<SEC-DOCUMENT>0000950103-18-012687-index.html : 20181030
<SEC-HEADER>0000950103-18-012687.hdr.sgml : 20181030
<ACCEPTANCE-DATETIME>20181030165608
ACCESSION NUMBER:		0000950103-18-012687
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20181027
FILED AS OF DATE:		20181030
DATE AS OF CHANGE:		20181030

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			D'Ercole Ronald
		CENTRAL INDEX KEY:			0001698622

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-50646
		FILM NUMBER:		181147588

	MAIL ADDRESS:	
		STREET 1:		ULTRA CLEAN HOLDINGS, INC.
		STREET 2:		26462 CORORATE AVE
		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:			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
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>dp97552_4-dercole.xml
<DESCRIPTION>FORM 4
<TEXT>
Document 1 - file: dp97552_4-dercole.html

Document 1 - RAW XML: dp97552_4-dercole.xml

</DOCUMENT>
</SEC-DOCUMENT>