<SEC-DOCUMENT>0001829126-24-002100.txt : 20240401
<SEC-HEADER>0001829126-24-002100.hdr.sgml : 20240401
<ACCEPTANCE-DATETIME>20240401164912
ACCESSION NUMBER:		0001829126-24-002100
CONFORMED SUBMISSION TYPE:	NT 10-K
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20231231
FILED AS OF DATE:		20240401
DATE AS OF CHANGE:		20240401
EFFECTIVENESS DATE:		20240401

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ADVENT TECHNOLOGIES HOLDINGS, INC.
		CENTRAL INDEX KEY:			0001744494
		STANDARD INDUSTRIAL CLASSIFICATION:	MISCELLANEOUS ELECTRICAL MACHINERY, EQUIPMENT & SUPPLIES [3690]
		ORGANIZATION NAME:           	04 Manufacturing
		IRS NUMBER:				830982969
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		NT 10-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-38742
		FILM NUMBER:		24810319

	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>NT 10-K
<SEQUENCE>1
<FILENAME>adventtechnologies_nt10k.htm
<DESCRIPTION>NT 10-K
<TEXT>
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<P STYLE="font: 18pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></P>

<P STYLE="font: 18pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><FONT STYLE="font-size: 10pt"></FONT></P>

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<P STYLE="font: 18pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></P>

<P STYLE="font: 18pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>UNITED STATES </B></P>

<P STYLE="font: 18pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>SECURITIES AND EXCHANGE COMMISSION </B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Washington, D.C. 20549 </B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>&nbsp;</B></P>

<P STYLE="font: 18pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>FORM 12b-25 </B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><FONT STYLE="font-size: 12pt"><B>NOTIFICATION
OF LATE FILING</B></FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">SEC File Number: 001-38742</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">CUSIP Number: 00165R101</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <TR>
    <TD STYLE="vertical-align: top; padding: 0.25pt; font-size: 10pt; text-align: right; width: 28%"><FONT STYLE="font-size: 10pt">(Check one):&nbsp;&nbsp;&nbsp;&nbsp;</FONT></TD>
    <TD STYLE="vertical-align: bottom; padding: 0.25pt; font-size: 10pt; width: 1%">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding: 0.25pt; width: 71%">
    <P STYLE="text-align: left; font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif">&#9746;</FONT>&nbsp;&nbsp;Form&nbsp;10-K&nbsp;&nbsp;&nbsp;&nbsp;
    <FONT STYLE="font-family: Times New Roman, Times, Serif">&#9744;</FONT>&nbsp;&nbsp;Form&nbsp;20-F&nbsp;&nbsp;&nbsp;&nbsp; <FONT STYLE="font-family: Times New Roman, Times, Serif">&#9744;</FONT>&nbsp;&nbsp;Form&nbsp;11-K&nbsp;&nbsp;&nbsp;<FONT STYLE="font-family: Times New Roman, Times, Serif">&#9744;</FONT>&nbsp;&nbsp;&nbsp;Form&nbsp;10-Q</P>
    <P STYLE="text-align: left; font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif">&#9744;</FONT>&nbsp;&nbsp;Form&nbsp;10-D&nbsp;&nbsp;&nbsp;&nbsp;
    <FONT STYLE="font-family: Times New Roman, Times, Serif">&#9744;</FONT>&nbsp;&nbsp;Form&nbsp;N-CEN&nbsp;&nbsp;&nbsp;&nbsp; <FONT STYLE="font-family: Times New Roman, Times, Serif">&#9744;</FONT>&nbsp;&nbsp;Form&nbsp;N-CSR</P></TD></TR>
  <TR>
    <TD STYLE="padding: 0.25pt">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="padding: 0.25pt">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; padding: 0.25pt">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding: 0.25pt; font-size: 10pt">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding: 0.25pt; font-size: 10pt"><FONT STYLE="font-size: 10pt">For Period Ended: <B>December 31, 2023</B></FONT></TD></TR>
  <TR>
    <TD STYLE="padding: 0.25pt">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="padding: 0.25pt">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; padding: 0.25pt">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding: 0.25pt; font-size: 10pt">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding: 0.25pt; font-size: 10pt"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&#9744;</FONT> <FONT STYLE="font-size: 10pt">Transition Report on Form 10-K</FONT></TD></TR>
  <TR>
    <TD STYLE="padding: 0.25pt">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="padding: 0.25pt">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; padding: 0.25pt">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding: 0.25pt; font-size: 10pt">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding: 0.25pt; font-size: 10pt"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&#9744;</FONT> <FONT STYLE="font-size: 10pt">Transition Report on Form 20-F</FONT></TD></TR>
  <TR>
    <TD STYLE="padding: 0.25pt">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="padding: 0.25pt">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; padding: 0.25pt">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding: 0.25pt; font-size: 10pt">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding: 0.25pt; font-size: 10pt"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&#9744;</FONT> <FONT STYLE="font-size: 10pt">Transition Report on Form 11-K</FONT></TD></TR>
  <TR>
    <TD STYLE="padding: 0.25pt">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="padding: 0.25pt">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; padding: 0.25pt">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding: 0.25pt; font-size: 10pt">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding: 0.25pt; font-size: 10pt"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&#9744;</FONT> <FONT STYLE="font-size: 10pt">Transition Report on Form 10-Q</FONT></TD></TR>
  <TR>
    <TD STYLE="padding: 0.25pt">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="padding: 0.25pt">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; padding: 0.25pt">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding: 0.25pt; font-size: 10pt">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding: 0.25pt; font-size: 10pt"><FONT STYLE="font-size: 10pt">For the Transition Period Ended:</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

