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The shares were sold in multiple transactions at prices ranging from $81.97 to $82.33, inclusive."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0001140361-26-033892","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036126033892/form4.xml","form_type":"4"}},{"id":679610,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2026-08-20T20:30:14.000Z","date":"2026-08-18","kind":"sale","planned":true,"acquired":false,"shares":3400,"price":81.31,"value":276454.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 13, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $80.95 to $81.91, inclusive."}],"balance_after":400,"source":{"system":"sec-edgar","filing":"0001140361-26-033892","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036126033892/form4.xml","form_type":"4"}},{"id":679609,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2026-08-20T20:30:14.000Z","date":"2026-08-18","kind":"sale","planned":true,"acquired":false,"shares":1200,"price":80.29,"value":96348.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 13, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $79.89 to $80.77, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (2), (3), and (4) to this Form 4."}],"balance_after":3800,"source":{"system":"sec-edgar","filing":"0001140361-26-033892","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036126033892/form4.xml","form_type":"4"}},{"id":679608,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2026-08-20T20:30:14.000Z","date":"2026-08-18","kind":"exercise","planned":true,"acquired":true,"shares":5000,"price":5.6,"value":28000.0,"ownership":{"direct":true},"balance_after":5000,"source":{"system":"sec-edgar","filing":"0001140361-26-033892","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036126033892/form4.xml","form_type":"4"}},{"id":767400,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Stock Option","published_at":"2026-05-21T20:30:11.000Z","date":"2026-05-19","kind":"exercise","planned":true,"acquired":false,"shares":5000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"The option is fully vested and exercisable."}],"balance_after":50000,"derivative":{"exercise_price":5.6,"expiration_date":"2029-04-22","underlying":"Class A Common Stock","underlying_shares":5000},"source":{"system":"sec-edgar","filing":"0001140361-26-022458","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036126022458/form4.xml","form_type":"4"}},{"id":767399,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2026-05-21T20:30:11.000Z","date":"2026-05-19","kind":"sale","planned":true,"acquired":false,"shares":1858,"price":67.54,"value":125489.32,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 13, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $67.43 to $68.00, inclusive."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0001140361-26-022458","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036126022458/form4.xml","form_type":"4"}},{"id":767398,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2026-05-21T20:30:11.000Z","date":"2026-05-19","kind":"sale","planned":true,"acquired":false,"shares":1309,"price":67.21,"value":87977.89,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 13, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $66.41 to $67.37, inclusive."}],"balance_after":1858,"source":{"system":"sec-edgar","filing":"0001140361-26-022458","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036126022458/form4.xml","form_type":"4"}},{"id":767397,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2026-05-21T20:30:11.000Z","date":"2026-05-19","kind":"sale","planned":true,"acquired":false,"shares":500,"price":65.09,"value":32545.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 13, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $64.78 to $65.77, inclusive."}],"balance_after":3167,"source":{"system":"sec-edgar","filing":"0001140361-26-022458","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036126022458/form4.xml","form_type":"4"}},{"id":767396,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2026-05-21T20:30:11.000Z","date":"2026-05-19","kind":"sale","planned":true,"acquired":false,"shares":1333,"price":63.84,"value":85098.72,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 13, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $63.7 to $64.22, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (2), (3), (4), and (5) to this Form 4."}],"balance_after":3667,"source":{"system":"sec-edgar","filing":"0001140361-26-022458","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036126022458/form4.xml","form_type":"4"}},{"id":767395,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2026-05-21T20:30:11.000Z","date":"2026-05-19","kind":"exercise","planned":true,"acquired":true,"shares":5000,"price":5.6,"value":28000.0,"ownership":{"direct":true},"balance_after":5000,"source":{"system":"sec-edgar","filing":"0001140361-26-022458","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036126022458/form4.xml","form_type":"4"}},{"id":848160,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Stock Option","published_at":"2026-03-11T20:30:26.000Z","date":"2026-03-09","kind":"exercise","planned":true,"acquired":false,"shares":5000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"The option is fully vested and exercisable."}],"balance_after":55000,"derivative":{"exercise_price":5.6,"expiration_date":"2029-04-22","underlying":"Class A Common Stock","underlying_shares":5000},"source":{"system":"sec-edgar","filing":"0001140361-26-009039","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036126009039/form4.xml","form_type":"4"}},{"id":848159,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2026-03-11T20:30:26.000Z","date":"2026-03-09","kind":"sale","planned":true,"acquired":false,"shares":900,"price":43.94,"value":39546.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 13, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $43.90 to $44.00, inclusive."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0001140361-26-009039","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036126009039/form4.xml","form_type":"4"}},{"id":848158,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2026-03-11T20:30:26.000Z","date":"2026-03-09","kind":"sale","planned":true,"acquired":false,"shares":4100,"price":43.37,"value":177817.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 13, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $42.88 to $43.87, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (2) and (3) to this Form 4."}],"balance_after":900,"source":{"system":"sec-edgar","filing":"0001140361-26-009039","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036126009039/form4.xml","form_type":"4"}},{"id":848157,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2026-03-11T20:30:26.000Z","date":"2026-03-09","kind":"exercise","planned":true,"acquired":true,"shares":5000,"price":5.6,"value":28000.0,"ownership":{"direct":true},"balance_after":5000,"source":{"system":"sec-edgar","filing":"0001140361-26-009039","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036126009039/form4.xml","form_type":"4"}},{"id":998595,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2025-11-14T21:33:08.000Z","date":"2025-11-12","kind":"gift","planned":false,"acquired":false,"shares":755090,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Reflects a gift of 755,090 shares of Class A common stock from the reporting person to the Haiping Dun & Chi-Pin H Dun Revocable Trust, of which the reporting person is co-trustee and of which the reporting person's immediate family members are beneficiaries."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0001140361-25-042348","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036125042348/form4.xml","form_type":"4"}},{"id":1066107,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Stock Option","published_at":"2025-08-14T20:30:28.000Z","date":"2025-08-12","kind":"grant","planned":false,"acquired":true,"shares":20000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The option will vest and become exercisable immediately prior to the 2026 annual meeting of stockholders of the issuer, subject to continued service through the vesting date."}],"balance_after":20000,"derivative":{"exercise_price":24.93,"expiration_date":"2035-08-11","underlying":"Class A Common Stock","underlying_shares":20000},"source":{"system":"sec-edgar","filing":"0001140361-25-031257","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036125031257/form4.xml","form_type":"4"}},{"id":1198480,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2025-03-19T01:30:20.000Z","date":"2025-03-14","kind":"sale","planned":true,"acquired":false,"shares":7062,"price":29.23,"value":206422.26,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 17, 2023."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $29.00 to $29.53, inclusive."}],"balance_after":755090,"source":{"system":"sec-edgar","filing":"0001140361-25-009327","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036125009327/form4.xml","form_type":"4"}},{"id":1198479,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2025-03-19T01:30:20.000Z","date":"2025-03-14","kind":"sale","planned":true,"acquired":false,"shares":2456,"price":28.32,"value":69553.92,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 17, 2023."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $28.00 to $28.89, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (2) and (3) to this Form 4."