{"transactions":[{"id":4614707,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":31958,"kind":"person","name":"Wang David H","position":1,"cik":"0001721580","reported_name":"Wang David H","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"officer_title":"See Remarks"}}],"security":"Stock Option","published_at":"2026-09-10T20:30:22.000Z","date":"2026-09-09","kind":"exercise","planned":true,"acquired":false,"shares":70000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F11","text":"The option is fully vested and exercisable."}],"balance_after":130000,"derivative":{"exercise_price":1,"expiration_date":"2026-12-27","underlying":"Class A Common Stock","underlying_shares":70000},"source":{"system":"sec-edgar","filing":"0001140361-26-036191","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":16,"url":"https://www.sec.gov/Archives/edgar/data/1721580/000114036126036191/form4.xml","form_type":"4"}},{"id":4614706,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":31958,"kind":"person","name":"Wang David H","position":1,"cik":"0001721580","reported_name":"Wang David H","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"officer_title":"See Remarks"}}],"security":"Stock Option","published_at":"2026-09-10T20:30:22.000Z","date":"2026-09-08","kind":"exercise","planned":true,"acquired":false,"shares":70000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F11","text":"The option is fully vested and exercisable."}],"balance_after":200000,"derivative":{"exercise_price":1,"expiration_date":"2026-12-27","underlying":"Class A Common Stock","underlying_shares":70000},"source":{"system":"sec-edgar","filing":"0001140361-26-036191","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":15,"url":"https://www.sec.gov/Archives/edgar/data/1721580/000114036126036191/form4.xml","form_type":"4"}},{"id":4614705,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":31958,"kind":"person","name":"Wang David H","position":1,"cik":"0001721580","reported_name":"Wang David H","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"officer_title":"See Remarks"}}],"security":"Class A Common Stock","published_at":"2026-09-10T20:30:22.000Z","date":"2026-09-09","kind":"sale","planned":true,"acquired":false,"shares":1100,"price":77.59,"value":85349.0,"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 June 5, 2026."},{"field":"price","element":"transactionPricePerShare","label":"F10","text":"The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $77.59 to $77.59, inclusive."}],"balance_after":802708,"source":{"system":"sec-edgar","filing":"0001140361-26-036191","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":11,"url":"https://www.sec.gov/Archives/edgar/data/1721580/000114036126036191/form4.xml","form_type":"4"}},{"id":4614704,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":31958,"kind":"person","name":"Wang David H","position":1,"cik":"0001721580","reported_name":"Wang David H","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"officer_title":"See Remarks"}}],"security":"Class A Common Stock","published_at":"2026-09-10T20:30:22.000Z","date":"2026-09-09","kind":"sale","planned":true,"acquired":false,"shares":4807,"price":76.73,"value":368841.11,"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 June 5, 2026."},{"field":"price","element":"transactionPricePerShare","label":"F9","text":"The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $76.38 to $77.35, inclusive."}],"balance_after":803808,"source":{"system":"sec-edgar","filing":"0001140361-26-036191","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":10,"url":"https://www.sec.gov/Archives/edgar/data/1721580/000114036126036191/form4.xml","form_type":"4"}},{"id":4614703,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":31958,"kind":"person","name":"Wang David H","position":1,"cik":"0001721580","reported_name":"Wang David H","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"officer_title":"See Remarks"}}],"security":"Class A Common Stock","published_at":"2026-09-10T20:30:22.000Z","date":"2026-09-09","kind":"sale","planned":true,"acquired":false,"shares":11666,"price":75.58,"value":881716.28,"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 June 5, 2026."},{"field":"price","element":"transactionPricePerShare","label":"F8","text":"The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $75.28 to $75.95, inclusive."}],"balance_after":808615,"source":{"system":"sec-edgar","filing":"0001140361-26-036191","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1721580/000114036126036191/form4.xml","form_type":"4"}},{"id":4614702,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":31958,"kind":"person","name":"Wang David H","position":1,"cik":"0001721580","reported_name":"Wang David H","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"officer_title":"See Remarks"}}],"security":"Class A Common Stock","published_at":"2026-09-10T20:30:22.000Z","date":"2026-09-09","kind":"sale","planned":true,"acquired":false,"shares":18934,"price":74.67,"value":1413801.78,"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 June 5, 2026."},{"field":"price","element":"transactionPricePerShare","label":"F7","text":"The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $74.26 to $75.22, inclusive."}],"balance_after":820281,"source":{"system":"sec-edgar","filing":"0001140361-26-036191","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1721580/000114036126036191/form4.xml","form_type":"4"}},{"id":4614701,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":31958,"kind":"person","name":"Wang David H","position":1,"cik":"0001721580","reported_name":"Wang David H","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"officer_title":"See Remarks"}}],"security":"Class A Common Stock","published_at":"2026-09-10T20:30:22.000Z","date":"2026-09-09","kind":"sale","planned":true,"acquired":false,"shares":33493,"price":73.8,"value":2471783.4,"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 June 5, 2026."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $73.26 to $74.21, inclusive."}],"balance_after":839215,"source":{"system":"sec-edgar","filing":"0001140361-26-036191","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1721580/000114036126036191/form4.xml","form_type":"4"}},{"id":4614700,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":31958,"kind":"person","name":"Wang David H","position":1,"cik":"0001721580","reported_name":"Wang David H","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"officer_title":"See Remarks"}}],"security":"Class A Common Stock","published_at":"2026-09-10T20:30:22.000Z","date":"2026-09-09","kind":"exercise","planned":true,"acquired":true,"shares":70000,"price":1,"value":70000.0,"ownership":{"direct":true},"balance_after":872708,"source":{"system":"sec-edgar","filing":"0001140361-26-036191","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1721580/000114036126036191/form4.xml","form_type":"4"}},{"id":4614699,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":31958,"kind":"person","name":"Wang David H","position":1,"cik":"0001721580","reported_name":"Wang David H","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"officer_title":"See Remarks"}}],"security":"Class A Common Stock","published_at":"2026-09-10T20:30:22.000Z","date":"2026-09-08","kind":"sale","planned":true,"acquired":false,"shares":1500,"price":78.57,"value":117855.0,"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 June 5, 2026."},{"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 $78.55 to $78.64, inclusive."}],"balance_after":802708,"source":{"system":"sec-edgar","filing":"0001140361-26-036191","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1721580/000114036126036191/form4.xml","form_type":"4"}},{"id":4614698,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":31958,"kind":"person","name":"Wang David H","position":1,"cik":"0001721580","reported_name":"Wang David H","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"officer_title":"See Remarks"}}],"security":"Class A Common Stock","published_at":"2026-09-10T20:30:22.000Z","date":"2026-09-08","kind":"sale","planned":true,"acquired":false,"shares":12323,"price":78.08,"value":962179.84,"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 June 5, 2026."},{"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 $77.52 to $78.48, inclusive."}],"balance_after":804208,"source":{"system":"sec-edgar","filing":"0001140361-26-036191","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1721580/000114036126036191/form4.xml","form_type":"4"}},{"id":4614697,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":31958,"kind":"person","name":"Wang David H","position":1,"cik":"0001721580","reported_name":"Wang David H","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"officer_title":"See Remarks"}}],"security":"Class A Common Stock","published_at":"2026-09-10T20:30:22.000Z","date":"2026-09-08","kind":"sale","planned":true,"acquired":false,"shares":51374,"price":77.15,"value":3963504.1,"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 June 5, 2026."