Company · CIK 1744494 # ADVENT TECHNOLOGIES HOLDINGS, INC. | CIK | [1744494](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0001744494) (SEC EDGAR) | | --- | --- | | Industry (SIC) | 3690 — Miscellaneous Electrical Machinery, Equipment & Supplies | | Incorporated in | DE | | Business address | MA | | Listed | ADNH | | First annual or quarterly report | 2019-04-01 | ## Offerings 5 registrations | Registration | Label and status | First filed | Last event | Filings | | --- | --- | --- | --- | --- | | 333-289686 | Registered company Effective | 2025-08-18 | 2025-08-27 | 2 | | 333-271389 | Shelf Effective | 2023-04-21 | 2023-12-28 | 6 | | 333-253114 | Registered company Effective | 2021-02-16 | 2022-12-22 | 5 | | 333-264421 | Registered company Effective | 2022-04-21 | 2022-04-28 | 2 | | 333-227994 | IPO Final prospectus | 2018-10-25 | 2018-11-16 | 4 | ## Filings 22 | Filed | Filing | Registration | Accession | | --- | --- | --- | --- | | 2025-08-27 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1744494/999999999525002763/9999999995-25-002763-index.htm) Declared effective | 333-289686 | 9999999995-25-002763 | | 2025-08-18 | [S-1](https://www.sec.gov/Archives/edgar/data/1744494/000182912625006432/0001829126-25-006432-index.htm) Registration filed | 333-289686 | 0001829126-25-006432 | | 2023-12-28 | [424B5](https://www.sec.gov/Archives/edgar/data/1744494/000182912623008276/0001829126-23-008276-index.htm) Shelf takedown | 333-271389 | 0001829126-23-008276 | | 2023-12-27 | [424B5](https://www.sec.gov/Archives/edgar/data/1744494/000182912623008217/0001829126-23-008217-index.htm) Shelf takedown | 333-271389 | 0001829126-23-008217 | | 2023-06-02 | [424B5](https://www.sec.gov/Archives/edgar/data/1744494/000182912623003885/0001829126-23-003885-index.htm) Shelf takedown | 333-271389 | 0001829126-23-003885 | | 2023-05-02 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1744494/999999999523001239/9999999995-23-001239-index.htm) Declared effective | 333-271389 | 9999999995-23-001239 | | 2023-05-02 | [424B5](https://www.sec.gov/Archives/edgar/data/1744494/000182912623003064/0001829126-23-003064-index.htm) Shelf takedown | 333-271389 | 0001829126-23-003064 | | 2023-04-21 | [S-3](https://www.sec.gov/Archives/edgar/data/1744494/000182912623002884/0001829126-23-002884-index.htm) Shelf registered | 333-271389 | 0001829126-23-002884 | | 2022-12-22 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1744494/999999999522003612/9999999995-22-003612-index.htm) Declared effective | 333-253114 | 9999999995-22-003612 | | 2022-04-28 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1744494/999999999522001150/9999999995-22-001150-index.htm) Declared effective | 333-264421 | 9999999995-22-001150 | | 2022-04-21 | [S-1](https://www.sec.gov/Archives/edgar/data/1744494/000114036122015410/0001140361-22-015410-index.htm) Registration filed | 333-264421 | 0001140361-22-015410 | | 2022-04-19 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1744494/999999999522001015/9999999995-22-001015-index.htm) Declared effective | 333-253114 | 9999999995-22-001015 | | 2021-03-30 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1744494/999999999521001205/9999999995-21-001205-index.htm) Declared effective | 333-253114 | 9999999995-21-001205 | | 2021-03-26 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1744494/000114036121010325/0001140361-21-010325-index.htm) Amendment | 333-253114 | 0001140361-21-010325 | | 2021-02-16 | [S-1](https://www.sec.gov/Archives/edgar/data/1744494/000114036121004824/0001140361-21-004824-index.htm) Registration filed | 333-253114 | 0001140361-21-004824 | | 2021-01-19 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1744494/999999999521000188/9999999995-21-000188-index.htm) Declared effective | 333-250946 | 9999999995-21-000188 | | 2020-11-24 | [RW](https://www.sec.gov/Archives/edgar/data/1744494/000114036120026457/0001140361-20-026457-index.htm) Withdrawn | 333-249988 | 0001140361-20-026457 | | 2018-11-16 | [424B4](https://www.sec.gov/Archives/edgar/data/1744494/000114036118043271/0001140361-18-043271-index.htm) Final prospectus | 333-227994 | 0001140361-18-043271 | | 2018-11-15 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1744494/999999999518002901/9999999995-18-002901-index.htm) Declared effective | 333-227994 | 9999999995-18-002901 | | 2018-11-09 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1744494/000114036118042791/0001140361-18-042791-index.htm) Amendment | 333-227994 | 0001140361-18-042791 | | 2018-10-25 | [S-1](https://www.sec.gov/Archives/edgar/data/1744494/000114036118041301/0001140361-18-041301-index.htm) Registration filed | 333-227994 | 0001140361-18-041301 | | 2018-07-20 | [DRS](https://www.sec.gov/Archives/edgar/data/1744494/000114036118033040/0001140361-18-033040-index.htm) Draft made public | 377-02183 | 0001140361-18-033040 | [All filings of this company](https://equitycapital.markets/filings?cik=1744494) · [CSV](https://equitycapital.markets/filings.csv?cik=1744494) --- Source page: https://equitycapital.markets/company/1744494 · Data: U.S. SEC EDGAR · CC BY 4.0