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 |
|---|---|---|---|
| 6-K | Current report (foreign issuer) | Oct 29, 2026 | Oct 29, 2026 |
| 6-K | Current report (foreign issuer) | Oct 8, 2026 | Oct 8, 2026 |
| 6-K | Current report (foreign issuer) | Oct 2, 2026 | Oct 2, 2026 |
| 6-K | Current report (foreign issuer) | Sep 28, 2026 | Jun 30, 2026 |
| 6-K | Current report (foreign issuer) | Sep 25, 2026 | Sep 25, 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 |
| 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 | — |
| 6-K | Current report (foreign issuer) | Aug 26, 2026 | Aug 26, 2026 |
| 6-K | Current report (foreign issuer) | Jul 8, 2026 | Jul 8, 2026 |
| 6-K | Current report (foreign issuer) | Jun 30, 2026 | Jun 30, 2026 |
| 6-K | Current report (foreign issuer) | Jun 25, 2026 | Jun 25, 2026 |
| 6-K | Current report (foreign issuer) | Jun 5, 2026 | Jun 5, 2026 |
| 20-F | Annual report (foreign issuer) | May 15, 2026 | Dec 31, 2025 |
| NT 20-F | Filing | Apr 30, 2026 | Dec 31, 2025 |
| 6-K | Current report (foreign issuer) | Apr 30, 2026 | Apr 30, 2026 |
| 6-K | Current report (foreign issuer) | Apr 29, 2026 | Apr 29, 2026 |
| 6-K | Current report (foreign issuer) | Apr 23, 2026 | Apr 23, 2026 |
| 6-K | Current report (foreign issuer) | Apr 21, 2026 | Apr 21, 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 |
| 6-K | Current report (foreign issuer) | Feb 3, 2026 | Feb 3, 2026 |
| 6-K | Current report (foreign issuer) | Jan 7, 2026 | Jan 7, 2026 |
| 6-K | Current report (foreign issuer) | Dec 10, 2025 | Dec 10, 2025 |
| 424B5 | Prospectus supplement | Dec 10, 2025 | — |
| EFFECT | Filing | Dec 5, 2025 | — |
| 6-K | Current report (foreign issuer) | Dec 4, 2025 | Dec 4, 2025 |
| CORRESP | Letter to the SEC | Dec 3, 2025 | — |
| F-3 | Shelf registration (foreign issuer) | Nov 19, 2025 | — |
| 6-K | Current report (foreign issuer) | Oct 29, 2025 | Oct 29, 2025 |
| 6-K | Current report (foreign issuer) | Sep 30, 2025 | Jun 30, 2025 |
| 6-K | Current report (foreign issuer) | Sep 23, 2025 | Sep 23, 2025 |
| 6-K | Current report (foreign issuer) | Jun 30, 2025 | Jun 30, 2025 |
| 6-K | Current report (foreign issuer) | Jun 25, 2025 | Jun 25, 2025 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Jun 23, 2025 | — |
| 6-K | Current report (foreign issuer) | Jun 20, 2025 | Jun 20, 2025 |
| 6-K | Current report (foreign issuer) | Jun 6, 2025 | Jun 6, 2025 |
| 20-F | Annual report (foreign issuer) | May 15, 2025 | Dec 31, 2024 |
| 6-K | Current report (foreign issuer) | May 12, 2025 | May 12, 2025 |
| NT 20-F | Filing | Apr 30, 2025 | Dec 31, 2024 |
| 6-K | Current report (foreign issuer) | Apr 30, 2025 | Apr 30, 2025 |
| 6-K | Current report (foreign issuer) | Apr 25, 2025 | Apr 25, 2025 |
| 6-K | Current report (foreign issuer) | Apr 17, 2025 | Apr 17, 2025 |