},{"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 $76.52 to $77.5, inclusive."}],"balance_after":816531,"source":{"system":"sec-edgar","filing":"0001140361-26-036191","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1721580/000114036126036191/form4.xml","form_type":"4"}},{"id":4614696,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":31958,"kind":"person","name":"Wang David H","position":1,"cik":"0001721580","reported_name":"Wang David H","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"officer_title":"See Remarks"}}],"security":"Class A Common Stock","published_at":"2026-09-10T20:30:22.000Z","date":"2026-09-08","kind":"sale","planned":true,"acquired":false,"shares":4803,"price":75.99,"value":364979.97,"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 June 5, 2026."},{"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 $75.52 to $76.41, 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), (5), (6), (7), (8), (9), and (10) to this Form 4."}],"balance_after":867905,"source":{"system":"sec-edgar","filing":"0001140361-26-036191","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1721580/000114036126036191/form4.xml","form_type":"4"}},{"id":4614695,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":31958,"kind":"person","name":"Wang David H","position":1,"cik":"0001721580","reported_name":"Wang David H","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"officer_title":"See Remarks"}}],"security":"Class A Common Stock","published_at":"2026-09-10T20:30:22.000Z","date":"2026-09-08","kind":"exercise","planned":true,"acquired":true,"shares":70000,"price":1,"value":70000.0,"ownership":{"direct":true},"balance_after":872708,"source":{"system":"sec-edgar","filing":"0001140361-26-036191","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1721580/000114036126036191/form4.xml","form_type":"4"}},{"id":674936,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":12695,"kind":"person","name":"Pappis Charles C","position":1,"cik":"0001475345","reported_name":"Pappis Charles C","relationship":{"director":true}}],"security":"Restricted Stock Units","published_at":"2026-08-27T01:30:15.000Z","date":"2026-08-12","kind":"grant","planned":false,"acquired":true,"shares":728,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"The price per restricted stock unit is based on the average closing market price of the Issuer's common stock for the 30 trading days preceding the grant day."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The restricted stock units should be vested immediately prior to the 2027 annual meeting of stockholders of the issuer, subject to continued service."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The restricted stock units should be vested immediately prior to the 2027 annual meeting of stockholders of the issuer, subject to continued service."}],"balance_after":728,"derivative":{"exercise_price":96.13,"underlying":"Class A Common Stock","underlying_shares":728},"source":{"system":"sec-edgar","filing":"0001140361-26-034528","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1475345/000114036126034528/form4.xml","form_type":"4"}},{"id":674935,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":12695,"kind":"person","name":"Pappis Charles C","position":1,"cik":"0001475345","reported_name":"Pappis Charles C","relationship":{"director":true}}],"security":"Stock Option","published_at":"2026-08-27T01:30:15.000Z","date":"2026-08-12","kind":"grant","planned":false,"acquired":true,"shares":6400,"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 2027 annual meeting of stockholders of the issuer, subject to continued service through the vesting date."}],"balance_after":6400,"derivative":{"exercise_price":81.26,"expiration_date":"2036-08-11","underlying":"Class A Common Stock","underlying_shares":6400},"source":{"system":"sec-edgar","filing":"0001140361-26-034528","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1475345/000114036126034528/form4.xml","form_type":"4"}},{"id":675049,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19496,"kind":"person","name":"Liu Tracy","position":1,"cik":"0001721299","reported_name":"Liu Tracy","relationship":{"director":true}}],"security":"Restricted Stock Units","published_at":"2026-08-27T01:30:13.000Z","date":"2026-08-12","kind":"grant","planned":false,"acquired":true,"shares":728,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"The price per restricted stock unit is based on the average closing market price of the Issuer's common stock for the 30 trading days preceding the grant day."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The restricted stock units should be vested immediately prior to the 2027 annual meeting of stockholders of the issuer, subject to continued service."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The restricted stock units should be vested immediately prior to the 2027 annual meeting of stockholders of the issuer, subject to continued service."}],"balance_after":728,"derivative":{"exercise_price":96.13,"underlying":"Class A Common Stock","underlying_shares":728},"source":{"system":"sec-edgar","filing":"0001140361-26-034527","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1721299/000114036126034527/form4.xml","form_type":"4"}},{"id":675048,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19496,"kind":"person","name":"Liu Tracy","position":1,"cik":"0001721299","reported_name":"Liu Tracy","relationship":{"director":true}}],"security":"Stock Option","published_at":"2026-08-27T01:30:13.000Z","date":"2026-08-12","kind":"grant","planned":false,"acquired":true,"shares":6400,"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 2027 annual meeting of stockholders of the issuer, subject to continued service through the vesting date."}],"balance_after":6400,"derivative":{"exercise_price":81.26,"expiration_date":"2036-08-11","underlying":"Class A Common Stock","underlying_shares":6400},"source":{"system":"sec-edgar","filing":"0001140361-26-034527","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1721299/000114036126034527/form4.xml","form_type":"4"}},{"id":674613,"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":"Restricted Stock Units","published_at":"2026-08-27T01:30:11.000Z","date":"2026-08-12","kind":"grant","planned":false,"acquired":true,"shares":728,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"The price per restricted stock unit is based on the average closing market price of the Issuer's common stock for the 30 trading days preceding the grant day."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The restricted stock units should be vested immediately prior to the 2027 annual meeting of stockholders of the issuer, subject to continued service."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The restricted stock units should be vested immediately prior to the 2027 annual meeting of stockholders of the issuer, subject to continued service."}],"balance_after":728,"derivative":{"exercise_price":96.13,"underlying":"Class A Common Stock","underlying_shares":728},"source":{"system":"sec-edgar","filing":"0001140361-26-034526","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036126034526/form4.xml","form_type":"4"}},{"id":674612,"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":"2026-08-27T01:30:11.000Z","date":"2026-08-12","kind":"grant","planned":false,"acquired":true,"shares":6400,"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 2027 annual meeting of stockholders of the issuer, subject to continued service through the vesting date."}],"balance_after":6400,"derivative":{"exercise_price":81.26,"expiration_date":"2036-08-11","underlying":"Class A Common Stock","underlying_shares":6400},"source":{"system":"sec-edgar","filing":"0001140361-26-034526","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036126034526/form4.xml","form_type":"4"}},{"id":678455,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":20733,"kind":"person","name":"McKechnie Mark","position":1,"cik":"0001775007","reported_name":"McKechnie Mark","relationship":{"officer":true,"officer_title":"See Remarks"}}],"security":"Stock Option","published_at":"2026-08-22T01:30:20.000Z","date":"2026-08-20","kind":"exercise","planned":true,"acquired":false,"shares":25000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"The option is fully vested and exercisable."