    <SEC-DOCUMENT>0001104659-18-001090-index.html : 20180108
    <SEC-HEADER>0001104659-18-001090.hdr.sgml : 20180108
    <ACCEPTANCE-DATETIME>20180108060740
    ACCESSION NUMBER:		0001104659-18-001090
    CONFORMED SUBMISSION TYPE:	8-K
    PUBLIC DOCUMENT COUNT:		36
    CONFORMED PERIOD OF REPORT:	20180108
    ITEM INFORMATION:		Regulation FD Disclosure
    ITEM INFORMATION:		Financial Statements and Exhibits
    FILED AS OF DATE:		20180108
    DATE AS OF CHANGE:		20180108

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			Protagonist Therapeutics, Inc
    		CENTRAL INDEX KEY:			0001377121
    		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
    		IRS NUMBER:				980505495
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		8-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-37852
    		FILM NUMBER:		18514741

    	BUSINESS ADDRESS:
    		STREET 1:		7707 GATEWAY BLVD., SUITE 140
    		CITY:			NEWARK
    		STATE:			CA
    		ZIP:			94560-1160
    		BUSINESS PHONE:		(510) 474-0170

    	MAIL ADDRESS:
    		STREET 1:		7707 GATEWAY BLVD., SUITE 140
    		CITY:			NEWARK
    		STATE:			CA
    		ZIP:			94560-1160

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	Protagonist Therapeutics Inc
    		DATE OF NAME CHANGE:	20130605

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	Protagonist Inc
    		DATE OF NAME CHANGE:	20061002
    </SEC-HEADER>
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    <TYPE>8-K
    <SEQUENCE>1
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    <DESCRIPTION>8-K
    <TEXT>
    Document 1 - file: a18-2405_18k.htm

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    <SEQUENCE>2
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    <DESCRIPTION>EX-99.1
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    Document 2 - file: a18-2405_1ex99d1.htm

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    <FILENAME>g24051mmi001.gif
    <DESCRIPTION>GRAPHIC
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    <SEQUENCE>6
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    <SEQUENCE>10
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    <SEQUENCE>11
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    <SEQUENCE>13
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    <SEQUENCE>19
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    <SEQUENCE>20
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    <SEQUENCE>24
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    <SEQUENCE>25
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    <SEQUENCE>26
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    <SEQUENCE>27
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    <SEQUENCE>28
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    <SEQUENCE>29
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    <SEQUENCE>30
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    <SEQUENCE>31
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    <SEQUENCE>32
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    <SEQUENCE>33
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    <SEQUENCE>34
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    <SEQUENCE>35
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    <SEQUENCE>36
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