<SEC-DOCUMENT>0001209191-23-024339.txt : 20230414
<SEC-HEADER>0001209191-23-024339.hdr.sgml : 20230414
<ACCEPTANCE-DATETIME>20230414164758
ACCESSION NUMBER:		0001209191-23-024339
CONFORMED SUBMISSION TYPE:	4/A
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20210611
FILED AS OF DATE:		20230414
DATE AS OF CHANGE:		20230414

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Kaskavelis Christos
		CENTRAL INDEX KEY:			0001512086

	FILING VALUES:
		FORM TYPE:		4/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-38742
		FILM NUMBER:		23821781

	MAIL ADDRESS:	
		STREET 1:		SYNTAGMATARCHOU DAVAKI 1
		CITY:			FILOTHEI
		STATE:			J3
		ZIP:			15237

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ADVENT TECHNOLOGIES HOLDINGS, INC.
		CENTRAL INDEX KEY:			0001744494
		STANDARD INDUSTRIAL CLASSIFICATION:	MISCELLANEOUS ELECTRICAL MACHINERY, EQUIPMENT & SUPPLIES [3690]
		IRS NUMBER:				830982969
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		500 RUTHERFORD AVENUE
		STREET 2:		SUITE 102
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02129
		BUSINESS PHONE:		857-264-7035

	MAIL ADDRESS:	
		STREET 1:		500 RUTHERFORD AVENUE
		STREET 2:		SUITE 102
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02129

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	AMCI Acquisition Corp.
		DATE OF NAME CHANGE:	20180622
</SEC-HEADER>
<DOCUMENT>
<TYPE>4/A
<SEQUENCE>1
<FILENAME>doc4a.xml
<DESCRIPTION>FORM 4/A SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0407</schemaVersion>

    <documentType>4/A</documentType>

    <periodOfReport>2021-06-11</periodOfReport>

    <dateOfOriginalSubmission>2021-06-15</dateOfOriginalSubmission>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001744494</issuerCik>
        <issuerName>ADVENT TECHNOLOGIES HOLDINGS, INC.</issuerName>
        <issuerTradingSymbol>ADN</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001512086</rptOwnerCik>
            <rptOwnerName>Kaskavelis Christos</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>500 RUTHERFORD AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 102</rptOwnerStreet2>
            <rptOwnerCity>BOSTON</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>02129</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>CMO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>0</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
                <footnoteId id="F1"/>
            </securityTitle>
            <transactionDate>
                <value>2021-06-11</value>
            </transactionDate>
            <deemedExecutionDate>
                <value>2021-02-04</value>
            </deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>345794</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2247502</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1802405</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By Nemaland Ltd.</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Represents 345,794 restricted stock units that is a contingent right to receive common stock upon vesting granted pursuant to the Advent Technologies Holdings, Inc. 2021 Equity Incentive Plan, dated as of February 4, 2021. The restricted stock units will vest 25% upon each anniversary of February 4, 2021, the vesting commencement date, until the fourth anniversary of the vesting commencement date.</footnote>
        <footnote id="F2">Reflects shares of Issuer's common stock beneficially owned through Nemaland Ltd.</footnote>
    </footnotes>

    <remarks>This Form 4A amends and restates Table I of the Form 4 filed June 15, 2021, which inadvertently incorrectly stated the Reporting Person's aggregate shares of common stock owned directly and indirectly following the grant reported on such Form 4.</remarks>

    <ownerSignature>
        <signatureName>/s/ Christos Kaskavelis</signatureName>
        <signatureDate>2023-04-14</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
