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TES.V ·

Tesoro Minerals Closes C$1 Million Private Placement

Financings

1005, 409 Granville Street Vancouver, BC, V6C 1A5

www.tesorominerals.com

For Immediate Release September 23, 2026

Tesoro Minerals Closes C$1 Million Private Placement

“Not for distribution to United States newswire services or for dissemination in the United States.”

Vancouver, BC – September 23, 2026– Tesoro Minerals Corp. (TSXV: TES) (“Tesoro” or

the “Company”) is pleased to announce that it has closed its previously announced non-brokered

private placement (the “Offering”), issuing an aggregate of 10,000,000 common shares (each

a “Share”) at a price of $0.10 per Share for aggregate gross proceeds of $1,000,000. All amounts

are in Canadian dollars.

The Offering was originally announced on September 3, 2026, for gross proceeds of up to

$600,000. In response to investor demand, the Company announced an increase to $750,000 on

September 14, 2026. Continued investor interest prompted a further increase to $1,000,000,

announced later that same day.

“We’re grateful for the support of our new and existing investors. These funds will support the

next steps at Rumichaca and Cerro Macho, including initial exploration work and community

engagement,” said Scott McLean, President and CEO of Tesoro.

In connection with the Offering, the Company paid aggregate cash finder’s fees of $44,100 to

Haywood Securities Inc. (“Haywood”), representing 6% of the gross proceeds received from

subscribers introduced to the Company by Haywood.

Use of Proceeds

The net proceeds from the Offering are expected to be used for the following purposes:

• Advancement of the Rumichaca and Cerro Macho properties in Peru, including initial

fieldwork, data compilation, geological mapping and sampling, and induced polarization

(IP) ground geophysical surveys;

• Community and social engagement initiatives; and

• General working capital and corporate purposes.

The Company confirms that none of the proceeds of the Offering will be used for Investor

Relations Activities, as such term is defined in the policies of the TSX Venture Exchange

(“TSXV”), and no payments from such proceeds will be made to Non-Arm’s Length Parties of

the Company.

1005, 409 Granville Street Vancouver, BC, V6C 1A5

www.tesorominerals.com

All Shares issued pursuant to the Offering are subject to a four-month and one-day hold period,

expiring on January 24, 2027, in accordance with applicable securities laws and the policies of

the TSXV.

Related Party Transaction

Two insiders of the Company participated in the Offering, acquiring an aggregate of 150,000

Shares for aggregate consideration of $15,000. This participation constitutes a “related party

transaction” within the meaning of Multilateral Instrument 61-101– Protection of Minority

Security Holders in Special Transactions (“MI 61-101”). The Offering is exempt from the

formal valuation and minority shareholder approval requirements of MI 61-101 pursuant to

Sections 5.5(b) and 5.7(1)(b) thereof, as the Company is not listed on a specified market and

neither the value of the securities issued to, nor the consideration paid by, insiders exceeded

$2,500,000.

About Tesoro Minerals Corp.

Tesoro Minerals Corp. (TSXV: TES) is a junior exploration company focused on the discovery

and advancement of 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.

On behalf of Tesoro Minerals Corp.

Scott McLean

President and CEO

Tesoro Minerals Corp.

Tel: (705) 669-1777

www.tesorominerals.com

Cautionary Statement Regarding Forward-Looking Information

This news release contains “forward-looking information” within the meaning of applicable

Canadian securities legislation. Forward-looking information includes statements concerning the

completion, timing and terms of the Private Placement; the anticipated use of proceeds; the

Company's exploration plans and activities at its Rumichaca and Cerro Macho properties; and

the receipt of regulatory approvals.

1005, 409 Granville Street Vancouver, BC, V6C 1A5

www.tesorominerals.com

Forward-looking information is based on the Company's current expectations, assumptions,

estimates and beliefs and is subject to known and unknown risks and uncertainties. There can be

no assurance that the Private Placement will be completed on the terms described herein, or at

all, or that the Company will receive the anticipated proceeds. There can also be no assurance

that the Company's proposed exploration activities will proceed as planned or that such activities

will result in the discovery or advancement of mineral resources or mineral deposits.

Factors that could cause actual results to differ materially from those expressed or implied by

such forward-looking information include, without limitation, the Company's ability to complete

the Private Placement; the receipt of required regulatory approvals; changes in market

conditions; the availability of capital; fluctuations in metal prices; exploration and development

risks; uncertainties relating to geological information and exploration results; permitting and

regulatory risks; community and social relations; political, economic and legal conditions in

Peru; competition; and other risks and uncertainties described from time to time in the

Company's public disclosure documents available under the Company's profile on SEDAR+.

Readers are cautioned not to place undue reliance on forward-looking information. The

Company does not undertake to update or revise any forward-looking information, except as

required by applicable securities laws.

Not for distribution to United States newswire services or for dissemination in the United States

of America

This news release does not constitute an offer to sell or a solicitation of an offer to buy any

securities in the United States or to or for the account or benefit of U.S. Persons. The Shares have

not been and will not be registered under the United States Securities Act of 1933, as amended

(the “U.S. Securities Act”), or any state securities laws, and may not be offered or sold within

the United States or to U.S. Persons absent registration under the U.S. Securities Act and

applicable state securities laws or an applicable exemption from such registration requirements.

“United States” and “U.S. Person” have the meanings assigned to them in Regulation S under the

U.S. Securities Act.

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.