<SEC-DOCUMENT>0001079973-26-000451.txt : 20260408
<SEC-HEADER>0001079973-26-000451.hdr.sgml : 20260408
<ACCEPTANCE-DATETIME>20260408075053
ACCESSION NUMBER:		0001079973-26-000451
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20260401
FILED AS OF DATE:		20260408
DATE AS OF CHANGE:		20260408

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Ciesla Craig
		CENTRAL INDEX KEY:			0001908748
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-40766
		FILM NUMBER:		26846529

	MAIL ADDRESS:	
		STREET 1:		369 INVERNESS PARKWAY
		STREET 2:		SUITE 350
		CITY:			ENGLEWOOD
		STATE:			CO
		ZIP:			80112

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Lightwave Logic, Inc.
		CENTRAL INDEX KEY:			0001325964
		STANDARD INDUSTRIAL CLASSIFICATION:	MISCELLANEOUS PLASTIC PRODUCTS [3080]
		ORGANIZATION NAME:           	08 Industrial Applications and Services
		EIN:				820497368
		STATE OF INCORPORATION:			NV
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		369 INVERNESS PARKWAY
		STREET 2:		SUITE 350
		CITY:			ENGLEWOOD
		STATE:			CO
		ZIP:			80112
		BUSINESS PHONE:		(720) 340-4949

	MAIL ADDRESS:	
		STREET 1:		369 INVERNESS PARKWAY
		STREET 2:		SUITE 350
		CITY:			ENGLEWOOD
		STATE:			CO
		ZIP:			80112

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	THIRD-ORDER NANOTECHNOLOGIES INC
		DATE OF NAME CHANGE:	20070320

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	THIRD-ORDER NANOTECHNOLOIES INC
		DATE OF NAME CHANGE:	20070222

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	PSI TEC HOLDINGS INC
		DATE OF NAME CHANGE:	20050503
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>ownership.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0609</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2026-04-01</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001325964</issuerCik>
        <issuerName>Lightwave Logic, Inc.</issuerName>
        <issuerTradingSymbol>LWLG</issuerTradingSymbol>
        <issuerForeignTradingSymbol></issuerForeignTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001908748</rptOwnerCik>
            <rptOwnerName>Ciesla Craig</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerNonUSAddressFlag>false</rptOwnerNonUSAddressFlag>
            <rptOwnerStreet1>369 INVERNESS PARKWAY</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 350</rptOwnerStreet2>
            <rptOwnerCity>ENGLEWOOD</rptOwnerCity>
            <rptOwnerState>CO</rptOwnerState>
            <rptOwnerZipCode>80112</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>0</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2026-04-01</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>11000</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>6.81</value>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>118824</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">The sale reported in this Form 4 was to cover the tax withholding obligations associated with RSU vestings on March 31, 2026.</footnote>
        <footnote id="F2">The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $6.81 to $6.831, inclusive. The reporting person undertakes to provide to Lightwave Logic, Inc., any security holder of Lightwave Logic, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate
price within the ranges set forth above.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Craig Ciesla</signatureName>
        <signatureDate>2026-04-08</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
