ADNHOTCMiscellaneous Electrical Machinery, Equipment & SuppliesFiscal year ends December 31
ADVENT TECHNOLOGIES HOLDINGS, INC.
Financials through Q4 FY2024, quarter ended Dec 31, 2024Last filing: 10-Q on Nov 17, 2025
$0.00+0.00 (0.00%)
Close on Oct 19, 2026
- Market cap
- –
- P/E (TTM)
- –
- Dividend yield
- –
Ownership
Institutional holdings as of Mar 31, 2026, from 13F filings
Held by institutions
0.0%
0M of 4M shares
Institutional holders
0
0 new, 1 sold out
Net institutional buying
-0M
In Q1 2026
Insider trades, 12 months
0 buys · 0 sales
Open-market trades only
Shares held by institutions
Top institutional holders
13F holdings as of Dec 31, 2025
| Holder | Shares | % of ADNH | Value | Change | % of portfolio |
|---|---|---|---|---|---|
| XTX Topco Ltd | 16,835 | 0.44% | $7.07K | New | 0.00% |
Institutional buying and selling by quarter
Positions opened, added to, reduced and closed by 13F filers
| Quarter | Holders | Shares held | % of shares | New / added | Reduced / closed | Shares bought | Shares sold |
|---|---|---|---|---|---|---|---|
| Q1 2026 | 0 | 0M | 0.0% | 0 / 0 | 0 / 1 | 0M | 0M |
| Q4 2025 | 1 | 0M | 0.4% | 1 / 0 | 0 / 18 | 0M | 0M |
| Q3 2025 | 18 | 0M | 4.9% | 5 / 3 | 2 / 4 | 0M | 0M |
| Q2 2025 | 17 | 0M | 2.8% | 6 / 4 | 2 / 1 | 0M | 0M |
| Q1 2025 | 12 | 0M | 2.1% | 1 / 2 | 3 / 2 | 0M | 0M |
| Q4 2024 | 13 | 0M | 2.7% | 3 / 3 | 3 / 3 | 0M | 0M |
| Q3 2024 | 13 | 0M | 1.6% | 3 / 4 | 0 / 4 | 0M | 0M |
| Q2 2024 | 15 | 0M | 1.7% | 15 / 0 | 0 / 0 | 0M | 0M |
Officers, directors and major owners
People who filed Forms 3, 4 or 5 in the last two years
| Name | Role | Shares owned | % of shares | Latest filing |
|---|---|---|---|---|
| Gary L. Herman | Chief Executive Officer, Director | – | – | Mar 11, 2025 |
| Avtar Dhaliwal | Director | – | – | Apr 2, 2025 |
| Seth M. Lukash | Director | – | – | Mar 11, 2025 |
| Marc Seelenfreund | Director | – | – | Mar 11, 2025 |
| Joseph Patrick Celia | Director | – | – | Mar 11, 2025 |
| Robert William Schwartz | Director | – | – | Mar 11, 2025 |
Insider trades
Common stock transactions reported on Form 4, newest first
| Insider | Date | Transaction | Shares | Price | Value | Shares after |
|---|---|---|---|---|---|---|
| Naiem Hussain Chief Financial Officer | Feb 15, 2024 | Award | +166,779 | – | – | 251,779 |
| Vassilios Gregoriou CEO, Chair, Director, 10% owner | Sep 6, 2023 | Sale | −14,157 | $0.53 | $7.50K | 6,367,669 |
| Kevin L. Brackman CFO | Sep 6, 2023 | Sale | −27,771 | $0.53 | $14.72K | 176,477 |
| Vassilios Gregoriou CEO, Chair, Director, 10% owner | Feb 8, 2023 | Sale | −22,696 | $1.92 | $43.58K | 6,381,826 |
| James F. Coffey COO, GC | Feb 8, 2023 | Sale | −9,136 | $1.92 | $17.54K | 877,396 |
| Castro Emory Sayre De CTO, Director | Feb 8, 2023 | Sale | −9,248 | $1.96 | $18.13K | 2,413,503 |
