Rottenstone Gold Inc. Announces the Proposed Acquisition of a Precious Metals Royalty and Affirms its Intention to Reposition as Silver Royalties

Rottenstone Gold Inc. Announces the Proposed Acquisition of a Precious Metals Royalty and Affirms its Intention to Reposition as Silver Royalties Announcement of Royalty Purchase Agreement and Termination of Prior Agreement The Corporation is pleased to announce that it has entered into a binding purchase agreement dated September 1, 2026 (the " Great Bear Royalty Agreement ") with a non-arm's-length party (the " Vendor ") wherein the Issuer intends to acquire one of the royalties previously reported upon in its prior news release of December, 10, 2025, specifically as relates to a royalty further below described in this news release (the " Royalty Acquisition ")(see below section, 'Proposed Royalty Acquisition'). In tandem with the same, the Corporation also affirms particulars of other below described corporate intentions. The Corporation further reports that the parties to its previously announced binding agreement dated December 9, 2025 (the " Previous Agreement ") did not extend the closing date of the Previous Agreement beyond August 31, 2026 (see Issuer news releases of December 10, 2025 and July 3, 2026) and as such, the Previous Agreement automatically terminated as at August 31, 2026 pursuant to its terms. Among other benefits perceived by the Issuer with respect to the above, the Corporation believes the Great Bear Royalty Agreement achieves certain near-term advantages over the Previous Agreement, including as relates to a more streamlined and potentially expeditious closing of the Royalty Acquisition while still advancing the generality of the items set forth in this news release. Proposed Royalty Acquisition Under the terms of the Great Bear Royalty Agreement, the Issuer intends to acquire a royalty having Kinross Gold Corporation (" Kinross " or the " Operator ") as its current counterparty, being more specifically a royalty interest on certain areas related to the Great Bear Project in Ontario, Canada (the " Great Bear Royalty "), as operated by Kinross, represented by a 0.75% NSR covering approximately 570 ha of Kinross-held mining leases and a further approximate 1,241 ha of mining claims of Kinross-operated area. The Great Bear Royalty originated through an August 2018 option agreement involving 1544230 Ontario Inc., as then-optionor, alongside successor events and assignments thereafter associated. As above described, Kinross is now the operator of the royalty coverage area associated with the Great Bear Royalty. The aforementioned Great Bear Royalty is derived from underlying agreement(s) operated by a third-party. Accordingly, the Issuer is not disclosing any current mineral resources or mineral reserves in respect of the Operator's project in this news release or otherwise. Readers may refer to the Operator's public disclosures for available information regarding the underlying project/area. Terms and Related Party The Issuer intends to acquire the Great Bear Royalty on an all-stock basis, with the agreement underlying the Royalty Acquisition entered into with a party related to the Issuer. As such, and among other measures, a fair market value (" FMV ") of the Great Bear Royalty was independently determined and supported through a recent comprehensive valuation report dated August 7, 2026, which was prepared by an arm's-length valuation firm having expertise in such matters. To the same, and having consideration to its last traded market price, the Issuer plans to issue 18,064,516 common shares (the " Consideration Shares ") to satisfy the FMV of the Great Bear Royalty. As at the date hereof, the Issuer has 29,986,400 common shares issued and outstanding. No finder's fees are payable in connection with the Royalty Acquisition, nor with any other matter discussed herein. The transaction proposed (which remains subject to certain conditions) and matters herein discussed have been approved by the independent Directors of the Issu...