Radisson Mining Resources Inc. (TSX-V: RDS) (OTCQX: RMRDF) is pleased to announce the closing of its previously announced “bought deal” private placement pursuant to which the Company issued a total of 41,667,000 Class A common shares of the Company  at a price of $0.60 per Share, for gross proceeds of $25,000,200.

The Offering was completed pursuant to an underwriting agreement dated October 7, 2025 between the Company and a syndicate of underwriters led by Cormark Securities Inc. In consideration for the services provided to the Company in connection with the Offering, the Underwriters received a cash commission equal to $1,500,012, representing 6% of the gross proceeds of the Offering.

The Company intends to use the net proceeds from the Offered Shares for ongoing exploration and advancement of the O’Brien gold project and for general corporate purposes.

The Offered Shares were issued pursuant to the listed issuer financing exemption under Part 5A of National Instrument 45-106 – Prospectus Exemptions, as amended by Coordinated Blanket Order 45-935 – Exemptions from Certain Conditions of the Listed Issuer Financing Exemption. The Offered Shares sold pursuant to the Offering will not be subject to a hold period in Canada pursuant to applicable Canadian securities laws.

An amended offering document related to the Offering and the use by the Company of the Listed Issuer Financing Exemption can be accessed under the Company’s profile on SEDAR+ at www.sedarplus.ca and on the Company’s website at www.radissonmining.com.

The Offering remains subject to the final acceptance of the TSX Venture Exchange.

This news release does not constitute an offer to sell or a solicitation of an offer to buy nor shall there be any sale of any of the securities in any jurisdiction in which such offer, solicitation or sale would be unlawful, including any of the securities in the United States. The securities described herein have not been and will not be registered under the U.S. Securities Act, or any of the securities laws of any state of the United States, and are not being offered or sold within the United States or to, or for the account or benefit of, U.S. persons except pursuant to an exemption from the registration requirements of the U.S. Securities Act and any applicable securities laws of any state of the United States.

Qualified Persons 

Disclosure of a scientific or technical nature in this news release was prepared under the supervision of Mr. Richard Nieminen, P.Geo, a geological consultant for the Company and a Qualified Person for purposes of National Instrument 43-101 – Standards of Disclosure for Mineral Projects. Mr. Nieminen is independent of the Company and the O’Brien Gold Project.

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 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 0.58 million ounces (2.20 million tonnes at 8.2 g/t Au), with additional Inferred Mineral Resources estimated at 0.93 million ounces (6.67 million tonnes at 4.4 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, 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.