Addex Therapeutics Ltd. SEC filings ADXN
Addex Therapeutics Ltd. has 279 filings in SEC EDGAR's recent list, going back to Sep 24, 2019. Its latest annual report, Form 20-F, was filed on May 15, 2026 for the period ended Dec 31, 2025. The most recent current report (Form 6-K) was filed on Oct 29, 2026. The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 4 | Insider transaction | Sep 4, 2026 | Sep 2, 2026 |
| 4 | Insider transaction | Sep 4, 2026 | Sep 2, 2026 |
| 4 | Insider transaction | Sep 4, 2026 | Sep 2, 2026 |
| 4 | Insider transaction | Sep 4, 2026 | Sep 2, 2026 |
| 4 | Insider transaction | Sep 4, 2026 | Sep 2, 2026 |
| 4 | Insider transaction | Sep 4, 2026 | Sep 2, 2026 |
| 4 | Insider transaction | Sep 4, 2026 | Sep 2, 2026 |
| 4 | Insider transaction | Sep 4, 2026 | Sep 2, 2026 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Sep 4, 2026 | — |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Aug 27, 2026 | — |
| 3 | Initial insider ownership | Mar 25, 2026 | Mar 18, 2026 |
| 3 | Initial insider ownership | Mar 25, 2026 | Mar 18, 2026 |
| 3 | Initial insider ownership | Mar 25, 2026 | Mar 18, 2026 |
| 3 | Initial insider ownership | Mar 25, 2026 | Mar 18, 2026 |
| 3 | Initial insider ownership | Mar 25, 2026 | Mar 18, 2026 |
| 3 | Initial insider ownership | Mar 18, 2026 | Mar 18, 2026 |
| 3 | Initial insider ownership | Mar 18, 2026 | Mar 18, 2026 |
| 3 | Initial insider ownership | Mar 18, 2026 | Mar 18, 2026 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Jun 23, 2025 | — |
| SC 13D/A | Amended ownership over 5% (active) | Aug 14, 2024 | — |
| SC 13D/A | Amended ownership over 5% (active) | Aug 5, 2024 | — |
| SC 13D/A | Amended ownership over 5% (active) | Dec 8, 2023 | — |
| SC 13D/A | Amended ownership over 5% (active) | Nov 29, 2023 | — |
| SC 13D/A | Amended ownership over 5% (active) | Apr 10, 2023 | — |
| SC 13D/A | Amended ownership over 5% (active) | Apr 5, 2023 | — |
| SC 13D/A | Amended ownership over 5% (active) | Mar 31, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 16, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 8, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 6, 2023 | — |
| SC 13D/A | Amended ownership over 5% (active) | Nov 28, 2022 | — |
| SC 13D/A | Amended ownership over 5% (active) | Nov 23, 2022 | — |
| SC 13D/A | Amended ownership over 5% (active) | Nov 9, 2022 | — |
| SC 13D/A | Amended ownership over 5% (active) | Aug 23, 2022 | — |
| SC 13D/A | Amended ownership over 5% (active) | Aug 5, 2022 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 18, 2022 | — |
| SC 13G | Ownership over 5% (passive) | Feb 15, 2022 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2022 | — |
| SC 13G | Ownership over 5% (passive) | Feb 14, 2022 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2022 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 11, 2022 | — |
| SC 13D/A | Amended ownership over 5% (active) | Jan 10, 2022 | — |
| SC 13D/A | Amended ownership over 5% (active) | Sep 8, 2021 | — |
| SC 13G | Ownership over 5% (passive) | Feb 16, 2021 | — |
| SC 13G | Ownership over 5% (passive) | Feb 12, 2021 | — |
| SC 13G | Ownership over 5% (passive) | Feb 10, 2021 | — |
| SC 13D | Ownership over 5% (active) | Jan 22, 2021 | — |
| SC 13D | Ownership over 5% (active) | Nov 3, 2020 | — |
Showing 49 filings. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- Pharmaceutical Preparations (SIC 2834)
- Listed as
- ADXN (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- Switzerland
- Headquarters
- Geneva, Switzerland
- SEC filer status
- Non-accelerated filer
- SEC CIK
- 1574232
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.