<div style="margin-bottom: 10px;">
                      <a href=https://www.sec.gov/Archives/edgar/data/1744494/000182912623001969/adventtech_8k.htm>Download 8-K Special Filing Report</a>
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                    <div>
                      <a href=https://www.sec.gov/Archives/edgar/data/1744494/000182912623001969/0001829126-23-001969-index.htm>Original filing index</a>
                    </div>

Form 8-K - Current report - Item 8.01 Item 9.01

Advent Technologies Holdings Inc - Class A

Announcement: ADN 8-K Special Filing

<div style="margin-bottom: 10px;">
                      <a href=https://www.sec.gov/Archives/edgar/data/914208/000091420823000150/SEC13G_Filing.htm>Download SC 13G/A Special Filing</a>
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                      <a href=https://www.sec.gov/Archives/edgar/data/1744494/000091420823000150/0000914208-23-000150-index.htm>Original filing index</a>
                    </div>

Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals: [Amend]

Announcement: ADN SC 13G/A Statement of acquisition of beneficial ownership by individuals - amendment

<div style="margin-bottom: 10px;">
                      <a href=https://www.sec.gov/Archives/edgar/data/1389277/000138927723000001/Advent_Technol_Hldngs_A2.txt>Download SC 13G/A Special Filing</a>
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                      <a href=https://www.sec.gov/Archives/edgar/data/1744494/000138927723000001/0001389277-23-000001-index.htm>Original filing index</a>
                    </div>

<div style="margin-bottom: 10px;">
                          <a href=https://www.sec.gov/Archives/edgar/data/1744494/000182912622019214/adventtech_10q.htm>Download 10-Q Quarterly Report</a>
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                        <div>
                          <a href=https://www.sec.gov/Archives/edgar/data/1744494/000182912622019214/0001829126-22-019214-index.htm>Original filing index</a>
                        </div>

Form 10-Q - Quarterly report [Sections 13 or 15(d)]

Announcement: ADN 10-Q Quarterly Report

<div style="margin-bottom: 10px;">
                          <a href=https://www.sec.gov/Archives/edgar/data/1744494/000182912622019192/adventtech_8k.htm>Download 8-K Special Filing Report</a>
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                          <a href=https://www.sec.gov/Archives/edgar/data/1744494/000182912622019192/0001829126-22-019192-index.htm>Original filing index</a>
                        </div>

Form 8-K - Current report - Item 2.02 Item 7.01 Item 9.01

<div style="margin-bottom: 10px;">
                          <a href=https://www.sec.gov/Archives/edgar/data/1744494/000182912622018873/adventtech_8k.htm>Download 8-K Special Filing Report</a>
                        </div>
                        <div>
                          <a href=https://www.sec.gov/Archives/edgar/data/1744494/000182912622018873/0001829126-22-018873-index.htm>Original filing index</a>
                        </div>

Form 8-K - Current report - Item 5.02 Item 7.01 Item 9.01