ADVENT TECHNOLOGIES HOLDINGS, INC. — DEFA14A Filings
9 DEFA14A filings on record
This page lists all DEFA14A filings submitted to the SEC by ADVENT TECHNOLOGIES HOLDINGS, INC. (ADNH), sorted by most recent first. Each row links to the full filing on EdgarLookup. ADVENT TECHNOLOGIES HOLDINGS, INC. has filed 9 DEFA14A documents with the SEC since 2018. To view all SEC filings by ADVENT TECHNOLOGIES HOLDINGS, INC., see the full filings list.
All
10-K
10-K/A
10-Q
25-NSE
3
4
4/A
424B3
424B4
424B5
425
8-A12B
8-K
8-K/A
CERT
CORRESP
DEF 14A
DEFA14A
DRS
DRS/A
DRSLTR
EFFECT
NT 10-K
NT 10-Q
POS AM
PRE 14A
RW
S-1
S-1/A
S-3
S-4
S-4/A
S-8
SC 13D
SC 13G
SC 13G/A
UPLOAD
| Form | Description | Accession Number | Filed | Period |
|---|---|---|---|---|
| DEFA14A | DEFA14A | 0001829126-23-002904 | Apr 25, 2023 | — |
| DEFA14A | DEFA14A | 0001140361-22-017171 | May 2, 2022 | — |
| DEFA14A | DEFA14A | 0001140361-22-015908 | Apr 26, 2022 | — |
| DEFA14A | DEFA14A | 0001140361-21-017688 | May 17, 2021 | — |
| DEFA14A | DEFA14A | 0001140361-21-017678 | May 17, 2021 | — |
| DEFA14A | DEFA14A | 0001140361-20-022892 | Oct 13, 2020 | — |
| DEFA14A | DEFA 14A | 0001140361-20-021175 | Sep 22, 2020 | — |
| DEFA14A | DEFA14A | 0001140361-20-011319 | May 11, 2020 | — |
| DEFA14A | DEFA14A | 0001140361-20-011132 | May 8, 2020 | — |