<SEC-DOCUMENT>0001628280-25-040712.txt : 20250819
<SEC-HEADER>0001628280-25-040712.hdr.sgml : 20250819
<ACCEPTANCE-DATETIME>20250819060455
ACCESSION NUMBER:		0001628280-25-040712
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20250815
FILED AS OF DATE:		20250819
DATE AS OF CHANGE:		20250819

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Huang Chiao Chieh
		CENTRAL INDEX KEY:			0001964786
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-36583
		FILM NUMBER:		251229569

	MAIL ADDRESS:	
		STREET 1:		32000 AURORA RD.
		STREET 2:		SUITE B
		CITY:			SOLON
		STATE:			OH
		ZIP:			44139

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ENERGY FOCUS, INC/DE
		CENTRAL INDEX KEY:			0000924168
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTRIC LIGHTING & WIRING EQUIPMENT [3640]
		ORGANIZATION NAME:           	04 Manufacturing
		EIN:				943021850
		STATE OF INCORPORATION:			OH
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		32000 AURORA ROAD
		STREET 2:		SUITE B
		CITY:			SOLON
		STATE:			OH
		ZIP:			44139
		BUSINESS PHONE:		4407151300

	MAIL ADDRESS:	
		STREET 1:		32000 AURORA ROAD
		STREET 2:		SUITE B
		CITY:			SOLON
		STATE:			OH
		ZIP:			44139

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	FIBERSTARS INC /CA/
		DATE OF NAME CHANGE:	19940527
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>wk-form4_1755597890.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0508</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2025-08-15</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000924168</issuerCik>
        <issuerName>ENERGY FOCUS, INC/DE</issuerName>
        <issuerTradingSymbol>EFOI</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001964786</rptOwnerCik>
            <rptOwnerName>Huang Chiao Chieh</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>32000 AURORA RD.</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE B</rptOwnerStreet2>
            <rptOwnerCity>SOLON</rptOwnerCity>
            <rptOwnerState>OH</rptOwnerState>
            <rptOwnerZipCode>44139</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chief Executive Officer</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>0</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2025-08-15</value>
            </transactionDate>
            <deemedExecutionDate>
                <value>2025-08-15</value>
            </deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>5</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value>E</value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>264550</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>1.89</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1159210</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>42788</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>Shares held by Sander Electronics, a controlled affiliate of Mr. Huang.</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>534592</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>Shares held by SANDER ELECTRONIC CO., LTD., a controlled affiliate of Mr. Huang.</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>428077</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>Shares held by INWOOD HOLDING LIMITED, a controlled affiliate of Mr. Huang.</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes></footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Gianas Randy Harrison, as Attorney-in-Fact</signatureName>
        <signatureDate>2025-08-19</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
