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

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2023-12-29</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001828811</issuerCik>
        <issuerName>Li-Cycle Holdings Corp.</issuerName>
        <issuerTradingSymbol>LICY</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001877801</rptOwnerCik>
            <rptOwnerName>Johnston Timothy</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O LI-CYCLE HOLDINGS CORP.</rptOwnerStreet1>
            <rptOwnerStreet2>207 QUEENS QUAY WEST, SUITE 590</rptOwnerStreet2>
            <rptOwnerCity>TORONTO</rptOwnerCity>
            <rptOwnerState>A6</rptOwnerState>
            <rptOwnerZipCode>M5J 1A7</rptOwnerZipCode>
            <rptOwnerStateDescription>ONTARIO, CANADA</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>true</isDirector>
            <isOfficer>true</isOfficer>
            <isTenPercentOwner>false</isTenPercentOwner>
            <isOther>false</isOther>
            <officerTitle>Executive Chairman &amp; Director</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Shares</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>593530</value>
                    <footnoteId id="F1"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Shares</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>9047167</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By Keperra Holdings Limited</value>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Stock Option (right-to-buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>10.93</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F3"/>
            </exerciseDate>
            <expirationDate>
                <value>2031-08-10</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Shares</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>176871</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Stock Option (right-to-buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>7.58</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F4"/>
            </exerciseDate>
            <expirationDate>
                <value>2032-01-31</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Shares</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>92105</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Stock Option (right-to-buy)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>5.77</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F5"/>
            </exerciseDate>
            <expirationDate>
                <value>2033-01-27</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Shares</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>253028</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Forward sale contract (obligation to sell)</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F6"/>
                <footnoteId id="F7"/>
                <footnoteId id="F8"/>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F6"/>
                <footnoteId id="F7"/>
                <footnoteId id="F8"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F6"/>
                <footnoteId id="F7"/>
                <footnoteId id="F8"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Shares</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>2000000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By Keperra Holdings Limited</value>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Includes (i) 36,032 restricted stock units (&quot;RSUs&quot;) that vest on August 10, 2024, (ii) 19,239 RSUs that vest on January 31, 2024, (iii) 19,239 RSUs that vest on January 31, 2025, (iv) 48,743 RSUs that vest on January 27, 2024, (v) 48,744 RSUs that vest on January 27, 2025, and (vi) 48,743 RSUs that vest on January 27, 2026.</footnote>
        <footnote id="F2">The reporting person is the sole shareholder of Keperra Holdings Limited (&quot;Keperra Holdings&quot;).</footnote>
        <footnote id="F3">The stock option became exercisable as to 58,957 common shares on August 10, 2022 and 58,957 common shares on August 10, 2023. The stock option becomes exercisable as to the remaining 58,957 common shares on August 10, 2024.</footnote>
        <footnote id="F4">The stock option became exercisable as to 30,702 common shares on January 31, 2023. The stock option becomes exercisable as to 30,701 common shares on January 31, 2024 and 30,702 common shares on January 31, 2025.</footnote>
        <footnote id="F5">The stock option becomes exercisable as to 84,343 common shares on January 27, 2024, 84,342 common shares on January 27, 2025 and 84,343 common shares on January 27, 2026.</footnote>
        <footnote id="F6">As disclosed on the reporting person's Amendment No. 1 to Schedule 13-D, dated May 19, 2023, on May 19, 2023, Keperra Holdings entered into a prepaid variable share forward contract with Citibank, N.A (&quot;Citibank&quot;). The contract obligates Keperra Holdings to deliver to Citibank up to 2,000,000 shares of common shares (&quot;Common Shares&quot;) of Li-Cycle Holdings Corp. (the &quot;Issuer&quot;) (or, at the reporting person's election, an equivalent amount of cash based on the market price of Common Shares at that time) on August 18, 2024, the maturity date of the contract (the &quot;Maturity Date&quot;). In exchange for assuming this obligation, Keperra Holdings has received a cash payment of $2,626,960.00.</footnote>
        <footnote id="F7">(Continued from footnote 6) Keperra Holdings pledged 2,000,000 Common Shares (the &quot;Pledged Shares&quot;) to secure his obligations under the contract and retained dividend and voting rights in the Pledged Shares during the term of the pledge (so long as no event of default or similar event occurs under the variable prepaid forward contract or the related pledge and security agreement). The number of Common Shares to be delivered to Citibank on the Maturity Date is to be determined as follows: (a) if the average closing price of the Common Shares on the date that is ten (10) days prior to the Maturity Date (the &quot;Settlement Price&quot;) is less than or equal to the price (the &quot;Initial Share Price&quot;) at which a particular group of Common Shares were hedged by Citibank (each, an &quot;Applicable Group of Shares&quot;),</footnote>
        <footnote id="F8">(Continued from footnote 7) the reporting person will deliver to Citibank all of the Applicable Group of Shares; (b) if the Settlement Price is between the applicable Initial Share Price and an amount equal to 120% of the Initial Share Price (the &quot;Cap Price&quot;), the reporting person will deliver to the buyer a number of Common Shares having a value (based on the Settlement Price) equal to the applicable Initial Share Price divided by the Settlement Price; and (c) if the Settlement Price is greater than the applicable Cap Price, the reporting person will deliver to the purchaser a number of Common Shares having a value (based on the Settlement Price) equal to (i) the sum of (A) the applicable Initial Share Price plus (B) the Settlement Price minus the applicable Initial Share Price, divided by (ii) the Settlement Price.</footnote>
    </footnotes>

    <remarks>Exhibit 24  Power of Attorney
This Form 3 is being filed because, beginning January 1, 2024, the Issuer will no longer be eligible to use the forms and rules designated by the Securities and Exchange Commission for foreign private issuers (as defined in Rule 3b-4 of the Securities Exchange Act of 1934, as amended).</remarks>

    <ownerSignature>
        <signatureName>/s/ Ajay Kochhar, as Attorney-In-Fact</signatureName>
        <signatureDate>2023-12-29</signatureDate>
    </ownerSignature>
</ownershipDocument>
