0000950103-25-005713.txt : 20250502 0000950103-25-005713.hdr.sgml : 20250502 20250502210128 ACCESSION NUMBER: 0000950103-25-005713 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20250430 FILED AS OF DATE: 20250502 DATE AS OF CHANGE: 20250502 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Cook Christopher S CENTRAL INDEX KEY: 0001927266 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 000-50646 FILM NUMBER: 25910651 MAIL ADDRESS: STREET 1: ULTRA CLEAN HOLDINGS, INC. STREET 2: 26462 CORPORATE AVENUE CITY: HAYWARD STATE: CA ZIP: 94545 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: Ultra Clean Holdings, Inc. CENTRAL INDEX KEY: 0001275014 STANDARD INDUSTRIAL CLASSIFICATION: SEMICONDUCTORS & RELATED DEVICES [3674] ORGANIZATION NAME: 04 Manufacturing EIN: 611430858 STATE OF INCORPORATION: DE FISCAL YEAR END: 1230 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 dp228529_4-cook.xml FORM 4 X0508 4 2025-04-30 0 0001275014 Ultra Clean Holdings, Inc. UCTT 0001927266 Cook Christopher S ULTRA CLEAN HOLDINGS, INC. 26462 CORPORATE AVE HAYWARD CA 94545 0 1 0 0 President, Products Division 0 Common Stock 2025-04-30 4 F 0 1855 18.71 D 61104 D Common Stock 2025-04-30 4 F 0 2225 18.71 D 58879 D Common Stock 2025-04-30 4 F 0 2550 18.71 D 56329 D Common Stock 4100 I by Trust 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 Christopher S. Cook 2025-05-02