DNN on NYSE

Denison Mines

Logo: http://www.oma.on.ca/en/membership/resources/denison%20mines.jpg, Non-free logo, via Wikipedia5

Canadian mining company

Denison Mines Corp. is a Canadian uranium exploration, development, and production company. Founded by Stephen B. Roman, and best known for its uranium mining in Blind River and Elliot Lake, it later diversified into coal, potash, and other projects.3 It was founded by Stephen Boleslav Roman.1 Its shares trade on NYSE under the symbol DNN.1 Wikipedia text CC BY-SA 4.0

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Last updated Oct 20, 2026.

Overview

1985Founded1

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  • TickerDNN on NYSE1
  • Industrymining1
  • HeadquartersToronto1
  • Websitewww.denisonmines.com
  • Incorporated inOntario, Canada6
  • Business address40 University Ave., Suite 1100, Toronto, M5J 1T16
  • Filer categoryNon-accelerated filer6
  • Legal formBusiness corporations (which includes professional corporations)4
  • LEI529900JWGSW17LJK65864
  • StatusActive4
  • LEI statusIssued and current4
  • Registered address1100-40 University Avenue, M5J 1T1 Toronto, Canada4
  • Registered withMinistry of Government and Consumer Services, 19190464

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Denison Mines Corp. is a Canadian uranium exploration, development, and production company. Founded by Stephen B. Roman, and best known for its uranium mining in Blind River and Elliot Lake, it later diversified into coal, potash, and other projects.3

Financials

From the company’s reports to the SEC. Every number links to the filing it came from.

Financial statements

Every line of the income statement as filed: the last 2 fiscal years, latest first.8

Period ending2025-12-312024-12-31
REVENUES (note 20)4.9M CAD4.0M CAD
Operating expenses (note 20)-5.7M CAD-4.8M CAD
Exploration (note 20)-17.2M CAD-12.0M CAD
Evaluation (note 20)-48.2M CAD-34.0M CAD
General and administrative (note 20)-19.6M CAD-16.5M CAD
Other income (loss) (note 19)24.4M CAD-31.2M CAD
Total expenses before finance charges, equity accounting and tax-66.3M CAD-98.5M CAD
Loss before net finance expense, equity accounting and taxes-61.4M CAD-94.5M CAD
Finance (expense) income, net (note 19)-159.6M CAD2.7M CAD
Equity pick up-investment in associates (note 6)-1.8M CAD0 CAD
Equity pick up-joint venture (note 7)-1.2M CAD16.0K CAD
Loss before taxes-223.9M CAD-91.8M CAD
Deferred Income tax recovery (note 15)6.6M CAD236.0K CAD
Net loss from continuing operations-217.3M CAD-91.6M CAD
Net income from discontinued operations, net of income taxes (note 20)0 CAD471.0K CAD
Net loss for the period-217.3M CAD-91.1M CAD
Foreign currency translation change-224.0K CAD4.0K CAD
Comprehensive loss for the period-217.5M CAD-91.1M CAD
Continuing operations-0.24 CAD-0.10 CAD
Discontinued operations0.00 CAD0.00 CAD
Continuing operations-0.24 CAD-0.10 CAD
Discontinued operations0.00 CAD0.00 CAD
Basic896.6M shares892.2M shares
Diluted896.6M shares892.2M shares

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Corporate structure

Denison Mines sits at the top of its group. 1 entity, 1 country on record. Switch between the flow chart and the network, and select any entity to see its details.

Major holders of Denison Mines

  • VAN ECK ASSOCIATES CORP Filed SCHEDULE 13G/A on Denison Mines, latest Aug 14, 2026 (5 filings since Aug 14, 2025)
  • Global X Management CO LLC Filed SCHEDULE 13G/A on Denison Mines, latest May 15, 2026 (5 filings since Feb 14, 2023)
  • MMCAP International Inc. SPC Filed SC 13G/A on Denison Mines, latest Feb 13, 2024 (3 filings since Mar 31, 2022)
  • Denison Mines Toronto, Canada

Built from parent and subsidiary links from GLEIF, the Global Legal Entity Identifier Foundation (CC0); major holders from Schedules 13D and 13G. Each entity in the chart links to its source.

