0001140361-23-026456.txt : 20230524 0001140361-23-026456.hdr.sgml : 20230524 20230524183309 ACCESSION NUMBER: 0001140361-23-026456 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20230522 FILED AS OF DATE: 20230524 DATE AS OF CHANGE: 20230524 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Dun Haiping CENTRAL INDEX KEY: 0001721581 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-38273 FILM NUMBER: 23955445 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] 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 X0407 4 2023-05-22 0001680062 ACM Research, Inc. ACMR 0001721581 Dun Haiping C/O ACM RESEARCH, INC. 42307 OSGOOD ROAD, SUITE I FREMONT CA 94539 true false Class A Common Stock 2023-05-22 4 M 0 37500 0.5 A 926616 D Class A Common Stock 2023-05-22 4 F 0 1928 9.73 D 924688 D Stock Option 0.5 2023-05-22 4 M 0 37500 0 D 2025-04-30 Class A Common Stock 37500 200001 D On May 22, 2023, the reporting person exercised, by net exercise, a previously issued stock option to purchase 37,500 shares of Class A Common Stock of the Issuer. The reporting person paid the exercise price on a cashless basis, resulting in the Issuer withholding 1,928 shares of Class A Common Stock for payment of the exercise price, based on the closing price of the Issuer's Class A Common Stock on May 19, 2023 of $9.73, and issuing to the reporting person the remaining 35,572 shares of Class A Common Stock. The option is fully vested and exercisable. /s/ Mark McKechnie, Attorney-in-Fact for Haiping Dun 2023-05-24