TORONTO, Dec. 4, 2025 /PRNewswire/ – Denison Mines Corp. (“Denison“, “DML” or “Company“) (TSX: DML, NYSE American: DNN) is happy to announce the signing of an Affect Receive advantages Oath (“IBA“) between Denison and the Métis Family–Saskatchewan (“MN–S“), 13 MN–S Locals, MN-S Northern Area 1 (“MN–S NR-1“), and MN–S Northern Area 3 (“MN–S NR-3“) (jointly, the “Métis Parties“).  The IBA confirms the Métis Events’ consent to and backup for the improvement and operation of Denison’s flagship Wheeler River Venture (the “Project“) in northern Saskatchewan. As well as, the events have additionally entered into an Exploration Oath (the “Exploration Agreement“) masking Denison’s exploration and analysis actions inside of MN–S NR-1 and MN–S NR-3 of the Métis Place of birth (see Determine 1). PDF Version.

MN–S President Glen McCallum mentioned, “Denison Mines recognized its duty to consult with MN- S Regions, MN–S Locals, and communities on the Wheeler River Project early in the planning stages. All parties have been negotiating since 2019. The MN–S commends Denison’s commitment to environmental reclamation post-project and stability for citizens into the future. Today’s IBA not only represents enormous economic opportunities for Métis families, but a milestone in our government’s relationship with Denison and other industry partners.”

David Cates, President and CEO of Denison, commented, “We extend our sincere appreciation to the leadership of the MN–S, MN–S NR-1, MN–S NR-3, and the 13 MN–S Locals for trusting Denison to advance the Wheeler River Project within the Métis Homeland. Since the beginning of our engagement with the MN–S, our team has remained deeply committed to building a long-lasting relationship grounded in trust, transparency, and mutual respect. Formalizing both the IBA and the Exploration Agreement reflects the progress we have made together, and also our shared commitment to ensuring that the interests, knowledge, and voices of Métis citizens in Saskatchewan are meaningfully incorporated into the construction and future operation of the Project and Denison’s exploration and evaluation activities in MN–S NR-1 and MN–S NR-3.”

Laura Burnouf, Regional Director of MN–S NR-1 mentioned, “Northern Saskatchewan is not only rich in natural resources, it is vibrant with the culture, tradition, and language of a distinct people. Denison’s engagement with our Métis communities and its focus on local talent brings economic and employment opportunities to our Region and surrounding communities at a time when we face challenges with homelessness and addictions. The strong partnership between all of our impacted Métis Regions and Locals, MN–S, and Denison Mines is a reflection of how we believe in progress and are more than willing to collaborate with industry to better the outlook for our citizens.” 

Regional Director of MN–S NR3, Minister Brennan Merasty, remarked, “Respecting our inherent and constitutionally protected rights as Métis citizens, our communities in the north have been engaged with Denison for six years. Today’s signing means our Region, and surrounding communities will see significant cultural, economic, and employment benefits to be provided through this partnership. Our citizens’ voices deserved to be at the negotiating table, and we will continue to work alongside Denison as the Wheeler River Project advances forward.” 

The IBA used to be entered into through Denison (by itself behalf and as operator in the name of the Wheeler River Joint Project), the MN–S, MN–S NR-1, MN–S NR-3 and every of please see MN–S Locals inside of MN–S NR-1 or MN–S NR-3, which might be constructed from electorate who are living and apply conventional actions within the neighborhood of the Wheeler River Venture: Uranium Town Native 50, Stony Rapids Native 80, Los angeles Ronge Native 19, Weyakwin Native 16, Log Bay Native 20, Patuanak Native 82, Île-à-la-Crosse Native 21, Canoe River Native 174, Jans Bay Native 38, Beauval Native 37, Cole Bay Native 41, Dore/Sled Puddle Native 67, and Inexperienced Puddle Native 5 (jointly, the “Métis Locals“).

Affect Receive advantages Oath

The IBA recognizes that the Venture is situated inside the Métis Place of birth and emphasizes a shared loyalty to making sure that the a success execution of the Venture meaningfully helps the Métis Events’ broader social and financial priorities. This assurance units out a framework for a long-term cooperative courting grounded in openness, environmental stewardship, and recognize for Métis pursuits. The IBA affirms that Venture building can give a contribution to long-term population well-being presen additionally reinforcing the joint accountability to offer protection to the condition lands, waters, and natural world. The events decide to decreasing environmental dangers presen upholding the values central to the Métis Events. 

The IBA additionally comprises particular constancy for sharing the advantages generated through the Venture, together with population funding tasks, contracting and trade building alternatives, coaching and occupation pathways, designated methods of monetary participation, and alternatives for the Métis Events and their electorate to take part in environmental tracking.  

In combination the constancy within the IBA replicate a joint perceptible for collaboration and identify a framework during which Denison and the Métis Events can paintings aspect through aspect to safeguard that the Venture contributes to a sustainable and resilient generation for Métis electorate in Saskatchewan.

Exploration Oath

The Exploration Oath extends the cooperative and mutually recommended courting between Denison and the Métis Events past the Venture and covers all of Denison’s alternative majority owned and operated exploration and analysis initiatives inside of MN–S NR-1 and MN–S NR-3.  The Métis Events consent to Denison’s exploration and analysis actions within the area and Denison commits to backup the Métis Events’ pursuits in population building, advantages sharing, environmental coverage and tracking, and sustainable and predictable session and engagement processes.