}],"balance_after":762152,"source":{"system":"sec-edgar","filing":"0001140361-25-009327","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036125009327/form4.xml","form_type":"4"}},{"id":1209056,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2025-03-12T20:30:27.000Z","date":"2025-03-10","kind":"sale","planned":true,"acquired":false,"shares":15001,"price":26.54,"value":398126.54,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 17, 2023."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $26.22 to $26.78, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (2) to this Form 4."}],"balance_after":764608,"source":{"system":"sec-edgar","filing":"0001140361-25-008444","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036125008444/form4.xml","form_type":"4"}},{"id":1221505,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Stock Option","published_at":"2025-03-05T21:30:48.000Z","date":"2025-03-03","kind":"exercise","planned":false,"acquired":false,"shares":25001,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On March 3 2025, the reporting person exercised, by net exercise, a previously issued stock option to purchase 25,001 shares of Class A Common Stock of the Issuer. The reporting person paid the exercise price on a cashless basis, resulting in the Issuer withholding 482 shares of Class A Common Stock for payment of the exercise price, based on the closing price of the Issuer's Class A Common Stock on February 28, 2025 of $25.94, and issuing to the reporting person the remaining 24,519 shares of Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The option is fully vested and exercisable."}],"balance_after":0,"derivative":{"exercise_price":0.5,"expiration_date":"2025-04-30","underlying":"Class A Common Stock","underlying_shares":25001},"source":{"system":"sec-edgar","filing":"0001140361-25-007211","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036125007211/form4.xml","form_type":"4"}},{"id":1221504,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2025-03-05T21:30:48.000Z","date":"2025-03-03","kind":"tax_withholding","planned":false,"acquired":false,"shares":482,"price":25.94,"value":12503.08,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On March 3 2025, the reporting person exercised, by net exercise, a previously issued stock option to purchase 25,001 shares of Class A Common Stock of the Issuer. The reporting person paid the exercise price on a cashless basis, resulting in the Issuer withholding 482 shares of Class A Common Stock for payment of the exercise price, based on the closing price of the Issuer's Class A Common Stock on February 28, 2025 of $25.94, and issuing to the reporting person the remaining 24,519 shares of Class A Common Stock."}],"balance_after":779609,"source":{"system":"sec-edgar","filing":"0001140361-25-007211","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036125007211/form4.xml","form_type":"4"}},{"id":1221503,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2025-03-05T21:30:48.000Z","date":"2025-03-03","kind":"exercise","planned":false,"acquired":true,"shares":25001,"price":0.5,"value":12500.5,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On March 3 2025, the reporting person exercised, by net exercise, a previously issued stock option to purchase 25,001 shares of Class A Common Stock of the Issuer. The reporting person paid the exercise price on a cashless basis, resulting in the Issuer withholding 482 shares of Class A Common Stock for payment of the exercise price, based on the closing price of the Issuer's Class A Common Stock on February 28, 2025 of $25.94, and issuing to the reporting person the remaining 24,519 shares of Class A Common Stock."}],"balance_after":780091,"source":{"system":"sec-edgar","filing":"0001140361-25-007211","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036125007211/form4.xml","form_type":"4"}},{"id":1344357,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2024-12-03T21:32:23.000Z","date":"2024-11-29","kind":"sale","planned":true,"acquired":false,"shares":19058,"price":17.43,"value":332180.94,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 17, 2023."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $17.15 to $17.65, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (2) to this Form 4."}],"balance_after":755090,"source":{"system":"sec-edgar","filing":"0001140361-24-048310","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036124048310/form4.xml","form_type":"4"}},{"id":1350533,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2024-11-26T21:30:53.000Z","date":"2024-11-22","kind":"sale","planned":true,"acquired":false,"shares":15000,"price":19.12,"value":286800.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 17, 2023."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $18.97 to $19.29, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (2) to this Form 4."}],"balance_after":774148,"source":{"system":"sec-edgar","filing":"0001140361-24-047888","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036124047888/form4.xml","form_type":"4"}},{"id":1361293,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Stock Option","published_at":"2024-11-18T21:32:29.000Z","date":"2024-11-14","kind":"exercise","planned":false,"acquired":false,"shares":35000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On November 14, 2024, the reporting person exercised, by net exercise, a previously issued stock option to purchase 35,000 shares of Class A Common Stock of the Issuer. The reporting person paid the exercise price on a cashless basis, resulting in the Issuer withholding 942 shares of Class A Common Stock for payment of the exercise price, based on the closing price of the Issuer's Class A Common Stock on November 13, 2024 of $18.59, and issuing to the reporting person the remaining 34,058 shares of Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The option is fully vested and exercisable."}],"balance_after":25001,"derivative":{"exercise_price":0.5,"expiration_date":"2025-04-30","underlying":"Class A Common Stock","underlying_shares":35000},"source":{"system":"sec-edgar","filing":"0001140361-24-047169","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036124047169/form4.xml","form_type":"4"}},{"id":1361292,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2024-11-18T21:32:29.000Z","date":"2024-11-14","kind":"tax_withholding","planned":false,"acquired":false,"shares":942,"price":18.59,"value":17511.78,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On November 14, 2024, the reporting person exercised, by net exercise, a previously issued stock option to purchase 35,000 shares of Class A Common Stock of the Issuer. The reporting person paid the exercise price on a cashless basis, resulting in the Issuer withholding 942 shares of Class A Common Stock for payment of the exercise price, based on the closing price of the Issuer's Class A Common Stock on November 13, 2024 of $18.59, and issuing to the reporting person the remaining 34,058 shares of Class A Common Stock."}],"balance_after":789148,"source":{"system":"sec-edgar","filing":"0001140361-24-047169","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036124047169/form4.xml","form_type":"4"}},{"id":1361291,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2024-11-18T21:32:29.000Z","date":"2024-11-14","kind":"exercise","planned":false,"acquired":true,"shares":35000,"price":0.5,"value":17500.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On November 14, 2024, the reporting person exercised, by net exercise, a previously issued stock option to purchase 35,000 shares of Class A Common Stock of the Issuer. The reporting person paid the exercise price on a cashless basis, resulting in the Issuer withholding 942 shares of Class A Common Stock for payment of the exercise price, based on the closing price of the Issuer's Class A Common Stock on November 13, 2024 of $18.59, and issuing to the reporting person the remaining 34,058 shares of Class A Common Stock."}],"balance_after":790090,"source":{"system":"sec-edgar","filing":"0001140361-24-047169","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036124047169/form4.xml","form_type":"4"}},{"id":1417417,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2024-09-03T20:30:17.000Z","date":"2024-08-29","kind":"sale","planned":true,"acquired":false,"shares":19097,"price":18.08,"value":345273.76,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 17, 2023."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $17.90 to $18.25, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (2) to this Form 4."}],"balance_after":755090,"source":{"system":"sec-edgar","filing":"0001140361-24-039942","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036124039942/form4.xml","form_type":"4"}},{"id":1422953,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2024-08-26T20:30:27.000Z","date":"2024-08-22","kind":"sale","planned":true,"acquired":false,"shares":15000,"price":19.85,"value":297750.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 17, 2023."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $19.75 to $19.94, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (2) to this Form 4."}],"balance_after":774187,"source":{"system":"sec-edgar","filing":"0001140361-24-038571","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036124038571/form4.xml","form_type":"4"}},{"id":1427249,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Stock Option","published_at":"2024-08-21T01:00:10.000Z","date":"2024-08-12","kind":"grant","planned":false,"acquired":true,"shares":20000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The option will vest and become exercisable immediately prior to the 2025 annual meeting of stockholders of the issuer, subject to continued service through the vesting date."