| 6-K | Current report (foreign issuer) | Nov 22, 2024 | Nov 22, 2024 |
| 6-K | Current report (foreign issuer) | Nov 12, 2024 | Nov 11, 2024 |
| 6-K | Current report (foreign issuer) | Sep 30, 2024 | Sep 30, 2024 |
| 6-K | Current report (foreign issuer) | Sep 19, 2024 | Sep 19, 2024 |
| 6-K | Current report (foreign issuer) | Aug 27, 2024 | Aug 27, 2024 |
| SC 13D/A | Amended ownership over 5% (active) | Aug 14, 2024 | — |
| SC 13D/A | Amended ownership over 5% (active) | Aug 5, 2024 | — |
| 6-K | Current report (foreign issuer) | Jul 22, 2024 | Jul 22, 2024 |
| 6-K | Current report (foreign issuer) | Jul 15, 2024 | Jul 15, 2024 |
| 6-K | Current report (foreign issuer) | Jul 1, 2024 | Jul 1, 2024 |
| 6-K | Current report (foreign issuer) | Jun 6, 2024 | Jun 6, 2024 |
| 6-K | Current report (foreign issuer) | Jun 5, 2024 | Jun 5, 2024 |
| 6-K | Current report (foreign issuer) | Apr 29, 2024 | Apr 29, 2024 |
| 424B3 | Prospectus | Apr 24, 2024 | — |
| EFFECT | Filing | Apr 22, 2024 | — |
| POS AM | Filing | Apr 18, 2024 | — |
| 20-F | Annual report (foreign issuer) | Apr 18, 2024 | Dec 31, 2023 |
| 6-K | Current report (foreign issuer) | Apr 18, 2024 | Apr 18, 2024 |
| 6-K | Current report (foreign issuer) | Apr 3, 2024 | Apr 3, 2024 |
| 424B5 | Prospectus supplement | Jan 30, 2024 | — |
| 6-K | Current report (foreign issuer) | Jan 30, 2024 | Jan 30, 2024 |
| 6-K/A | Form 6-k/a | Dec 21, 2023 | Jun 30, 2023 |
| 6-K | Current report (foreign issuer) | Dec 20, 2023 | Dec 20, 2023 |
| 6-K | Current report (foreign issuer) | Dec 14, 2023 | Dec 14, 2023 |
| SC 13D/A | Amended ownership over 5% (active) | Dec 8, 2023 | — |
| 424B3 | Prospectus | Nov 30, 2023 | — |
| EFFECT | Filing | Nov 29, 2023 | — |
| SC 13D/A | Amended ownership over 5% (active) | Nov 29, 2023 | — |
| POS AM | Filing | Nov 29, 2023 | — |
| 6-K | Current report (foreign issuer) | Nov 29, 2023 | Nov 29, 2023 |
| 6-K | Current report (foreign issuer) | Nov 28, 2023 | Nov 28, 2023 |
| 6-K | Current report (foreign issuer) | Nov 14, 2023 | Nov 14, 2023 |
| 6-K | Current report (foreign issuer) | Nov 8, 2023 | Nov 8, 2023 |
| 424B3 | Prospectus | Oct 23, 2023 | — |
| 6-K | Current report (foreign issuer) | Oct 20, 2023 | Oct 20, 2023 |
| F-6 POS | Filing | Oct 6, 2023 | — |
| 6-K | Current report (foreign issuer) | Oct 6, 2023 | Oct 6, 2023 |
| 6-K | Current report (foreign issuer) | Sep 20, 2023 | Sep 20, 2023 |
| 6-K | Current report (foreign issuer) | Sep 5, 2023 | Sep 5, 2023 |
| 6-K | Current report (foreign issuer) | Sep 5, 2023 | Sep 4, 2023 |
| 424B3 | Prospectus | Aug 11, 2023 | — |
| EFFECT | Filing | Aug 10, 2023 | — |
| POS AM | Filing | Aug 10, 2023 | — |
| 6-K | Current report (foreign issuer) | Aug 10, 2023 | Aug 10, 2023 |
| 6-K | Current report (foreign issuer) | Aug 3, 2023 | Aug 3, 2023 |
