<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2016-02-05</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001660719</issuerCik>
        <issuerName>Aralez Pharmaceuticals Inc.</issuerName>
        <issuerTradingSymbol>ARLZ</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001441461</rptOwnerCik>
            <rptOwnerName>Glickman Mark A</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O ARALEZ PHARMACEUTICALS INC.</rptOwnerStreet1>
            <rptOwnerStreet2>2800 PARK PLACE 666 BURRARD STREET</rptOwnerStreet2>
            <rptOwnerCity>VANCOUVER</rptOwnerCity>
            <rptOwnerState>A1</rptOwnerState>
            <rptOwnerZipCode>V6C2Z7</rptOwnerZipCode>
            <rptOwnerStateDescription>BRITISH COLUMBIA, CANADA</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chief Commercial Officer</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Shares</value>
            </securityTitle>
            <transactionDate>
                <value>2016-02-05</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>5</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionTimeliness>
                <value>E</value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>29137</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>29137</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Reflects the beneficial ownership of the reporting person following consummation of the business transaction  among POZEN Inc.  (&quot;Pozen&quot;), Tribute Pharmaceuticals Canada Inc. (&quot;Tribute&quot;) and the Registrant on February 5, 2016, pursuant to the Agreement and Plan of Merger and Arrangement as entered into on June 8, 2015 and as amended on August 19, 2015 and December 7, 2015 among Pozen, Tribute, the Registrant, Aralez Pharmaceuticals Holdings Limited, ARLZ US Acquisition II Corp., and ARLZ CA Acquisition Corp. (the &quot;Merger&quot;).</footnote>
        <footnote id="F2">Represents 29,137 shares issuable pursuant to Restricted Stock Units previously granted by Pozen, predecessor to the Registrant.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Eric L. Trachtenberg, attorney-in -fact for Mark A. Glickman</signatureName>
        <signatureDate>2016-02-09</signatureDate>
    </ownerSignature>
</ownershipDocument>
