<SEC-DOCUMENT>0001600805-21-000005.txt : 20210527
<SEC-HEADER>0001600805-21-000005.hdr.sgml : 20210527
<ACCEPTANCE-DATETIME>20210527065019
ACCESSION NUMBER:		0001600805-21-000005
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20210526
FILED AS OF DATE:		20210527
DATE AS OF CHANGE:		20210527

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Jag International Co Ltd.
		CENTRAL INDEX KEY:			0001544485
		STATE OF INCORPORATION:			D8
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-36583
		FILM NUMBER:		21968476

	BUSINESS ADDRESS:	
		STREET 1:		12 F, NO. 383, SEC 4, REN-AI ROAD
		STREET 2:		DA-AN DISTRICT
		CITY:			TAIPEI
		STATE:			F5
		ZIP:			106
		BUSINESS PHONE:		886-921-812-983

	MAIL ADDRESS:	
		STREET 1:		12 F, NO. 383, SEC 4, REN-AI ROAD
		STREET 2:		DA-AN DISTRICT
		CITY:			TAIPEI
		STATE:			F5
		ZIP:			106

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Brilliant Start Enterprise, Inc.
		CENTRAL INDEX KEY:			0001600870

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-36583
		FILM NUMBER:		21968475

	BUSINESS ADDRESS:	
		STREET 1:		PORTCULLIS TRUSTNET CHAMBERS
		CITY:			ROAD TOWN, TORTOLA
		STATE:			D8
		ZIP:			3444
		BUSINESS PHONE:		440-715-1291

	MAIL ADDRESS:	
		STREET 1:		PORTCULLIS TRUSTNET CHAMBERS
		CITY:			ROAD TOWN, TORTOLA
		STATE:			D8
		ZIP:			3444

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Huang Gina
		CENTRAL INDEX KEY:			0001600805

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-36583
		FILM NUMBER:		21968477

	MAIL ADDRESS:	
		STREET 1:		C/O ENERGY FOCUS, INC.
		STREET 2:		32000 AURORA ROAD
		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]
		IRS NUMBER:				943021850
		STATE OF INCORPORATION:			DE
		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>
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<TYPE>4
<SEQUENCE>1
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<DESCRIPTION>FORM 4
<TEXT>
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<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2021-05-26</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

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

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001600805</rptOwnerCik>
            <rptOwnerName>Huang Gina</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>32000 AURORA ROAD</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE B</rptOwnerStreet2>
            <rptOwnerCity>SOLON</rptOwnerCity>
            <rptOwnerState>OH</rptOwnerState>
            <rptOwnerZipCode>44139</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001544485</rptOwnerCik>
            <rptOwnerName>Jag International Co Ltd.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>3F-4, NO.9, MIN QUAN EAST ROAD</rptOwnerStreet1>
            <rptOwnerStreet2>SECTION 3 LANE 140 SONG SHAN DISTRICT</rptOwnerStreet2>
            <rptOwnerCity>TAIPEI CITY</rptOwnerCity>
            <rptOwnerState>F5</rptOwnerState>
            <rptOwnerZipCode>105</rptOwnerZipCode>
            <rptOwnerStateDescription>TAIWAN, PROVINCE OF CHINA</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001600870</rptOwnerCik>
            <rptOwnerName>Brilliant Start Enterprise, Inc.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>3F-4, NO.9, MIN QUAN EAST ROAD</rptOwnerStreet1>
            <rptOwnerStreet2>SECTION 3 LANE 140 SONG SHAN DISTRICT</rptOwnerStreet2>
            <rptOwnerCity>TAIPEI CITY</rptOwnerCity>
            <rptOwnerState>F5</rptOwnerState>
            <rptOwnerZipCode>105</rptOwnerZipCode>
            <rptOwnerStateDescription>TAIWAN, PROVINCE OF CHINA</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2021-05-26</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>10000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>376832</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnote</value>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Restricted Stock Units</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F1"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2021-05-26</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>10000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F3"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F3"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>10000.0</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F4"/>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Restricted stock units convert into Common Stock on a one-for-one basis.</footnote>
        <footnote id="F2">Consists of 242,832 shares of common stock held by Brilliant Start Enterprise, Inc. (&quot;Brilliant Start&quot;), 120,000 shares of common stock held by Jag International Ltd. (&quot;Jag&quot;) and 14,000 shares held by Ms. Huang directly. Brilliant Start and Jag are controlled affiliates of Ms. Huang.</footnote>
        <footnote id="F3">On March 24, 2021, Ms. Huang was granted 10,000 restricted stock units that vested May 26, 2021, the earlier of (i) the one year anniversary of the grant date or (ii) the date of the Company's annual meeting of stockholders next following the grant date.</footnote>
        <footnote id="F4">The restricted stock units were held directly by Ms. Huang.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Gina Huang (Mei-Yun Huang)</signatureName>
        <signatureDate>2021-05-27</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>Jag International Ltd. By: /s/ Gina Huang (Mei-Yun Huang), General Partner</signatureName>
        <signatureDate>2021-05-27</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>Brilliant Start Enterprise, Inc. By: /s/ Gina Huang (Mei-Yun Huang), General Partner</signatureName>
        <signatureDate>2021-05-27</signatureDate>
    </ownerSignature>
</ownershipDocument>
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</TEXT>
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</SEC-DOCUMENT>
