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Denison Mines Corp. (DNN), a uranium mining company, filed a Form 40-F on March 30, 2026, for its fiscal year ended December 31, 2025. This annual information form incorporates by reference the company's IFRS financial statements and management's discussion and analysis. The extracted XBRL tags reveal detailed disclosures on property, plant, and equipment (PPE), including mining properties in Saskatchewan (CA-SK), mineral properties, buildings, production machinery, and right-of-use assets, with gross carrying amounts and accumulated depreciation reported for 2025, 2024, and 2023. Stock option details cover exercise price ranges from $1.01-$3.61. Fair value measurements include inputs like share price, strike price, risk-free rate, volatility, and credit spread for capped call options and embedded derivatives, classified across Levels 1-3 of the fair value hierarchy. Financial assets encompass uranium investments, equity warrants/shares, debt instruments, and cash equivalents, while liabilities include lease obligations, flow-through premium liabilities, post-employment benefits, and debt. Key subsidiaries and joint arrangements involve Denison Waterbury Corp., Wheeler River JV (with Uranium Energy Corp., Orano Canada), Waterbury Lake Uranium LP, and projects like Millennium, Kiggavik, and Christie Lake. Uranium prepayment and sale contracts are noted for late 2025. Overall, the filing provides comprehensive balance sheet and equity data, reflecting ongoing exploration, development, and financial instrument management in the uranium sector amid volatile commodity prices.