0001140361-21-008752.txt : 20210316 0001140361-21-008752.hdr.sgml : 20210316 20210316173015 ACCESSION NUMBER: 0001140361-21-008752 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20210312 FILED AS OF DATE: 20210316 DATE AS OF CHANGE: 20210316 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Wang David H CENTRAL INDEX KEY: 0001721580 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-38273 FILM NUMBER: 21747207 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 FORM 4 X0306 4 2021-03-12 0001680062 ACM Research, Inc. ACMR 0001721580 Wang David H C/O ACM RESEARCH, INC. 42307 OSGOOD ROAD, SUITE I FREMONT CA 94539 true true true See remarks Class A Common Stock 2021-03-12 4 M 0 100001 0.75 A 268007 D Class A Common Stock 2021-03-12 4 F 0 773 97.05 D 267234 D Class A Common Stock 33334 I By Jing Chen, wife of David H. Wang Class A Common Stock 15279 I By Sophia Wang, daughter of David H. Wang Class A Common Stock 60000 I By David Hui Wang and Jing Chen Family Irrevocable Trust for Wang Children Class A Common Stock 206667 I By Wang-Chen Family Living Trust Stock Option 0.75 2021-03-12 4 M 0 100001 0 D 2021-05-01 Class A Common Stock 100001 0 D On March 12, 2021, the reporting person exercised, by net exercise, a previously issued stock option to purchase 100,001 shares of Class A Common Stock of the Issuer. The reporting person paid the exercise price on a cashless basis, resulting in the Issuer withholding 773 shares of Class A Common Stock for payment of the exercise price, based on the closing price of the Issuer's Class A Common Stock on March 11, 2021 of $97.05, and issuing to the reporting person the remaining 99,228 shares of Class A Common Stock. The option is fully vested and exercisable. Chief Executive Officer, President and Director /s/ Mark L. Johnson, Attorney-in-Fact for David H. Wang 2021-03-16