<SEC-DOCUMENT>0001193125-17-383690-index.html : 20171229
<SEC-HEADER>0001193125-17-383690.hdr.sgml : 20171229
<ACCEPTANCE-DATETIME>20171229170435
ACCESSION NUMBER:		0001193125-17-383690
CONFORMED SUBMISSION TYPE:	S-3
PUBLIC DOCUMENT COUNT:		9
FILED AS OF DATE:		20171229
DATE AS OF CHANGE:		20171229

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CymaBay Therapeutics, Inc.
		CENTRAL INDEX KEY:			0001042074
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				943103561
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		S-3
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-222372
		FILM NUMBER:		171282577

	BUSINESS ADDRESS:	
		STREET 1:		7999 GATEWAY BLVD
		STREET 2:		SUITE 130
		CITY:			NEWARK
		STATE:			CA
		ZIP:			94560
		BUSINESS PHONE:		510-293-8800

	MAIL ADDRESS:	
		STREET 1:		7999 GATEWAY BLVD
		STREET 2:		SUITE 130
		CITY:			NEWARK
		STATE:			CA
		ZIP:			94560

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	METABOLEX, INC.
		DATE OF NAME CHANGE:	20090721

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	METABOLEX INC
		DATE OF NAME CHANGE:	19970710
</SEC-HEADER>
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<TYPE>S-3
<SEQUENCE>1
<FILENAME>d497481ds3.htm
<DESCRIPTION>FORM S-3
<TEXT>
Document 1 - file: d497481ds3.htm

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<DOCUMENT>
<TYPE>EX-4.6
<SEQUENCE>2
<FILENAME>d497481dex46.htm
<DESCRIPTION>EX-4.6
<TEXT>
Document 2 - file: d497481dex46.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-4.8
<SEQUENCE>3
<FILENAME>d497481dex48.htm
<DESCRIPTION>EX-4.8
<TEXT>
Document 3 - file: d497481dex48.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-4.9
<SEQUENCE>4
<FILENAME>d497481dex49.htm
<DESCRIPTION>EX-4.9
<TEXT>
Document 4 - file: d497481dex49.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-4.10
<SEQUENCE>5
<FILENAME>d497481dex410.htm
<DESCRIPTION>EX-4.10
<TEXT>
Document 5 - file: d497481dex410.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-5.1
<SEQUENCE>6
<FILENAME>d497481dex51.htm
<DESCRIPTION>EX-5.1
<TEXT>
Document 6 - file: d497481dex51.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.1
<SEQUENCE>7
<FILENAME>d497481dex231.htm
<DESCRIPTION>EX-23.1
<TEXT>
Document 7 - file: d497481dex231.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>8
<FILENAME>g497481g1222082753905.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 8 - file: g497481g1222082753905.jpg

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>9
<FILENAME>g497481g73a92.jpg
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<TEXT>
Document 9 - file: g497481g73a92.jpg

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