COSCIENS Biopharma Inc. SEC filings CSCIF
COSCIENS Biopharma Inc. has 917 filings in SEC EDGAR's recent list, going back to Oct 24, 2000. Its latest annual report, Form 20-F, was filed on Mar 25, 2026 for the period ended Dec 31, 2025. The most recent current report (Form 6-K) was filed on Jul 6, 2026. The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| SC 13E3/A | Filing | Jul 6, 2026 | — |
| SC 13E3/A | Filing | Jun 23, 2026 | — |
| SC 13E3/A | Filing | Jun 18, 2026 | — |
| SC 13E3/A | Filing | May 20, 2026 | — |
| SC 13E3/A | Filing | May 12, 2026 | — |
| SC 13E3/A | Filing | May 8, 2026 | — |
| SC 13E3/A | Filing | May 4, 2026 | — |
| SC 13E3 | Filing | Apr 20, 2026 | — |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Apr 17, 2026 | — |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Jun 11, 2025 | — |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Dec 20, 2024 | — |
| SC 13D | Ownership over 5% (active) | Sep 6, 2024 | — |
| SC 13G | Ownership over 5% (passive) | Jun 6, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 11, 2022 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 11, 2022 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 16, 2021 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 12, 2021 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 29, 2021 | — |
| SC 13G | Ownership over 5% (passive) | Jul 10, 2020 | — |
| SC 13G | Ownership over 5% (passive) | Jul 7, 2020 | — |
| SC 13G | Ownership over 5% (passive) | Feb 28, 2020 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2020 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 23, 2020 | — |
| SC 13G | Ownership over 5% (passive) | Sep 27, 2019 | — |
| SC 13G | Ownership over 5% (passive) | Sep 25, 2019 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Mar 18, 2019 | — |
| SC 13G | Ownership over 5% (passive) | Feb 11, 2019 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 9, 2017 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 12, 2016 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 14, 2016 | — |
| SC 13G | Ownership over 5% (passive) | Dec 17, 2015 | — |
| SC 13G | Ownership over 5% (passive) | Mar 13, 2015 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2014 | — |
| SC 13G | Ownership over 5% (passive) | Nov 29, 2013 | — |
| SC 13G | Ownership over 5% (passive) | Nov 19, 2012 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2011 | — |
| SC 13D | Ownership over 5% (active) | Jul 27, 2010 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jun 16, 2010 | — |
| SC 13D | Ownership over 5% (active) | Jun 16, 2010 | — |
| SC 13D | Ownership over 5% (active) | May 18, 2010 | — |
| SC 13D | Ownership over 5% (active) | May 17, 2010 | — |
| SC 13D | Ownership over 5% (active) | May 14, 2010 | — |
| SC 13G | Ownership over 5% (passive) | Apr 26, 2010 | — |
| SC 13G | Ownership over 5% (passive) | Feb 11, 2010 | — |
| SC 13G | Ownership over 5% (passive) | Feb 17, 2009 | — |
| SC 13G | Ownership over 5% (passive) | Feb 11, 2008 | — |
| SC 13G | Ownership over 5% (passive) | Feb 8, 2007 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Oct 11, 2006 | — |
| SC 13D | Ownership over 5% (active) | Mar 6, 2006 | — |
| SC 13G | Ownership over 5% (passive) | Feb 15, 2006 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2006 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 25, 2006 | — |
| SC 13G | Ownership over 5% (passive) | Feb 11, 2005 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 4, 2005 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 27, 2005 | — |
| SC 13G | Ownership over 5% (passive) | Feb 13, 2004 | — |
| SC 13G | Ownership over 5% (passive) | Feb 13, 2004 | — |
| SC 13D/A | Amended ownership over 5% (active) | Aug 6, 2003 | — |
| SC 13D | Ownership over 5% (active) | May 12, 2003 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2003 | — |
| SC 13D | Ownership over 5% (active) | May 24, 2002 | — |
| SC 13G/A | Amended ownership over 5% (passive) | May 23, 2002 | — |
| SC 13D | Ownership over 5% (active) | May 3, 2002 | — |
| SC 13G | Ownership over 5% (passive) | Mar 8, 2002 | — |
| SC 13G | Ownership over 5% (passive) | Feb 14, 2002 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2002 | — |
Showing 66 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
- Perfumes, Cosmetics & Other Toilet Preparations (SIC 2844)
- Listed as
- CSCIF (OTC)
- Fiscal year ends
- December 31
- Incorporated in
- Ontario, Canada
- Headquarters
- Toronto, Ontario, Canada
- SEC filer status
- Non-accelerated filer
- SEC CIK
- 1113423
- Former names
- Aeterna Zentaris Inc. (until Aug 7, 2024); AETERNA LABORATORIES INC (until May 25, 2004)
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All 22 Perfumes, Cosmetics & Other Toilet Preparations companies
Source: SEC EDGAR filings. This is company-reported data, not investment advice.