Denison Mines Corp. SEC filings DNN
Denison Mines Corp. has 675 filings in SEC EDGAR's recent list, going back to Jun 11, 1998. Its latest annual report, Form 40-F, was filed on Mar 30, 2026 for the period ended Dec 31, 2025. The most recent current report (Form 6-K) was filed on Aug 14, 2026. The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| SD | Specialized disclosure (conflict minerals) | Sep 25, 2024 | — |
| SUPPL | Filing | Oct 12, 2023 | — |
| SUPPL | Filing | Oct 10, 2023 | — |
| SUPPL | Filing | Sep 28, 2021 | — |
| EFFECT | Filing | Sep 17, 2021 | — |
| SUPPL | Filing | Nov 13, 2020 | — |
| SUPPL | Filing | Oct 8, 2020 | — |
| SUPPL | Filing | Oct 7, 2020 | — |
| EFFECT | Filing | Jun 3, 2020 | — |
| RW | Filing | Mar 18, 2020 | — |
| UPLOAD | Letter from the SEC | Aug 6, 2015 | — |
| CORRESP | Letter to the SEC | Jul 28, 2015 | — |
| UPLOAD | Letter from the SEC | Jul 23, 2015 | — |
| CORRESP | Letter to the SEC | Jul 15, 2015 | — |
| CORRESP | Letter to the SEC | Jun 11, 2015 | — |
| UPLOAD | Letter from the SEC | Jun 5, 2015 | — |
| 425 | Filing | Dec 2, 2013 | — |
| 425 | Filing | Nov 19, 2013 | — |
| 425 | Filing | Oct 30, 2013 | — |
| 425 | Filing | Oct 24, 2013 | — |
| 425 | Filing | Oct 15, 2013 | — |
| 425 | Filing | Oct 15, 2013 | — |
| 425 | Filing | Oct 8, 2013 | — |
| 425 | Filing | Sep 19, 2013 | — |
| 425 | Filing | Sep 17, 2013 | — |
| D | Filing | Jun 27, 2013 | — |
| 425 | Filing | Feb 1, 2013 | — |
| 425 | Filing | Jan 30, 2013 | — |
| 425 | Filing | Nov 29, 2012 | — |
| 425 | Filing | Nov 29, 2012 | — |
| 425 | Filing | Nov 15, 2012 | — |
| 425 | Form 425 | Nov 14, 2012 | — |
| UPLOAD | Letter from the SEC | Sep 12, 2012 | — |
| CORRESP | Letter to the SEC | Sep 11, 2012 | — |
| UPLOAD | Letter from the SEC | Sep 4, 2012 | — |
| CORRESP | Letter to the SEC | Aug 30, 2012 | — |
| UPLOAD | Letter from the SEC | Aug 17, 2012 | — |
| D | Filing | Dec 20, 2010 | — |
| UPLOAD | Letter from the SEC | Dec 8, 2009 | — |
| UPLOAD | Letter from the SEC | Nov 4, 2009 | — |
| UPLOAD | Letter from the SEC | Mar 17, 2008 | — |
| UPLOAD | Letter from the SEC | Mar 17, 2008 | — |
| CORRESP | Letter to the SEC | Jan 14, 2008 | — |
| CERTAMX | Auto-generated paper document | Apr 19, 2007 | — |
| 8-A12B | Filing | Apr 18, 2007 | — |
| UPLOAD | Letter from the SEC | Jan 24, 2007 | — |
| UPLOAD | Letter from the SEC | Jan 23, 2007 | — |
| UPLOAD | Letter from the SEC | Aug 4, 2006 | — |
| CORRESP | Letter to the SEC | Aug 3, 2006 | — |
| UPLOAD | Letter from the SEC | Jun 21, 2006 | — |
| CORRESP | Letter to the SEC | Jun 2, 2006 | — |
| CORRESP | Letter to the SEC | Jun 1, 2006 | — |
| CORRESP | Letter to the SEC | May 19, 2006 | — |
| 20FR12G/A | Amendment no. 5 to form 20fr12g | Jan 13, 2000 | — |
| 20FR12G/A | Amendment no. 4 to form 20fr12g | Jul 20, 1999 | — |
| NT 20-F | Notice of late filing for form 20-f | Mar 31, 1999 | Dec 31, 1998 |
| 20FR12G/A | Amendment no. 3 to form 20fr12g | Feb 26, 1999 | — |
| 20FR12G/A | Amendment no. 2 to form 20-f 12(g) | Jan 11, 1999 | — |
| 20FR12G/A | Form 20f | Oct 8, 1998 | — |
| 20FR12G | Form 20-f | Jun 11, 1998 | — |
Showing 60 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
- Miscellaneous Metal Ores (SIC 1090)
- Listed as
- DNN (NYSE)
- Fiscal year ends
- December 31
- Incorporated in
- Ontario, Canada
- Headquarters
- Toronto
- SEC filer status
- Non-accelerated filer
- SEC CIK
- 1063259
- Former names
- INTERNATIONAL URANIUM CORP (until Dec 8, 2006)
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.