<SEC-DOCUMENT>0001083301-26-000041.txt : 20260319
<SEC-HEADER>0001083301-26-000041.hdr.sgml : 20260319
<ACCEPTANCE-DATETIME>20260319212123
ACCESSION NUMBER:		0001083301-26-000041
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20260317
FILED AS OF DATE:		20260319
DATE AS OF CHANGE:		20260319

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Fleury Patrick
		CENTRAL INDEX KEY:			0001652256
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-41163
		FILM NUMBER:		26775921

	MAIL ADDRESS:	
		STREET 1:		C/O GSO CAPTTAL PARTNERS LP
		STREET 2:		345 PARK AVENUE
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10154

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			TERAWULF INC.
		CENTRAL INDEX KEY:			0001083301
		STANDARD INDUSTRIAL CLASSIFICATION:	FINANCE SERVICES [6199]
		ORGANIZATION NAME:           	09 Crypto Assets
		EIN:				871909475
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		9 FEDERAL STREET
		CITY:			EASTON
		STATE:			MD
		ZIP:			21601
		BUSINESS PHONE:		(410) 770-9500

	MAIL ADDRESS:	
		STREET 1:		9 FEDERAL STREET
		CITY:			EASTON
		STATE:			MD
		ZIP:			21601

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	IKONICS CORP
		DATE OF NAME CHANGE:	20021216

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	CHROMALINE CORP
		DATE OF NAME CHANGE:	19990405
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>wk-form4_1773969680.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0609</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2026-03-17</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001083301</issuerCik>
        <issuerName>TERAWULF INC.</issuerName>
        <issuerTradingSymbol>WULF</issuerTradingSymbol>
        <issuerForeignTradingSymbol></issuerForeignTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001652256</rptOwnerCik>
            <rptOwnerName>Fleury Patrick</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O TERAWULF INC.</rptOwnerStreet1>
            <rptOwnerStreet2>9 FEDERAL STREET</rptOwnerStreet2>
            <rptOwnerCity>EASTON</rptOwnerCity>
            <rptOwnerState>MD</rptOwnerState>
            <rptOwnerZipCode>21601</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chief Financial Officer</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>0</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common stock, $0.001 par value per share</value>
            </securityTitle>
            <transactionDate>
                <value>2026-03-17</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>573586</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>16.14</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>3205000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common stock, $0.001 par value per share</value>
            </securityTitle>
            <transactionDate>
                <value>2026-03-17</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>26414</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>16.14</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By Teton Rough Riders Mining LLC</value>
                    <footnoteId id="F1"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">By Teton Rough Riders Mining LLC. The Reporting Person is a managing manager of Teton Rough Riders Mining LLC and, as a result, may be deemed to beneficially own the shares of the Issuer's common stock, $0.001 par value per share (the &quot;Common Stock&quot;) held by Teton Rough Riders Mining LLC. The Reporting Person disclaims beneficial ownership of such shares of Common Stock except to the extent of his pecuniary interest therein, and the inclusion of such shares of Common Stock in this report shall not be deemed an admission of beneficial ownership of all of the reported shares of the Common Stock for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Patrick Fleury</signatureName>
        <signatureDate>2026-03-19</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