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    <TD STYLE="border: Black 1pt solid; padding: 0.25pt 2.4pt 0.4pt 8.4pt; width: 100%">
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><I>Read Instructions (on back page) Before Preparing
    Form. Please Print or Type.</I></P>
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Nothing in this form shall be construed to imply
    that the Commission has verified any information contained herein.</B></P>

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  </TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">If the notification relates to a portion of the filing checked above,
identify the Item(s) to which the notification relates:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>PART I&mdash;REGISTRANT INFORMATION </B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>Advent Technologies Holdings, Inc. </B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Full Name of Registrant</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>AMCI Acquisition Corp.</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Former Name if Applicable</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>500 Rutherford Avenue Suite 102</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Address of Principal Executive Office (Street and Number)</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>Boston, MA 02129</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">City, State and Zip Code</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B></B></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>PART II&mdash;RULES 12b-25(b) AND (c) </B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="text-align: justify; font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">If the subject report could not be filed without unreasonable effort
or expense and the registrant seeks relief pursuant to Rule 12b-25(b), the following should be completed. (Check box if appropriate)</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <TR>
    <TD STYLE="border-right: black 1pt solid; padding: 0.25pt 0.4pt 0.25pt 8.25pt; font-size: 10pt; width: 2%"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&#9746;</FONT><FONT STYLE="font-size: 10pt">&nbsp;&nbsp;&nbsp;</FONT></TD>
    <TD STYLE="vertical-align: bottom; padding: 0.25pt; font-size: 10pt; width: 1%">&nbsp;</TD>
    <TD STYLE="vertical-align: top; padding: 0.25pt; font-size: 10pt; width: 1%"><FONT STYLE="font-size: 10pt">(a)</FONT></TD>
    <TD STYLE="vertical-align: bottom; padding: 0.25pt; font-size: 10pt; width: 1%">&nbsp;</TD>
    <TD STYLE="text-align: justify; vertical-align: top; padding: 0.25pt; width: 95%">
    <P STYLE="text-align: justify; font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">The reason described in reasonable detail in Part III of this form
    could not be eliminated without unreasonable effort or expense;</P>

</TD></TR>
  <TR>
    <TD STYLE="border-right: black 1pt solid; padding: 0.25pt 0.4pt 0.25pt 8.25pt; font-size: 10pt">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="padding: 0.25pt">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="padding: 0.25pt">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="border-right: black 1pt solid; padding: 0.25pt 0.4pt 0.25pt 8.25pt; font-size: 10pt">&#9744;<FONT STYLE="font-size: 10pt">&nbsp;&nbsp;&nbsp;</FONT></TD>
    <TD STYLE="vertical-align: bottom; padding: 0.25pt; font-size: 10pt">&nbsp;</TD>
    <TD STYLE="vertical-align: top; padding: 0.25pt; font-size: 10pt"><FONT STYLE="font-size: 10pt">(b)</FONT></TD>
    <TD STYLE="vertical-align: bottom; padding: 0.25pt; font-size: 10pt">&nbsp;</TD>
    <TD STYLE="text-align: justify; vertical-align: top; padding: 0.25pt">
    <P STYLE="text-align: justify; font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">The subject annual report, semi-annual report, transition report on
    Form 10-K, Form 20-F, Form 11-K, Form N-CEN or Form N-CSR, or portion thereof, will be filed on or before the fifteenth calendar day following
    the prescribed due date; or the subject quarterly report or transition report on Form 10-Q or subject distribution report on Form 10-D,
    or portion thereof, will be filed on or before the fifth calendar day following the prescribed due date; and</P>