The story

Founded by Stephen Boleslav Roman in 1985.1

About 1,000 workers at Denison's Elliot Lake mines went on strike in 1974, protesting unhealthy working conditions. The protest led to immediate improvements in safety conditions, and prompted Bill Davis to commission James Milton Ham to lead the Royal Commission on the Health and Safety of Workers in Mines.

Denison served as manager for Uranium Participation Corporation, a Toronto-based investment fund which holds no license to deal in uranium until 2021 before it was sold to Sprott Asset Management and WMC Energy.

From Wikipedia’s article on Denison Mines, shared under CC BY-SA 4.0.7

Leadership

Who has led Denison Mines, and when. Pick a name to see everywhere that person has worked.

Products and brands

Denison's principal assets are its northern Saskatchewan interests in the McClean Lake mine, the Midwest Uranium Project and the Wheeler River project. Denison also manages decommissioned uranium mines in the Elliot Lake area.

In 2013, Denison purchased a number of uranium exploration projects from Fission Energy, including the Waterbury Lake uranium development and other properties in the Athabasca Basin.

In January 2017 Denison announced it had executed an agreement to increase ownership of the Wheeler River Uranium Project in the Athabasca Basin to 66%.

From Wikipedia’s article on Denison Mines, shared under CC BY-SA 4.0.7

Former names

  • INTERNATIONAL URANIUM CORPOct 8, 1998 to Dec 8, 20066

Timeline

  1. 1985Founded Founded1

Calendar

Coming up

  1. Nov 5, 2026Reports results for the quarter ending Sep/2026 A year earlier it reported ($0.01) a share, on Nov 6, 2025.9

Upcoming dates from Nasdaq's calendar; past results from the company's 8-K filings (Item 2.02). The full markets calendar

Filings

152 filings to the SEC since October 2021: 5 annual reports, 13 large holders, 134 other. The latest 20:

  1. Sep 14, 2026F-X EDGAR
  2. Sep 11, 2026F-10EF EDGAR
  3. Aug 14, 20266-K FORM 6-K DATED AUGUST 14, 2026 EDGAR
  4. Aug 14, 2026SCHEDULE 13G/A EDGAR
  5. Jul 28, 20266-K FORM 6-K DATED JULY 28, 2026 EDGAR
  6. Jul 2, 20266-K FORM 6-K DATED JULY 2, 2026 EDGAR
  7. May 15, 2026SCHEDULE 13G/A EDGAR
  8. May 14, 20266-K EDGAR
  9. Apr 8, 20266-K EDGAR
  10. Apr 7, 2026SCHEDULE 13G/A EDGAR
  11. Mar 31, 20266-K FORM 6-K DATED MARCH 30, 2026 EDGAR
  12. Mar 31, 20266-K FORM 6-K DATED MARCH 31, 2026 EDGAR
  13. Mar 30, 202640-F EDGAR
  14. Mar 30, 20266-K FORM 6-K DATED MARCH 30, 2026 EDGAR
  15. Mar 30, 20266-K FORM 6-K DATED MARCH 30, 2026 EDGAR
  16. Mar 30, 20266-K FORM 6-K DATED MARCH 30, 2026 EDGAR
  17. Mar 11, 20266-K EDGAR
  18. Mar 11, 20266-K FORM 6-K DATED MARCH 11, 2026 EDGAR
  19. Mar 4, 20266-K FORM 6-K DATED MARCH 4, 2025 EDGAR
  20. Feb 19, 20266-K FORM 6-K DATED FEBRUARY 19, 2026 EDGAR

The 152 filings since October 2021 can be filtered by form type and year here when JavaScript is on.

Every filing from the last five years, summarized. The full record is on SEC EDGAR.

Major holders

Investors who own more than 5% of the shares must tell the SEC: a 13D if they may seek to influence the company, a 13G if they hold passively.

Held by these funds

The largest holders among investment managers' 13F reports for the quarter ending Jun 30, 2026, the top 25 of 100. Change is in shares since the quarter before.

