    <SEC-DOCUMENT>0001564590-17-024772-index.html : 20171211
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    <ACCEPTANCE-DATETIME>20171211083017
    ACCESSION NUMBER:		0001564590-17-024772
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		20
    CONFORMED PERIOD OF REPORT:	20171209
    ITEM INFORMATION:		Regulation FD Disclosure
    ITEM INFORMATION:		Other Events
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20171211
    DATE AS OF CHANGE:		20171211

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			CATALYST BIOSCIENCES, INC.
    		CENTRAL INDEX KEY:			0001124105
    		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
    		IRS NUMBER:				562020050
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	000-51173
    		FILM NUMBER:		171248498

    	BUSINESS ADDRESS:
    		STREET 1:		260 LITTLEFIELD AVENUE
    		CITY:			SOUTH SAN FRANCISCO
    		STATE:			CA
    		ZIP:			94080
    		BUSINESS PHONE:		6507450655

    	MAIL ADDRESS:
    		STREET 1:		260 LITTLEFIELD AVENUE
    		CITY:			SOUTH SAN FRANCISCO
    		STATE:			CA
    		ZIP:			94080

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	TARGACEPT INC
    		DATE OF NAME CHANGE:	20000919
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    <FILENAME>cbio-8k_20171231.htm
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    Document 1 - file: cbio-8k_20171231.htm

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    Document 2 - file: cbio-ex991_92.htm

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    <DESCRIPTION>EX-99.2
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    Document 3 - file: cbio-ex992_7.htm

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    Document 4 - file: g20171211081645369782.jpg

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    Document 12 - file: g20171211081645212773.jpg

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    Document 13 - file: g20171211081645233774.jpg

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    Document 16 - file: g20171211081645300778.jpg

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