}],"balance_after":215000,"derivative":{"exercise_price":13.89,"expiration_date":"2033-08-09","underlying":"Class A Common Stock","underlying_shares":25000},"source":{"system":"sec-edgar","filing":"0001140361-26-034070","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036126034070/form4.xml","form_type":"4"}},{"id":678454,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":20733,"kind":"person","name":"McKechnie Mark","position":1,"cik":"0001775007","reported_name":"McKechnie Mark","relationship":{"officer":true,"officer_title":"See Remarks"}}],"security":"Stock Option","published_at":"2026-08-22T01:30:20.000Z","date":"2026-08-20","kind":"exercise","planned":true,"acquired":false,"shares":30199,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"The option is fully vested and exercisable."}],"balance_after":31250,"derivative":{"exercise_price":19.49,"expiration_date":"2032-08-11","underlying":"Class A Common Stock","underlying_shares":30199},"source":{"system":"sec-edgar","filing":"0001140361-26-034070","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036126034070/form4.xml","form_type":"4"}},{"id":678453,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":20733,"kind":"person","name":"McKechnie Mark","position":1,"cik":"0001775007","reported_name":"McKechnie Mark","relationship":{"officer":true,"officer_title":"See Remarks"}}],"security":"Class A Common Stock","published_at":"2026-08-22T01:30:20.000Z","date":"2026-08-20","kind":"sale","planned":true,"acquired":false,"shares":11209,"price":77.89,"value":873069.01,"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 21, 2026."},{"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 $77.84 to $78.4, inclusive."}],"balance_after":900,"source":{"system":"sec-edgar","filing":"0001140361-26-034070","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036126034070/form4.xml","form_type":"4"}},{"id":678452,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":20733,"kind":"person","name":"McKechnie Mark","position":1,"cik":"0001775007","reported_name":"McKechnie Mark","relationship":{"officer":true,"officer_title":"See Remarks"}}],"security":"Class A Common Stock","published_at":"2026-08-22T01:30:20.000Z","date":"2026-08-20","kind":"sale","planned":true,"acquired":false,"shares":30365,"price":77.45,"value":2351769.25,"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 21, 2026."},{"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 $76.81 to $77.79, inclusive."}],"balance_after":12109,"source":{"system":"sec-edgar","filing":"0001140361-26-034070","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036126034070/form4.xml","form_type":"4"}},{"id":678451,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":20733,"kind":"person","name":"McKechnie Mark","position":1,"cik":"0001775007","reported_name":"McKechnie Mark","relationship":{"officer":true,"officer_title":"See Remarks"}}],"security":"Class A Common Stock","published_at":"2026-08-22T01:30:20.000Z","date":"2026-08-20","kind":"sale","planned":true,"acquired":false,"shares":13625,"price":76.34,"value":1040132.5,"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 21, 2026."},{"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 $75.76 to $76.68, 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":42474,"source":{"system":"sec-edgar","filing":"0001140361-26-034070","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036126034070/form4.xml","form_type":"4"}},{"id":678450,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":20733,"kind":"person","name":"McKechnie Mark","position":1,"cik":"0001775007","reported_name":"McKechnie Mark","relationship":{"officer":true,"officer_title":"See Remarks"}}],"security":"Class A Common Stock","published_at":"2026-08-22T01:30:20.000Z","date":"2026-08-20","kind":"exercise","planned":true,"acquired":true,"shares":25000,"price":13.89,"value":347250.0,"ownership":{"direct":true},"balance_after":56099,"source":{"system":"sec-edgar","filing":"0001140361-26-034070","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036126034070/form4.xml","form_type":"4"}},{"id":678449,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":20733,"kind":"person","name":"McKechnie Mark","position":1,"cik":"0001775007","reported_name":"McKechnie Mark","relationship":{"officer":true,"officer_title":"See Remarks"}}],"security":"Class A Common Stock","published_at":"2026-08-22T01:30:20.000Z","date":"2026-08-20","kind":"exercise","planned":true,"acquired":true,"shares":30199,"price":19.49,"value":588578.51,"ownership":{"direct":true},"balance_after":31099,"source":{"system":"sec-edgar","filing":"0001140361-26-034070","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036126034070/form4.xml","form_type":"4"}},{"id":679612,"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":"2026-08-20T20:30:14.000Z","date":"2026-08-18","kind":"exercise","planned":true,"acquired":false,"shares":5000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"The option is fully vested and exercisable."}],"balance_after":45000,"derivative":{"exercise_price":5.6,"expiration_date":"2029-04-22","underlying":"Class A Common Stock","underlying_shares":5000},"source":{"system":"sec-edgar","filing":"0001140361-26-033892","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036126033892/form4.xml","form_type":"4"}},{"id":679611,"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":400,"price":82.17,"value":32868.0,"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":"F4","text":"The price reported in Column 4 is a weighted average price. 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":714372,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":31958,"kind":"person","name":"Wang David H","position":1,"cik":"0001721580","reported_name":"Wang David H","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"officer_title":"See Remarks"}}],"security":"Restricted Stock Units","published_at":"2026-07-07T01:00:15.000Z","date":"2026-05-13","kind":"grant","planned":false,"acquired":true,"shares":6208,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"By Sophia Wang, daughter of David H. Wang"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit represents a contingent right to receive one share of ACMR common stock."},{"field":"shares","element":"transactionShares","label":"F2","text":"The number of RSUs granted will be determined by dividing the applicable annual grant value by the 30-day lookback average fair market value of the Issuer's common stock, determined to be $51.54 per share."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The restricted stock units vest in four equal annual installments beginning May 13, 2027."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The restricted stock units vest in four equal annual installments beginning May 13, 2027."}],"balance_after":6208,"derivative":{"underlying":"Class A Common Stock","underlying_shares":6208},"source":{"system":"sec-edgar","filing":"0001140361-26-027691","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036126027691/form4.xml","form_type":"4"}},{"id":748038,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":40942,"kind":"person","name":"Cheav Sotheara","position":1,"cik":"0001721279","reported_name":"Cheav Sotheara","relationship":{"officer":true,"officer_title":"See remarks"}}],"security":"Stock Option","published_at":"2026-06-06T01:00:24.000Z","date":"2026-06-05","kind":"exercise","planned":true,"acquired":false,"shares":5399,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F9","text":"The option is fully vested and exercisable."}],"balance_after":37500,"derivative":{"exercise_price":13.89,"expiration_date":"2033-08-09","underlying":"Class A Common Stock","underlying_shares":5399},"source":{"system":"sec-edgar","filing":"0001140361-26-024322","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":11,"url":"https://www.sec.gov/Archives/edgar/data/1721279/000114036126024322/form4.xml","form_type":"4"}},{"id":748037,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":40942,"kind":"person","name":"Cheav Sotheara","position":1,"cik":"0001721279","reported_name":"Cheav Sotheara","relationship":{"officer":true,"officer_title":"See remarks"}}],"security":"Stock Option","published_at":"2026-06-06T01:00:24.000Z","date":"2026-06-04","kind":"exercise","planned":true,"acquired":false,"shares":13351,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F9","text":"The option is fully vested and exercisable."}],"balance_after":42899,"derivative":{"exercise_price":13.89,"expiration_date":"2033-08-09","underlying":"Class A Common Stock","underlying_shares":13351},"source":{"system":"sec-edgar","filing":"0001140361-26-024322","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":10,"url":"https://www.sec.gov/Archives/edgar/data/1721279/000114036126024322/form4.xml","form_type":"4"}},{"id":748036,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":40942,"kind":"person","name":"Cheav Sotheara","position":1,"cik":"0001721279","reported_name":"Cheav Sotheara","relationship":{"officer":true,"officer_title":"See remarks"}}],"security":"Class A Common Stock","published_at":"2026-06-06T01:00:24.000Z","date":"2026-06-05","kind":"sale","planned":true,"acquired":false,"shares":1647,"price":85.41,"value":140670.27,"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 March 5, 2026."