Advent Technologies Holdings, Inc.
Advent Technologies Holdings, Inc. (ADNWW) Insider Trading
Form 4 buy vs sell counts, ratio, and sentiment — switch this quarter or last 12 months; chart and transactions below.
SEC EDGAR · FMP · ADNWW · as of Jun 8, 2026
Activity summary
Buy transactions
0
P-Purchase only
Sell transactions
14
12 Months
Buy/Sell ratio
0.00
Buy/Sell (by trades)
Overall sentiment
Advent Technologies Holdings, Inc. insiders have been primarily selling shares over the past 12 Months. Selling activity is often driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment toward the company.
▸ Source: SEC EDGAR · Form 3 & 4 · via Financial Modeling Prep · Buy = P-Purchase only · Sell = S-Sale only
As of Jun 8, 2026
ADNWW insider buying and selling by quarter
ADNWW insider selling · ADNWW insider buying stocks · quarterly insider activity
Mobile shows last 4Q · Desktop shows full 8Q
▸ Source: SEC EDGAR · Form 3 & 4 · via Financial Modeling Prep · last 8 quarters
As of Jun 8, 2026
Recent insider transactions
ADNWW executive sell shares · ADNWW board member insider trading · ADNWW insider trading SEC filing
Scroll horizontally to see all columns
| Date | Insider | Type | Shares | Value | Filing |
|---|---|---|---|---|---|
| Feb 15, 2024 | Hussain Naiem CFO | Award | 166,779 | — | Form 4 |
| Sep 6, 2023 | Gregoriou Vassilios CEO, Chair · Director | Sale | 14,157 | $8K | Form 4 |
| Sep 6, 2023 | Brackman Kevin L. CFO | Sale | 27,771 | $15K | Form 4 |
| Jan 12, 2023 | GOURDOUPI PANORAIA Director | Award | 4,688 | — | Form 4 |
| Feb 4, 2023 | Gregoriou Vassilios CEO, Chair · Director | Other | 72,161 | $147K | Form 4 |
| Feb 4, 2023 | Coffey James F. COO, GC | Other | 29,046 | $59K | Form 4 |
| Feb 4, 2023 | De Castro Emory Sayre CTO · Director | Other | 29,401 | $60K | Form 4 |
| Aug 31, 2022 | GOURDOUPI PANORAIA Director | Other | 4,688 | — | Form 4 |
| Feb 4, 2022 | Gregoriou Vassilios CEO, Chair · Director | Other | 105,122 | $425K | Form 4 |
| Aug 24, 2022 | Brackman Kevin L. CFO | Other | 26,281 | $75K | Form 4 |
| Feb 4, 2022 | Coffey James F. COO and General Counsel | Other | 28,639 | $116K | Form 4 |
| Feb 4, 2022 | De Castro Emory Sayre CTO · Director | Other | 26,454 | $107K | Form 4 |
| Jul 12, 2022 | Gregoriou Vassilios CEO, Chair | Award | 175,000 | — | Form 4 |
| Jun 15, 2022 | THREATT WAYNE Director | Award | 64,516 | — | Form 4 |
| Jun 15, 2022 | Skutaris Anggelos Director | Award | 64,516 | — | Form 4 |
| Jun 15, 2022 | EPSTEIN LAWRENCE Director | Award | 64,516 | — | Form 4 |
| Aug 24, 2021 | Brackman Kevin L. CFO | Award | 230,529 | — | Form 4 |
| Jun 11, 2021 | William John Hunter President and CFO · Director | Award | 345,794 | — | Form 4 |
| Jun 11, 2021 | CLARK LAWRENCE M JR Director | Award | 9,652 | — | Form 4 |
| Jun 11, 2021 | CLARK LAWRENCE M JR Director | Award | 9,652 | — | Form 4 |
| Jun 11, 2021 | Coffey James F. COO and General Counsel | Award | 345,794 | — | Form 4 |
| Jun 11, 2021 | Fritz Katrina Director | Award | 9,652 | — | Form 4 |
| Jun 11, 2021 | Fritz Katrina Director | Award | 9,652 | — | Form 4 |
| Jun 11, 2021 | De Castro Emory Sayre CTO · Director | Award | 345,794 | — | Form 4 |
| Jun 11, 2021 | Kaskavelis Christos Chief Marketing Officer | Award | 345,794 | — | Form 4 |
Gregoriou Vassilios
CEO, Chair · Director
Date
Sep 6
Shares
14,157
Price
$0.53
Value
$8K
Gregoriou Vassilios
CEO, Chair · Director
Date
Feb 4
Shares
72,161
Price
$2.04
Value
$147K
De Castro Emory Sayre
CTO · Director
Date
Feb 4
Shares
29,401
Price
$2.04
Value
$60K
Gregoriou Vassilios
CEO, Chair · Director
Date
Feb 4
Shares
105,122
Price
$4.04
Value
$425K
Coffey James F.
COO and General Counsel
Date
Feb 4
Shares
28,639
Price
$4.04
Value
$116K
De Castro Emory Sayre
CTO · Director
Date
Feb 4
Shares
26,454
Price
$4.04
Value
$107K
William John Hunter
President and CFO · Director
Date
Jun 11
Shares
345,794
Price
—
Value
—
Coffey James F.
COO and General Counsel
Date
Jun 11
Shares
345,794
Price
—
Value
—
Kaskavelis Christos
Chief Marketing Officer
Date
Jun 11
Shares
345,794
Price
—
Value
—
⚡ = value ≥ $1M · Award/Option price shows — · formType=4 · securityName=Common Stock · url → sec.gov/Archives/edgar
▸ Source: SEC EDGAR · Form 4 filings · ⚡ = value ≥ $1M · Award/Option price shows —
About ADNWW insider trading
ADNWW insider trades
Advent Technologies Holdings, Inc. (ADNWW) insider trading data is sourced from SEC Form 4 filings submitted by corporate insiders, including ADNWW. Over the past 12 months, 0 insiders have filed transactions with the SEC. ADNWW insiders have been primarily selling, which may reflect pre-scheduled Rule 10b5-1 plan executions.
For Advent Technologies Holdings, Inc.'s institutional ownership breakdown and insider ownership percentage, see the Ownership tab → Ownership tab →
Frequently asked questions
ADNWW insider trading · 5 questionsThe insiders of Advent Technologies Holdings, Inc. (ADNWW) include executives and directors such as ADNWW, among others. Over the past 12 months, 0 insiders have filed Form 4 transactions with the SEC. Insider transactions are required to be reported within 2 business days of the trade date.
▸ Source: FMP /stable/insider-trading/search · SEC EDGAR Form 3 & 4 · acquisitionOrDisposition A=Buy, D=Sell · RSU vesting (M-Exempt) excluded from sentiment bar · As of Jun 8, 2026