}],"balance_after":20000,"derivative":{"exercise_price":18.89,"expiration_date":"2034-08-11","underlying":"Class A Common Stock","underlying_shares":20000},"source":{"system":"sec-edgar","filing":"0001140361-24-037995","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036124037995/form4.xml","form_type":"4"}},{"id":1430874,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Stock Option","published_at":"2024-08-17T01:02:36.000Z","date":"2024-08-14","kind":"exercise","planned":false,"acquired":false,"shares":35000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On August 14, 2024, the reporting person exercised, by net exercise, a previously issued stock option to purchase 35,000 shares of Class A Common Stock of the Issuer. The reporting person paid the exercise price on a cashless basis, resulting in the Issuer withholding 903 shares of Class A Common Stock for payment of the exercise price, based on the closing price of the Issuer's Class A Common Stock on August 13, 2024 of $19.38, and issuing to the reporting person the remaining 34,097 shares of Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The option is fully vested and exercisable."}],"balance_after":60001,"derivative":{"exercise_price":0.5,"expiration_date":"2025-04-30","underlying":"Class A Common Stock","underlying_shares":35000},"source":{"system":"sec-edgar","filing":"0001140361-24-037711","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036124037711/form4.xml","form_type":"4"}},{"id":1430873,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2024-08-17T01:02:36.000Z","date":"2024-08-14","kind":"tax_withholding","planned":false,"acquired":false,"shares":903,"price":19.38,"value":17500.14,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On August 14, 2024, the reporting person exercised, by net exercise, a previously issued stock option to purchase 35,000 shares of Class A Common Stock of the Issuer. The reporting person paid the exercise price on a cashless basis, resulting in the Issuer withholding 903 shares of Class A Common Stock for payment of the exercise price, based on the closing price of the Issuer's Class A Common Stock on August 13, 2024 of $19.38, and issuing to the reporting person the remaining 34,097 shares of Class A Common Stock."}],"balance_after":789187,"source":{"system":"sec-edgar","filing":"0001140361-24-037711","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036124037711/form4.xml","form_type":"4"}},{"id":1430872,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2024-08-17T01:02:36.000Z","date":"2024-08-14","kind":"exercise","planned":false,"acquired":true,"shares":35000,"price":0.5,"value":17500.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On August 14, 2024, the reporting person exercised, by net exercise, a previously issued stock option to purchase 35,000 shares of Class A Common Stock of the Issuer. The reporting person paid the exercise price on a cashless basis, resulting in the Issuer withholding 903 shares of Class A Common Stock for payment of the exercise price, based on the closing price of the Issuer's Class A Common Stock on August 13, 2024 of $19.38, and issuing to the reporting person the remaining 34,097 shares of Class A Common Stock."}],"balance_after":790090,"source":{"system":"sec-edgar","filing":"0001140361-24-037711","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036124037711/form4.xml","form_type":"4"}},{"id":1465470,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class B Common Stock","published_at":"2024-07-01T20:30:30.000Z","date":"2024-06-27","kind":"gift","planned":false,"acquired":false,"shares":300000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"Reflects a gift of 300,000 shares of Class B Common stock from the reporting person to the Dun Family GST Trust, of which the reporting person is co-trustee and of which the reporting person's immediate family members are beneficiaries."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0001140361-24-031967","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036124031967/form4.xml","form_type":"4"}},{"id":1465469,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2024-07-01T20:30:30.000Z","date":"2024-06-27","kind":"gift","planned":false,"acquired":false,"shares":100000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Reflects a gift of 100,000 shares of Class A Common stock from the reporting person to the Dun Family GST Trust, of which the reporting person is co-trustee and of which the reporting person's immediate family members are beneficiaries."}],"balance_after":755090,"source":{"system":"sec-edgar","filing":"0001140361-24-031967","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036124031967/form4.xml","form_type":"4"}},{"id":1496286,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2024-05-31T20:30:45.000Z","date":"2024-05-29","kind":"sale","planned":true,"acquired":false,"shares":19239,"price":22.63,"value":435378.57,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 17, 2023."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $22.42 to $23.05, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (2) to this Form 4."}],"balance_after":855090,"source":{"system":"sec-edgar","filing":"0001140361-24-028379","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036124028379/form4.xml","form_type":"4"}},{"id":1501469,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2024-05-24T20:30:31.000Z","date":"2024-05-22","kind":"sale","planned":true,"acquired":false,"shares":15000,"price":22.88,"value":343200.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 17, 2023."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $22.58 to $23.31, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (2) to this Form 4."}],"balance_after":874329,"source":{"system":"sec-edgar","filing":"0001140361-24-027457","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036124027457/form4.xml","form_type":"4"}},{"id":1513771,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Stock Option","published_at":"2024-05-16T13:00:11.000Z","date":"2024-05-14","kind":"exercise","planned":false,"acquired":false,"shares":35000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On May 14, 2024, the reporting person exercised, by net exercise, a previously issued stock option to purchase 35,000 shares of Class A Common Stock of the Issuer. The reporting person paid the exercise price on a cashless basis, resulting in the Issuer withholding 761 shares of Class A Common Stock for payment of the exercise price, based on the closing price of the Issuer's Class A Common Stock on May 13, 2024 of $23.02, and issuing to the reporting person the remaining 34,239 shares of Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The option is fully vested and exercisable."}],"balance_after":95001,"derivative":{"exercise_price":0.5,"expiration_date":"2025-04-30","underlying":"Class A Common Stock","underlying_shares":35000},"source":{"system":"sec-edgar","filing":"0001140361-24-026364","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036124026364/form4.xml","form_type":"4"}},{"id":1513770,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2024-05-16T13:00:11.000Z","date":"2024-05-14","kind":"tax_withholding","planned":false,"acquired":false,"shares":761,"price":23.02,"value":17518.22,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On May 14, 2024, the reporting person exercised, by net exercise, a previously issued stock option to purchase 35,000 shares of Class A Common Stock of the Issuer. The reporting person paid the exercise price on a cashless basis, resulting in the Issuer withholding 761 shares of Class A Common Stock for payment of the exercise price, based on the closing price of the Issuer's Class A Common Stock on May 13, 2024 of $23.02, and issuing to the reporting person the remaining 34,239 shares of Class A Common Stock."}],"balance_after":889329,"source":{"system":"sec-edgar","filing":"0001140361-24-026364","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036124026364/form4.xml","form_type":"4"}},{"id":1513769,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2024-05-16T13:00:11.000Z","date":"2024-05-14","kind":"exercise","planned":false,"acquired":true,"shares":35000,"price":0.5,"value":17500.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On May 14, 2024, the reporting person exercised, by net exercise, a previously issued stock option to purchase 35,000 shares of Class A Common Stock of the Issuer. The reporting person paid the exercise price on a cashless basis, resulting in the Issuer withholding 761 shares of Class A Common Stock for payment of the exercise price, based on the closing price of the Issuer's Class A Common Stock on May 13, 2024 of $23.02, and issuing to the reporting person the remaining 34,239 shares of Class A Common Stock."}],"balance_after":890090,"source":{"system":"sec-edgar","filing":"0001140361-24-026364","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036124026364/form4.xml","form_type":"4"}},{"id":1574215,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2024-03-16T01:32:09.000Z","date":"2024-03-14","kind":"sale","planned":true,"acquired":false,"shares":3557,"price":28.34,"value":100805.38,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 17, 2023."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $28.11 to $28.53, inclusive."