_url":"/filing/0001140361-25-034208","line_url":"/filing/0001140361-25-034208#line-5","is_derivative":false,"issuer_cik":"0001680062","issuer_name":"ACM Research, Inc.","issuer_ticker":"ACMR","issuer_name_source":null,"issuer_url":"/issuer/0001680062","owner_cik":"0001721580","owner_name":"Wang David H","owner_display_name":"Wang David H","owner_url":"/insider/0001721580","role":"Director, Officer, Ten percent owner","role_mark":"D","role_mark_label":"Director","role_mark_generic":"Director","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":60000.0,"shares_display":"60,000","price_per_share":26.44,"price_display":"26.44","price_state":"stated","total_value":1586400.0,"total_display":"1,586,400.00","total_whole":"1,586,400","shares_owned_after":672708.0,"shares_owned_after_display":"672,708","ownership_form":"D","is_10b5_1":null,"transaction_date":"2025-09-04","filed_date":"2025-09-05","scope":"insider"},{"id":4878789,"accession":"0001140361-25-034208","txn_seq":3,"anchor":"line-3","filing_url":"/filing/0001140361-25-034208","line_url":"/filing/0001140361-25-034208","is_derivative":false,"issuer_cik":"0001680062","issuer_name":"ACM Research, Inc.","issuer_ticker":"ACMR","issuer_name_source":null,"issuer_url":"/issuer/0001680062","owner_cik":"0001721580","owner_name":"Wang David H","owner_display_name":"Wang David H","owner_url":"/insider/0001721580","role":"Director, Officer, Ten percent owner","role_mark":"D","role_mark_label":"Director","role_mark_generic":"Director","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":70000.0,"shares_display":"70,000","price_per_share":26.762670571428572,"price_display":"26.76","price_state":"stated","total_value":1873386.94,"total_display":"1,873,386.94","total_whole":"1,873,387","shares_owned_after":676651.0,"shares_owned_after_display":"676,651","ownership_form":"D","is_10b5_1":null,"transaction_date":"2025-09-03","filed_date":"2025-09-05","scope":"insider","n_lines":2},{"id":5142448,"accession":"0001140361-25-020348","txn_seq":5,"anchor":"line-5","filing_url":"/filing/0001140361-25-020348","line_url":"/filing/0001140361-25-020348#line-5","is_derivative":false,"issuer_cik":"0001680062","issuer_name":"ACM Research, Inc.","issuer_ticker":"ACMR","issuer_name_source":null,"issuer_url":"/issuer/0001680062","owner_cik":"0001721580","owner_name":"Wang David H","owner_display_name":"Wang David H","owner_url":"/insider/0001721580","role":"Director, Officer, Ten percent owner","role_mark":"D","role_mark_label":"Director","role_mark_generic":"Director","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":60000.0,"shares_display":"60,000","price_per_share":22.63,"price_display":"22.63","price_state":"stated","total_value":1357800.0,"total_display":"1,357,800.00","total_whole":"1,357,800","shares_owned_after":672708.0,"shares_owned_after_display":"672,708","ownership_form":"D","is_10b5_1":null,"transaction_date":"2025-05-22","filed_date":"2025-05-23","scope":"insider"},{"id":5142441,"accession":"0001140361-25-020348","txn_seq":3,"anchor":"line-3","filing_url":"/filing/0001140361-25-020348","line_url":"/filing/0001140361-25-020348","is_derivative":false,"issuer_cik":"0001680062","issuer_name":"ACM Research, Inc.","issuer_ticker":"ACMR","issuer_name_source":null,"issuer_url":"/issuer/0001680062","owner_cik":"0001721580","owner_name":"Wang David H","owner_display_name":"Wang David H","owner_url":"/insider/0001721580","role":"Director, Officer, Ten percent owner","role_mark":"D","role_mark_label":"Director","role_mark_generic":"Director","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":70000.0,"shares_display":"70,000","price_per_share":23.600050285714286,"price_display":"23.60","price_state":"stated","total_value":1652003.52,"total_display":"1,652,003.52","total_whole":"1,652,004","shares_owned_after":672716.0,"shares_owned_after_display":"672,716","ownership_form":"D","is_10b5_1":null,"transaction_date":"2025-05-21","filed_date":"2025-05-23","scope":"insider","n_lines":2},{"id":4201209,"accession":"0001140361-25-008688","txn_seq":4,"anchor":"line-4","filing_url":"/filing/0001140361-25-008688","line_url":"/filing/0001140361-25-008688","is_derivative":false,"issuer_cik":"0001680062","issuer_name":"ACM