},{"field":"price","element":"transactionPricePerShare","label":"F8","text":"The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $85.27 to $85.72, inclusive."}],"balance_after":100002,"source":{"system":"sec-edgar","filing":"0001140361-26-024322","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1721279/000114036126024322/form4.xml","form_type":"4"}},{"id":748035,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":40942,"kind":"person","name":"Cheav Sotheara","position":1,"cik":"0001721279","reported_name":"Cheav Sotheara","relationship":{"officer":true,"officer_title":"See remarks"}}],"security":"Class A Common Stock","published_at":"2026-06-06T01:00:24.000Z","date":"2026-06-05","kind":"sale","planned":true,"acquired":false,"shares":400,"price":84.01,"value":33604.0,"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 March 5, 2026."},{"field":"price","element":"transactionPricePerShare","label":"F7","text":"The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $83.85 to $84.5, inclusive."}],"balance_after":101649,"source":{"system":"sec-edgar","filing":"0001140361-26-024322","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1721279/000114036126024322/form4.xml","form_type":"4"}},{"id":748034,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":40942,"kind":"person","name":"Cheav Sotheara","position":1,"cik":"0001721279","reported_name":"Cheav Sotheara","relationship":{"officer":true,"officer_title":"See remarks"}}],"security":"Class A Common Stock","published_at":"2026-06-06T01:00:24.000Z","date":"2026-06-05","kind":"sale","planned":true,"acquired":false,"shares":968,"price":82.61,"value":79966.48,"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 March 5, 2026."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $82.38 to $82.89, inclusive."}],"balance_after":102049,"source":{"system":"sec-edgar","filing":"0001140361-26-024322","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1721279/000114036126024322/form4.xml","form_type":"4"}},{"id":748033,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":40942,"kind":"person","name":"Cheav Sotheara","position":1,"cik":"0001721279","reported_name":"Cheav Sotheara","relationship":{"officer":true,"officer_title":"See remarks"}}],"security":"Class A Common Stock","published_at":"2026-06-06T01:00:24.000Z","date":"2026-06-05","kind":"sale","planned":true,"acquired":false,"shares":2384,"price":81.73,"value":194844.32,"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 March 5, 2026."},{"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 $81.22 to $82.07, inclusive."}],"balance_after":103017,"source":{"system":"sec-edgar","filing":"0001140361-26-024322","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1721279/000114036126024322/form4.xml","form_type":"4"}},{"id":748032,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":40942,"kind":"person","name":"Cheav Sotheara","position":1,"cik":"0001721279","reported_name":"Cheav Sotheara","relationship":{"officer":true,"officer_title":"See remarks"}}],"security":"Class A Common Stock","published_at":"2026-06-06T01:00:24.000Z","date":"2026-06-05","kind":"exercise","planned":true,"acquired":true,"shares":5399,"price":13.89,"value":74992.11,"ownership":{"direct":true},"balance_after":105401,"source":{"system":"sec-edgar","filing":"0001140361-26-024322","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1721279/000114036126024322/form4.xml","form_type":"4"}},{"id":748031,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":40942,"kind":"person","name":"Cheav Sotheara","position":1,"cik":"0001721279","reported_name":"Cheav Sotheara","relationship":{"officer":true,"officer_title":"See remarks"}}],"security":"Class A Common Stock","published_at":"2026-06-06T01:00:24.000Z","date":"2026-06-04","kind":"sale","planned":true,"acquired":false,"shares":2839,"price":85.77,"value":243501.03,"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 March 5, 2026."},{"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 $85.7 to $86.19, inclusive."}],"balance_after":100002,"source":{"system":"sec-edgar","filing":"0001140361-26-024322","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1721279/000114036126024322/form4.xml","form_type":"4"}},{"id":748030,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":40942,"kind":"person","name":"Cheav Sotheara","position":1,"cik":"0001721279","reported_name":"Cheav Sotheara","relationship":{"officer":true,"officer_title":"See remarks"}}],"security":"Class A Common Stock","published_at":"2026-06-06T01:00:24.000Z","date":"2026-06-04","kind":"sale","planned":true,"acquired":false,"shares":9212,"price":85.11,"value":784033.32,"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 March 5, 2026."},{"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 $84.63 to $85.6, inclusive."}],"balance_after":102841,"source":{"system":"sec-edgar","filing":"0001140361-26-024322","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1721279/000114036126024322/form4.xml","form_type":"4"}},{"id":748029,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":40942,"kind":"person","name":"Cheav Sotheara","position":1,"cik":"0001721279","reported_name":"Cheav Sotheara","relationship":{"officer":true,"officer_title":"See remarks"}}],"security":"Class A Common Stock","published_at":"2026-06-06T01:00:24.000Z","date":"2026-06-04","kind":"sale","planned":true,"acquired":false,"shares":1300,"price":84.08,"value":109304.0,"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 March 5, 2026."},{"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 $83.61 to $84.4, 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), (5), (6), (7), and (8) to this Form 4."}],"balance_after":112053,"source":{"system":"sec-edgar","filing":"0001140361-26-024322","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1721279/000114036126024322/form4.xml","form_type":"4"}},{"id":748028,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":40942,"kind":"person","name":"Cheav Sotheara","position":1,"cik":"0001721279","reported_name":"Cheav Sotheara","relationship":{"officer":true,"officer_title":"See remarks"}}],"security":"Class A Common Stock","published_at":"2026-06-06T01:00:24.000Z","date":"2026-06-04","kind":"exercise","planned":true,"acquired":true,"shares":13351,"price":13.89,"value":185445.39,"ownership":{"direct":true},"balance_after":113353,"source":{"system":"sec-edgar","filing":"0001140361-26-024322","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1721279/000114036126024322/form4.xml","form_type":"4"}},{"id":747447,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":31958,"kind":"person","name":"Wang David H","position":1,"cik":"0001721580","reported_name":"Wang David H","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"officer_title":"See Remarks"}}],"security":"Stock Option","published_at":"2026-06-05T20:30:29.000Z","date":"2026-06-04","kind":"exercise","planned":true,"acquired":false,"shares":40002,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F13","text":"The option is fully vested and exercisable."}],"balance_after":270000,"derivative":{"exercise_price":1,"expiration_date":"2026-12-27","underlying":"Class A Common Stock","underlying_shares":40002},"source":{"system":"sec-edgar","filing":"0001140361-26-024280","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":19,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036126024280/form4.xml","form_type":"4"}},{"id":747446,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":31958,"kind":"person","name":"Wang David H","position":1,"cik":"0001721580","reported_name":"Wang David H","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"officer_title":"See Remarks"}}],"security":"Stock Option","published_at":"2026-06-05T20:30:29.000Z","date":"2026-06-03","kind":"exercise","planned":true,"acquired":false,"shares":60000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F13","text":"The option is fully vested and exercisable."}],"balance_after":310002,"derivative":{"exercise_price":1,"expiration_date":"2026-12-27","underlying":"Class A Common Stock","underlying_shares":60000},"source":{"system":"sec-edgar","filing":"0001140361-26-024280","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":18,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036126024280/form4.xml","form_type":"4"}},{"id":747445,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":31958,"kind":"person","name":"Wang David H","position":1,"cik":"0001721580","reported_name":"Wang David H","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"officer_title":"See Remarks"}}],"security":"Class A Common Stock","published_at":"2026-06-05T20:30:29.000Z","date":"2026-06-04","kind":"sale","planned":true,"acquired":false,"shares":826,"price":87.91,"value":72613.66,"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 November 29, 2024."