<SEC-DOCUMENT>0001628280-22-005308.txt : 20220307
<SEC-HEADER>0001628280-22-005308.hdr.sgml : 20220307
<ACCEPTANCE-DATETIME>20220307193200
ACCESSION NUMBER:		0001628280-22-005308
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20220307
FILED AS OF DATE:		20220307
DATE AS OF CHANGE:		20220307

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Haggerty Mary
		CENTRAL INDEX KEY:			0001849353

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-36844
		FILM NUMBER:		22719902

	MAIL ADDRESS:	
		STREET 1:		13190 SW 68TH PARKWAY
		STREET 2:		SUITE 110
		CITY:			TIGARD
		STATE:			OR
		ZIP:			97223

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Great Ajax Corp.
		CENTRAL INDEX KEY:			0001614806
		STANDARD INDUSTRIAL CLASSIFICATION:	REAL ESTATE INVESTMENT TRUSTS [6798]
		IRS NUMBER:				465211780
		STATE OF INCORPORATION:			MD
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		13190 SW 68TH PARKWAY
		STREET 2:		SUITE 110
		CITY:			TIGARD
		STATE:			OR
		ZIP:			97223
		BUSINESS PHONE:		503-505-5670

	MAIL ADDRESS:	
		STREET 1:		13190 SW 68TH PARKWAY
		STREET 2:		SUITE 110
		CITY:			TIGARD
		STATE:			OR
		ZIP:			97223
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>wf-form4_164669950236648.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2022-03-07</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001614806</issuerCik>
        <issuerName>Great Ajax Corp.</issuerName>
        <issuerTradingSymbol>AJX</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001849353</rptOwnerCik>
            <rptOwnerName>Haggerty Mary</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>13190 SW 68TH PARKWAY</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 110</rptOwnerStreet2>
            <rptOwnerCity>TIGARD</rptOwnerCity>
            <rptOwnerState>OR</rptOwnerState>
            <rptOwnerZipCode>97223</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, par value $0.01 per share</value>
            </securityTitle>
            <transactionDate>
                <value>2022-03-07</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>694</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>14.40</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>5004</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">Payment of director fees for fourth quarter ended December 31, 2021. Price per share is the average closing price per share for the first five days preceding the dividend record date of November 15, 2021.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Mary Haggerty</signatureName>
        <signatureDate>2022-03-07</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