Research, Inc.","issuer_ticker":"ACMR","issuer_name_source":null,"issuer_url":"/issuer/0001680062","owner_cik":"0001721580","owner_name":"Wang David H","owner_display_name":"Wang David H","owner_url":"/insider/0001721580","role":"Director, Officer, Ten percent owner","role_mark":"D","role_mark_label":"Director","role_mark_generic":"Director","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":37500.0,"shares_display":"37,500","price_per_share":27.2997824,"price_display":"27.30","price_state":"stated","total_value":1023741.84,"total_display":"1,023,741.84","total_whole":"1,023,742","shares_owned_after":673727.0,"shares_owned_after_display":"673,727","ownership_form":"D","is_10b5_1":null,"transaction_date":"2025-03-13","filed_date":"2025-03-13","scope":"insider","n_lines":2},{"id":4201202,"accession":"0001140361-25-008688","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001140361-25-008688","line_url":"/filing/0001140361-25-008688#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":"0001721580","owner_name":"Wang David H","owner_display_name":"Wang David H","owner_url":"/insider/0001721580","role":"Director, Officer, Ten percent owner","role_mark":"D","role_mark_label":"Director","role_mark_generic":"Director","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":37500.0,"shares_display":"37,500","price_per_share":27.42,"price_display":"27.42","price_state":"stated","total_value":1028250.0,"total_display":"1,028,250.00","total_whole":"1,028,250","shares_owned_after":710208.0,"shares_owned_after_display":"710,208","ownership_form":"D","is_10b5_1":null,"transaction_date":"2025-03-12","filed_date":"2025-03-13","scope":"insider"},{"id":4201199,"accession":"0001140361-25-008688","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001140361-25-008688","line_url":"/filing/0001140361-25-008688#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":"0001721580","owner_name":"Wang David H","owner_display_name":"Wang David H","owner_url":"/insider/0001721580","role":"Director, Officer, Ten percent owner","role_mark":"D","role_mark_label":"Director","role_mark_generic":"Director","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":56250.0,"shares_display":"56,250","price_per_share":26.57,"price_display":"26.57","price_state":"stated","total_value":1494562.5,"total_display":"1,494,562.50","total_whole":"1,494,563","shares_owned_after":747708.0,"shares_owned_after_display":"747,708","ownership_form":"D","is_10b5_1":null,"transaction_date":"2025-03-11","filed_date":"2025-03-13","scope":"insider"},{"id":2546551,"accession":"0001140361-24-048306","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001140361-24-048306","line_url":"/filing/0001140361-24-048306#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":"0001721580","owner_name":"Wang David H","owner_display_name":"Wang David H","owner_url":"/insider/0001721580","role":"Director, Officer, Ten percent owner","role_mark":"D","role_mark_label":"Director","role_mark_generic":"Director","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":56250.0,"shares_display":"56,250","price_per_share":17.44,"price_display":"17.44","price_state":"stated","total_value":981000.0,"total_display":"981,000.00","total_whole":"981,000","shares_owned_after":598006.0,"shares_owned_after_display":"598,006","ownership_form":"D","is_10b5_1":null,"transaction_date":"2024-11-29","filed_date":"2024-12-03","scope":"insider"},{"id":3035483,"accession":"0001140361-24-048076","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001140361-24-048076","line_url":"/filing/0001140361-24-048076","is_derivative":false,"issuer_cik":"0001680062","issuer_name":"ACM