<SEC-DOCUMENT>0001102934-18-000012-index.html : 20180426
<SEC-HEADER>0001102934-18-000012.hdr.sgml : 20180426
<ACCEPTANCE-DATETIME>20180426060329
ACCESSION NUMBER:		0001102934-18-000012
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		13
CONFORMED PERIOD OF REPORT:	20180426
ITEM INFORMATION:		Results of Operations and Financial Condition
ITEM INFORMATION:		Financial Statements and Exhibits
FILED AS OF DATE:		20180426
DATE AS OF CHANGE:		20180426

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:		8-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-30205
		FILM NUMBER:		18775939

	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
</SEC-HEADER>
<DOCUMENT>
<TYPE>8-K
<SEQUENCE>1
<FILENAME>cmc8kfiled042618.htm
<DESCRIPTION>CMC 8-K FILED 04-26-18
<TEXT>
Document 1 - file: cmc8kfiled042618.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>2
<FILENAME>exhibit99_1.htm
<DESCRIPTION>EXHIBIT 99.1
<TEXT>
Document 2 - file: exhibit99_1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.2
<SEQUENCE>3
<FILENAME>exhibit99_2.htm
<DESCRIPTION>EXHIBIT 99.2
<TEXT>
Document 3 - file: exhibit99_2.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>exhibit99_2slide7.jpg
<TEXT>
Document 4 - file: exhibit99_2slide7.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>exhibit99_2slide10.jpg
<TEXT>
Document 5 - file: exhibit99_2slide10.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>6
<FILENAME>exhibit99_2slide11.jpg
<TEXT>
Document 6 - file: exhibit99_2slide11.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>7
<FILENAME>exhibit99_2slide16.jpg
<TEXT>
Document 7 - file: exhibit99_2slide16.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>8
<FILENAME>exhibit99_2slide17.jpg
<TEXT>
Document 8 - file: exhibit99_2slide17.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>9
<FILENAME>exhibit99_2slide20.jpg
<TEXT>
Document 9 - file: exhibit99_2slide20.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>10
<FILENAME>exhibit99_2slide21.jpg
<TEXT>
Document 10 - file: exhibit99_2slide21.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>11
<FILENAME>exhibit99_2slide22.jpg
<TEXT>
Document 11 - file: exhibit99_2slide22.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>12
<FILENAME>exhibit99_2slide24.jpg
<TEXT>
Document 12 - file: exhibit99_2slide24.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>13
<FILENAME>exhibit99_2slide25.jpg
<TEXT>
Document 13 - file: exhibit99_2slide25.jpg

</DOCUMENT>
</SEC-DOCUMENT>