<SEC-DOCUMENT>0000950103-21-006732-index.html : 20210504
<SEC-HEADER>0000950103-21-006732.hdr.sgml : 20210504
<ACCEPTANCE-DATETIME>20210504192958
ACCESSION NUMBER:		0000950103-21-006732
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20210430
FILED AS OF DATE:		20210504
DATE AS OF CHANGE:		20210504

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:		21890553

	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
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>dp150485_4-siu.xml
<DESCRIPTION>FORM 4
<TEXT>
Document 1 - file: dp150485_4-siu.html

Document 1 - RAW XML: dp150485_4-siu.xml

</DOCUMENT>
</SEC-DOCUMENT>