Research, Inc.","issuer_ticker":"ACMR","issuer_name_source":null,"issuer_url":"/issuer/0001680062","owner_cik":"0001721580","owner_name":"Wang David H","owner_display_name":"Wang David H","owner_url":"/insider/0001721580","role":"Director, Officer, Ten percent owner","role_mark":"D","role_mark_label":"Director","role_mark_generic":"Director","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":56250.0,"shares_display":"56,250","price_per_share":17.885988266666665,"price_display":"17.89","price_state":"stated","total_value":1006086.84,"total_display":"1,006,086.84","total_whole":"1,006,087","shares_owned_after":663740.0,"shares_owned_after_display":"663,740","ownership_form":"D","is_10b5_1":null,"transaction_date":"2024-11-26","filed_date":"2024-11-29","scope":"insider","n_lines":2},{"id":2150392,"accession":"0001140361-24-047887","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001140361-24-047887","line_url":"/filing/0001140361-24-047887#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":"0001721580","owner_name":"Wang David H","owner_display_name":"Wang David H","owner_url":"/insider/0001721580","role":"Director, Officer, Ten percent owner","role_mark":"D","role_mark_label":"Director","role_mark_generic":"Director","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":56250.0,"shares_display":"56,250","price_per_share":19.08,"price_display":"19.08","price_state":"stated","total_value":1073250.0,"total_display":"1,073,250.00","total_whole":"1,073,250","shares_owned_after":710506.0,"shares_owned_after_display":"710,506","ownership_form":"D","is_10b5_1":null,"transaction_date":"2024-11-22","filed_date":"2024-11-26","scope":"insider"},{"id":2911027,"accession":"0001140361-24-028376","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001140361-24-028376","line_url":"/filing/0001140361-24-028376","is_derivative":false,"issuer_cik":"0001680062","issuer_name":"ACM Research, Inc.","issuer_ticker":"ACMR","issuer_name_source":null,"issuer_url":"/issuer/0001680062","owner_cik":"0001721580","owner_name":"Wang David H","owner_display_name":"Wang David H","owner_url":"/insider/0001721580","role":"Director, Officer, Ten percent owner","role_mark":"D","role_mark_label":"Director","role_mark_generic":"Director","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":86090.0,"shares_display":"86,090","price_per_share":22.62,"price_display":"22.62","price_state":"stated","total_value":1947355.8,"total_display":"1,947,355.80","total_whole":"1,947,356","shares_owned_after":545108.0,"shares_owned_after_display":"545,108","ownership_form":"D","is_10b5_1":null,"transaction_date":"2024-05-29","filed_date":"2024-05-31","scope":"insider","n_lines":2},{"id":3125840,"accession":"0001140361-24-027456","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001140361-24-027456","line_url":"/filing/0001140361-24-027456","is_derivative":false,"issuer_cik":"0001680062","issuer_name":"ACM Research, Inc.","issuer_ticker":"ACMR","issuer_name_source":null,"issuer_url":"/issuer/0001680062","owner_cik":"0001721580","owner_name":"Wang David H","owner_display_name":"Wang David H","owner_url":"/insider/0001721580","role":"Director, Officer, Ten percent owner","role_mark":"D","role_mark_label":"Director","role_mark_generic":"Director","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":90000.0,"shares_display":"90,000","price_per_share":22.81,"price_display":"22.81","price_state":"stated","total_value":2052900.0,"total_display":"2,052,900.00","total_whole":"2,052,900","shares_owned_after":635108.0,"shares_owned_after_display":"635,108","ownership_form":"D","is_10b5_1":null,"transaction_date":"2024-05-22","filed_date":"2024-05-24","scope":"insider","n_lines":2},{"id":2209596,"accession":"0001140361-24-013647","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001140361-24-013647","line_url":"/filing/0001140361-24-013647","is_derivative":false,"issuer_cik":"0001680062","issuer_name":"ACM