<SEC-DOCUMENT>0001662991-24-000305.txt : 20241121
<SEC-HEADER>0001662991-24-000305.hdr.sgml : 20241121
<ACCEPTANCE-DATETIME>20241121160408
ACCESSION NUMBER:		0001662991-24-000305
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20241119
FILED AS OF DATE:		20241121
DATE AS OF CHANGE:		20241121

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Paradis Paul
		CENTRAL INDEX KEY:			0001865019
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-41781
		FILM NUMBER:		241484211

	MAIL ADDRESS:	
		STREET 1:		251 1ST AVENUE N
		STREET 2:		SUITE 200
		CITY:			MINNEAPOLIS
		STATE:			MN
		ZIP:			55401-1672

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Sezzle Inc.
		CENTRAL INDEX KEY:			0001662991
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-BUSINESS SERVICES, NEC [7389]
		ORGANIZATION NAME:           	07 Trade & Services
		IRS NUMBER:				810971660
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		700 NICOLLET MALL
		STREET 2:		SUITE 640
		CITY:			MINNEAPOLIS
		STATE:			MN
		ZIP:			55402
		BUSINESS PHONE:		651-240-6001

	MAIL ADDRESS:	
		STREET 1:		700 NICOLLET MALL
		STREET 2:		SUITE 640
		CITY:			MINNEAPOLIS
		STATE:			MN
		ZIP:			55402
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>wk-form4_1732223034.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0508</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2024-11-19</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001662991</issuerCik>
        <issuerName>Sezzle Inc.</issuerName>
        <issuerTradingSymbol>SEZL</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001865019</rptOwnerCik>
            <rptOwnerName>Paradis Paul</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>700 NICOLLET MALL</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 640</rptOwnerStreet2>
            <rptOwnerCity>MINNEAPOLIS</rptOwnerCity>
            <rptOwnerState>MN</rptOwnerState>
            <rptOwnerZipCode>55402</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Executive Director &amp; President</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>0</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock, par value $0.00001 per share</value>
            </securityTitle>
            <transactionDate>
                <value>2024-11-19</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>13346</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>400.4901</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>55500</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By spouse</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">The sales were effected in multiple transactions at prices ranging from $400.00 to $402.85, inclusive, on November 19, 2024. The price reported in Column 4 is the weighted average price. The reporting person undertakes to provide, upon request, full information regarding the number of shares purchased in each transaction.</footnote>
        <footnote id="F2">This transaction involved the reporting person's gift of 74,432 shares of common stock to his spouse. The reporting person disclaims beneficial ownership of the securities held by his spouse, and this report shall not be deemed an admission that the reporting person is the beneficial owner of the securities for purposes of Section 16 or for any other purpose.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Brady Duane Kafka, as Attorney-in-Fact</signatureName>
        <signatureDate>2024-11-21</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
