Rottenstone Gold Inc. Announces Proposed Acquisition of Royalties and Repositioning as Silver Royalties

Vancouver, British Columbia--(Newsfile Corp. - December 10, 2025) - Rottenstone Gold Inc. - (CSE: SK)  - ("Rottenstone Gold" or the "Corporation" or the "Issuer") is pleased to announce that it has entered into a binding agreement dated December 9, 2025 with non-arm's-length parties (the "Vendors") to acquire various royalty interests (the "Royalty Acquisition"), along with the announcement of other below described corporate intentions revolving around the same.

Acquisition of Royalties

Under the terms of the transaction, the Issuer intends to acquire numerous royalties on projects collectively operated by (1) Kinross Gold Corporation ("Kinross"), (2) SSR Mining Inc. ("SSR"), (3) NexGold Mining Corp. ("NexGold"), (4) Champion Iron Limited ("Champion"), (5) Orano Canada Inc. ("Orano") and (6) Cameco Corp. ("Cameco") (Kinross, SSR, NexGold, Champion, Orano and Cameco collectively, the "Operators").

The royalties and the Operators are:

1) A royalty interest (the "Great Bear Royalty") on certain areas of the Great Bear Project in Ontario, Canada operated by Kinross, represented by a 0.75% NSR covering approximately 570 ha of mining leases and approximately 1,241 ha of mining claims;

2) Certain royalty interests (the "Seabee Royalties") on certain areas of the Seabee Gold Project in Saskatchewan, Canada operated by SSR, represented by a 2% NSR covering approximately 8,873 ha of mineral dispositions and a 0.5% NSR covering approximately 2,832 ha of mineral dispositions.

3) Certain royalty interests (the "Goldboro Royalties") on certain areas of the Goldboro Gold Project in Nova Scotia, Canada operated by NexGold, represented by 2.0% GSRs covering approximately 10,848 ha of mineral dispositions.

4) A royalty interest (the "Bloom Lake East Royalty") on certain areas of the Bloom Lake East Iron Project in Labrador, Canada operated by Champion (and/or its subsidiary, Quebec Iron Ore), represented by a 1% GSR covering approximately 3,800 ha of mineral claims;

5) Certain royalty interests (the "Preston Royalties") on the Preston Uranium Project in Saskatchewan, Canada operated by Orano, represented by certain NSR royalty interests ranging from 1.4% to 2.0% covering approximately 49,635 ha of mineral dispositions; and

6) A royalty interest (the "WAB Royalty") on certain areas of a Western Athabasca Basin project in Saskatchewan, Canada operated by Cameco, represented by a 1% GSR covering approximately 5,859 ha of mineral dispositions;