Tesoro Minerals Corp. Announces Update on Acquisition of Rumichacha and Cerro Macho Properties, Peru, and $500,000 Non-Brokered Financing

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VANCOUVER, BC / ACCESS Newswire / December 22, 2025 / Tesoro Minerals Corp. (“Tesoro” or the “Company“) is pleased to provide an update on its previously announced acquisition of the Rumichacha and Cerro Macho mineral properties (the “Property“) located in Peru (see news release dated July 8, 2025) and to announce a $500,000 non-brokered private placement financing to support ongoing exploration and corporate activities.

Update on Acquisition of Rumichacha and Cerro Macho

Tesoro continues to advance the acquisition of a 100% interest in the Rumichacha and Cerro Macho properties, which are located in a prospective mineral district in Peru with geological characteristics favourable for high sulphidation, epithermal gold mineralization. The property is under-explored and has never been drilled.

Since the announcement in July, 2025, the Company has:

• Completed a NI-43-101 technical report and verified the prospectivity for high-sulphidation, epithermal gold mineralization.

• Received a title opinion verifying the tenure of the acquired acquisitions

• Continued compilation and review of historical exploration data

• Initiated planning for a phased exploration program, subject to closing of the transaction

• Advancement of the Rumichacha and Cerro Macho properties including initial fieldwork, compilation, mapping & sampling and Induced Polarization ground geophysical surveys

• Community and Social Engagement

• General working capital and corporate purposes

The Rumichacha and Cerro Macho properties are considered early-stage exploration assets with potential for discovery based on historical sampling, alteration, and structural setting. The Company believes these assets align well with Tesoro’s strategy of acquiring and advancing high-quality exploration projects in underexplored yet mining-friendly jurisdictions.

The acquisition remains subject to customary closing conditions, including regulatory approvals and final documentation. The Company will provide further updates as milestones are achieved.

$500,000 Non-Brokered Private Placement Financing

Tesoro also announces a non-brokered private placement financing of up to $500,000 (the “Financing“) subject to regulatory approval. The Financing will consist of the issuance of 6,250,000 common share at a price of $0.08 per share. Closing of the financing will be subject to receiving TSX-V approval of the acquisition of the Property.

Gross proceeds from the Financing will be used for:

Finder’s fees may be payable in connection with the Financing, subject to regulatory approval. All securities issued will be subject to a statutory hold period in accordance with applicable securities laws.

About Tesoro Minerals Corp.

Qualified Person

The technical elements of this news release have been approved by Mr. Scott McLean, P.Geo. (PGO), CEO and Director of Tesoro Minerals Corp., and a Qualified Person under National Instrument 43-101.

About Tesoro Minerals Corp.

Tesoro Minerals Corp. (TSX‑V:TES) is a junior exploration company focused on discovering and advancing high‑quality precious‑ and base‑metal projects in Peru. The Company leverages strong in‑country expertise and a disciplined, value‑accretive approach to project acquisition and exploration.

Cautionary Note on Forward-Looking Information

Except for statements of historical fact contained herein, the information in this news release constitutes “forward-looking information” within the meaning of Canadian securities law. Such forward-looking information may be identified by words such as “plans”, “proposes”, “estimates”, “intends”, “expects”, “believes”, “may”, “will” and include without limitation, statements regarding estimated capital and operating costs, expected production timeline, benefits of updated development plans, foreign exchange assumptions and regulatory approvals. There can be no assurance that such statements will prove to be accurate; actual results and future events could differ materially from such statements. Factors that could cause actual results to differ materially include, among others, metal prices, competition, risks inherent in the mining industry, and regulatory risks. Most of these factors are outside the control of the Company. Investors are cautioned not to put undue reliance on forward-looking information. Except as otherwise required by applicable securities statutes or regulation, the Company expressly disclaims any intent or obligation to update publicly forward-looking information, whether as a result of new information, future events or otherwise.

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 release.

Further information contact:

Scott McLean
President and CEO
Tesoro Minerals Corp.
Tel: (705) 669-1777

SOURCE: Tesoro Minerals Corp.

View the original press release on ACCESS Newswire