Denison Mines

DNN

Market cap $3.59B

Vancouver, British Columbia--(Newsfile Corp. - March 3, 2026) - Cosa Resources Corp. (TSXV: COSA) (OTCQB: COSAF) (FSE: SSKU) ("Cosa" or the "Company") is pleased to announce expansions to the Murphy Lake North ("MLN"), Darby ("Darby"), and Orion ("Orion") projects (Figure 1). Darby and MLN are joint ventures (the "Joint Venture") between Cosa and Denison Mines Corp. ("Denison") (TSX: DML) (NYSE American: DNN) and are located 10 kilometres west of Cameco's Cigar Lake Mine and three kilometres east of IsoEnergy's Hurricane Deposit, respectively.

TORONTO, Feb. 24, 2026 /PRNewswire/ - Denison Mines Corp. ("Denison" or the "Company") (TSX: DML) (NYSE American: DNN) is pleased to announce that its Board of Directors has made a Final Investment Decision ("FID") to proceed with the construction of the Phoenix In-Situ Recovery ("ISR") uranium mine ("Phoenix" or the "Project"), and that site preparation and construction activities for Phoenix are planned to commence in March 2026. PDF Version  David Cates, President and CEO of Denison commented,  "Making a Final Investment Decision and the upcoming initiation of construction activities at Phoenix mark the beginning of a new era in Denison's history and the Canadian uranium mining sector.

TORONTO, Feb. 19, 2026 /PRNewswire/ - Denison Mines Corp. ("Denison" or the "Company") (TSX: DML) (NYSE American: DNN) is pleased to announce that the Canadian Nuclear Safety Commission ("CNSC") has released the decision of its administrative tribunal (the "Commission") approving the Environmental Assessment ("EA") and issuing the Licence to Prepare Site & Construct a Mine and Mill (the "Licence") for the Wheeler River Uranium Project ("Wheeler River").  With the EA having previously been approved by the Province of Saskatchewan, and other provincial approvals necessary to commence construction already received, federal approval of the EA and the issuance of the Licence represent the final regulatory approvals required to commence construction of the Phoenix In-Situ Recovery ("ISR") uranium mine ("Phoenix" or the "Project").

TORONTO, Feb. 17, 2026 /PRNewswire/ - Denison Mines Corp. ("Denison" or the "Company") (TSX: DML; NYSE American: DNN) is pleased to announce that, following a competitive tender process, it has awarded Wood Canada Limited ("Wood"), a global leader in consulting and engineering, with the construction management contract (the "CM Contract") to oversee the building of the Phoenix in-situ recovery uranium mine ("Phoenix", or the "Project"). This is a key milestone for the Project and represents another crucial step towards the commencement of construction.

Kelowna, British Columbia--(Newsfile Corp. - January 28, 2026) - F3 Uranium Corp. (TSXV: FUU) (OTCQB: FUUFF) ("F3" or the "Company") notes that pursuant its financing agreement with Denison Mines Corp. (TSX: DML) (NYSE American: DNN) from October 2023, ("Denison") it has elected to settle a portion of the interest accrued to date in common shares (the "Debt Settlement"). The payment to Denison will consist of a cash payment of $225,000 and a total of 815,217 common shares of the corporation at a deemed price of $0.138 per share Terms of the Debenture as previously announced The Debenture carries a 9% coupon (the "Interest"), payable quarterly, has a maturity date of October 18, 2028, and is convertible at Denison's option into common shares of the Company at a conversion price of $0.56 per share (the "Conversion Price").

Vancouver, British Columbia--(Newsfile Corp. - January 28, 2026) - Cosa Resources Corp. (TSXV: COSA) (OTCQB: COSAF) (FSE: SSKU) ("Cosa" or the "Company") is pleased to announce drilling has commenced at the Company's Darby ("Darby") project, with drilling at Murphy Lake North ("MLN") to follow (Figure 1). Darby and MLN are joint ventures (the "Joint Venture") between Cosa and Denison Mines Corp. ("Denison") (TSX: DML) (NYSE American: DNN) and are located 10 kilometres west of Cameco's Cigar Lake Mine and three kilometres east of IsoEnergy's Hurricane Deposit, respectively, in the eastern Athabasca Basin, Saskatchewan.

Denison Mines Corp. (DNN) is rated BUY (conditional on CNSC license approval), with a $4.18 price target and 8% discount rate. The Phoenix ISR project positions DNN in the lowest global cost quartile, leveraging innovative freeze wall technology and strong internal funding. Securing grid power and advancing multiple projects, DNN is well-placed to benefit from surging uranium demand driven by AI data center growth.

Vancouver, British Columbia--(Newsfile Corp. - January 21, 2026) - Cosa Resources Corp. (TSXV: COSA) (OTCQB: COSAF) (FSE: SSKU) ("Cosa" or the "Company") is pleased to announce drilling plans for the Company's Darby and Murphy Lake North ("MLN") projects (Figure 1). Darby and MLN are joint ventures (the "Joint Venture") between Cosa and Denison Mines Corp. (TSX: DML) (NYSE American: DNN) ("Denison") and are located 10 kilometres west of Cameco's Cigar Lake Mine and three kilometres east of IsoEnergy's Hurricane Deposit, respectively, in the eastern Athabasca Basin, Saskatchewan.

Vancouver, British Columbia--(Newsfile Corp. - January 14, 2026) - Cosa Resources Corp. (TSXV: COSA) (OTCQB: COSAF) (FSE: SSKU) ("Cosa" or the "Company") is pleased to report the promotion of Justin Rodko to Vice President, Corporate Development. Additionally, the Company announces the issuance of common shares to its largest shareholder and joint venture partner Denison Mines Corp. (TSX: DML) (NYSE American: DNN) ("Denison") pursuant to the acquisition agreement between Cosa and Denison dated November 26, 2024 (the "Acquisition Agreement").

TORONTO, Jan. 8, 2026 /PRNewswire/ - Denison Mines Corp. ("Denison" or the "Company") (TSX: DML) (NYSE American: DNN) is pleased to announce that grid power supply from Saskatchewan Power Corporation ("SaskPower") is available at the site of the future Phoenix in-situ recovery uranium mine ("Phoenix", or the "Project") following the recent installation of a new 138kV transmission line. The availability of grid power at the Phoenix site represents a significant step in de-risking the execution of the Project, as the electrification of the site is on the critical path of activities planned for the first year of construction and supports the establishment of the freeze wall planned to surround the initial mining area.