0000950103-21-008337.txt : 20210602 0000950103-21-008337.hdr.sgml : 20210602 20210602182022 ACCESSION NUMBER: 0000950103-21-008337 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20210531 FILED AS OF DATE: 20210602 DATE AS OF CHANGE: 20210602 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Siu Chris CENTRAL INDEX KEY: 0001389044 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 000-50646 FILM NUMBER: 21990606 MAIL ADDRESS: STREET 1: 3408 GARRETT DRIVE CITY: SANTA CLARA STATE: CA ZIP: 95054-2803 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: Ultra Clean Holdings, Inc. CENTRAL INDEX KEY: 0001275014 STANDARD INDUSTRIAL CLASSIFICATION: SEMICONDUCTORS & RELATED DEVICES [3674] IRS NUMBER: 611430858 STATE OF INCORPORATION: DE FISCAL YEAR END: 1225 BUSINESS ADDRESS: STREET 1: 26462 CORPORATE AVENUE CITY: HAYWARD STATE: CA ZIP: 94545 BUSINESS PHONE: (510) 576-4400 MAIL ADDRESS: STREET 1: 26462 CORPORATE AVENUE CITY: HAYWARD STATE: CA ZIP: 94545 FORMER COMPANY: FORMER CONFORMED NAME: ULTRA CLEAN HOLDINGS INC DATE OF NAME CHANGE: 20031231 4 1 dp152157_4-siu.xml FORM 4 X0306 4 2021-05-31 0 0001275014 Ultra Clean Holdings, Inc. UCTT 0001389044 Siu Chris ULTRA CLEAN HOLDINGS, INC. 26462 CORPORATE AVE HAYWARD CA 94545 0 1 0 0 Chief Accounting Officer & SVP Common Stock 2021-05-31 4 F 0 4480 56.33 D 41884 D Represents shares automatically withheld for payment of tax liability arising as a result of the partial settlement of restricted stock unit awards that vested. /s/ Paul Y. Cho, as attorney-in-fact for Chris Siu 2021-06-02