Mr. Matt Manson reports

RADISSON ANNOUNCES C$57 MILLION STRATEGIC INVESTMENT BY AGNICO EAGLE TO SUPPORT AN ADVANCED UNDERGROUND EXPLORATION PROGRAM

Radisson Mining Resources Inc. has entered into a subscription agreement with Agnico Eagle Mines Ltd., pursuant to which Agnico Eagle has agreed to subscribe for and purchase 53.42 million units of the company at a price of $1.07 per unit for aggregate gross proceeds of $57,159,400. Following completion of the investment, Agnico Eagle will beneficially own approximately 10.45 per cent of the issued and outstanding common shares of the company on a non-diluted basis and approximately 14.90 per cent on a partially diluted basis.

The investment will support the commencement of an advanced underground exploration program at Radisson's 100-per-cent-owned O'Brien gold project, located in the Abitibi region of Quebec. 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 continuing 140,000-metre stepout drill program, fully financed 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 and one-half of one common share purchase warrant. The subscription price of $1.07 per unit represents a 6-per-cent premium to the company's closing share price on Aug. 21, 2026, and a 19-per-cent premium to its 20-day volume-weighted average price (VWAP). Each warrant is exercisable for a period of 60 months at a price of $1.39 per common share and is subject to acceleration after 24 months if the VWAP of the common shares exceeds $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 finders' fees will be payable in connection with the investment.

Matt Manson, president and chief executive officer, stated: "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 stepouts 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 per cent (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 Dec. 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-per-cent 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 Resources Inc.

Radisson is a gold exploration company focused on its 100-per-cent-owned O'Brien gold project, located in the Bousquet-Cadillac mining camp along the world-renowned Larder Lake/Cadillac Break in Abitibi, Quebec. A July, 2025, preliminary economic assessment 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 630,000 ounces (3.49 million tonnes at 5.59 grams per tonne gold), with additional inferred mineral resources estimated at 1.69 million ounces (10.37 million tonnes at 5.08 grams per tonne gold). Please see the National Instrument 43-101 "O'Brien Gold Project Technical Report and Preliminary Economic Assessment, Quebec, 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 SEDAR+ for further details and assumptions relating to the O'Brien gold project.

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