Denison Mines Corp. DNN

What this company does

Denison Mines Corp. is engaged in uranium exploration, development and mining. At the end of 2025, Denison had a total of 95 active employees, all of whom were employed in Canada. Denison conducts its business through a number of subsidiaries and joint arrangements. Modern Denison was established by articles of amalgamation as International Uranium Corporation (“IUC”) on May 9, 1997 pursuant to the Business Corporations Act (Ontario). Effective December 1, 2006, IUC’s articles were amended to change its name to “Denison Mines Corp.” Denison is a party to a toll-milling arrangement through its 22.50% interest in the MLJV, whereby ore is processed for the Cigar Lake Joint Venture (“CLJV”) at the McClean Lake processing facility (the “Cigar Toll Milling”).

Written from the business description in Denison Mines Corp.'s annual report to the U.S. Securities and Exchange Commission, filed 30 March 2026. Every sentence was checked against that document before publication.