FundSharesValueShare of the fundChange
Van Eck Associates Corp87,521,620$267.6M0.2%+16,013,484
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.65,005,137$199.3M0.2%+955,846
Alps Advisors Inc48,826,954$149.4M0.7%+2,812,738
Hood River Capital Management LLC26,723,056$81.8M0.6%−106,335
Vanguard Capital Management LLC26,152,008$80.2M0.0%+703,019
Norges Bank11,801,253$36.2M0.0%New
Morgan Stanley11,557,558$35.4M0.0%+555,247
Renaissance Technologies LLC9,498,513$29.1M0.0%+42,800
TD Asset Management Inc8,835,282$27.1M0.0%−488,283
Vanguard Fiduciary Trust Co7,942,163$24.4M0.0%+152,000
UBS Group AG7,879,709$24.1M0.0%−403,655
Scopus Asset Management, L.P.7,511,802$23.0M0.5%No change
Vident Advisory, LLC7,457,149$22.8M0.2%−8,910
DAVENPORT & Co LLC7,175,200$22.2M0.1%+3,376,738
Bnp Paribas Financial Markets6,324,395$19.4M0.0%+3,201,896
Two Sigma Investments, LP6,191,791$18.9M0.0%−5,112,449
Royal Bank Of Canada5,920,993$18.1M0.0%+117,209
Barclays PLC5,758,933$17.6M0.0%+5,571,936
Connor, Clark & Lunn Investment Management Ltd.5,398,440$16.5M0.0%−529,920
Citadel Advisors LLC5,388,091$16.5M0.0%−2,493,292
Goehring & Rozencwajg Associates, LLC5,117,155$15.7M0.9%+396,540
Temasek Holdings (Private) Ltd4,844,768$14.8M0.0%+1,115,775
Bank Of America Corp /de/4,325,704$13.2M0.0%+2,581,924
Azarias Capital Management, L.P.4,238,742$13.0M5.6%+1,315,775
Manufacturers Life Insurance Company, The4,090,630$12.5M0.0%−402

13F reports cover disclosed long positions in U.S. stocks only.

SEC filer profile

How Denison Mines is registered with the Securities and Exchange Commission, from its EDGAR record and the cover page of its latest annual report.

  • Name on EDGARDENISON MINES CORP.2
  • CIK0001063259
  • Employer ID (EIN)98-062228413
  • Filer statusNon-accelerated filer not an emerging growth company2
  • Incorporated inOntario, Canada13
  • Fiscal year endsDecember 312
  • Industry code (SIC)1090 Miscellaneous Metal Ores2
  • SEC reviewing officeOffice of Energy & Transportation, Division of Corporation Finance2
  • Business address40 University Ave., Suite 1100, Toronto, M5J 1T1, Ontario, Canada2
  • Phone(416) 979-19912
  • Shares outstanding901,610,950 shares as of Dec 31, 202513
  • AuditorKPMG LLP, Toronto, ON, Canada PCAOB ID 85; it also attests to the company’s internal control over financial reporting13
  • On EDGAR sinceJun 11, 19982
  • Filings675 in all: 6-K (514), 40-F (20), 425 (15), UPLOAD (14), 20-F/A (10), CORRESP (10), F-X (9), SC 13G (9)2
    All 35 form types

    20-F (8), SC 13G/A (7), SUPPL (6), 20FR12G/A (5), F-10/A (5), S-8 (5), SCHEDULE 13G/A (5), F-10 (4), F-8/A (4), FWP (3), 40-F/A (2), D (2), EFFECT (2), S-8 POS (2), SCHEDULE 13G (2), 20FR12G (1), 8-A12B (1), CERTAMX (1), F-10EF (1), F-10POS (1), F-8 (1), F-80 (1), NT 20-F (1), RW (1), SC 13D (1), SC 13D/A (1), SD (1)

  • Latest filingsAnnual report (40-F) Mar 30, 2026

Securities registered for trading

ClassSymbolExchange
Common SharesDNNNYSE American LLC

From the cover page of the 40-F filed Mar 30, 2026 (Section 12(b) of the Exchange Act).13

Sources

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