</TD></TR>
  <TR>
    <TD STYLE="border-right: black 1pt solid; padding: 0.25pt 0.4pt 0.25pt 8.25pt; font-size: 10pt">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="padding: 0.25pt">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="padding: 0.25pt">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="border-right: black 1pt solid; padding: 0.25pt 0.4pt 0.25pt 8.25pt; font-size: 10pt"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&#9744;</FONT></TD>
    <TD STYLE="vertical-align: bottom; padding: 0.25pt; font-size: 10pt">&nbsp;</TD>
    <TD STYLE="vertical-align: top; padding: 0.25pt; font-size: 10pt"><FONT STYLE="font-size: 10pt">(c)</FONT></TD>
    <TD STYLE="vertical-align: bottom; padding: 0.25pt; font-size: 10pt">&nbsp;</TD>
    <TD STYLE="text-align: justify; vertical-align: top; padding: 0.25pt; font-size: 10pt"><FONT STYLE="font-size: 10pt">The accountant&rsquo;s statement or other exhibit required by Rule 12b-25(c) has been attached if applicable.</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>PART III&mdash;NARRATIVE </B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="text-align: justify; font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">State below in reasonable detail the reasons why Forms 10-K, 20-F,
11-K, 10-Q, 10-D, N-CEN, N-CSR, or the transition report or portion thereof, could not be filed within the prescribed time period. (Attach
extra Sheets if Needed)</P>

<P STYLE="text-align: justify; font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="text-align: justify; font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Advent Technologies Holdings, Inc. (the &ldquo;Company&rdquo;) has
determined that it is unable, without unreasonable effort or expense, to file its Annual Report on Form 10-K for the period ended December
31, 2023 (the &ldquo;Annual Report&rdquo;) by the prescribed due date for the reasons described below.</P>

<P STYLE="text-align: justify; font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="text-align: justify; font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">As previously disclosed, the Company&rsquo;s Chief Financial Officer
(&ldquo;CFO&rdquo;) since 2021, Kevin L. Brackman, resigned from all of his positions in January 2024 and his replacement as CFO, Naiem
Hussain, resigned in March 2024. As a result, the Company&rsquo;s ability to file the Annual Report in a timely manner was negatively
impacted, resulting in the Company becoming unable to file its Annual Report by its prescribed due date without unreasonable effort or
expense.</P>