| 6-K | Current report (foreign issuer) | Jul 24, 2023 | Jul 24, 2023 |
| 6-K | Current report (foreign issuer) | Jun 15, 2023 | Jun 15, 2023 |
| S-8 | Employee stock plan registration | Jun 8, 2023 | — |
| EFFECT | Filing | Jun 2, 2023 | — |
| 424B3 | Prospectus | Jun 2, 2023 | — |
| CORRESP | Letter to the SEC | Jun 1, 2023 | — |
| F-1/A | Form f-1/a | Jun 1, 2023 | — |
| 6-K | Current report (foreign issuer) | Jun 1, 2023 | Jun 1, 2023 |
| 6-K | Current report (foreign issuer) | May 18, 2023 | May 18, 2023 |
| CORRESP | Letter to the SEC | May 12, 2023 | — |
| CORRESP | Letter to the SEC | May 11, 2023 | — |
| F-1/A | Filing | May 11, 2023 | — |
| 6-K | Current report (foreign issuer) | May 11, 2023 | May 11, 2023 |
| 6-K | Current report (foreign issuer) | May 10, 2023 | May 10, 2023 |
| UPLOAD | Letter from the SEC | May 9, 2023 | — |
| 6-K | Current report (foreign issuer) | May 5, 2023 | May 5, 2023 |
| F-1 | Registration statement (foreign issuer) | May 3, 2023 | — |
| D | Filing | Apr 13, 2023 | — |
| SC 13D/A | Amended ownership over 5% (active) | Apr 10, 2023 | — |
| SC 13D/A | Amended ownership over 5% (active) | Apr 5, 2023 | — |
| 424B5 | Prospectus supplement | Apr 4, 2023 | — |
| 6-K | Current report (foreign issuer) | Apr 4, 2023 | Apr 4, 2023 |
| 6-K | Current report (foreign issuer) | Apr 4, 2023 | Apr 4, 2023 |
| 6-K | Current report (foreign issuer) | Apr 3, 2023 | Apr 3, 2023 |
| SC 13D/A | Amended ownership over 5% (active) | Mar 31, 2023 | — |
| 6-K | Current report (foreign issuer) | Mar 30, 2023 | Mar 30, 2023 |
| 20-F | Annual report (foreign issuer) | Mar 30, 2023 | Dec 31, 2022 |
| 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 | — |
| 6-K | Current report (foreign issuer) | Feb 9, 2023 | Feb 9, 2023 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 8, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 6, 2023 | — |
| 6-K | Current report (foreign issuer) | Feb 6, 2023 | Feb 6, 2023 |
| 6-K | Current report (foreign issuer) | Jan 19, 2023 | Jan 19, 2023 |
| 6-K | Current report (foreign issuer) | Dec 8, 2022 | Dec 8, 2022 |
| SC 13D/A | Amended ownership over 5% (active) | Nov 28, 2022 | — |
| SC 13D/A | Amended ownership over 5% (active) | Nov 23, 2022 | — |
| 424B3 | Prospectus | Nov 22, 2022 | — |
| 424B3 | Prospectus | Nov 16, 2022 | — |
| 6-K | Current report (foreign issuer) | Nov 14, 2022 | Nov 14, 2022 |
| SC 13D/A | Amended ownership over 5% (active) | Nov 9, 2022 | — |
| 6-K | Current report (foreign issuer) | Nov 3, 2022 | Nov 3, 2022 |
| 6-K | Current report (foreign issuer) | Nov 1, 2022 | Nov 1, 2022 |
| 6-K/A | Form 6-k/a | Sep 14, 2022 | Jun 30, 2022 |
| 424B3 | Prospectus | Aug 30, 2022 | — |
| EFFECT | Filing | Aug 29, 2022 | — |
| EFFECT | Filing | Aug 29, 2022 | — |
| CORRESP | Letter to the SEC | Aug 25, 2022 | — |
