<SEC-DOCUMENT>0001209191-23-024337.txt : 20230414
<SEC-HEADER>0001209191-23-024337.hdr.sgml : 20230414
<ACCEPTANCE-DATETIME>20230414164645
ACCESSION NUMBER:		0001209191-23-024337
CONFORMED SUBMISSION TYPE:	4/A
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20230206
FILED AS OF DATE:		20230414
DATE AS OF CHANGE:		20230414

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Gregoriou Vassilios
		CENTRAL INDEX KEY:			0001843793

	FILING VALUES:
		FORM TYPE:		4/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-38742
		FILM NUMBER:		23821776

	MAIL ADDRESS:	
		STREET 1:		ONE MIFFLIN PLACE
		STREET 2:		119 MT. AUBURN STREET, SUITE 400
		CITY:			CAMBRIDGE
		STATE:			MA
		ZIP:			02138

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>2023-02-06</periodOfReport>

    <dateOfOriginalSubmission>2023-02-07</dateOfOriginalSubmission>

    <notSubjectToSection16>0</notSubjectToSection16>

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

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001843793</rptOwnerCik>
            <rptOwnerName>Gregoriou Vassilios</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>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>CEO, Chair</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>0</aff10b5One>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2023-02-06</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>18642</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>1.9991</value>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>6543982</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2023-02-07</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>34338</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>1.9588</value>
                    <footnoteId id="F3"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>6509644</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2023-02-08</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>22696</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>1.9179</value>
                    <footnoteId id="F4"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>6486948</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Aggregate number of shares sold on the same date at different prices. Shares sold by Reporting Person solely to satisfy income tax and withholding and remittance obligations in connection with the vesting and net settlement of Restricted Stock Units.</footnote>
        <footnote id="F2">Weighted average sale price. The shares were sold in multiple transactions at prices ranging from $1.974963 to $2.05, inclusive. Reporting Person undertakes to provide to Issuer, any security holder of Issuer, or the staff of the Securities and Exchange Commission (the &quot;Staff&quot;), upon request, full information regarding the number of shares sold at each separate price within the range set forth herein.</footnote>
        <footnote id="F3">Represents the weighted average sale price. The shares were sold in multiple transactions at prices ranging from $1.93497 to $1.99499, inclusive. Reporting Person undertakes to provide to Issuer, any security holder of Issuer, or the Staff, upon request, full information regarding the number of shares sold at each separate price within the range set forth herein.</footnote>
        <footnote id="F4">Represents the weighted average sale price. The shares were sold in multiple transactions at prices ranging from $1.90655 to $1.945296, inclusive. Reporting Person undertakes to provide to Issuer, any security holder of Issuer, or the staff of the Securities and Exchange Commission (the &quot;Staff&quot;), upon request, full information regarding the number of shares sold at each separate price within the range set forth herein.</footnote>
    </footnotes>

    <remarks>This Form 4 amendment is being filed to correct inadvertent errors in the Form 4 filed by Reporting Person on February 7, 2023.</remarks>

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