Radisson receives C$57 million strategic investment from Agnico Eagle

Rouyn-Noranda, Quebec--(Newsfile Corp. - August 24, 2026) - Radisson Mining Resources Inc. (TSXV: RDS) (OTCQX: RMRDF) ("Radisson" or the "Company") is pleased to announce that it has entered into a subscription agreement with Agnico Eagle Mines Limited ("Agnico Eagle"), pursuant to which Agnico Eagle has agreed to subscribe for and purchase 53,420,000 units of the Company (the " Units ") at a price of C$1.07 per Unit for aggregate gross proceeds of C$57,159,400 (the " Investment "). Following completion of the Investment, Agnico Eagle will beneficially own approximately 10.45% of the issued and outstanding Common Shares of the Company on a non-diluted basis and approximately 14.90% on a partially diluted basis.

The Investment will support the commencement of an advanced underground exploration program (the " Program ") at Radisson's 100%-owned O'Brien Gold Project (" O'Brien " or the " Project ") located in the Abitibi region of Québec. The Program represents the next phase in the advancement of O'Brien and is intended to provide the geological, geotechnical and operational information required to evaluate mining options and future development scenarios. The Program is expected to include the development of an access ramp, related underground and surface mine infrastructure, and water management facilities. Engineering and permitting work in respect of the Program will commence immediately. At the same time, Radisson will continue its ongoing 140,000-metre step-out drill program, fully-funded from existing cash resources, which continues to demonstrate significant growth potential in the Project's mineral resources.

Each Unit consists of one Class A common share (a " Common Share ") and one-half of one Common Share purchase warrant (each whole warrant, a " Warrant "). The subscription price of C$1.07 per Unit represents a 6% premium to the Company's closing share price on August 21, 2026 and a 19% premium to its 20-day volume weighted average price (" VWAP "). Each Warrant is exercisable for a period of 60 months at a price of C$1.39 per Common Share and is subject to acceleration after 24 months if the VWAP of the Common Shares exceeds C$1.85 for the applicable 20-consecutive-trading-day period. The private placement will be completed on a non-brokered basis and no commissions or finder's fees will be payable in connection with the Investment.

Matt Manson, President and CEO: "We are very happy to welcome Agnico Eagle as a significant shareholder for the next stage of exploration and development at the O'Brien Gold Project. This is a milestone step for Radisson. The Advanced Underground Exploration Program that will now commence is designed to extend our understanding of potential mining conditions at O'Brien, including the continuity of mineralization, the geotechnical setting, potential mining methods, and processing criteria. It also establishes a development schedule for O'Brien. As this underground work advances, our ongoing 140,000-metre surface drill program of exploration step-outs will continue as planned, funded from our existing cash resources. Recent results have indicated extensive gold mineralization with good continuity beneath the former O'Brien mine and the current mineral resources to at least 1.9 kilometres depth. In May of this year, we announced our intention to extend our drilling ambition to 2.5 kilometres depth (see Radisson news release dated May 28, 2026 ). Now, this investment by Agnico Eagle will fund the first modern underground access at O'Brien, which will assist us in developing the Project's full potential."

On Closing of the Investment, the Company and Agnico Eagle will enter into an investor rights agreement (" IRA ") pursuant to which Agnico Eagle will be granted certain rights, provided that it maintains certain ownership thresholds, including: (i) the right to nominate one person (and in the case of an increase in the size of the Company's Board of Directors to eight or more directors, two persons) to the Company's Board of Directors; and (ii) the right to participate in certain equity offerings in order to maintain or acquire up to the greater of Agnico Eagle's then-current ownership interest and an ownership interest of 14.9% (on a partially-diluted basis) in the Company, and a separate top-up right in respect of certain dilutive issuances permitting Agnico Eagle to maintain its then-current ownership interest (on a partially-diluted basis) in the Company. In addition, the IRA will also provide for certain restrictions through to December 31, 2028 on specified transactions involving the Company's mineral properties, including dispositions and certain royalty, stream, offtake and secured financing transactions, and thereafter a 60-day advance notice right in respect of such transactions for so long as Agnico Eagle maintains at least a 5.0% ownership interest in the Company (on a partially-diluted basis). For certainty, the foregoing restrictions and notice right will not apply to any change of control transaction involving the Company.