Research, Inc.","issuer_ticker":"ACMR","issuer_name_source":null,"issuer_url":"/issuer/0001680062","owner_cik":"0001721580","owner_name":"Wang David H","owner_display_name":"Wang David H","owner_url":"/insider/0001721580","role":"Director, Officer, Ten percent owner","role_mark":"D","role_mark_label":"Director","role_mark_generic":"Director","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":87089.0,"shares_display":"87,089","price_per_share":27.61600156162087,"price_display":"27.62","price_state":"stated","total_value":2405049.96,"total_display":"2,405,049.96","total_whole":"2,405,050","shares_owned_after":514629.0,"shares_owned_after_display":"514,629","ownership_form":"D","is_10b5_1":null,"transaction_date":"2024-03-14","filed_date":"2024-03-15","scope":"insider","n_lines":2},{"id":2886449,"accession":"0001140361-24-012895","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001140361-24-012895","line_url":"/filing/0001140361-24-012895","is_derivative":false,"issuer_cik":"0001680062","issuer_name":"ACM Research, Inc.","issuer_ticker":"ACMR","issuer_name_source":null,"issuer_url":"/issuer/0001680062","owner_cik":"0001721580","owner_name":"Wang David H","owner_display_name":"Wang David H","owner_url":"/insider/0001721580","role":"Director, Officer, Ten percent owner","role_mark":"D","role_mark_label":"Director","role_mark_generic":"Director","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":90000.0,"shares_display":"90,000","price_per_share":30.355,"price_display":"30.36","price_state":"stated","total_value":2731950.0,"total_display":"2,731,950.00","total_whole":"2,731,950","shares_owned_after":636107.0,"shares_owned_after_display":"636,107","ownership_form":"D","is_10b5_1":null,"transaction_date":"2024-03-08","filed_date":"2024-03-12","scope":"insider","n_lines":2},{"id":8103469,"accession":"0001140361-23-055757","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001140361-23-055757","line_url":"/filing/0001140361-23-055757","is_derivative":false,"issuer_cik":"0001680062","issuer_name":"ACM Research, Inc.","issuer_ticker":"ACMR","issuer_name_source":null,"issuer_url":"/issuer/0001680062","owner_cik":"0001721580","owner_name":"Wang David H","owner_display_name":"Wang David H","owner_url":"/insider/0001721580","role":"Director, Officer, Ten percent owner","role_mark":"D","role_mark_label":"Director","role_mark_generic":"Director","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":84776.0,"shares_display":"84,776","price_per_share":17.135308106067754,"price_display":"17.14","price_state":"stated","total_value":1452662.88,"total_display":"1,452,662.88","total_whole":"1,452,663","shares_owned_after":543794.0,"shares_owned_after_display":"543,794","ownership_form":"D","is_10b5_1":null,"transaction_date":"2023-11-29","filed_date":"2023-12-01","scope":"insider","n_lines":2},{"id":8491901,"accession":"0001140361-23-054706","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001140361-23-054706","line_url":"/filing/0001140361-23-054706","is_derivative":false,"issuer_cik":"0001680062","issuer_name":"ACM Research, Inc.","issuer_ticker":"ACMR","issuer_name_source":null,"issuer_url":"/issuer/0001680062","owner_cik":"0001721580","owner_name":"Wang David H","owner_display_name":"Wang David H","owner_url":"/insider/0001721580","role":"Director, Officer, Ten percent owner","role_mark":"D","role_mark_label":"Director","role_mark_generic":"Director","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":90000.0,"shares_display":"90,000","price_per_share":17.675,"price_display":"17.68","price_state":"stated","total_value":1590750.0,"total_display":"1,590,750.00","total_whole":"1,590,750","shares_owned_after":588794.0,"shares_owned_after_display":"588,794","ownership_form":"D","is_10b5_1":null,"transaction_date":"2023-11-22","filed_date":"2023-11-27","scope":"insider","n_lines":2},{"id":8676355,"accession":"0001140361-23-043978","txn_seq":3,"anchor":"line-3","filing_url":"/filing/0001140361-23-043978","line_url":"/filing/0001140361-23-043978#line-3","is_derivative":false,"issuer_cik":"0001680062","issuer_name":"ACM