Thru this cooperative means, the events attempt to safeguard Denison’s generation initiatives are definitely complicated in the course of the exploration and analysis levels in a fashion this is knowledgeable through and is absolutely respectful of the rights, wisdom, and pursuits of the Métis Events.

About Denison

Denison is a eminent uranium mining, building, and exploration corporate with pursuits targeted within the Athabasca Basin area of northern Saskatchewan, Canada. Denison has an efficient 95% pastime in its flagship Wheeler River Uranium Venture, which is the biggest undeveloped uranium mission within the infrastructure lavish japanese portion of the Athabasca Basin area of northern Saskatchewan.

In mid-2023, the Phoenix feasibility find out about used to be finished for the Phoenix store as an ISR mining operation, and an replace to the prior to now ready 2018 Pre-Feasibility Learn about used to be finished for Wheeler River’s Gryphon store as a traditional underground mining operation. In line with the respective research, each deposits have the prospective to be aggressive with the bottom price uranium mining operations on this planet. Allowing efforts for the deliberate Phoenix ISR operation commenced in 2019 and are nearing of completion with kindness in July 2025 of the Venture’s EA through the Province of Saskatchewan and graduation in October 2025 of the Canadian Nuclear Protection Fee Hearings for Federal kindness of the EA and mission building license. The Listening to is scheduled to proceed and be concluded all through the life of December 8, 2025.

Denison’s pursuits in Saskatchewan additionally come with a 22.5% possession pastime within the McClean Puddle Joint Project (“MLJV”), which contains unmined uranium deposits (with mining at McClean North store by the use of the MLJV’s SABRE mining form having commenced in July 2025 the usage of the MLJV’s SABRE mining form) and the McClean Puddle uranium mill (these days using a portion of its approved capability to procedure the ore from the Cigar Puddle mine underneath a toll milling assurance), plus a 25.17% pastime within the Midwest Joint Project Midwest Major and Midwest A deposits, and a 70.55% pastime within the Tthe Heldeth Túé (“THT”) and Huskie deposits at the Waterbury Puddle Component. The Midwest Major, Midwest A, THT and Huskie deposits are situated inside of 20 kilometres of the McClean Puddle mill. Taken in combination, Denison has direct possession pursuits in homes masking ~384,000 hectares within the Athabasca Basin area.

Moreover, via its 50% possession of JCU (Canada) Exploration Corporate, Restricted (“JCU”), Denison holds pursuits in diverse uranium mission joint ventures in Canada, together with the Millennium mission (JCU, 30.099%), the Kiggavik mission (JCU, 33.8118) and Christie Puddle (JCU, 34.4508%).

In 2024, Denison celebrated its seventieth day in uranium mining, exploration, and building, which started in 1954 with Denison’s first acquisition of mining claims within the Elliot Puddle area of northern Ontario.

Observe Denison on X @DenisonMinesCo

About Métis Family–Saskatchewan

Métis Family–Saskatchewan is constructed on a bottom of Métis id, tradition, values and language. Empowered through the Métis electorate of Saskatchewan, MN–S works to proceed Métis rights and improve capability. MN–S represents the political, socioeconomic, cultural and academic pursuits of Métis within the province via an elected consultant device at native, regional and provincial ranges.

CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING STATEMENTS 

Positive data contained on this information loose constitutes ‘forward-looking data’, inside the that means of the appropriate United States and Canadian law, regarding the trade, operations and fiscal efficiency and situation of Denison. Usually, those forward-looking statements can also be known through the usefulness of forward-looking terminology akin to ‘attainable’, ‘plans’, ‘expects’, ‘finances’, ‘scheduled’, ‘estimates’, ‘forecasts’, ‘intends’, ‘anticipates’, or ‘believes’, or the negatives and/or diversifications of such phrases and words, or situation that sure movements, occasions or effects ‘would possibly’, ‘may just’, ‘would’, ‘would possibly’ or ‘will’ ‘be taken’, ‘happen’ or ‘be accomplished’.

Specifically, this information loose accommodates forward-looking data relating Denison’s stream intentions and targets with recognize to, and constancy i’m ready forth in the IBA and Exploration Oath; building and enlargement plans and targets for the Venture; and expectancies referring to its three way partnership possession pursuits and the endurance of its pledges with its companions and 3rd events.

Ahead searching statements are in line with the reviews and estimates of control as of the era such statements are made, and they’re topic to recognized and unknown dangers, uncertainties and alternative components that can motive the latest effects, stage of job, efficiency or achievements of Denison to be materially other from the ones expressed or implied through such forward-looking statements. Denison believes that the expectancies mirrored on this forward-looking data are affordable however incorrect word can also be for the reason that those expectancies will end up to be correct and effects would possibly range materially from the ones expected on this forward-looking data. For a dialogue in recognize of dangers and alternative components that would affect ahead searching occasions, please please see the criteria mentioned in Denison’s Annual Data Mode dated March 28, 2025 or next quarterly monetary studies underneath the heading ‘Possibility Elements’. Those components aren’t, and must no longer be construed as being, exhaustive.

Accordingly, readers must no longer playground undue reliance on forward-looking statements. The forward-looking data contained on this information loose is expressly certified through this cautionary observation. Any forward-looking data and the suppositions made with recognize thereto speaks best as of the era of this information loose. Denison does no longer adopt any legal responsibility to publicly replace or revise any forward-looking data later the era of this information loose to evolve such data to latest effects or to adjustments in Denison’s expectancies except for as in a different way required through appropriate law.

SOURCE Denison Mines Corp.