<SEC-DOCUMENT>0001193125-19-160781-index.html : 20190530
<SEC-HEADER>0001193125-19-160781.hdr.sgml : 20190530
<ACCEPTANCE-DATETIME>20190530121103
ACCESSION NUMBER:		0001193125-19-160781
CONFORMED SUBMISSION TYPE:	SD
PUBLIC DOCUMENT COUNT:		2
<RULE>
<RULE-NAME>13p-1
<ITEM>
<ITEM-NUMBER>1.01
<ITEM-PERIOD>20181231
</ITEM>
<ITEM>
<ITEM-NUMBER>1.02
<ITEM-PERIOD>20181231
</ITEM>
</RULE>
FILED AS OF DATE:		20190530
DATE AS OF CHANGE:		20190530

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CABOT CORP
		CENTRAL INDEX KEY:			0000016040
		STANDARD INDUSTRIAL CLASSIFICATION:	MISCELLANEOUS CHEMICAL PRODUCTS [2890]
		IRS NUMBER:				042271897
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0930

	FILING VALUES:
		FORM TYPE:		SD
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-05667
		FILM NUMBER:		19865446

	BUSINESS ADDRESS:	
		STREET 1:		TWO SEAPORT LANE SUITE 1300
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02210
		BUSINESS PHONE:		6173450100

	MAIL ADDRESS:	
		STREET 1:		TWO SEAPORT LANE SUITE 1300
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02210

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	CABOT GODFREY L INC
		DATE OF NAME CHANGE:	19680418
</SEC-HEADER>
<DOCUMENT>
<TYPE>SD
<SEQUENCE>1
<FILENAME>d749227dsd.htm
<DESCRIPTION>SD
<TEXT>
Document 1 - file: d749227dsd.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-1.01
<SEQUENCE>2
<FILENAME>d749227dex101.htm
<DESCRIPTION>EX-1.01
<TEXT>
Document 2 - file: d749227dex101.htm

</DOCUMENT>
</SEC-DOCUMENT>