0001140361-23-059932.txt : 20231228 0001140361-23-059932.hdr.sgml : 20231228 20231228210213 ACCESSION NUMBER: 0001140361-23-059932 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20231226 FILED AS OF DATE: 20231228 DATE AS OF CHANGE: 20231228 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Liu Tracy CENTRAL INDEX KEY: 0001721299 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-38273 FILM NUMBER: 231524129 MAIL ADDRESS: STREET 1: C/O ACM RESEARCH, INC. STREET 2: 42307 OSGOOD ROAD, SUITE I CITY: FREMONT STATE: CA ZIP: 94539 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: ACM Research, Inc. CENTRAL INDEX KEY: 0001680062 STANDARD INDUSTRIAL CLASSIFICATION: SPECIAL INDUSTRY MACHINERY, NEC [3559] ORGANIZATION NAME: 06 Technology IRS NUMBER: 000000000 STATE OF INCORPORATION: CA FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 42307 OSGOOD ROAD, SUITE I CITY: FREMONT STATE: CA ZIP: 94539 BUSINESS PHONE: 510-445-3700 MAIL ADDRESS: STREET 1: 42307 OSGOOD ROAD, SUITE I CITY: FREMONT STATE: CA ZIP: 94539 4 1 form4.xml FORM 4 X0508 4 2023-12-26 0001680062 ACM Research, Inc. ACMR 0001721299 Liu Tracy C/O ACM RESEARCH, INC. 42307 OSGOOD ROAD, SUITE I FREMONT CA 94539 true true Class A Common Stock 2023-12-26 4 M 0 10000 5.6 A 120772 D Class A Common Stock 2023-12-26 4 S 0 10000 20 D 110772 D Stock Option 5.6 2023-12-26 4 M 0 10000 0 D 2029-04-22 Class A Common Stock 10000 32000 D On December 26, 2023, the reporting person exercised a previously issued stock option to purchase 10,000 shares of Class A Common Stock of the Issuer. The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 21, 2023. The option is fully vested and exercisable. /s/ Mark McKechnie, Attorney-in-Fact for Tracy Liu 2023-12-28