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Sierra Madre Announces Upsize of Private Placement to $19.5 Million with Investment from Eric Sprott

Financings

Sierra Madre Announces Upsize of Private Placement to

$19.5 Million with Investment from Eric Sprott

NOT FOR DISTRIBUTION TO UNITED STATES NEWSWIRE SERVICES OR

FOR DISSEMINATION IN THE UNITED STATES

Vancouver, British Columbia – July 21, 2025 – Sierra Madre Gold and Silver Ltd. (TSXV: SM)

(“Sierra Madre” or the “Company”) is pleased to announce an upsize to its previously announced

“best efforts” private placement. Under the amended terms, the Company will issue up to

27,858,000 units of the Company (each a “Unit”) at a price of $0.70 per Unit (the “Issue Price”)

for aggregate gross proceeds to the Company of up to $19,500,600 (the “Offering”).

Eric Sprott, through 2176423 Ontario Ltd ., a corporation beneficially owned by him, is expected

to participate in the Offering.

Beacon Securities Limited (“Beacon”) is acting as lead agent and sole bookrunner, on behalf of a

syndicate of agents including Canaccord Genuity Corp. (together with Beacon, the “ Agents”) in

connection with the Offering.

Each Unit will consist of one common share in the capital of the Company (a “Unit Share”) to be

issued pursuant to Part 5A of National Instrument 45-106 – Prospectus Exemptions (“NI 45-106”),

as amended and supplemented by Coordinated Blanket Order 45 -935 – Exemptions from Certain

Conditions of the Listed Issuer Financing Exemption (the “Listed Issuer Financing Exemption”),

and one half of one common share purchase warrant ( each whole warrant a “Warrant”) of the

Company. Each Warrant will entitle the holder thereof to acquire one common share (a “Warrant

Share”) at a price per Warrant Share of $0.85 for a period of 12 months from the date of issuance.

Subject to compliance with applicable regulatory requirements and in accordance with NI 45-106,

the Units will be offered for sale to purchasers resident in Canada, other than Quebec, pursuant to

the Listed Issuer Financing Exemption . The securities issued under the Listed Issuer Financing

Exemption to Canadian subscribers will not be subject to a hold period in Canada.

An amended and restated offering document dated July 18, 2025 related to the Offering will be

filed under the Company’s profile at www.sedarplus.ca and on the Company’s website at

www.sierramadregoldandsilver.com. Prospective investors should read this offering document

before making an investment decision.

The securities 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 U.S. state securities laws, and may not be

offered or sold in the “United States” (as such term is defined in Regulation S under the U.S.

Securities Act) unless registered under the U.S. Securities Act and applicable U.S. state securities

laws or an exemption from such registration is available. This news release shall not constitute an

offer to sell or the solicitation of an offer to buy nor shall there be any sale of the securities in any

jurisdiction in which such offer, solicitation or sale would be unlawful.

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The Offering is expected to close on or about July 24 , 2025, and is subject to the Company

receiving all necessary regulatory approvals, including the approval of the TSX Venture Exchange.

About Sierra Madre

Sierra Madre Gold and Silver Ltd. is a precious metals development and exploration company

focused on the Guitarra mine in the Temascaltepec mining district, Mexico, and the exploration

and development of its Tepic property in Nayarit, Mexico. The Guitarra mine is a permitted

underground mine, which includes a 500 t/d processing facility that operated until mid-2018 and

restarted commercial production in January 2025.

The +2,600 ha Tepic Project hosts low -sulphidation epithermal gold and silver mineralization

with an existing historic resource.

Sierra Madre´s management team has played key roles in managing the exploration and

development of silver and gold mineral reserves and mineral resources. Sierra Madre´s team of

professionals has collectively raised over $1 billion for mining companies.

On behalf of the board of directors of Sierra Madre Gold and Silver Ltd.,

“Alexander Langer”

Alexander Langer

President, Chief Executive Officer and Director

Contact:

[email protected]

778-820-1189

Cautionary Note Regarding Forward-Looking Information

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 news release.

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

Canadian securities legislation and statements that are based on the beliefs of management and

reflect the Company’s current expectations. When used in this press release, the words "estimate",

"project", "belief", "anticipate", "intend", "expect", "plan", "predict", "may" or "should" and the

negative of these words or such variations thereon or comparable terminology are intended to

identify forward-looking statements and information. Such statements and information reflect the

current view of the Company. Forward -looking statements and forward -looking information in

this press release include, but are not limited to, statements with respect to the timing and

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completion of the Offering, the use of proceeds of the Offering and the receipt of regulatory

approvals for the Offering. Risks and uncertainties may cause actual results to differ materially

from those contemplated in those forward -looking statements and information. By their nature,

forward-looking statements involve known and unknown risks, uncertainties and other factors

which may cause our actual results, performance or achievements, or other future events, to be

materially different from any future results, performance or achievements expressed or implied by

such forward -looking statements. The forward -looking information and forward -looking

statements contained in this press release are made as of the date of this press release, and the

Company does not undertake to update any forward -looking information or forward -looking

statements that are contained or referenced herein, except as may be required in accordance with

applicable securities laws. All subsequent written and oral forward -looking informat ion and

statements attributable to the Company or persons acting on its behalf is expressly qualified in its

entirety by this notice regarding forward-looking information and statements.