<SEC-DOCUMENT>0002122308-26-000001.txt : 20260318
<SEC-HEADER>0002122308-26-000001.hdr.sgml : 20260318
<ACCEPTANCE-DATETIME>20260318182458
ACCESSION NUMBER:		0002122308-26-000001
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20260318
FILED AS OF DATE:		20260318
DATE AS OF CHANGE:		20260318

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Kyriakopoulos Panagiotis
		CENTRAL INDEX KEY:			0002122308
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-33283
		FILM NUMBER:		26771174

	MAIL ADDRESS:	
		ADDRESS IS A NON US LOCATION: 	YES
		STREET 1:		4 MESSOGEIOU & EVROPIS STREET
		CITY:			MAROUSSI
		PROVINCE COUNTRY:   	J3
		ZIP:			151 24

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			EUROSEAS LTD.
		CENTRAL INDEX KEY:			0001341170
		STANDARD INDUSTRIAL CLASSIFICATION:	DEEP SEA FOREIGN TRANSPORTATION OF FREIGHT [4412]
		ORGANIZATION NAME:           	01 Energy & Transportation
		EIN:				000000000

	BUSINESS ADDRESS:	
		STREET 1:		4 MESSOGIOU & EVROPIS STREET
		CITY:			151 25 MAROUSSI
		STATE:			J3
		ZIP:			00000
		BUSINESS PHONE:		011 30 210 6105110

	MAIL ADDRESS:	
		STREET 1:		4 MESSOGIOU & EVROPIS STREET
		CITY:			151 25 MAROUSSI
		STATE:			J3
		ZIP:			00000
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0607</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2026-03-18</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001341170</issuerCik>
        <issuerName>EUROSEAS LTD.</issuerName>
        <issuerTradingSymbol>ESEA</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0002122308</rptOwnerCik>
            <rptOwnerName>Kyriakopoulos Panagiotis</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerNonUSAddressFlag>true</rptOwnerNonUSAddressFlag>
            <rptOwnerStreet1>4 MESSOGEIOU &amp; EVROPIS STREET</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>MAROUSSI</rptOwnerCity>
            <rptOwnerNonUSStateTerritory></rptOwnerNonUSStateTerritory>
            <rptOwnerCountry>J3</rptOwnerCountry>
            <rptOwnerZipCode>151 24</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common stock</value>
                <footnoteId id="F1"/>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>14500</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Includes 2,100 of unvested incentive stock awards, of which 700 will vest on  July 1, 2026, 700 shares will vest on November 13, 2026 and 700 shares will vest  on July 1, 2027.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Panagiotis Kyriakopoulos</signatureName>
        <signatureDate>2026-03-18</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
