Welcome to our dedicated page for Denison Mines news (Ticker: DNN), a resource for investors and traders seeking the latest updates and insights on Denison Mines stock.
Denison Mines Corp (DNN) generates frequent news as it advances uranium mining, development, and exploration projects in the Athabasca Basin region of northern Saskatchewan, Canada. News coverage often centers on its flagship Wheeler River Uranium Project, where the company is progressing the Phoenix in-situ recovery (ISR) uranium mine and the Gryphon underground deposit through feasibility, permitting, and pre-construction stages.
Investors following DNN news can expect updates on regulatory milestones for Wheeler River, including Environmental Assessment approvals and Canadian Nuclear Safety Commission hearings related to licences for site preparation and construction. Denison also issues news on project readiness at Phoenix, such as detailed engineering progress, procurement of long-lead equipment, and the availability of grid power at the future mine site through a new 138kV transmission line installed by SaskPower.
Company releases frequently highlight Denison’s broader portfolio, including production and development activities at the McClean Lake Joint Venture using the SABRE mining method at McClean North, as well as its interests in the Midwest, Waterbury Lake, and other Athabasca Basin properties. News items may also cover strategic transactions and joint ventures, such as agreements with Skyharbour Resources to form exploration joint ventures around the Russell Lake property adjacent to Wheeler River.
Another recurring theme in Denison’s news is its engagement with Indigenous and northern communities. The company has reported signing an Impact Benefit Agreement and Exploration Agreement with Métis Nation–Saskatchewan and a regional Nuhenéné Benefit Agreement with First Nations and northern municipalities, providing consent and support for key projects. For readers tracking DNN, this news page offers a centralized view of operational, regulatory, partnership, and community-related developments affecting Denison’s uranium business.
Denison (NYSE: DNN) announced a Final Investment Decision to build the Phoenix in-situ recovery uranium mine with site preparation and construction planned to start in March 2026. The company expects construction to take ~two years and targets first production by mid-2028. Phoenix is part of the Wheeler River joint venture where Denison is the operator with 90% JV interest and an effective 95% interest in Wheeler River. Provincial and federal environmental approvals and a licence to prepare site & construct were received in July 2025 and February 2026.
Denison (NYSE American: DNN) received final federal approval from the Canadian Nuclear Safety Commission on Feb 19, 2026, approving the Environmental Assessment and issuing the Licence to Prepare Site & Construct for the Phoenix ISR uranium mine at Wheeler River.
The Project is construction-ready, with an approximately 2-year construction timeline and remains on track for first production by mid-2028. Denison holds a 90% operator interest in Wheeler River; JCU holds 10%.
Denison (NYSE American: DNN) awarded Wood Canada a construction management contract to oversee building the Phoenix in-situ recovery uranium mine at Wheeler River.
The CM Contract covers processing-plant construction management, site infrastructure installation, procurement support and integrated project controls, aiming to enable an estimated 24-month construction period once federal permits and a Final Investment Decision are secured.
Cosa Resources (TSXV: COSA; OTCQB: COSAF) and Denison Mines (TSX: DML; NYSE: DNN) have begun winter 2026 drilling on the Darby joint venture, with Murphy Lake North (MLN) to follow. Cosa operates both projects and holds a 70% interest, Denison holds 30%.
Planned work includes ~2,500 metres at Darby to test 2025 relogging targets and ~1,200 metres at MLN to fill a 1,200‑metre lake-access drilling gap along the Cyclone trend.
Cosa (TSX-V: COSA / OTCQB: COSAF) and Denison (TSX: DML / NYSE: DNN) announced winter 2026 drill programs at the Darby and Murphy Lake North (MLN) joint-venture projects in the eastern Athabasca Basin, near Cigar Lake and Hurricane. Cosa (operator, 70%) and Denison (30%) plan ~2,500 metres at Darby and ~1,200 metres at MLN to test historical anomalous uranium in lower sandstone and graphitic basement faults. Denison will participate in funding 2026 MLN exploration to maintain its 30% interest. Camp construction is underway with Darby drilling expected to start before end of January and MLN in March.
Denison (NYSE: DNN) announced that SaskPower has completed a new 138kV transmission line providing grid power to the future Phoenix in-situ recovery uranium mine site. The ~6 km line connects Phoenix to the regional 138kV network and supplies a planned up to 8.8 MW allocation. On-site distribution long-lead equipment has been procured and is scheduled for first-year construction installation. The transmission line was funded by the Wheeler River joint venture. Commencement of construction remains subject to final regulatory approvals and Denison's final investment decision.
Denison (NYSE: DNN) is ready to make a final investment decision and commence construction of the Phoenix ISR uranium mine pending final federal approvals, targeting first production by mid-2028 following a 2-year construction schedule.
Key updates include a Class 2 post-FID Updated Capex of $600 million (2026 dollars; ~20% above the 2023 FS when inflated), ~87% engineering complete, shipment schedules for long-lead items on track, and over $700 million of cash, uranium and investments as of Sept 30, 2025 to fund initial capital requirements.
Denison (NYSE: DNN) closed a transaction with Skyharbour and formed four exploration joint ventures on claims from Skyharbour's Russell Lake project located adjacent to Denison's Wheeler River.
Key terms: Denison will be operator and hold 49% of Wheeler North and 70% of Wheeler River Inliers; Denison holds 20% of Russell Lake and 30% of Getty East where Skyharbour will be operator. Denison has option agreements to increase its interest in Wheeler North and Getty East to up to 70%.
The announcement notes prior regulatory milestones for Wheeler River: provincial EA approval in July 2025 and conclusion of the CNSC public hearing in December 2025.
Denison (DNN) signed an Impact Benefit Agreement (IBA) and an Exploration Agreement with Métis Nation–Saskatchewan, 13 MN–S Locals, MN–S NR-1 and MN–S NR-3, confirming Métis consent and support for development and exploration around the Wheeler River Project.
The company holds an effective 95% interest in Wheeler River. Provincial Environmental Assessment approval was granted in July 2025, and Canadian Nuclear Safety Commission hearings for federal approval and a construction licence began in October 2025 and are scheduled to conclude the week of Dec 8, 2025.
Denison (NYSE: DNN) and Ya'thi Néné Lands and Resources signed the Nuhenéné Benefit Agreement on Dec 1, 2025 with seven Athabasca communities, granting consent and support for Denison's Wheeler River, Waterbury Lake, Midwest (25.77% Denison) and McClean Lake (22.5% Denison) projects in northern Saskatchewan.
The Agreement secures community roles in environmental oversight (including Woodland Caribou and surface water monitoring), commitments on community investment, business, employment, training and financial compensation, and formalizes consent as Denison advances federal approvals for the Phoenix ISR project.