<P STYLE="text-align: justify; font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="text-align: justify; font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">The Company is working diligently to complete the Annual Report as
quickly as possible.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>PART IV&mdash;OTHER INFORMATION </B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <TR>
    <TD STYLE="vertical-align: top; padding: 0.25pt; font-size: 10pt"><FONT STYLE="font-size: 10pt">(1)</FONT></TD>
    <TD COLSPAN="5" STYLE="vertical-align: bottom; padding: 0.25pt; font-size: 10pt"><FONT STYLE="font-size: 10pt">Name and telephone number of person to contact in regard to this notification</FONT></TD></TR>
  <TR>
    <TD STYLE="padding: 0.25pt">&nbsp;</TD>
    <TD STYLE="padding: 0.25pt">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="padding: 0.25pt">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="padding: 0.25pt">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; padding: 0.25pt; width: 5%">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; border-bottom: black 1pt solid; padding: 0.25pt 0.25pt 0.4pt; font-size: 10pt; text-align: center; width: 31%"><FONT STYLE="font-size: 10pt">Vassilios Gregoriou</FONT></TD>
    <TD STYLE="vertical-align: bottom; border-bottom: black 1pt solid; padding: 0.25pt 0.25pt 0.4pt; font-size: 10pt; width: 2%">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; border-bottom: black 1pt solid; padding: 0.25pt 0.25pt 0.4pt; font-size: 10pt; text-align: center; width: 30%"><FONT STYLE="font-size: 10pt">617</FONT></TD>
    <TD STYLE="vertical-align: bottom; border-bottom: black 1pt solid; padding: 0.25pt 0.25pt 0.4pt; font-size: 10pt; width: 2%">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; border-bottom: black 1pt solid; padding: 0.25pt 0.25pt 0.4pt; font-size: 10pt; text-align: center; width: 30%"><FONT STYLE="font-size: 10pt">655-6000</FONT></TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; padding: 0.25pt">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding: 0.25pt; font-size: 10pt; text-align: center"><FONT STYLE="font-size: 10pt"><B>(Name)</B></FONT></TD>
    <TD STYLE="vertical-align: bottom; padding: 0.25pt; font-size: 10pt">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding: 0.25pt; font-size: 10pt; text-align: center"><FONT STYLE="font-size: 10pt"><B>(Area&nbsp;Code)</B></FONT></TD>
    <TD STYLE="vertical-align: bottom; padding: 0.25pt; font-size: 10pt">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding: 0.25pt; font-size: 10pt; text-align: center"><FONT STYLE="font-size: 10pt"><B>(Telephone&nbsp;Number)</B></FONT></TD></TR>
  <TR>
    <TD STYLE="padding: 0.25pt">&nbsp;</TD>
    <TD COLSPAN="5" STYLE="padding: 0.25pt">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; padding: 0.25pt; font-size: 10pt"><FONT STYLE="font-size: 10pt">(2)</FONT></TD>
    <TD COLSPAN="5" STYLE="text-align: justify; vertical-align: bottom; padding: 0.25pt; font-size: 10pt"><FONT STYLE="font-size: 10pt">Have all other
    periodic reports required under Section&nbsp;13 or 15(d) of the Securities Exchange Act of 1934 or Section&nbsp;30 of the Investment
    Company Act of 1940 during the preceding 12 months or for such shorter period that the registrant was required to file such
    report(s) been filed? If answer is no, identify report(s). Yes&nbsp;&nbsp;<FONT STYLE="font-family: Times New Roman, Times, Serif">&#9746;</FONT>&nbsp;&nbsp;&nbsp;&nbsp;No&nbsp;&nbsp;<FONT STYLE="font-family: Times New Roman, Times, Serif">&#9744;</FONT></FONT></TD></TR>
  <TR>
    <TD STYLE="padding: 0.25pt">&nbsp;</TD>
    <TD COLSPAN="5" STYLE="padding: 0.25pt">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; padding: 0.25pt">&nbsp;</TD>
    <TD COLSPAN="5" STYLE="vertical-align: bottom; border-bottom: black 1pt solid; padding: 0.25pt 0.25pt 0.4pt; font-size: 10pt">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="padding: 0.25pt">&nbsp;</TD>
    <TD COLSPAN="5" STYLE="padding: 0.25pt">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; padding: 0.25pt; font-size: 10pt"><FONT STYLE="font-size: 10pt">(3)</FONT></TD>
    <TD COLSPAN="5" STYLE="text-align: justify; vertical-align: bottom; padding: 0.25pt; font-size: 10pt"><FONT STYLE="font-size: 10pt">Is it anticipated
    that any significant change in results of operations from the corresponding period for the last fiscal year will be reflected by the
    earnings statements to be included in the subject report or portion thereof? Yes&nbsp;&nbsp;<FONT STYLE="font-family: Times New Roman, Times, Serif">&#9744;</FONT>&nbsp;&nbsp;&nbsp;&nbsp;No&nbsp;&nbsp;<FONT STYLE="font-family: Times New Roman, Times, Serif">&#9746;</FONT></FONT></TD></TR>
  <TR>
    <TD STYLE="padding: 0.25pt">&nbsp;</TD>
    <TD COLSPAN="5" STYLE="padding: 0.25pt">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; padding: 0.25pt">&nbsp;</TD>
    <TD COLSPAN="5" STYLE="vertical-align: bottom; padding: 0.25pt">
    <P STYLE="text-align: justify; font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">If so, attach an explanation of the anticipated change, both narratively
    and quantitatively, and, if appropriate, state the reasons why a reasonable estimate of the results cannot be made.</P>

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  </TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>



<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B></B></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Advent Technologies Holdings Inc. </B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">(Name of Registrant as Specified in Charter)</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">has caused this notification to be signed on its behalf by the undersigned
hereunto duly authorized.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <TR>
    <TD STYLE="vertical-align: top; padding: 0.25pt; font-size: 10pt; width: 4%"><FONT STYLE="font-size: 10pt">Date:&nbsp;</FONT></TD>
    <TD STYLE="vertical-align: bottom; padding: 0.25pt; width: 45%">
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; border-bottom: black 0.75pt solid">April 1, 2024</P></TD>
    <TD STYLE="vertical-align: bottom; padding: 0.25pt; font-size: 10pt; width: 2%">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding: 0.25pt; font-size: 10pt; width: 4%"><FONT STYLE="font-size: 10pt">By:&nbsp;</FONT></TD>
    <TD STYLE="vertical-align: bottom; padding: 0.25pt; width: 45%">
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; border-bottom: black 0.75pt solid">/s/ Vassilios Gregoriou</P></TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; padding: 0.25pt">&nbsp;</TD>
    <TD STYLE="vertical-align: top; padding: 0.25pt">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding: 0.25pt; font-size: 10pt">&nbsp;</TD>
    <TD STYLE="vertical-align: top; padding: 0.25pt">&nbsp;</TD>
    <TD STYLE="vertical-align: top; padding: 0.25pt">
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Vassilios Gregoriou</P>
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><I>Chief Executive Officer</I></P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

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