<SEC-DOCUMENT>0001615219-22-000091.txt : 20220606
<SEC-HEADER>0001615219-22-000091.hdr.sgml : 20220606
<ACCEPTANCE-DATETIME>20220606202843
ACCESSION NUMBER:		0001615219-22-000091
CONFORMED SUBMISSION TYPE:	4/A
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20200211
FILED AS OF DATE:		20220606
DATE AS OF CHANGE:		20220606

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			HANISH ARNOLD C
		CENTRAL INDEX KEY:			0001233253

	FILING VALUES:
		FORM TYPE:		4/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-36812
		FILM NUMBER:		22999597

	MAIL ADDRESS:	
		STREET 1:		201 ELLIOTT AVENUE WEST
		CITY:			SEATTLE
		STATE:			WA
		ZIP:			98119

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Salarius Pharmaceuticals, Inc.
		CENTRAL INDEX KEY:			0001615219
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				465087339
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		2450 HOLCOMBE BLVD
		STREET 2:		SUITE J-608
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77021
		BUSINESS PHONE:		346-772-0346

	MAIL ADDRESS:	
		STREET 1:		2450 HOLCOMBE BLVD
		STREET 2:		SUITE J-608
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77021

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Flex Pharma, Inc.
		DATE OF NAME CHANGE:	20140730
</SEC-HEADER>
<DOCUMENT>
<TYPE>4/A
<SEQUENCE>1
<FILENAME>wf-form4a_165456170682482.xml
<DESCRIPTION>FORM 4/A
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4/A</documentType>

    <periodOfReport>2020-02-11</periodOfReport>

    <dateOfOriginalSubmission>2020-02-12</dateOfOriginalSubmission>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001615219</issuerCik>
        <issuerName>Salarius Pharmaceuticals, Inc.</issuerName>
        <issuerTradingSymbol>SLRX</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001233253</rptOwnerCik>
            <rptOwnerName>HANISH ARNOLD C</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O SALARIUS PHARMACEUTICALS, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>2450 HOLCOMBE BLVD., SUITE X</rptOwnerStreet2>
            <rptOwnerCity>HOUSTON</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>77021</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
                <footnoteId id="F1"/>
            </securityTitle>
            <transactionDate>
                <value>2020-02-11</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>4350</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>1.15</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>7350</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By Arnold C. Hanish Trust</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">This Form 4/A is being filed to amend the Form 4 filed by the Reporting Person on February 12, 2020 to reflect that the securities reported are indirectly beneficially owned as indicated herein.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/David Arthur, as Attorney-in-Fact</signatureName>
        <signatureDate>2022-06-07</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