}],"balance_after":855090,"source":{"system":"sec-edgar","filing":"0001140361-24-013646","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036124013646/form4.xml","form_type":"4"}},{"id":1574214,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2024-03-16T01:32:09.000Z","date":"2024-03-14","kind":"sale","planned":true,"acquired":false,"shares":15877,"price":27.56,"value":437570.12,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 17, 2023."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $27.03 to $27.88, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (2) and (3) to this Form 4."}],"balance_after":858647,"source":{"system":"sec-edgar","filing":"0001140361-24-013646","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036124013646/form4.xml","form_type":"4"}},{"id":1580110,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2024-03-13T01:30:41.000Z","date":"2024-03-08","kind":"sale","planned":true,"acquired":false,"shares":15000,"price":30.36,"value":455400.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 17, 2023."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $30.06 to $30.60, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (2) to this Form 4."}],"balance_after":874524,"source":{"system":"sec-edgar","filing":"0001140361-24-012896","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036124012896/form4.xml","form_type":"4"}},{"id":1593867,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Stock Option","published_at":"2024-03-06T02:31:13.000Z","date":"2024-03-01","kind":"exercise","planned":false,"acquired":false,"shares":35000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On March 1, 2024, the reporting person exercised, by net exercise, a previously issued stock option to purchase 35,000 shares of Class A Common Stock of the Issuer. The reporting person paid the exercise price on a cashless basis, resulting in the Issuer withholding 566 shares of Class A Common Stock for payment of the exercise price, based on the closing price of the Issuer's Class A Common Stock on February 29, 2024 of $30.92, and issuing to the reporting person the remaining 34,434 shares of Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The option is fully vested and exercisable."}],"balance_after":130001,"derivative":{"exercise_price":0.5,"expiration_date":"2025-04-30","underlying":"Class A Common Stock","underlying_shares":35000},"source":{"system":"sec-edgar","filing":"0001140361-24-011554","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036124011554/form4.xml","form_type":"4"}},{"id":1593866,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2024-03-06T02:31:13.000Z","date":"2024-03-01","kind":"tax_withholding","planned":false,"acquired":false,"shares":566,"price":30.92,"value":17500.72,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On March 1, 2024, the reporting person exercised, by net exercise, a previously issued stock option to purchase 35,000 shares of Class A Common Stock of the Issuer. The reporting person paid the exercise price on a cashless basis, resulting in the Issuer withholding 566 shares of Class A Common Stock for payment of the exercise price, based on the closing price of the Issuer's Class A Common Stock on February 29, 2024 of $30.92, and issuing to the reporting person the remaining 34,434 shares of Class A Common Stock."}],"balance_after":889524,"source":{"system":"sec-edgar","filing":"0001140361-24-011554","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036124011554/form4.xml","form_type":"4"}},{"id":1593865,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2024-03-06T02:31:13.000Z","date":"2024-03-01","kind":"exercise","planned":false,"acquired":true,"shares":35000,"price":0.5,"value":17500.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On March 1, 2024, the reporting person exercised, by net exercise, a previously issued stock option to purchase 35,000 shares of Class A Common Stock of the Issuer. The reporting person paid the exercise price on a cashless basis, resulting in the Issuer withholding 566 shares of Class A Common Stock for payment of the exercise price, based on the closing price of the Issuer's Class A Common Stock on February 29, 2024 of $30.92, and issuing to the reporting person the remaining 34,434 shares of Class A Common Stock."}],"balance_after":890090,"source":{"system":"sec-edgar","filing":"0001140361-24-011554","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036124011554/form4.xml","form_type":"4"}},{"id":1725044,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2023-12-01T21:15:41.000Z","date":"2023-11-29","kind":"sale","planned":true,"acquired":false,"shares":18984,"price":17.25,"value":327474.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 17, 2023."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $16.67 to $17.72, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (2) to this Form 4."}],"balance_after":855090,"source":{"system":"sec-edgar","filing":"0001140361-23-055758","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036123055758/form4.xml","form_type":"4"}},{"id":1729341,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2023-11-27T21:24:52.000Z","date":"2023-11-22","kind":"sale","planned":true,"acquired":false,"shares":15000,"price":17.66,"value":264900.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 17, 2023."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $17.51 to $18.12, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (2) to this Form 4."}],"balance_after":874074,"source":{"system":"sec-edgar","filing":"0001140361-23-054704","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036123054704/form4.xml","form_type":"4"}},{"id":1738572,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Stock Option","published_at":"2023-11-16T21:15:29.000Z","date":"2023-11-14","kind":"exercise","planned":false,"acquired":false,"shares":35000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On November 14, 2023, the reporting person exercised, by net exercise, a previously issued stock option to purchase 35,000 shares of Class A Common Stock of the Issuer. The reporting person paid the exercise price on a cashless basis, resulting in the Issuer withholding 1,016 shares of Class A Common Stock for payment of the exercise price, based on the closing price of the Issuer's Class A Common Stock on November 14, 2023 of $17.23, and issuing to the reporting person the remaining 33,984 shares of Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The option is fully vested and exercisable."}],"balance_after":165001,"derivative":{"exercise_price":0.5,"expiration_date":"2025-04-30","underlying":"Class A Common Stock","underlying_shares":35000},"source":{"system":"sec-edgar","filing":"0001140361-23-053656","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036123053656/form4.xml","form_type":"4"}},{"id":1738571,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2023-11-16T21:15:29.000Z","date":"2023-11-14","kind":"tax_withholding","planned":false,"acquired":false,"shares":1016,"price":17.23,"value":17505.68,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On November 14, 2023, the reporting person exercised, by net exercise, a previously issued stock option to purchase 35,000 shares of Class A Common Stock of the Issuer. The reporting person paid the exercise price on a cashless basis, resulting in the Issuer withholding 1,016 shares of Class A Common Stock for payment of the exercise price, based on the closing price of the Issuer's Class A Common Stock on November 14, 2023 of $17.23, and issuing to the reporting person the remaining 33,984 shares of Class A Common Stock."}],"balance_after":889074,"source":{"system":"sec-edgar","filing":"0001140361-23-053656","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036123053656/form4.xml","form_type":"4"}},{"id":1738570,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2023-11-16T21:15:29.000Z","date":"2023-11-14","kind":"exercise","planned":false,"acquired":true,"shares":35000,"price":0.5,"value":17500.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On November 14, 2023, the reporting person exercised, by net exercise, a previously issued stock option to purchase 35,000 shares of Class A Common Stock of the Issuer. The reporting person paid the exercise price on a cashless basis, resulting in the Issuer withholding 1,016 shares of Class A Common Stock for payment of the exercise price, based on the closing price of the Issuer's Class A Common Stock on November 14, 2023 of $17.23, and issuing to the reporting person the remaining 33,984 shares of Class A Common Stock."}],"balance_after":890090,"source":{"system":"sec-edgar","filing":"0001140361-23-053656","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036123053656/form4.xml","form_type":"4"}},{"id":1797376,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2023-08-25T00:13:17.000Z","date":"2023-08-22","kind":"sale","planned":false,"acquired":false,"shares":32098,"price":13.85,"value":444557.3,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $13.59 to $14.00, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (2) to this Form 4."}],"balance_after":855090,"source":{"system":"sec-edgar","filing":"0001140361-23-041193","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036123041193/form4.xml","form_type":"4"}},{"id":1800442,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Stock Option","published_at":"2023-08-22T01:19:06.000Z","date":"2023-08-10","kind":"grant","planned":false,"acquired":false,"shares":24000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"This Form 4 amendment has been filed solely to correct the exercise price of the stock option to purchase shares of Class A Common Stock of the Issuer reported in a Form 4 filed on August 14, 2023 (the \"Form 4\"). The exercise price was inadvertently stated as $13.24 in the Form 4. The exercise price should have been stated as $13.89 in the Form 4."