Research, Inc.","issuer_ticker":"ACMR","issuer_name_source":null,"issuer_url":"/issuer/0001680062","owner_cik":"0001721580","owner_name":"Wang David H","owner_display_name":"Wang David H","owner_url":"/insider/0001721580","role":"Director, Officer, Ten percent owner","role_mark":"D","role_mark_label":"Director","role_mark_generic":"Director","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":85116.0,"shares_display":"85,116","price_per_share":17.68,"price_display":"17.68","price_state":"stated","total_value":1504850.88,"total_display":"1,504,850.88","total_whole":"1,504,851","shares_owned_after":504018.0,"shares_owned_after_display":"504,018","ownership_form":"D","is_10b5_1":null,"transaction_date":"2023-09-13","filed_date":"2023-09-14","scope":"insider"},{"id":8676353,"accession":"0001140361-23-043978","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001140361-23-043978","line_url":"/filing/0001140361-23-043978","is_derivative":false,"issuer_cik":"0001680062","issuer_name":"ACM Research, Inc.","issuer_ticker":"ACMR","issuer_name_source":null,"issuer_url":"/issuer/0001680062","owner_cik":"0001721580","owner_name":"Wang David H","owner_display_name":"Wang David H","owner_url":"/insider/0001721580","role":"Director, Officer, Ten percent owner","role_mark":"D","role_mark_label":"Director","role_mark_generic":"Director","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":90000.0,"shares_display":"90,000","price_per_share":18.057393,"price_display":"18.06","price_state":"stated","total_value":1625165.37,"total_display":"1,625,165.37","total_whole":"1,625,165","shares_owned_after":592707.0,"shares_owned_after_display":"592,707","ownership_form":"D","is_10b5_1":null,"transaction_date":"2023-09-12","filed_date":"2023-09-14","scope":"insider","n_lines":2},{"id":5110897,"accession":"0001140361-21-009502","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001140361-21-009502","line_url":"/filing/0001140361-21-009502#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":"0001721580","owner_name":"Wang David H","owner_display_name":"Wang David H","owner_url":"/insider/0001721580","role":"Director, Officer, Ten percent owner","role_mark":"D","role_mark_label":"Director","role_mark_generic":"Director","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":49228.0,"shares_display":"49,228","price_per_share":90.55,"price_display":"90.55","price_state":"stated","total_value":4457595.4,"total_display":"4,457,595.40","total_whole":"4,457,595","shares_owned_after":168006.0,"shares_owned_after_display":"168,006","ownership_form":"D","is_10b5_1":null,"transaction_date":"2021-03-19","filed_date":"2021-03-22","scope":"insider"}],"collapsed":true,"next_cursor":"2021-03-19|5110897","ledger_fault":false,"count":{"value":56,"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":56,"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":56},"affiliations":[{"type":"issuer","type_label":"ISSUER","cik":"0001680062","name":"ACM Research, Inc.","url":"/issuer/0001680062","role":"Director, Officer, Ten percent owner","n_filings":19,"first_seen":"2020-09-04","last_seen":"2026-06-05"}],"order_statement":"Newest transaction date first, id breaking the tie.","canonical_url":"https://ebomi.com/insider/0001721580","retrieved_at":"2026-08-25T05:37:25+00:00","coverage":{"filings":1506293,"transactions":4290787,"issuers":28597,"insiders":152303,"first_filed_date":"2003-06-30","last_filed_date":"2026-08-24","last_ingest":"2026-08-25T05:24:19.374141+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"}}