<SEC-DOCUMENT>0001805013-25-000003.txt : 20250828
<SEC-HEADER>0001805013-25-000003.hdr.sgml : 20250828
<ACCEPTANCE-DATETIME>20250828160411
ACCESSION NUMBER:		0001805013-25-000003
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20250827
FILED AS OF DATE:		20250828
DATE AS OF CHANGE:		20250828

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			McLain William Thomas Jr.
		CENTRAL INDEX KEY:			0001805013
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-12626
		FILM NUMBER:		251273312

	MAIL ADDRESS:	
		STREET 1:		200 SOUTH WILCOX DRIVE
		CITY:			KINGSPORT
		STATE:			TN
		ZIP:			37660

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			EASTMAN CHEMICAL CO
		CENTRAL INDEX KEY:			0000915389
		STANDARD INDUSTRIAL CLASSIFICATION:	PLASTICS, MATERIALS, SYNTH RESINS & NONVULCAN ELASTOMERS [2821]
		ORGANIZATION NAME:           	08 Industrial Applications and Services
		EIN:				621539359
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		PO BOX 511
		STREET 2:		200 SOUTH WILCOX DRIVE
		CITY:			KINGSPORT
		STATE:			TN
		ZIP:			37660
		BUSINESS PHONE:		4232292000

	MAIL ADDRESS:	
		STREET 1:		P O BOX 511 B-54D
		CITY:			KINGSPORT
		STATE:			TN
		ZIP:			37662
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>wk-form4_1756411448.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0508</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2025-08-27</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000915389</issuerCik>
        <issuerName>EASTMAN CHEMICAL CO</issuerName>
        <issuerTradingSymbol>EMN</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001805013</rptOwnerCik>
            <rptOwnerName>McLain William Thomas Jr.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>200 S. WILCOX DRIVE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>KINGSPORT</rptOwnerCity>
            <rptOwnerState>TN</rptOwnerState>
            <rptOwnerZipCode>37660</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>EVP,  CFO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>0</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2025-08-27</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>3670</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>68.73</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>53524</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">Average weighted price for shares purchased of in the reported transaction. The shares were purchased at various prices per share ranging from $68.33 to $69.16. The reporting person undertakes to provide to the issuer, any stockholder of the issuer, or the staff of the Securities and Exchange commission, upon request, full information regarding the number of shares sold at each separate price with the ranges set forth in this footnote.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Mark D. Austin, by Power of Attorney for Willian T. McLain Jr.</signatureName>
        <signatureDate>2025-08-28</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