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The option will vest and become exercisable immediately prior to the 2024 annual meeting of stockholders of the issuer, subject to continued service through the vesting date."}],"balance_after":24000,"derivative":{"exercise_price":13.89,"expiration_date":"2033-08-09","underlying":"Class A Common Stock","underlying_shares":24000},"source":{"system":"sec-edgar","filing":"0001140361-23-040770","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036123040770/form4.xml","form_type":"4/A","original_submission_date":"2023-08-14"}},{"id":1800441,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Stock Option","published_at":"2023-08-22T01:19:06.000Z","date":"2023-08-10","kind":"grant","planned":false,"acquired":false,"shares":30000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"This Form 4 amendment has been filed solely to correct the exercise price of the stock option to purchase shares of Class A Common Stock of the Issuer reported in a Form 4 filed on August 14, 2023 (the \"Form 4\"). The exercise price was inadvertently stated as $13.24 in the Form 4. The exercise price should have been stated as $13.89 in the Form 4."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The option will vest and become exercisable as to 7,500 shares on August 10, 2024 and the remaining 22,500 shares will vest and become exercisable in equal monthly installments over the following 36 months, subject to continued service through each vesting date."}],"balance_after":30000,"derivative":{"exercise_price":13.89,"expiration_date":"2033-08-09","underlying":"Class A Common Stock","underlying_shares":30000},"source":{"system":"sec-edgar","filing":"0001140361-23-040770","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036123040770/form4.xml","form_type":"4/A","original_submission_date":"2023-08-14"}},{"id":1808161,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Stock Option","published_at":"2023-08-14T21:31:04.000Z","date":"2023-08-10","kind":"grant","planned":false,"acquired":false,"shares":24000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The option will vest and become exercisable immediately prior to the 2024 annual meeting of stockholders of the issuer, subject to continued service through the vesting date."}],"balance_after":24000,"derivative":{"exercise_price":13.24,"expiration_date":"2033-08-09","underlying":"Class A Common Stock","underlying_shares":24000},"source":{"system":"sec-edgar","filing":"0001140361-23-039746","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036123039746/form4.xml","form_type":"4"}},{"id":1808160,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Stock Option","published_at":"2023-08-14T21:31:04.000Z","date":"2023-08-10","kind":"grant","planned":false,"acquired":false,"shares":30000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The option will vest and become exercisable as to 7,500 shares on August 10, 2024 and the remaining 22,500 shares will vest and become exercisable in equal monthly installments over the following 36 months, subject to continued service through each vesting date."}],"balance_after":30000,"derivative":{"exercise_price":13.24,"expiration_date":"2033-08-09","underlying":"Class A Common Stock","underlying_shares":30000},"source":{"system":"sec-edgar","filing":"0001140361-23-039746","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036123039746/form4.xml","form_type":"4"}},{"id":1866054,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2023-06-05T22:26:49.000Z","date":"2023-06-01","kind":"sale","planned":false,"acquired":false,"shares":37500,"price":10,"value":375000.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $9.71 to $10.26, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (2) to this Form 4."}],"balance_after":887188,"source":{"system":"sec-edgar","filing":"0001140361-23-028430","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036123028430/form4.xml","form_type":"4"}},{"id":1879378,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Stock Option","published_at":"2023-05-24T22:33:09.000Z","date":"2023-05-22","kind":"exercise","planned":false,"acquired":false,"shares":37500,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On May 22, 2023, the reporting person exercised, by net exercise, a previously issued stock option to purchase 37,500 shares of Class A Common Stock of the Issuer. The reporting person paid the exercise price on a cashless basis, resulting in the Issuer withholding 1,928 shares of Class A Common Stock for payment of the exercise price, based on the closing price of the Issuer's Class A Common Stock on May 19, 2023 of $9.73, and issuing to the reporting person the remaining 35,572 shares of Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The option is fully vested and exercisable."}],"balance_after":200001,"derivative":{"exercise_price":0.5,"expiration_date":"2025-04-30","underlying":"Class A Common Stock","underlying_shares":37500},"source":{"system":"sec-edgar","filing":"0001140361-23-026456","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036123026456/form4.xml","form_type":"4"}},{"id":1879377,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2023-05-24T22:33:09.000Z","date":"2023-05-22","kind":"tax_withholding","planned":false,"acquired":false,"shares":1928,"price":9.73,"value":18759.44,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On May 22, 2023, the reporting person exercised, by net exercise, a previously issued stock option to purchase 37,500 shares of Class A Common Stock of the Issuer. The reporting person paid the exercise price on a cashless basis, resulting in the Issuer withholding 1,928 shares of Class A Common Stock for payment of the exercise price, based on the closing price of the Issuer's Class A Common Stock on May 19, 2023 of $9.73, and issuing to the reporting person the remaining 35,572 shares of Class A Common Stock."}],"balance_after":924688,"source":{"system":"sec-edgar","filing":"0001140361-23-026456","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036123026456/form4.xml","form_type":"4"}},{"id":1879376,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2023-05-24T22:33:09.000Z","date":"2023-05-22","kind":"exercise","planned":false,"acquired":true,"shares":37500,"price":0.5,"value":18750.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On May 22, 2023, the reporting person exercised, by net exercise, a previously issued stock option to purchase 37,500 shares of Class A Common Stock of the Issuer. The reporting person paid the exercise price on a cashless basis, resulting in the Issuer withholding 1,928 shares of Class A Common Stock for payment of the exercise price, based on the closing price of the Issuer's Class A Common Stock on May 19, 2023 of $9.73, and issuing to the reporting person the remaining 35,572 shares of Class A Common Stock."}],"balance_after":926616,"source":{"system":"sec-edgar","filing":"0001140361-23-026456","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036123026456/form4.xml","form_type":"4"}},{"id":1944109,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2023-03-21T00:55:34.000Z","date":"2023-03-16","kind":"sale","planned":false,"acquired":false,"shares":37500,"price":12.06,"value":452250.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $11.81 to $12.25, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (2) to this Form 4."}],"balance_after":889116,"source":{"system":"sec-edgar","filing":"0001140361-23-012644","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036123012644/form4.xml","form_type":"4"}},{"id":1956299,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Stock Option","published_at":"2023-03-14T01:02:03.000Z","date":"2023-03-09","kind":"exercise","acquired":false,"shares":37500,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On March 9, 2023, the reporting person exercised, by net exercise, a previously issued stock option to purchase 37,500 shares of Class A Common Stock of the Issuer. The reporting person paid the exercise price on a cashless basis, resulting in the Issuer withholding 1,504 shares of Class A Common Stock for payment of the exercise price, based on the closing price of the Issuer's Class A Common Stock on March 8, 2023 of $12.47, and issuing to the reporting person the remaining 35,996 shares of Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The option is fully vested and exercisable."}],"balance_after":237501,"derivative":{"exercise_price":0.5,"expiration_date":"2025-04-30","underlying":"Class A Common Stock","underlying_shares":37500},"source":{"system":"sec-edgar","filing":"0001140361-23-011466","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036123011466/form4.xml","form_type":"4"}},{"id":1956298,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2023-03-14T01:02:03.000Z","date":"2023-03-09","kind":"tax_withholding","acquired":false,"shares":1504,"price":12.47,"value":18754.88,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On March 9, 2023, the reporting person exercised, by net exercise, a previously issued stock option to purchase 37,500 shares of Class A Common Stock of the Issuer. The reporting person paid the exercise price on a cashless basis, resulting in the Issuer withholding 1,504 shares of Class A Common Stock for payment of the exercise price, based on the closing price of the Issuer's Class A Common Stock on March 8, 2023 of $12.47, and issuing to the reporting person the remaining 35,996 shares of Class A Common Stock."