<SEC-DOCUMENT>0001415889-21-005011.txt : 20211028
<SEC-HEADER>0001415889-21-005011.hdr.sgml : 20211028
<ACCEPTANCE-DATETIME>20211028200346
ACCESSION NUMBER:		0001415889-21-005011
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20211026
FILED AS OF DATE:		20211028
DATE AS OF CHANGE:		20211028

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Bazemore Todd
		CENTRAL INDEX KEY:			0001605767

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-38150
		FILM NUMBER:		211360079

	MAIL ADDRESS:	
		STREET 1:		C/O DYAX CORP.
		STREET 2:		55 NETWORK DRIVE
		CITY:			BURLINGTON
		STATE:			MA
		ZIP:			01803

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Kala Pharmaceuticals, Inc.
		CENTRAL INDEX KEY:			0001479419
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				270604595
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		490 ARSENAL WAY
		STREET 2:		SUITE 120
		CITY:			WATERTOWN
		STATE:			MA
		ZIP:			02472
		BUSINESS PHONE:		781-996-5252

	MAIL ADDRESS:	
		STREET 1:		490 ARSENAL WAY
		STREET 2:		SUITE 120
		CITY:			WATERTOWN
		STATE:			MA
		ZIP:			02472
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>form4-10282021_051035.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2021-10-26</periodOfReport>

    <issuer>
        <issuerCik>0001479419</issuerCik>
        <issuerName>Kala Pharmaceuticals, Inc.</issuerName>
        <issuerTradingSymbol>KALA</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001605767</rptOwnerCik>
            <rptOwnerName>Bazemore Todd</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O KALA PHARMACEUTICALS, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>490 ARSENAL WAY, SUITE 120</rptOwnerStreet2>
            <rptOwnerCity>WATERTOWN</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>02472</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>false</isDirector>
            <isOfficer>true</isOfficer>
            <isTenPercentOwner>false</isTenPercentOwner>
            <isOther>false</isOther>
            <officerTitle>CHIEF OPERATING OFFICER</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2021-10-26</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>12544</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>1.80</value>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>122045</value>
                    <footnoteId id="F3"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>42</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By son</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">This sale was made pursuant to a 10b5-1 trading plan to cover tax withholding obligations in connection with the vesting and settlement of the Reporting Person's performance-based restricted stock units (&quot;RSUs&quot;) granted on June 25, 2020.</footnote>
        <footnote id="F2">The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $1.79 to $1.89, inclusive. The Reporting Person undertakes to provide to Kala Pharmaceuticals, Inc., any security holder of Kala Pharmaceuticals, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote to this Form 4.</footnote>
        <footnote id="F3">Includes 77,500 unvested RSUs.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Eric Trachtenberg, Attorney-in-Fact</signatureName>
        <signatureDate>2021-10-28</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
