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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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 pHQ3lpmBUzrNK9Vy8DOsyA==

<SEC-DOCUMENT>0001462082-09-000004.txt : 20090910
<SEC-HEADER>0001462082-09-000004.hdr.sgml : 20090910
<ACCEPTANCE-DATETIME>20090909192205
ACCESSION NUMBER:		0001462082-09-000004
CONFORMED SUBMISSION TYPE:	D/A
PUBLIC DOCUMENT COUNT:		1
ITEM INFORMATION:		Rule 506
FILED AS OF DATE:		20090910
DATE AS OF CHANGE:		20090909
EFFECTIVENESS DATE:		20090910

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			BVF/CSNK Acquisition Corp.
		CENTRAL INDEX KEY:			0001462082
		IRS NUMBER:				264465920
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		D/A
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	021-130319
		FILM NUMBER:		091061462

	BUSINESS ADDRESS:	
		STREET 1:		2121 S. EL CAMINO REAL
		STREET 2:		B-100
		CITY:			SAN MATEO
		STATE:			CA
		ZIP:			94403
		BUSINESS PHONE:		(650) 294-6634

	MAIL ADDRESS:	
		STREET 1:		2121 S. EL CAMINO REAL
		STREET 2:		B-100
		CITY:			SAN MATEO
		STATE:			CA
		ZIP:			94403
</SEC-HEADER>
<DOCUMENT>
<TYPE>D/A
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<edgarSubmission>

    <schemaVersion>X0502</schemaVersion>

    <submissionType>D/A</submissionType>

    <testOrLive>LIVE</testOrLive>

    <primaryIssuer>
        <cik>0001462082</cik>
        <entityName>BVF/CSNK Acquisition Corp.</entityName>
        <issuerAddress>
            <street1>2121 S. EL CAMINO REAL</street1>
            <street2>B-100</street2>
            <city>SAN MATEO</city>
            <stateOrCountry>CA</stateOrCountry>
            <zipCode>94403</zipCode>
        </issuerAddress>
        <issuerPhoneNumber>(650) 294-6634</issuerPhoneNumber>
        <issuerPreviousNameList>
            <value>None</value>
        </issuerPreviousNameList>
        <jurisdictionOfInc>DELAWARE</jurisdictionOfInc>
        <entityType>Corporation</entityType>
        <yearOfInc>
            <withinFiveYears>true</withinFiveYears>
            <value>2009</value>
        </yearOfInc>
    </primaryIssuer>

    <relatedPersonsList>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Edward</firstName>
                <middleName>H.</middleName>
                <lastName>Sondker</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>3247 W. 138th Terrace</street1>
                <street2></street2>
                <city>Leawood</city>
                <stateOrCountry>KS</stateOrCountry>
                <zipCode>66224</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Howard</firstName>
                <middleName></middleName>
                <lastName>Koenig</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>1910 Palomar Point Way</street1>
                <street2>#101</street2>
                <city>Carlsbad</city>
                <stateOrCountry>CA</stateOrCountry>
                <zipCode>92008</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Vince</firstName>
                <middleName></middleName>
                <lastName>Narez</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>465 Via Dichosa</street1>
                <street2></street2>
                <city>Santa Barbara</city>
                <stateOrCountry>CA</stateOrCountry>
                <zipCode>93110</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Glen</firstName>
                <middleName>E.</middleName>
                <lastName>Shu</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>2121 S. El Camino Real</street1>
                <street2>B-100</street2>
                <city>San Mateo</city>
                <stateOrCountry>CA</stateOrCountry>
                <zipCode>94403</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
        <relatedPersonInfo>
            <relatedPersonName>
                <firstName>Matt</firstName>
                <middleName></middleName>
                <lastName>Carpenter</lastName>
            </relatedPersonName>
            <relatedPersonAddress>
                <street1>7244 S. Perth Way</street1>
                <street2></street2>
                <city>Aurora</city>
                <stateOrCountry>CO</stateOrCountry>
                <zipCode>80016</zipCode>
            </relatedPersonAddress>
            <relatedPersonRelationshipList>
                <relationship>Executive Officer</relationship>
                <relationship>Director</relationship>
            </relatedPersonRelationshipList>
            <relationshipClarification></relationshipClarification>
        </relatedPersonInfo>
    </relatedPersonsList>

    <offeringData>
        <industryGroup>
            <industryGroupType>Other</industryGroupType>
        </industryGroup>
        <issuerSize>
            <revenueRange>$5,000,001 - $25,000,000</revenueRange>
        </issuerSize>
        <federalExemptionsExclusions>
            <item>06</item>
        </federalExemptionsExclusions>
        <typeOfFiling>
            <newOrAmendment>
                <isAmendment>true</isAmendment>
                <previousAccessionNumber>0001462082-09-000003</previousAccessionNumber>
            </newOrAmendment>
            <dateOfFirstSale>
                <value>2009-04-03</value>
            </dateOfFirstSale>
        </typeOfFiling>
        <durationOfOffering>
            <moreThanOneYear>false</moreThanOneYear>
        </durationOfOffering>
        <typesOfSecuritiesOffered>
            <isEquityType>true</isEquityType>
            <isDebtType>true</isDebtType>
        </typesOfSecuritiesOffered>
        <businessCombinationTransaction>
            <isBusinessCombinationTransaction>true</isBusinessCombinationTransaction>
            <clarificationOfResponse></clarificationOfResponse>
        </businessCombinationTransaction>
        <minimumInvestmentAccepted>0</minimumInvestmentAccepted>
        <salesCompensationList></salesCompensationList>
        <offeringSalesAmounts>
            <totalOfferingAmount>6257500</totalOfferingAmount>
            <totalAmountSold>6257500</totalAmountSold>
            <totalRemaining>0</totalRemaining>
            <clarificationOfResponse></clarificationOfResponse>
        </offeringSalesAmounts>
        <investors>
            <hasNonAccreditedInvestors>false</hasNonAccreditedInvestors>
            <totalNumberAlreadyInvested>22</totalNumberAlreadyInvested>
        </investors>
        <salesCommissionsFindersFees>
            <salesCommissions>
                <dollarAmount>0</dollarAmount>
            </salesCommissions>
            <findersFees>
                <dollarAmount>0</dollarAmount>
            </findersFees>
            <clarificationOfResponse></clarificationOfResponse>
        </salesCommissionsFindersFees>
        <useOfProceeds>
            <grossProceedsUsed>
                <dollarAmount>0</dollarAmount>
            </grossProceedsUsed>
            <clarificationOfResponse></clarificationOfResponse>
        </useOfProceeds>
        <signatureBlock>
            <authorizedRepresentative>false</authorizedRepresentative>
            <signature>
                <issuerName>BVF/CSNK Acquisition Corp.</issuerName>
                <signatureName>Glen E. Shu</signatureName>
                <nameOfSigner>Glen E. Shu</nameOfSigner>
                <signatureTitle>President</signatureTitle>
                <signatureDate>2009-09-09</signatureDate>
            </signature>
        </signatureBlock>
    </offeringData>
</edgarSubmission>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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