Closing is subject to customary conditions for a transaction of this nature, including approval of the TSX Venture Exchange.

About Radisson Mining

Radisson is a gold exploration company focused on its 100% owned O'Brien Gold Project, located in the Bousquet-Cadillac mining camp along the world-renowned Larder-Lake-Cadillac Break in Abitibi, Québec. A July 2025 PEA described a low cost and high value project with an 11-year mine life and significant upside potential based on the use of existing regional infrastructure. Indicated Mineral Resources are estimated at 0.63 Moz (3.49 Mt at 5.59 g/t Au), with additional Inferred Mineral Resources estimated at 1.69 Moz (10.37 Mt at 5.08 g/t Au). Please see the NI 43-101 "O'Brien Gold Project Technical Report and Preliminary Economic Assessment, Québec, Canada" effective June 27, 2025, Radisson's news release dated March 2, 2026 "With Step-Out Drilling Continuing, Radisson Demonstrates Meaningful Resource Growth at O'Brien with an Updated Mineral Resource Estimate" and other filings made with Canadian securities regulatory authorities available at www.sedarplus.ca for further details and assumptions relating to the O'Brien Gold Project. For more information on Radisson, visit our website at www.radissonmining.com or contact:

Matt Manson President and CEO 416.618.5885 mmanson@radissonmining.com

Kristina Pillon Manager, Investor Relations 604.908.1695 kpillon@radissonmining.com

NEITHER THE TSX VENTURE EXCHANGE NOR ITS REGULATION SERVICES PROVIDER (AS THAT TERM IS DEFINED IN THE POLICIES OF THE TSX VENTURE EXCHANGE) ACCEPTS RESPONSIBILITY FOR THE ADEQUACY OR ACCURACY OF THIS PRESS RELEASE.

Forward-Looking Statements

This news release contains "forward-looking information" within the meaning of applicable Canadian securities legislation. Forward-looking information in this news release includes, but is not limited to, statements regarding: completion and timing of the Investment; satisfaction of the conditions to closing, including approval of the TSX Venture Exchange; the issuance of the Units and Warrants and Agnico Eagle's resulting ownership interest in the Company; the entering into and operation of the investor rights agreement, including the participation, top-up, and board nomination rights, the restrictions applicable to specified transactions involving the Company's mineral properties; the commencement, scope, timing and advancement of the Program, including engineering, permitting, ramp development, related surface infrastructure and water management facilities; the allocation and use of the proceeds of the Investment; the continuation and results of the Company's ongoing drill program; the potential growth of the Project's mineral resources; and the evaluation and potential development of O'Brien, including potential development scenarios involving existing regional infrastructure.

Forward-looking information is based on assumptions and estimates that management considers reasonable as of the date of this news release, including assumptions regarding the satisfaction of closing conditions, receipt of required regulatory and Exchange approvals, the availability of permits and other authorizations, project schedules and costs, geological and technical results, commodity prices, access to labour, equipment and services, and the Company's ability to execute its planned exploration and development activities. Forward-looking information is subject to known and unknown risks, uncertainties and other factors that may cause actual results to differ materially from those expressed or implied, including the risk that the Investment is not completed on the terms or timing currently contemplated or at all; that required approvals or permits are delayed or not obtained; that the Program or use of proceeds changes; that actual costs, schedules, geological, geotechnical, metallurgical or other technical results differ from expectations; risks inherent in mineral exploration and development; commodity price and capital market volatility; changes in laws and regulations; and other risks described in the Company's public disclosure. Although the Company believes the assumptions underlying such forward-looking information are reasonable, no assurance can be given that they will prove correct. Readers should not place undue reliance on forward-looking information. The Company does not undertake to update or revise any forward-looking information except as required by applicable law.

Please refer to the "Risks and Uncertainties Related to Exploration" and the "Risks Related to Financing and Development" sections of the Company's Management's Discussion and Analysis dated April 23, 2026 for the year ended December 31, 2025 available electronically on SEDAR+ at www.sedarplus.ca . All forward-looking statements contained in this press release are expressly qualified by this cautionary statement.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this news release. No stock exchange, securities commission or other regulatory authority has approved or disapproved the information contained herein.

To view the source version of this press release, please visit https://www.newsfilecorp.com/release/310988

TMX Newsfile

August 24, 2026 - 3:30 AM PDT

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