<SEC-DOCUMENT>0001406666-12-000019.txt : 20120910
<SEC-HEADER>0001406666-12-000019.hdr.sgml : 20120910
<ACCEPTANCE-DATETIME>20120910180541
ACCESSION NUMBER:		0001406666-12-000019
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20120910
FILED AS OF DATE:		20120910
DATE AS OF CHANGE:		20120910

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Ashby Michael
		CENTRAL INDEX KEY:			0001484925

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34674
		FILM NUMBER:		121083993

	MAIL ADDRESS:	
		STREET 1:		C/O CALIX NETWORKS, INC.
		STREET 2:		1035 N. MCDOWELL BLVD.
		CITY:			PETALUMA
		STATE:			CA
		ZIP:			94954

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CALIX, INC
		CENTRAL INDEX KEY:			0001406666
		STANDARD INDUSTRIAL CLASSIFICATION:	COMMUNICATION SERVICES, NEC [4899]
		IRS NUMBER:				680438710
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		1035 N MCDOWELL BLVD
		CITY:			PETALUMA
		STATE:			CA
		ZIP:			95954
		BUSINESS PHONE:		707-766-3000

	MAIL ADDRESS:	
		STREET 1:		1035 N MCDOWELL BLVD
		CITY:			PETALUMA
		STATE:			CA
		ZIP:			95954

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	CALIX NETWORKS INC
		DATE OF NAME CHANGE:	20070713
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2012-09-10</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001406666</issuerCik>
        <issuerName>CALIX, INC</issuerName>
        <issuerTradingSymbol>CALX</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001484925</rptOwnerCik>
            <rptOwnerName>Ashby Michael</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O CALIX, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>1035 N. MCDOWELL BLVD.</rptOwnerStreet2>
            <rptOwnerCity>PETALUMA</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94954</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Executive VP and CFO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2012-09-10</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>50000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>5.57</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1489794</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <ownerSignature>
        <signatureName>Michael Ashby</signatureName>
        <signatureDate>2012-09-10</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