},{"field":"price","element":"transactionPricePerShare","label":"F12","text":"The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $87.77 to $88.01, inclusive."}],"balance_after":802708,"source":{"system":"sec-edgar","filing":"0001140361-26-024280","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":13,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036126024280/form4.xml","form_type":"4"}},{"id":747444,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":31958,"kind":"person","name":"Wang David H","position":1,"cik":"0001721580","reported_name":"Wang David H","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"officer_title":"See Remarks"}}],"security":"Class A Common Stock","published_at":"2026-06-05T20:30:29.000Z","date":"2026-06-04","kind":"sale","planned":true,"acquired":false,"shares":8581,"price":87.13,"value":747662.53,"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 November 29, 2024."},{"field":"price","element":"transactionPricePerShare","label":"F11","text":"The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $86.73 to $87.66, inclusive."}],"balance_after":803534,"source":{"system":"sec-edgar","filing":"0001140361-26-024280","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":12,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036126024280/form4.xml","form_type":"4"}},{"id":747443,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":31958,"kind":"person","name":"Wang David H","position":1,"cik":"0001721580","reported_name":"Wang David H","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"officer_title":"See Remarks"}}],"security":"Class A Common Stock","published_at":"2026-06-05T20:30:29.000Z","date":"2026-06-04","kind":"sale","planned":true,"acquired":false,"shares":10992,"price":86.07,"value":946081.44,"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 November 29, 2024."},{"field":"price","element":"transactionPricePerShare","label":"F10","text":"The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $85.7 to $86.57, inclusive."}],"balance_after":812115,"source":{"system":"sec-edgar","filing":"0001140361-26-024280","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":11,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036126024280/form4.xml","form_type":"4"}},{"id":747442,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":31958,"kind":"person","name":"Wang David H","position":1,"cik":"0001721580","reported_name":"Wang David H","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"officer_title":"See Remarks"}}],"security":"Class A Common Stock","published_at":"2026-06-05T20:30:29.000Z","date":"2026-06-04","kind":"sale","planned":true,"acquired":false,"shares":17543,"price":85.11,"value":1493084.73,"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 November 29, 2024."},{"field":"price","element":"transactionPricePerShare","label":"F9","text":"The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $84.62 to $85.6, inclusive."}],"balance_after":823107,"source":{"system":"sec-edgar","filing":"0001140361-26-024280","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":10,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036126024280/form4.xml","form_type":"4"}},{"id":747441,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":31958,"kind":"person","name":"Wang David H","position":1,"cik":"0001721580","reported_name":"Wang David H","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"officer_title":"See Remarks"}}],"security":"Class A Common Stock","published_at":"2026-06-05T20:30:29.000Z","date":"2026-06-04","kind":"sale","planned":true,"acquired":false,"shares":2060,"price":83.86,"value":172751.6,"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 November 29, 2024."},{"field":"price","element":"transactionPricePerShare","label":"F8","text":"The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $83.61 to $84.24, inclusive."}],"balance_after":840650,"source":{"system":"sec-edgar","filing":"0001140361-26-024280","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036126024280/form4.xml","form_type":"4"}},{"id":747440,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":31958,"kind":"person","name":"Wang David H","position":1,"cik":"0001721580","reported_name":"Wang David H","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"officer_title":"See Remarks"}}],"security":"Class A Common Stock","published_at":"2026-06-05T20:30:29.000Z","date":"2026-06-04","kind":"exercise","planned":true,"acquired":true,"shares":40002,"price":1,"value":40002.0,"ownership":{"direct":true},"balance_after":842710,"source":{"system":"sec-edgar","filing":"0001140361-26-024280","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036126024280/form4.xml","form_type":"4"}},{"id":747439,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":31958,"kind":"person","name":"Wang David H","position":1,"cik":"0001721580","reported_name":"Wang David H","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"officer_title":"See Remarks"}}],"security":"Class A Common Stock","published_at":"2026-06-05T20:30:29.000Z","date":"2026-06-03","kind":"sale","planned":true,"acquired":false,"shares":1187,"price":93.04,"value":110438.48,"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 November 29, 2024."},{"field":"price","element":"transactionPricePerShare","label":"F7","text":"The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $93.02 to $93.39, inclusive."}],"balance_after":802708,"source":{"system":"sec-edgar","filing":"0001140361-26-024280","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036126024280/form4.xml","form_type":"4"}},{"id":747438,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":31958,"kind":"person","name":"Wang David H","position":1,"cik":"0001721580","reported_name":"Wang David H","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"officer_title":"See Remarks"}}],"security":"Class A Common Stock","published_at":"2026-06-05T20:30:29.000Z","date":"2026-06-03","kind":"sale","planned":true,"acquired":false,"shares":5843,"price":92.38,"value":539776.34,"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 November 29, 2024."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $92.01 to $92.8, inclusive."}],"balance_after":803895,"source":{"system":"sec-edgar","filing":"0001140361-26-024280","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036126024280/form4.xml","form_type":"4"}},{"id":747437,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":31958,"kind":"person","name":"Wang David H","position":1,"cik":"0001721580","reported_name":"Wang David H","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"officer_title":"See Remarks"}}],"security":"Class A Common Stock","published_at":"2026-06-05T20:30:29.000Z","date":"2026-06-03","kind":"sale","planned":true,"acquired":false,"shares":9925,"price":90.78,"value":900991.5,"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 November 29, 2024."},{"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 $90.24 to $91.22, inclusive."}],"balance_after":809738,"source":{"system":"sec-edgar","filing":"0001140361-26-024280","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036126024280/form4.xml","form_type":"4"}},{"id":747436,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":31958,"kind":"person","name":"Wang David H","position":1,"cik":"0001721580","reported_name":"Wang David H","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"officer_title":"See Remarks"}}],"security":"Class A Common Stock","published_at":"2026-06-05T20:30:29.000Z","date":"2026-06-03","kind":"sale","planned":true,"acquired":false,"shares":32450,"price":89.84,"value":2915308.0,"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 November 29, 2024."},{"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 $89.24 to $90.22, inclusive."}],"balance_after":819663,"source":{"system":"sec-edgar","filing":"0001140361-26-024280","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036126024280/form4.xml","form_type":"4"}},{"id":747435,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":31958,"kind":"person","name":"Wang David H","position":1,"cik":"0001721580","reported_name":"Wang David H","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"officer_title":"See Remarks"}}],"security":"Class A Common Stock","published_at":"2026-06-05T20:30:29.000Z","date":"2026-06-03","kind":"sale","planned":true,"acquired":false,"shares":6295,"price":88.98,"value":560129.1,"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 November 29, 2024."