}],"balance_after":926616,"source":{"system":"sec-edgar","filing":"0001140361-23-011466","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036123011466/form4.xml","form_type":"4"}},{"id":1956297,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2023-03-14T01:02:03.000Z","date":"2023-03-09","kind":"exercise","acquired":true,"shares":37500,"price":0.5,"value":18750.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On March 9, 2023, the reporting person exercised, by net exercise, a previously issued stock option to purchase 37,500 shares of Class A Common Stock of the Issuer. The reporting person paid the exercise price on a cashless basis, resulting in the Issuer withholding 1,504 shares of Class A Common Stock for payment of the exercise price, based on the closing price of the Issuer's Class A Common Stock on March 8, 2023 of $12.47, and issuing to the reporting person the remaining 35,996 shares of Class A Common Stock."}],"balance_after":928120,"source":{"system":"sec-edgar","filing":"0001140361-23-011466","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036123011466/form4.xml","form_type":"4"}},{"id":2097728,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2022-12-02T22:31:33.000Z","date":"2022-11-30","kind":"sale","acquired":false,"shares":35327,"price":8.43,"value":297806.61,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $8.23 to $8.94, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (2) to this Form 4."}],"balance_after":890620,"source":{"system":"sec-edgar","filing":"0001140361-22-044287","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036122044287/form4.xml","form_type":"4"}},{"id":2104021,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Stock Option","published_at":"2022-11-25T22:30:22.000Z","date":"2022-11-22","kind":"exercise","acquired":false,"shares":37500,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On November 22, 2022, the reporting person exercised, by net exercise, a previously issued stock option to purchase 37,500 shares of Class A Common Stock of the Issuer. The reporting person paid the exercise price on a cashless basis, resulting in the Issuer withholding 2,173 shares of Class A Common Stock for payment of the exercise price, based on the closing price of the Issuer's Class A Common Stock on November 21, 2022 of $8.63, and issuing to the reporting person the remaining 35,327 shares of Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The option is fully vested and exercisable."}],"balance_after":275001,"derivative":{"exercise_price":0.5,"expiration_date":"2025-05-01","underlying":"Class A Common Stock","underlying_shares":37500},"source":{"system":"sec-edgar","filing":"0001140361-22-043148","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036122043148/form4.xml","form_type":"4"}},{"id":2104020,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2022-11-25T22:30:22.000Z","date":"2022-11-22","kind":"tax_withholding","acquired":false,"shares":2173,"price":8.63,"value":18752.99,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On November 22, 2022, the reporting person exercised, by net exercise, a previously issued stock option to purchase 37,500 shares of Class A Common Stock of the Issuer. The reporting person paid the exercise price on a cashless basis, resulting in the Issuer withholding 2,173 shares of Class A Common Stock for payment of the exercise price, based on the closing price of the Issuer's Class A Common Stock on November 21, 2022 of $8.63, and issuing to the reporting person the remaining 35,327 shares of Class A Common Stock."}],"balance_after":925947,"source":{"system":"sec-edgar","filing":"0001140361-22-043148","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036122043148/form4.xml","form_type":"4"}},{"id":2104019,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2022-11-25T22:30:22.000Z","date":"2022-11-22","kind":"exercise","acquired":true,"shares":37500,"price":0.5,"value":18750.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On November 22, 2022, the reporting person exercised, by net exercise, a previously issued stock option to purchase 37,500 shares of Class A Common Stock of the Issuer. The reporting person paid the exercise price on a cashless basis, resulting in the Issuer withholding 2,173 shares of Class A Common Stock for payment of the exercise price, based on the closing price of the Issuer's Class A Common Stock on November 21, 2022 of $8.63, and issuing to the reporting person the remaining 35,327 shares of Class A Common Stock."}],"balance_after":928120,"source":{"system":"sec-edgar","filing":"0001140361-22-043148","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036122043148/form4.xml","form_type":"4"}},{"id":2115771,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Stock Option","published_at":"2022-11-16T02:03:06.000Z","date":"2022-11-14","kind":"exercise","acquired":false,"shares":37500,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On November 14, 2022, the reporting person exercised, by net exercise, a previously issued stock option to purchase 37,500 shares of Class A Common Stock of the Issuer. The reporting person paid the exercise price on a cashless basis, resulting in the Issuer withholding 1,970 shares of Class A Common Stock for payment of the exercise price, based on the closing price of the Issuer's Class A Common Stock on November 11, 2022 of $9.52, and issuing to the reporting person the remaining 35,530 shares of Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The option is fully vested and exercisable."}],"balance_after":312501,"derivative":{"exercise_price":0.5,"expiration_date":"2025-05-01","underlying":"Class A Common Stock","underlying_shares":37500},"source":{"system":"sec-edgar","filing":"0001140361-22-041755","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036122041755/form4.xml","form_type":"4"}},{"id":2115770,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2022-11-16T02:03:06.000Z","date":"2022-11-14","kind":"tax_withholding","acquired":false,"shares":1970,"price":9.52,"value":18754.4,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On November 14, 2022, the reporting person exercised, by net exercise, a previously issued stock option to purchase 37,500 shares of Class A Common Stock of the Issuer. The reporting person paid the exercise price on a cashless basis, resulting in the Issuer withholding 1,970 shares of Class A Common Stock for payment of the exercise price, based on the closing price of the Issuer's Class A Common Stock on November 11, 2022 of $9.52, and issuing to the reporting person the remaining 35,530 shares of Class A Common Stock."}],"balance_after":890620,"source":{"system":"sec-edgar","filing":"0001140361-22-041755","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036122041755/form4.xml","form_type":"4"}},{"id":2115769,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2022-11-16T02:03:06.000Z","date":"2022-11-14","kind":"exercise","acquired":true,"shares":37500,"price":0.5,"value":18750.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On November 14, 2022, the reporting person exercised, by net exercise, a previously issued stock option to purchase 37,500 shares of Class A Common Stock of the Issuer. The reporting person paid the exercise price on a cashless basis, resulting in the Issuer withholding 1,970 shares of Class A Common Stock for payment of the exercise price, based on the closing price of the Issuer's Class A Common Stock on November 11, 2022 of $9.52, and issuing to the reporting person the remaining 35,530 shares of Class A Common Stock."}],"balance_after":892590,"source":{"system":"sec-edgar","filing":"0001140361-22-041755","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036122041755/form4.xml","form_type":"4"}},{"id":2174650,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2022-08-25T01:01:37.000Z","date":"2022-08-22","kind":"sale","acquired":false,"shares":36537,"price":16.1,"value":588245.7,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $15.88 to $16.32, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (2) to this Form 4."}],"balance_after":855090,"source":{"system":"sec-edgar","filing":"0001140361-22-030802","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036122030802/form4.xml","form_type":"4"}},{"id":2180609,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Stock Option","published_at":"2022-08-17T22:00:38.000Z","date":"2022-08-15","kind":"exercise","acquired":false,"shares":37500,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On August 15, 2022, the reporting person exercised, by net exercise, a previously issued stock option to purchase 37,500 shares of Class A Common Stock of the Issuer. The reporting person paid the exercise price on a cashless basis, resulting in the Issuer withholding 963 shares of Class A Common Stock for payment of the exercise price, based on the closing price of the Issuer's Class A Common Stock on August 12, 2022 of $19.49, and issuing to the reporting person the remaining 36,537 shares of Class A Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The option is fully vested and exercisable."}],"balance_after":350001,"derivative":{"exercise_price":0.5,"expiration_date":"2025-05-01","underlying":"Class A Common Stock","underlying_shares":37500},"source":{"system":"sec-edgar","filing":"0001140361-22-030151","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036122030151/form4.xml","form_type":"4"}},{"id":2180608,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2022-08-17T22:00:38.000Z","date":"2022-08-15","kind":"sale","acquired":true,"shares":36519,"price":19.28,"value":704086.32,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $19.03 to $19.60, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (2) to this Form 4."