| Vassilios Gregoriou CEO, Chair, Director, 10% owner | Feb 8, 2023 | Sale | −22,696 | $1.92 | $43.58K | 6,486,948 |
| Vassilios Gregoriou CEO, Chair, Director, 10% owner | Feb 7, 2023 | Sale | −34,338 | $1.96 | $67.30K | 6,404,522 |
| James F. Coffey COO, GC | Feb 7, 2023 | Sale | −13,823 | $1.96 | $27.09K | 886,532 |
| Castro Emory Sayre De CTO, Director | Feb 7, 2023 | Sale | −13,992 | $1.96 | $27.42K | 2,422,751 |
| Vassilios Gregoriou CEO, Chair, Director, 10% owner | Feb 7, 2023 | Sale | −34,338 | $1.96 | $67.30K | 6,509,644 |
| Vassilios Gregoriou CEO, Chair, Director, 10% owner | Feb 6, 2023 | Sale | −18,642 | $2.00 | $37.28K | 6,438,860 |
| James F. Coffey COO, GC | Feb 6, 2023 | Sale | −7,505 | $2.00 | $15.01K | 900,355 |
| Castro Emory Sayre De CTO, Director | Feb 6, 2023 | Sale | −7,596 | $2.00 | $15.19K | 2,436,743 |
| Vassilios Gregoriou CEO, Chair, Director, 10% owner | Feb 6, 2023 | Sale | −18,642 | $2.00 | $37.28K | 6,543,982 |
| James F. Coffey COO, GC | Feb 4, 2023 | Tax withholding | −29,046 | $2.04 | $59.25K | 878,814 |
| Castro Emory Sayre De CTO, Director | Feb 4, 2023 | Tax withholding | −29,401 | $2.04 | $59.98K | 2,414,938 |
| Vassilios Gregoriou CEO, Chair, Director, 10% owner | Feb 4, 2023 | Tax withholding | −72,161 | $2.04 | $147.21K | 6,490,463 |
| Panoraia Gourdoupi Director | Jan 12, 2023 | Award | +4,688 | – | – | 379,485 |
| Panoraia Gourdoupi Director | Aug 31, 2022 | Tax withholding | −4,688 | – | – | 374,797 |
| Kevin L. Brackman CFO | Aug 24, 2022 | Tax withholding | −26,281 | $2.84 | $74.64K | 204,248 |
| Vassilios Gregoriou CEO, Chair, Director, 10% owner | Jul 12, 2022 | Award | +175,000 | – | – | 6,562,624 |
| Lawrence Epstein Director | Jun 15, 2022 | Award | +64,516 | – | – | 67,616 |
| Wayne Threatt Director | Jun 15, 2022 | Award | +64,516 | – | – | 64,516 |
| Anggelos Skutaris Director | Jun 15, 2022 | Award | +64,516 | – | – | 83,820 |
| James F. Coffey COO and General Counsel | Feb 4, 2022 | Tax withholding | −28,639 | $4.04 | $115.70K | 907,860 |
| Vassilios Gregoriou CEO, Chair, Director | Feb 4, 2022 | Tax withholding | −105,122 | $4.04 | $424.69K | 6,457,502 |
| Castro Emory Sayre De Chief Technology Officer, Director | Feb 4, 2022 | Tax withholding | −26,454 | $4.04 | $106.87K | 2,444,339 |
| Kevin L. Brackman Chief Financial Officer | Aug 24, 2021 | Award | +230,529 | – | – | 230,529 |
| Christos Kaskavelis CMO | Jun 11, 2021 | Award | +345,794 | – | – | 2,247,502 |
| Vassilios Gregoriou Chairman and CEO, Director, 10% owner | Jun 11, 2021 | Award | +922,118 | – | – | 6,387,624 |
| Anggelos Skutaris Director | Jun 11, 2021 | Award | +9,652 | – | – | 9,652 |
| Anggelos Skutaris Director | Jun 11, 2021 | Award | +9,652 | – | – | 19,304 |