},{"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 $88.24 to $89.22, inclusive."}],"balance_after":852113,"source":{"system":"sec-edgar","filing":"0001140361-26-024280","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036126024280/form4.xml","form_type":"4"}},{"id":747434,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":31958,"kind":"person","name":"Wang David H","position":1,"cik":"0001721580","reported_name":"Wang David H","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"officer_title":"See Remarks"}}],"security":"Class A Common Stock","published_at":"2026-06-05T20:30:29.000Z","date":"2026-06-03","kind":"sale","planned":true,"acquired":false,"shares":4300,"price":87.57,"value":376551.0,"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 November 29, 2024."},{"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 $87.22 to $88.04, 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), (5), (6), (7), (8), (9), (10), (11), and (12) to this Form 4."}],"balance_after":858408,"source":{"system":"sec-edgar","filing":"0001140361-26-024280","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036126024280/form4.xml","form_type":"4"}},{"id":747433,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":31958,"kind":"person","name":"Wang David H","position":1,"cik":"0001721580","reported_name":"Wang David H","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"officer_title":"See Remarks"}}],"security":"Class A Common Stock","published_at":"2026-06-05T20:30:29.000Z","date":"2026-06-03","kind":"exercise","planned":true,"acquired":true,"shares":60000,"price":1,"value":60000.0,"ownership":{"direct":true},"balance_after":862708,"source":{"system":"sec-edgar","filing":"0001140361-26-024280","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036126024280/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":803679,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":12695,"kind":"person","name":"Pappis Charles C","position":1,"cik":"0001475345","reported_name":"Pappis Charles C","relationship":{"director":true}}],"security":"Stock Option","published_at":"2026-04-21T20:30:08.000Z","date":"2026-04-17","kind":"exercise","planned":true,"acquired":false,"shares":5000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On April 17, 2026, the reporting person exercised a previously issued stock option to purchase 5,000 shares of Class A Common Stock of the Issuer."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The option is fully vested and exercisable."}],"balance_after":0,"derivative":{"exercise_price":29.18,"expiration_date":"2035-03-14","underlying":"Class A Common Stock","underlying_shares":5000},"source":{"system":"sec-edgar","filing":"0001140361-26-015915","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1475345/000114036126015915/form4.xml","form_type":"4"}},{"id":803678,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":12695,"kind":"person","name":"Pappis Charles C","position":1,"cik":"0001475345","reported_name":"Pappis Charles C","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2026-04-21T20:30:08.000Z","date":"2026-04-17","kind":"sale","planned":true,"acquired":false,"shares":5000,"price":52,"value":260000.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 20, 2025."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0001140361-26-015915","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1475345/000114036126015915/form4.xml","form_type":"4"}},{"id":803677,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":12695,"kind":"person","name":"Pappis Charles C","position":1,"cik":"0001475345","reported_name":"Pappis Charles C","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2026-04-21T20:30:08.000Z","date":"2026-04-17","kind":"exercise","planned":true,"acquired":true,"shares":5000,"price":29.18,"value":145900.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On April 17, 2026, the reporting person exercised a previously issued stock option to purchase 5,000 shares of Class A Common Stock of the Issuer."}],"balance_after":5000,"source":{"system":"sec-edgar","filing":"0001140361-26-015915","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1475345/000114036126015915/form4.xml","form_type":"4"}},{"id":843497,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":20733,"kind":"person","name":"McKechnie Mark","position":1,"cik":"0001775007","reported_name":"McKechnie Mark","relationship":{"officer":true,"officer_title":"See Remarks"}}],"security":"Stock Option","published_at":"2026-03-14T01:30:44.000Z","date":"2026-03-12","kind":"exercise","planned":true,"acquired":false,"shares":38551,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F8","text":"The option is fully vested and exercisable."}],"balance_after":61449,"derivative":{"exercise_price":19.49,"expiration_date":"2032-08-11","underlying":"Class A Common Stock","underlying_shares":38551},"source":{"system":"sec-edgar","filing":"0001140361-26-009456","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":10,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036126009456/form4.xml","form_type":"4"}},{"id":843496,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":20733,"kind":"person","name":"McKechnie Mark","position":1,"cik":"0001775007","reported_name":"McKechnie Mark","relationship":{"officer":true,"officer_title":"See Remarks"}}],"security":"Stock Option","published_at":"2026-03-14T01:30:44.000Z","date":"2026-03-12","kind":"exercise","planned":true,"acquired":false,"shares":60000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F8","text":"The option is fully vested and exercisable."}],"balance_after":240000,"derivative":{"exercise_price":13.89,"expiration_date":"2033-08-09","underlying":"Class A Common Stock","underlying_shares":60000},"source":{"system":"sec-edgar","filing":"0001140361-26-009456","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036126009456/form4.xml","form_type":"4"}},{"id":843495,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":20733,"kind":"person","name":"McKechnie Mark","position":1,"cik":"0001775007","reported_name":"McKechnie Mark","relationship":{"officer":true,"officer_title":"See Remarks"}}],"security":"Class A Common Stock","published_at":"2026-03-14T01:30:44.000Z","date":"2026-03-12","kind":"sale","planned":true,"acquired":false,"shares":564,"price":46.57,"value":26265.48,"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 27, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F7","text":"The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $46.45 to $46.59, inclusive."}],"balance_after":900,"source":{"system":"sec-edgar","filing":"0001140361-26-009456","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036126009456/form4.xml","form_type":"4"}},{"id":843494,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":20733,"kind":"person","name":"McKechnie Mark","position":1,"cik":"0001775007","reported_name":"McKechnie Mark","relationship":{"officer":true,"officer_title":"See Remarks"}}],"security":"Class A Common Stock","published_at":"2026-03-14T01:30:44.000Z","date":"2026-03-12","kind":"sale","planned":true,"acquired":false,"shares":29348,"price":45.74,"value":1342377.52,"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 27, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $45.40 to $46.39, inclusive."}],"balance_after":1464,"source":{"system":"sec-edgar","filing":"0001140361-26-009456","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036126009456/form4.xml","form_type":"4"}},{"id":843493,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":20733,"kind":"person","name":"McKechnie Mark","position":1,"cik":"0001775007","reported_name":"McKechnie Mark","relationship":{"officer":true,"officer_title":"See Remarks"}}],"security":"Class A Common Stock","published_at":"2026-03-14T01:30:44.000Z","date":"2026-03-12","kind":"sale","planned":true,"acquired":false,"shares":8639,"price":44.94,"value":388236.66,"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 27, 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 $44.40 to $45.39, inclusive."