}],"balance_after":891627,"source":{"system":"sec-edgar","filing":"0001140361-22-030151","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036122030151/form4.xml","form_type":"4"}},{"id":2180607,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2022-08-17T22:00:38.000Z","date":"2022-08-15","kind":"tax_withholding","acquired":false,"shares":963,"price":19.49,"value":18768.87,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On August 15, 2022, the reporting person exercised, by net exercise, a previously issued stock option to purchase 37,500 shares of Class A Common Stock of the Issuer. The reporting person paid the exercise price on a cashless basis, resulting in the Issuer withholding 963 shares of Class A Common Stock for payment of the exercise price, based on the closing price of the Issuer's Class A Common Stock on August 12, 2022 of $19.49, and issuing to the reporting person the remaining 36,537 shares of Class A Common Stock."}],"balance_after":928146,"source":{"system":"sec-edgar","filing":"0001140361-22-030151","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036122030151/form4.xml","form_type":"4"}},{"id":2180606,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2022-08-17T22:00:38.000Z","date":"2022-08-15","kind":"exercise","acquired":true,"shares":37500,"price":0.5,"value":18750.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On August 15, 2022, the reporting person exercised, by net exercise, a previously issued stock option to purchase 37,500 shares of Class A Common Stock of the Issuer. The reporting person paid the exercise price on a cashless basis, resulting in the Issuer withholding 963 shares of Class A Common Stock for payment of the exercise price, based on the closing price of the Issuer's Class A Common Stock on August 12, 2022 of $19.49, and issuing to the reporting person the remaining 36,537 shares of Class A Common Stock."}],"balance_after":929109,"source":{"system":"sec-edgar","filing":"0001140361-22-030151","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036122030151/form4.xml","form_type":"4"}},{"id":2188967,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Stock Option","published_at":"2022-08-10T21:00:57.000Z","date":"2022-08-08","kind":"exercise","acquired":false,"shares":37500,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"The option is fully vested and exercisable."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The option is fully vested and exercisable."}],"balance_after":387501,"derivative":{"exercise_price":0.5,"expiration_date":"2025-05-01","underlying":"Class A Common Stock","underlying_shares":37500},"source":{"system":"sec-edgar","filing":"0001140361-22-029103","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036122029103/form4.xml","form_type":"4"}},{"id":2188966,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2022-08-10T21:00:57.000Z","date":"2022-08-08","kind":"tax_withholding","acquired":false,"shares":981,"price":19.13,"value":18766.53,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On August 8, 2022, the reporting person exercised, by net exercise, a previously issued stock option to purchase 37,500 shares of Class A Common Stock of the Issuer. The reporting person paid the exercise price on a cashless basis, resulting in the Issuer withholding 981 shares of Class A Common Stock for payment of the exercise price, based on the closing price of the Issuer's Class A Common Stock on August 5, 2022 of $19.13, and issuing to the reporting person the remaining 36,519 shares of Class A Common Stock."}],"balance_after":891609,"source":{"system":"sec-edgar","filing":"0001140361-22-029103","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036122029103/form4.xml","form_type":"4"}},{"id":2188965,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2022-08-10T21:00:57.000Z","date":"2022-08-08","kind":"exercise","acquired":true,"shares":37500,"price":0.5,"value":18750.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On August 8, 2022, the reporting person exercised, by net exercise, a previously issued stock option to purchase 37,500 shares of Class A Common Stock of the Issuer. The reporting person paid the exercise price on a cashless basis, resulting in the Issuer withholding 981 shares of Class A Common Stock for payment of the exercise price, based on the closing price of the Issuer's Class A Common Stock on August 5, 2022 of $19.13, and issuing to the reporting person the remaining 36,519 shares of Class A Common Stock."}],"balance_after":892590,"source":{"system":"sec-edgar","filing":"0001140361-22-029103","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036122029103/form4.xml","form_type":"4"}},{"id":2213894,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Stock Option","published_at":"2022-07-05T21:31:04.000Z","date":"2022-06-30","kind":"grant","acquired":true,"shares":24000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The option will vest and become exercisable immediately prior to the 2023 annual meeting of stockholders of the issuer, subject to continued service through the vesting date."}],"balance_after":24000,"derivative":{"exercise_price":16.83,"expiration_date":"2032-06-29","underlying":"Class A Common Stock","underlying_shares":24000},"source":{"system":"sec-edgar","filing":"0001140361-22-025084","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036122025084/form4.xml","form_type":"4"}},{"id":2250825,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2022-06-01T01:03:26.000Z","date":"2022-05-27","kind":"sale","acquired":false,"shares":36150,"price":15,"value":542250.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person."}],"balance_after":855090,"source":{"system":"sec-edgar","filing":"0001140361-22-021397","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036122021397/form4.xml","form_type":"4"}},{"id":2261305,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Stock Option","published_at":"2022-05-21T01:50:28.000Z","date":"2022-05-18","kind":"exercise","acquired":false,"shares":37500,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"The option is fully vested and exercisable."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The option is fully vested and exercisable."}],"balance_after":425001,"derivative":{"exercise_price":1.5,"expiration_date":"2025-05-01","underlying":"Class A Common Stock","underlying_shares":37500},"source":{"system":"sec-edgar","filing":"0001140361-22-020150","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036122020150/form4.xml","form_type":"4"}},{"id":2261304,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2022-05-21T01:50:28.000Z","date":"2022-05-18","kind":"tax_withholding","acquired":false,"shares":1350,"price":13.89,"value":18751.5,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On May 18, 2022, the reporting person exercised, by net exercise, a previously issued stock option to purchase 37,500 shares of Class A Common Stock of the Issuer. The reporting person paid the exercise price on a cashless basis, resulting in the Issuer withholding 1,350 shares of Class A Common Stock for payment of the exercise price, based on the closing price of the Issuer's Class A Common Stock on March 17, 2022 of $13.89, and issuing to the reporting person the remaining 36,150 shares of Class A Common Stock."}],"balance_after":891240,"source":{"system":"sec-edgar","filing":"0001140361-22-020150","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036122020150/form4.xml","form_type":"4"}},{"id":2261303,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2022-05-21T01:50:28.000Z","date":"2022-05-18","kind":"exercise","acquired":true,"shares":37500,"price":0.5,"value":18750.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On May 18, 2022, the reporting person exercised, by net exercise, a previously issued stock option to purchase 37,500 shares of Class A Common Stock of the Issuer. The reporting person paid the exercise price on a cashless basis, resulting in the Issuer withholding 1,350 shares of Class A Common Stock for payment of the exercise price, based on the closing price of the Issuer's Class A Common Stock on March 17, 2022 of $13.89, and issuing to the reporting person the remaining 36,150 shares of Class A Common Stock."}],"balance_after":892590,"source":{"system":"sec-edgar","filing":"0001140361-22-020150","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036122020150/form4.xml","form_type":"4"}},{"id":2337153,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Stock Option","published_at":"2022-03-11T22:08:29.000Z","date":"2022-03-09","kind":"exercise","acquired":false,"shares":12269,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On March 9, 2022, the reporting person exercised a previously issued stock option to purchase 12,269 shares of Class A Common Stock of the Issuer."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"The option vested and became exercisable as to 41,666 shares on May 1, 2016 and the remaining 125,001 shares vested and became exercisable in equal monthly installments over the following 36 months."}],"balance_after":231,"derivative":{"exercise_price":1.5,"expiration_date":"2025-05-01","underlying":"Class A Common Stock","underlying_shares":231},"source":{"system":"sec-edgar","filing":"0001140361-22-009176","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036122009176/form4.xml","form_type":"4"}},{"id":2337152,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2022-03-11T22:08:29.000Z","date":"2022-03-09","kind":"sale","acquired":false,"shares":3000,"price":82.66,"value":247980.