| UPLOAD | Letter from the SEC | Aug 25, 2022 | — |
| POS AM | Filing | Aug 24, 2022 | — |
| SC 13D/A | Amended ownership over 5% (active) | Aug 23, 2022 | — |
| F-1 | Registration statement (foreign issuer) | Aug 19, 2022 | — |
| 6-K | Current report (foreign issuer) | Aug 18, 2022 | Aug 18, 2022 |
| 6-K | Current report (foreign issuer) | Aug 15, 2022 | Aug 15, 2022 |
| SC 13D/A | Amended ownership over 5% (active) | Aug 5, 2022 | — |
| D | Filing | Aug 4, 2022 | — |
| 6-K | Current report (foreign issuer) | Jul 26, 2022 | Jul 26, 2022 |
| 424B5 | Prospectus supplement | Jul 26, 2022 | — |
| 6-K | Current report (foreign issuer) | Jul 22, 2022 | Jul 22, 2022 |
| 6-K | Current report (foreign issuer) | Jul 21, 2022 | Jul 21, 2022 |
| 6-K | Current report (foreign issuer) | Jul 21, 2022 | Jul 21, 2022 |
| 424B5 | Prospectus supplement | Jul 20, 2022 | — |
| 6-K | Current report (foreign issuer) | Jun 17, 2022 | Jun 17, 2022 |
| 6-K | Current report (foreign issuer) | May 27, 2022 | May 27, 2022 |
| 6-K | Current report (foreign issuer) | May 10, 2022 | May 10, 2022 |
| 6-K | Current report (foreign issuer) | May 5, 2022 | May 5, 2022 |
| EFFECT | Filing | Apr 19, 2022 | — |
| 6-K | Current report (foreign issuer) | Apr 13, 2022 | Apr 13, 2022 |
| 6-K | Current report (foreign issuer) | Apr 6, 2022 | Apr 6, 2022 |
| EFFECT | Filing | Apr 4, 2022 | — |
| POS AM | Filing | Mar 31, 2022 | — |
| 6-K | Current report (foreign issuer) | Mar 31, 2022 | Mar 31, 2022 |
| CORRESP | Letter to the SEC | Mar 29, 2022 | — |
| POS AM | Filing | Mar 29, 2022 | — |
| 6-K | Current report (foreign issuer) | Mar 10, 2022 | Mar 10, 2022 |
| 20-F | Annual report (foreign issuer) | Mar 10, 2022 | Dec 31, 2021 |
| 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 | — |
| 6-K | Current report (foreign issuer) | Feb 3, 2022 | Feb 3, 2022 |
| 424B3 | Prospectus | Jan 19, 2022 | — |
| EFFECT | Filing | Jan 18, 2022 | — |
| CORRESP | Letter to the SEC | Jan 14, 2022 | — |
| UPLOAD | Letter from the SEC | Jan 14, 2022 | — |
| SC 13D/A | Amended ownership over 5% (active) | Jan 10, 2022 | — |
| F-1 | Registration statement (foreign issuer) | Jan 7, 2022 | — |
| D | Filing | Dec 21, 2021 | — |
| 424B5 | Prospectus supplement | Dec 20, 2021 | — |
| 6-K | Current report (foreign issuer) | Dec 20, 2021 | Dec 17, 2021 |
| 6-K | Current report (foreign issuer) | Dec 15, 2021 | Dec 15, 2021 |
| 6-K | Current report (foreign issuer) | Nov 15, 2021 | Nov 15, 2021 |
| 6-K | Current report (foreign issuer) | Nov 4, 2021 | Nov 4, 2021 |
| 6-K | Current report (foreign issuer) | Sep 29, 2021 | Sep 29, 2021 |
| 6-K | Current report (foreign issuer) | Sep 22, 2021 | Sep 22, 2021 |
| SC 13D/A | Amended ownership over 5% (active) | Sep 8, 2021 | — |
Showing 200 filings, the most recent 200. 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.