}],"balance_after":30812,"source":{"system":"sec-edgar","filing":"0001140361-26-009456","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036126009456/form4.xml","form_type":"4"}},{"id":843492,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":20733,"kind":"person","name":"McKechnie Mark","position":1,"cik":"0001775007","reported_name":"McKechnie Mark","relationship":{"officer":true,"officer_title":"See Remarks"}}],"security":"Class A Common Stock","published_at":"2026-03-14T01:30:44.000Z","date":"2026-03-12","kind":"exercise","planned":true,"acquired":true,"shares":38551,"price":19.49,"value":751358.99,"ownership":{"direct":true},"balance_after":39451,"source":{"system":"sec-edgar","filing":"0001140361-26-009456","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036126009456/form4.xml","form_type":"4"}},{"id":843491,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":20733,"kind":"person","name":"McKechnie Mark","position":1,"cik":"0001775007","reported_name":"McKechnie Mark","relationship":{"officer":true,"officer_title":"See Remarks"}}],"security":"Class A Common Stock","published_at":"2026-03-14T01:30:44.000Z","date":"2026-03-12","kind":"sale","planned":true,"acquired":false,"shares":982,"price":46.55,"value":45712.1,"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 27, 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 $46.39 to $46.59, inclusive."}],"balance_after":900,"source":{"system":"sec-edgar","filing":"0001140361-26-009456","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036126009456/form4.xml","form_type":"4"}},{"id":843490,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":20733,"kind":"person","name":"McKechnie Mark","position":1,"cik":"0001775007","reported_name":"McKechnie Mark","relationship":{"officer":true,"officer_title":"See Remarks"}}],"security":"Class A Common Stock","published_at":"2026-03-14T01:30:44.000Z","date":"2026-03-12","kind":"sale","planned":true,"acquired":false,"shares":47108,"price":45.74,"value":2154719.92,"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 August 27, 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 $45.37 to $46.36, inclusive."}],"balance_after":1882,"source":{"system":"sec-edgar","filing":"0001140361-26-009456","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036126009456/form4.xml","form_type":"4"}},{"id":843489,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":20733,"kind":"person","name":"McKechnie Mark","position":1,"cik":"0001775007","reported_name":"McKechnie Mark","relationship":{"officer":true,"officer_title":"See Remarks"}}],"security":"Class A Common Stock","published_at":"2026-03-14T01:30:44.000Z","date":"2026-03-12","kind":"sale","planned":true,"acquired":false,"shares":11910,"price":44.89,"value":534639.9,"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 27, 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 $44.37 to $45.35, 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), (5), (6) and (7) to this Form 4."}],"balance_after":48990,"source":{"system":"sec-edgar","filing":"0001140361-26-009456","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036126009456/form4.xml","form_type":"4"}},{"id":843488,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":20733,"kind":"person","name":"McKechnie Mark","position":1,"cik":"0001775007","reported_name":"McKechnie Mark","relationship":{"officer":true,"officer_title":"See Remarks"}}],"security":"Class A Common Stock","published_at":"2026-03-14T01:30:44.000Z","date":"2026-03-12","kind":"exercise","planned":true,"acquired":true,"shares":60000,"price":13.89,"value":833400.0,"ownership":{"direct":true},"balance_after":60900,"source":{"system":"sec-edgar","filing":"0001140361-26-009456","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036126009456/form4.xml","form_type":"4"}},{"id":843487,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":31958,"kind":"person","name":"Wang David H","position":1,"cik":"0001721580","reported_name":"Wang David H","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"officer_title":"See Remarks"}}],"security":"Stock Option","published_at":"2026-03-13T20:46:00.000Z","date":"2026-03-12","kind":"exercise","planned":true,"acquired":false,"shares":50000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F7","text":"The option is fully vested and exercisable."}],"balance_after":370002,"derivative":{"exercise_price":1,"expiration_date":"2026-12-27","underlying":"Class A Common Stock","underlying_shares":50000},"source":{"system":"sec-edgar","filing":"0001140361-26-009401","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":13,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036126009401/form4.xml","form_type":"4"}},{"id":843486,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":31958,"kind":"person","name":"Wang David H","position":1,"cik":"0001721580","reported_name":"Wang David H","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"officer_title":"See Remarks"}}],"security":"Stock Option","published_at":"2026-03-13T20:46:00.000Z","date":"2026-03-11","kind":"exercise","planned":true,"acquired":false,"shares":60000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F7","text":"The option is fully vested and exercisable."}],"balance_after":420002,"derivative":{"exercise_price":1,"expiration_date":"2026-12-27","underlying":"Class A Common Stock","underlying_shares":60000},"source":{"system":"sec-edgar","filing":"0001140361-26-009401","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":12,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036126009401/form4.xml","form_type":"4"}},{"id":843485,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":31958,"kind":"person","name":"Wang David H","position":1,"cik":"0001721580","reported_name":"Wang David H","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"officer_title":"See Remarks"}}],"security":"Class A Common Stock","published_at":"2026-03-13T20:46:00.000Z","date":"2026-03-12","kind":"sale","planned":true,"acquired":false,"shares":702,"price":46.57,"value":32692.14,"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 November 29, 2024."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $46.45 to $46.59, inclusive."}],"balance_after":802708,"source":{"system":"sec-edgar","filing":"0001140361-26-009401","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036126009401/form4.xml","form_type":"4"}},{"id":843484,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":31958,"kind":"person","name":"Wang David H","position":1,"cik":"0001721580","reported_name":"Wang David H","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"officer_title":"See Remarks"}}],"security":"Class A Common Stock","published_at":"2026-03-13T20:46:00.000Z","date":"2026-03-12","kind":"sale","planned":true,"acquired":false,"shares":38737,"price":45.74,"value":1771830.38,"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 November 29, 2024."},{"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 $45.40 to $46.39, inclusive."}],"balance_after":803410,"source":{"system":"sec-edgar","filing":"0001140361-26-009401","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036126009401/form4.xml","form_type":"4"}},{"id":843483,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":31958,"kind":"person","name":"Wang David H","position":1,"cik":"0001721580","reported_name":"Wang David H","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"officer_title":"See Remarks"}}],"security":"Class A Common Stock","published_at":"2026-03-13T20:46:00.000Z","date":"2026-03-12","kind":"sale","planned":true,"acquired":false,"shares":10561,"price":44.92,"value":474400.12,"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 November 29, 2024."},{"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 $44.40 to $45.39, inclusive."}],"balance_after":842147,"source":{"system":"sec-edgar","filing":"0001140361-26-009401","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036126009401/form4.xml","form_type":"4"}},{"id":843482,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":31958,"kind":"person","name":"Wang David H","position":1,"cik":"0001721580","reported_name":"Wang David H","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"officer_title":"See Remarks"}}],"security":"Class A Common Stock","published_at":"2026-03-13T20:46:00.000Z","date":"2026-03-12","kind":"exercise","planned":true,"acquired":true,"shares":50000,"price":1,"value":50000.0,"ownership":{"direct":true},"balance_after":852708,"source":{"system":"sec-edgar","filing":"0001140361-26-009401","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036126009401/form4.xml","form_type":"4"}},{"id":843481,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":31958,"kind":"person","name":"Wang David H","position":1,"cik":"0001721580","reported_name":"Wang David H","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"officer_title":"See Remarks"}}],"security":"Class A Common Stock","published_at":"2026-03-13T20:46:00.000Z","date":"2026-03-11","kind":"sale","planned":true,"acquired":false,"shares":4627,"price":48.34,"value":223669.18,"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 November 29, 2024."},{"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 $48.23 to $48.61, inclusive."