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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 K3PNC/hxNI7h6RfshSu8KhRt8st34Thd5n0mNkOQrxIIFG803YKjXC9ZtKsChKz2
 btToek5G/tfw0EtjI+Ny0A==

<SEC-DOCUMENT>9999999997-11-000767.txt : 20110207
<SEC-HEADER>9999999997-11-000767.hdr.sgml : 20110207
<ACCEPTANCE-DATETIME>20110207110812
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ACCESSION NUMBER:		9999999997-11-000767
CONFORMED SUBMISSION TYPE:	ARS
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20100930
FILED AS OF DATE:		20110127
DATE AS OF CHANGE:		20110207
EFFECTIVENESS DATE:		20110127

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CABOT MICROELECTRONICS CORP
		CENTRAL INDEX KEY:			0001102934
		STANDARD INDUSTRIAL CLASSIFICATION:	SEMICONDUCTORS & RELATED DEVICES [3674]
		IRS NUMBER:				364324765
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0930

	FILING VALUES:
		FORM TYPE:		ARS
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-30205
		FILM NUMBER:		11005223

	BUSINESS ADDRESS:	
		STREET 1:		870 NORTH COMMONS DRIVE
		CITY:			AURORA
		STATE:			IL
		ZIP:			60504
		BUSINESS PHONE:		6303755461

	MAIL ADDRESS:	
		STREET 1:		870 N COMMONS DR
		CITY:			AURORA
		STATE:			IL
		ZIP:			60504
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<FILENAME>9999999997-11-000767.paper
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This document was generated as part of a paper submission.
Please reference the Document Control Number 11005223 for access to the original document.
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