<SEC-DOCUMENT>0001406666-18-000041.txt : 20180516
<SEC-HEADER>0001406666-18-000041.hdr.sgml : 20180516
<ACCEPTANCE-DATETIME>20180516170251
ACCESSION NUMBER:		0001406666-18-000041
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20180514
FILED AS OF DATE:		20180516
DATE AS OF CHANGE:		20180516

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Weening Michael
		CENTRAL INDEX KEY:			0001678385

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34674
		FILM NUMBER:		18840705

	MAIL ADDRESS:	
		STREET 1:		1035 N. MCDOWELL BLVD
		CITY:			PETALUMA
		STATE:			CA
		ZIP:			94954-1173

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>wf-form4_152650455708980.xml
<DESCRIPTION>FORM 4
<TEXT>
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<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2018-05-14</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

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

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001678385</rptOwnerCik>
            <rptOwnerName>Weening 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>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>EVP, Sales and Marketing</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2018-05-14</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>2000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>5.185</value>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>4414</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">The reporting person is voluntarily reporting the acquisition of shares of the issuer's common stock pursuant to the Calix, Inc. Amended and Restated Employee Stock Purchase Plan (&quot;ESPP&quot;) for the ESPP purchase period of November 15, 2017 through May 14, 2018. This transaction is exempt under Rule 16b-3(c).</footnote>
        <footnote id="F2">In accordance with the ESPP, these shares were purchased at 85% of the closing price of the issuer's common stock on November 15, 2017, the first trading day of the purchase period.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Suzanne Tom as Attorney in Fact for Michael Weening</signatureName>
        <signatureDate>2018-05-16</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>2
<FILENAME>ex-24.htm
<DESCRIPTION>M WEENING POA_2016
<TEXT>
<!-- Document created using Workiva -->
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<pre>
POWER OF ATTORNEY
I appoint each of William Atkins, Suzanne Tom, Sheila Cheung, Neth Casapao and Rhonda McPherson, signing singly, with full power of substitution, as my attorney-in-fact to:
(1) prepare, execute in my name and on my behalf, and submit to the U.S. Securities and Exchange Commission ("SEC") a Form ID, including amendments, and any other documents necessary or appropriate to obtain codes and passwords enabling me to make electronic filings with the SEC of reports required by Section 16(a) of the Securities Exchange Act of 1934 or any rule or regulation of the SEC;
(2) execute for and on behalf of me, in my capacity as an officer of Calix, Inc. ("Calix"), Forms 3, 4, and 5 and any amendments in accordance with Section 16(a) of the Securities Exchange Act of 1934 and its rules;
(3) do and perform any acts for and on behalf of me which may be necessary or desirable to complete and execute any such Form 3, 4, or 5, or amendments, and timely file such form with the SEC and any stock exchange or similar authority; and
(4) take any other action of any type whatsoever in connection with the above which, in the opinion of such attorney-in-fact, may be of benefit to, in the best interest of, or legally required by, me, it being understood that the documents executed by such attorney-in-fact on behalf of me under this Power of Attorney shall be in such form and shall contain such terms and conditions as such attorney-in-fact may approve in such attorney-in-fact's discretion.
I grant to each such attorney-in-fact full power and authority to perform any act necessary or proper to be done in the exercise of any of the rights and powers granted, as fully as I might do if personally present, with full power of substitution or revocation, ratifying and confirming all that such attorney-in-fact, or such attorney-in-fact's substitute, shall lawfully do or cause to be done by virtue of this power of attorney and the rights and powers granted. I acknowledge that the above attorneys-in-fact, in serving in such capacity at my request, are not assuming, nor is Calix assuming, any of my responsibilities to comply with Section 16 of the Securities Exchange Act of 1934.
This Power of Attorney shall remain in effect until I am no longer required to file Forms 3, 4, and 5 with respect to my holdings of and transactions in securities issued by Calix, unless earlier revoked by me in a signed writing delivered to the above attorneys-in-fact.

Signature:
/s/ Michael Weening

Date:June 27, 2016
</pre>
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