}],"balance_after":802708,"source":{"system":"sec-edgar","filing":"0001140361-26-009401","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036126009401/form4.xml","form_type":"4"}},{"id":843480,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":31958,"kind":"person","name":"Wang David H","position":1,"cik":"0001721580","reported_name":"Wang David H","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"officer_title":"See Remarks"}}],"security":"Class A Common Stock","published_at":"2026-03-13T20:46:00.000Z","date":"2026-03-11","kind":"sale","planned":true,"acquired":false,"shares":55373,"price":47.89,"value":2651812.97,"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 November 29, 2024."},{"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 $47.23 to $48.22, 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), (5), and (6) to this Form 4."}],"balance_after":807335,"source":{"system":"sec-edgar","filing":"0001140361-26-009401","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036126009401/form4.xml","form_type":"4"}},{"id":843479,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":31958,"kind":"person","name":"Wang David H","position":1,"cik":"0001721580","reported_name":"Wang David H","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"officer_title":"See Remarks"}}],"security":"Class A Common Stock","published_at":"2026-03-13T20:46:00.000Z","date":"2026-03-11","kind":"exercise","planned":true,"acquired":true,"shares":60000,"price":1,"value":60000.0,"ownership":{"direct":true},"balance_after":862708,"source":{"system":"sec-edgar","filing":"0001140361-26-009401","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1680062/000114036126009401/form4.xml","form_type":"4"}},{"id":846139,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19496,"kind":"person","name":"Liu Tracy","position":1,"cik":"0001721299","reported_name":"Liu Tracy","relationship":{"director":true}}],"security":"Stock Option","published_at":"2026-03-12T20:30:25.000Z","date":"2026-03-11","kind":"exercise","planned":true,"acquired":false,"shares":15000,"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":0,"derivative":{"exercise_price":1,"expiration_date":"2026-12-27","underlying":"Class A Common Stock","underlying_shares":15000},"source":{"system":"sec-edgar","filing":"0001140361-26-009239","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1721299/000114036126009239/form4.xml","form_type":"4"}},{"id":846138,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19496,"kind":"person","name":"Liu Tracy","position":1,"cik":"0001721299","reported_name":"Liu Tracy","relationship":{"director":true}}],"security":"Stock Option","published_at":"2026-03-12T20:30:25.000Z","date":"2026-03-10","kind":"exercise","planned":true,"acquired":false,"shares":45000,"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":15000,"derivative":{"exercise_price":1,"expiration_date":"2026-12-27","underlying":"Class A Common Stock","underlying_shares":45000},"source":{"system":"sec-edgar","filing":"0001140361-26-009239","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1721299/000114036126009239/form4.xml","form_type":"4"}},{"id":846137,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19496,"kind":"person","name":"Liu Tracy","position":1,"cik":"0001721299","reported_name":"Liu Tracy","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2026-03-12T20:30:25.000Z","date":"2026-03-11","kind":"sale","planned":true,"acquired":false,"shares":3377,"price":48.25,"value":162940.25,"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 December 4, 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 $48.13 to $48.44, inclusive."}],"balance_after":110772,"source":{"system":"sec-edgar","filing":"0001140361-26-009239","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1721299/000114036126009239/form4.xml","form_type":"4"}},{"id":846136,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19496,"kind":"person","name":"Liu Tracy","position":1,"cik":"0001721299","reported_name":"Liu Tracy","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2026-03-12T20:30:25.000Z","date":"2026-03-11","kind":"sale","planned":true,"acquired":false,"shares":11623,"price":47.81,"value":555695.63,"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 December 4, 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 $47.13 to $48.12, inclusive."}],"balance_after":114149,"source":{"system":"sec-edgar","filing":"0001140361-26-009239","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1721299/000114036126009239/form4.xml","form_type":"4"}},{"id":846135,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19496,"kind":"person","name":"Liu Tracy","position":1,"cik":"0001721299","reported_name":"Liu Tracy","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2026-03-12T20:30:25.000Z","date":"2026-03-11","kind":"exercise","planned":true,"acquired":true,"shares":15000,"price":1,"value":15000.0,"ownership":{"direct":true},"balance_after":125772,"source":{"system":"sec-edgar","filing":"0001140361-26-009239","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1721299/000114036126009239/form4.xml","form_type":"4"}},{"id":846134,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19496,"kind":"person","name":"Liu Tracy","position":1,"cik":"0001721299","reported_name":"Liu Tracy","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2026-03-12T20:30:25.000Z","date":"2026-03-10","kind":"sale","planned":true,"acquired":false,"shares":12784,"price":48.19,"value":616060.96,"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 December 4, 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 $47.70 to $48.50, inclusive."}],"balance_after":110772,"source":{"system":"sec-edgar","filing":"0001140361-26-009239","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1721299/000114036126009239/form4.xml","form_type":"4"}},{"id":846133,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19496,"kind":"person","name":"Liu Tracy","position":1,"cik":"0001721299","reported_name":"Liu Tracy","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2026-03-12T20:30:25.000Z","date":"2026-03-10","kind":"sale","planned":true,"acquired":false,"shares":32216,"price":47.06,"value":1516084.96,"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 December 4, 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 $46.67 to $47.51, 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":123556,"source":{"system":"sec-edgar","filing":"0001140361-26-009239","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1721299/000114036126009239/form4.xml","form_type":"4"}},{"id":846132,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":19496,"kind":"person","name":"Liu Tracy","position":1,"cik":"0001721299","reported_name":"Liu Tracy","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2026-03-12T20:30:25.000Z","date":"2026-03-10","kind":"exercise","planned":true,"acquired":true,"shares":45000,"price":1,"value":45000.0,"ownership":{"direct":true},"balance_after":155772,"source":{"system":"sec-edgar","filing":"0001140361-26-009239","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1721299/000114036126009239/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":853439,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":12695,"kind":"person","name":"Pappis Charles C","position":1,"cik":"0001475345","reported_name":"Pappis Charles C","relationship":{"director":true}}],"security":"Stock Option","published_at":"2026-03-09T20:30:32.000Z","date":"2026-03-05","kind":"exercise","planned":true,"acquired":false,"shares":5000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"On March 5, 2026, the reporting person exercised a previously issued stock option to purchase 5,000 shares of Class A Common Stock of the Issuer."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The option is fully vested and exercisable."}],"balance_after":5000,"derivative":{"exercise_price":29.18,"expiration_date":"2035-03-14","underlying":"Class A Common Stock","underlying_shares":5000},"source":{"system":"sec-edgar","filing":"0001140361-26-008480","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1475345/000114036126008480/form4.xml","form_type":"4"}},{"id":853438,"issuer":{"id":3926,"kind":"organization","name":"ACM Research, Inc.","symbol":"ACMR"},"owners":[{"id":12695,"kind":"person","name":"Pappis Charles C","position":1,"cik":"0001475345","reported_name":"Pappis Charles C","relationship":{"director":true}}],"security":"Class A Common Stock","published_at":"2026-03-09T20:30:32.000Z","date":"2026-03-05","kind":"sale","planned":true,"acquired":false,"shares":5000,"price":50.09,"value":250450.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F2","text":"The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 20, 2025."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0001140361-26-008480","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1475345/000114036126008480/form4.xml","form_type":"4"}}],"next_cursor":"2026-03-09T20:30:32.000000Z,853438"}