-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 U9QqfmCKFFYnxtsABopo8AooEONygKD771J9b/9Y9oyfrRjURnlGV7SC5XauXfmZ
 esvfX+Y/KiZMe9Twsl3dzg==

<SEC-DOCUMENT>0001320271-09-000003.txt : 20090901
<SEC-HEADER>0001320271-09-000003.hdr.sgml : 20090901
<ACCEPTANCE-DATETIME>20090901190700
ACCESSION NUMBER:		0001320271-09-000003
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20090828
FILED AS OF DATE:		20090901
DATE AS OF CHANGE:		20090901

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			SIDRANSKY DAVID
		CENTRAL INDEX KEY:			0001277161

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-17263
		FILM NUMBER:		091049527

	MAIL ADDRESS:	
		STREET 1:		JOHNS HOPKINS UNIVERSITY
		STREET 2:		720 RUTLAND AVENUE
		CITY:			BALTIMORE
		STATE:			MD
		ZIP:			21205

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CHAMPIONS BIOTECHNOLOGY, INC.
		CENTRAL INDEX KEY:			0000771856
		STANDARD INDUSTRIAL CLASSIFICATION:	BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836]
		IRS NUMBER:				521401755
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0430

	BUSINESS ADDRESS:	
		STREET 1:		2200 WILSON BLVD
		STREET 2:		SUITE 102-316
		CITY:			ARLINGTON
		STATE:			VA
		ZIP:			22201
		BUSINESS PHONE:		703-526-0400

	MAIL ADDRESS:	
		STREET 1:		2200 WILSON BLVD.
		STREET 2:		SUITE 102-316
		CITY:			ARLINGTON
		STATE:			VA
		ZIP:			22201

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	CHAMPIONS SPORTS INC
		DATE OF NAME CHANGE:	19920703

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	INTERNATIONAL GROUP INC
		DATE OF NAME CHANGE:	19860319
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2009-08-28</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000771856</issuerCik>
        <issuerName>CHAMPIONS BIOTECHNOLOGY, INC.</issuerName>
        <issuerTradingSymbol>csbr</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001277161</rptOwnerCik>
            <rptOwnerName>SIDRANSKY DAVID</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>JOHNS HOPKINS UNIVERSITY</rptOwnerStreet1>
            <rptOwnerStreet2>720 RUTLAND AVENUE</rptOwnerStreet2>
            <rptOwnerCity>BALTIMORE</rptOwnerCity>
            <rptOwnerState>MD</rptOwnerState>
            <rptOwnerZipCode>21205</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chairman of the Board</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Right to Purchase</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>0.77</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2009-08-28</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>80000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2010-08-28</value>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <value>2019-08-27</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>80000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>80000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">exercisable in three equal annual installments on 08/28/2010, 2011 and 2012.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ David Sidransky</signatureName>
        <signatureDate>2009-09-01</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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