<SEC-DOCUMENT>0000950103-19-017749-index.html : 20191226
<SEC-HEADER>0000950103-19-017749.hdr.sgml : 20191226
<ACCEPTANCE-DATETIME>20191226160903
ACCESSION NUMBER:		0000950103-19-017749
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20191217
FILED AS OF DATE:		20191226
DATE AS OF CHANGE:		20191226

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Seto Jacqueline A.
		CENTRAL INDEX KEY:			0001797717

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-50646
		FILM NUMBER:		191310666

	MAIL ADDRESS:	
		STREET 1:		C/O 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]
		IRS NUMBER:				611430858
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1227

	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>3
<SEQUENCE>1
<FILENAME>dp117937_3-seto.xml
<DESCRIPTION>FORM 3
<TEXT>
Document 1 - file: dp117937_3-seto.html

Document 1 - RAW XML: dp117937_3-seto.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>2
<FILENAME>dp117937_ex24.htm
<DESCRIPTION>EXHIBIT 24
<TEXT>
Document 2 - file: dp117937_ex24.htm

</DOCUMENT>
</SEC-DOCUMENT>