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $82.54 to $82.83, inclusive."}],"balance_after":297299,"source":{"system":"sec-edgar","filing":"0001140361-22-009176","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036122009176/form4.xml","form_type":"4"}},{"id":2337151,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2022-03-11T22:08:29.000Z","date":"2022-03-09","kind":"sale","acquired":false,"shares":8069,"price":82.11,"value":662545.59,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $81.49 to $82.49, inclusive."}],"balance_after":300299,"source":{"system":"sec-edgar","filing":"0001140361-22-009176","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036122009176/form4.xml","form_type":"4"}},{"id":2337150,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2022-03-11T22:08:29.000Z","date":"2022-03-09","kind":"sale","acquired":false,"shares":1200,"price":80.48,"value":96576.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $79.99 to $80.82, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (3), (4), (5) and (6) to this Form 4."}],"balance_after":308368,"source":{"system":"sec-edgar","filing":"0001140361-22-009176","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036122009176/form4.xml","form_type":"4"}},{"id":2337149,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2022-03-11T22:08:29.000Z","date":"2022-03-09","kind":"exercise","acquired":true,"shares":12269,"price":1.5,"value":18403.5,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On March 9, 2022, the reporting person exercised a previously issued stock option to purchase 12,269 shares of Class A Common Stock of the Issuer."}],"balance_after":309568,"source":{"system":"sec-edgar","filing":"0001140361-22-009176","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036122009176/form4.xml","form_type":"4"}},{"id":2349476,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Stock Option","published_at":"2022-03-04T22:26:47.000Z","date":"2022-03-02","kind":"exercise","acquired":false,"shares":12500,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"The option is fully vested and exercisable."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The option is fully vested and exercisable."}],"balance_after":154167,"derivative":{"exercise_price":1.5,"expiration_date":"2025-05-01","underlying":"Class A Common Stock","underlying_shares":12500},"source":{"system":"sec-edgar","filing":"0001140361-22-008021","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036122008021/form4.xml","form_type":"4"}},{"id":2349475,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2022-03-04T22:26:47.000Z","date":"2022-03-02","kind":"tax_withholding","acquired":false,"shares":231,"price":81.46,"value":18817.26,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On March 2, 2022, the reporting person exercised, by net exercise, a previously issued stock option to purchase 12,500 shares of Class A Common Stock of the Issuer. The reporting person paid the exercise price on a cashless basis, resulting in the Issuer withholding 231 shares of Class A Common Stock for payment of the exercise price, based on the closing price of the Issuer's Class A Common Stock on March 1, 2022 of $81.46, and issuing to the reporting person the remaining 12,269 shares of Class A Common Stock."}],"balance_after":297299,"source":{"system":"sec-edgar","filing":"0001140361-22-008021","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036122008021/form4.xml","form_type":"4"}},{"id":2349474,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2022-03-04T22:26:47.000Z","date":"2022-03-02","kind":"exercise","acquired":true,"shares":12500,"price":1.5,"value":18750.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On March 2, 2022, the reporting person exercised, by net exercise, a previously issued stock option to purchase 12,500 shares of Class A Common Stock of the Issuer. The reporting person paid the exercise price on a cashless basis, resulting in the Issuer withholding 231 shares of Class A Common Stock for payment of the exercise price, based on the closing price of the Issuer's Class A Common Stock on March 1, 2022 of $81.46, and issuing to the reporting person the remaining 12,269 shares of Class A Common Stock."}],"balance_after":297530,"source":{"system":"sec-edgar","filing":"0001140361-22-008021","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036122008021/form4.xml","form_type":"4"}},{"id":2805159,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Stock Option","published_at":"2021-03-06T02:46:49.000Z","date":"2021-02-22","kind":"grant","acquired":true,"shares":5000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"This Form 4 amendment has been filed solely to correct the exercise price of a previously issued stock option to purchase shares of Class A Common Stock of the Issuer reported in a Form 4 filed on March 3, 2021 (the \"Form 4\"). The exercise price was inadvertently stated as $119.98 in the Form 4. The exercise price should have been stated as $111.98 in the Form 4."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The option will vest and become exercisable immediately prior to the 2022 Annual Meeting of Stockholders of the Issuer, subject to continued service through the vesting date."}],"balance_after":5000,"derivative":{"exercise_price":111.98,"expiration_date":"2031-02-21","underlying":"Class A Common Stock","underlying_shares":5000},"source":{"system":"sec-edgar","filing":"0001140361-21-007578","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036121007578/form4.xml","form_type":"4/A","original_submission_date":"2021-03-03"}},{"id":2811094,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Stock Option","published_at":"2021-03-03T22:30:47.000Z","date":"2021-02-22","kind":"grant","acquired":true,"shares":5000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The option will vest and become exercisable immediately prior to the 2022 Annual Meeting of Stockholders of the Issuer, subject to continued service through the vesting date."}],"balance_after":5000,"derivative":{"exercise_price":119.98,"expiration_date":"2031-02-21","underlying":"Class A Common Stock","underlying_shares":5000},"source":{"system":"sec-edgar","filing":"0001140361-21-007224","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036121007224/form4.xml","form_type":"4"}},{"id":3195804,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Stock Option","published_at":"2020-03-25T01:15:58.000Z","date":"2020-03-20","kind":"grant","acquired":true,"shares":10000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The option will vest and become exercisable as to 5,000 shares immediately prior to the 2020 Annual Meeting of Stockholders of the Issuer and the remaining 5,000 shares will vest and become exercisable immediately prior to the 2021 Annual Meeting of Stockholders of the Issuer, subject to continued service through each vesting date."}],"balance_after":10000,"derivative":{"exercise_price":22.07,"expiration_date":"2030-03-19","underlying":"Class A Common Stock","underlying_shares":10000},"source":{"system":"sec-edgar","filing":"0001140361-20-006753","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036120006753/form4.xml","form_type":"4"}},{"id":3427812,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2019-08-28T00:41:15.000Z","date":"2019-08-23","kind":"disposition_to_issuer","acquired":false,"shares":28661,"price":13.195,"value":378181.895,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"In connection with a public offering of Class A Common Stock by the Issuer, the reporting person and certain other stockholders entered into an Equity Purchase Agreement dated August 4, 2019 pursuant to which the reporting person and such stockholders agreed to sell, and the Issuer agreed to purchase, shares of the Issuer's Common Stock funded by the net proceeds, if any, from the Issuer's sale of Class A Common Stock pursuant to an exercise of the underwriters' over-allotment option. The transaction being reported relates to the reporting person's sale under the Equity Purchase Agreement. The obligations of the parties to the Equity Purchase Agreement became fixed and irrevocable as of the transaction date, which is the date of the closing of the underwriters' over-allotment option."}],"balance_after":285030,"source":{"system":"sec-edgar","filing":"0001654954-19-010059","document":"section16.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000165495419010059/section16.xml","form_type":"4"}},{"id":3548492,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19378,"kind":"person","name":"Dun Haiping","position":1,"cik":"0001721581","reported_name":"Dun Haiping","relationship":{"director":true}}],"security":"Stock Options","published_at":"2019-04-26T00:04:06.000Z","date":"2019-04-23","kind":"grant","acquired":true,"shares":20000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The option will vest and become exercisable as to 5,000 shares on April 23, 2020 and the remaining 15,000 shares will vest and become exercisable in equal monthly installments over the following 36 months, subject to continued service through each vesting date."}],"balance_after":20000,"derivative":{"exercise_price":16.81,"expiration_date":"2029-04-22","underlying":"Class A Common Stock","underlying_shares":20000},"source":{"system":"sec-edgar","filing":"0001654954-19-004826","document":"section16.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000165495419004826/section16.xml","form_type":"4"}}]}