| Vassilios Gregoriou Chairman and CEO, Director | Jun 11, 2021 | Award | +922,118 | – | – | 6,387,624 |
| Katherine E. Fleming Director | Jun 11, 2021 | Award | +9,652 | – | – | 19,304 |
| Katherine E. Fleming Director | Jun 11, 2021 | Award | +9,652 | – | – | 9,652 |
| John Hunter William President and CFO, Director | Jun 11, 2021 | Award | +345,794 | – | – | 445,794 |
| Christos Kaskavelis Chief Marketing Officer | Jun 11, 2021 | Award | +345,794 | – | – | 4,049,907 |
| Katrina Fritz Director | Jun 11, 2021 | Award | +9,652 | – | – | 9,652 |
| Katrina Fritz Director | Jun 11, 2021 | Award | +9,652 | – | – | 19,304 |
| Lawrence M. Clark Jr Director | Jun 11, 2021 | Award | +9,652 | – | – | 44,652 |
| Lawrence M. Clark Jr Director | Jun 11, 2021 | Award | +9,652 | – | – | 54,304 |
| Castro Emory Sayre De Chief Technology Officer, Director | Jun 11, 2021 | Award | +345,794 | – | – | 2,470,793 |
| James F. Coffey COO and General Counsel | Jun 11, 2021 | Award | +345,794 | – | – | 936,499 |
| Christos Kaskavelis Chief Marketing Officer | Feb 4, 2021 | Award | +1,802,405 | – | – | 3,704,113 |
| Christos Kaskavelis Chief Marketing Officer | Feb 4, 2021 | Award | +1,901,708 | – | – | 1,901,708 |
| James F. Coffey COO and General Counsel | Feb 4, 2021 | Award | +590,705 | – | – | 590,705 |
| Castro Emory Sayre De Chief Technology Officer, Director | Feb 4, 2021 | Award | +2,124,999 | – | – | 2,124,999 |
| John Hunter William President and CFO, Director | Feb 4, 2021 | Award | +100,000 | – | – | 100,000 |
| Vassilios Gregoriou Chairman and CEO, Director, 10% owner | Feb 4, 2021 | Award | +5,465,506 | – | – | 5,465,506 |
| Lawrence M. Clark Jr Director | Feb 4, 2021 | Award | +35,000 | – | – | 35,000 |
| Adage Capital Advisors, L.L.C. 10% owner | Dec 3, 2020 | Sale | −268,465 | $12.18 | $3.27M | 781,535 |
| Adage Capital Advisors, L.L.C. 10% owner | Dec 2, 2020 | Sale | −300,000 | $11.67 | $3.50M | 1,050,000 |
| Adage Capital Advisors, L.L.C. 10% owner | Dec 1, 2020 | Sale | −450,000 | $12.26 | $5.52M | 1,350,000 |
| Paul J. Glazer 10% owner | Dec 1, 2020 | Sale | −200,000 | $12.37 | $2.47M | 785,100 |
| Paul J. Glazer 10% owner | Nov 30, 2020 | Sale | −428,713 | $12.91 | $5.53M | 985,100 |
| Bay Capital Management LP Hudson 10% owner | Nov 27, 2020 | Sale | −100,000 | $11.27 | $1.13M | 900,000 |
| Paul J. Glazer 10% owner | Nov 25, 2020 | Sale | −14,500 | $10.48 | $151.96K | 1,413,813 |
| Paul J. Glazer 10% owner | Nov 25, 2020 | Sale | −153,501 | $10.51 | $1.61M | 1,428,313 |
| Paul J. Glazer 10% owner | Nov 24, 2020 | Sale | −21,572 | $10.54 | $227.37K | 1,581,814 |
Awards, option exercises, tax withholding and gifts are shown alongside open-market buys and sales. Each name links to the filing on SEC EDGAR.