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THIS RESTRICTION MAY CONSTITUTE A VIOLATION OF U.S. SECURITIES LAW. Guanajuato Silver Announces Closing of Bought Deal Public Offering for Gross Proceeds of C$43.5 Million

Financings

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THIS NEWS RELEASE IS NOT FOR DISTRIBUTION IN THE UNITED STATES. ANY FAILURE TO COMPLY WITH

THIS RESTRICTION MAY CONSTITUTE A VIOLATION OF U.S. SECURITIES LAW.

Guanajuato Silver Announces Closing of Bought Deal Public Offering

for Gross Proceeds of C$43.5 Million

October 9, 2025 – Vancouver, British Columbia – Guanajuato Silver Company Ltd. (the “ Company” or

“GSilver”) (TSXV:GSVR), a growing Mexican-based precious metals producer, is pleased to announce that

it has closed its previously announced “bought deal” public offering of 87,000,000 units of the Company

(the "Units") at a price of C$0.50 per Unit (the "Offering Price") for gross proceeds of C$43,500,000 (the

“Offering”). The Offering was conducted by Canaccord Genuity Corp. and Red Cloud Securities Inc.

(together, the "Underwriters"), as co-lead underwriters and joint bookrunners.

Each Unit consist s of one common share of the Company (a " Common Share ") and one -half of one

common share purchase warrant (each whole common share purchase warrant, a " Warrant"). Each

Warrant entitles the holder thereof to acquire one Common Share of the Company at a price of C$0.65 at

any time before 5:00 p.m. (Vancouver time) on October 9, 2028.

The net proceeds of the Offering will be used for sustaining and development capital for the Company’s

four operating mines in Mexico, working capital and general corporate purposes.

The Units were offered by way of a prospectus supplement dated October 3, 2025 (the “ Prospectus

Supplement”) to the Company’s short form base shelf prospectus dated August 21, 2024 (the “Base Shelf

Prospectus”) to purchasers in each of the provinces and territories of Canada (other than Québec) and

were also offered by way of private placement in the United States.

In connection with the Offering, the Company has granted the Underwriters an option (the "Underwriter

Option") to purchase, on the same terms and conditions of the Offering, up to an additional 13,050,000

Units issued in connection with the Offering. The Underwriter Option is exercisable, in whole or in part,

by the Underwriters at any time until and including November 8, 2025. The maximum gross proceeds

raised under the Offering would be C$50,025,000 in the event the Underwriter Option is fully exercised.

No new insiders, or control persons, were created as a result of the Offering.

In consideration for their services in connection with the Offering, the Underwriters received a total cash

commission of C$2,595,000 and were each issued 2,587,500 non-transferable warrants of the Company

(the "Broker Warrants"). Each Broker Warrant entitles the holder thereof to purchase one Common Share

at a price of C$0.50 at any time before 5:00 p.m. (Vancouver time) on October 9, 2028.

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

securities in the United States. The securities offered have not been and will not be registered under the

United States Securities Act of 1933, as amended (the "1933 Act"), or any state securities laws and may

not be offered or sold within the United States or to or for the account or benefit of a U.S. person (as

defined in Regulation S under the 1933 Act) unless registered under the 1933 Act and applicab le state

securities laws or an exemption from such registrations are available. No public offering of securities is

being made in the United States. This press release shall not constitute an offer to sell or the solicitation

of an offer to buy, nor shall there be any sale of these securities, in any jurisdiction in which such offer,

solicitation or sale would be unlawful.

About Guanajuato Silver

GSilver is a precious metals producer engaged in reactivating past producing silver and gold mines in

central Mexico. The Company produces silver and gold concentrates from the El Cubo Mine, Valenciana

Mines Complex, and the San Ignacio Mine; all three mines are located within the state of Guanajuato,

which has an established 480-year mining history. Additionally, the Company produces silver, gold, lead,

and zinc concentrates from the Topia mine in northwestern Durango. With four operating mines and

three processing facilities, Guanajuato Silver is one of the fastest growing silver producers in Mexico.

ON BEHALF OF THE BOARD OF DIRECTORS

"James Anderson"

Chairman and CEO

For further information regarding Guanajuato Silver Company Ltd., please contact:

JJ Jennex, Gerente de Comunicaciones, T: 604 723 1433

E: [email protected]

GSilver.com

Guanajuato Silver Bullion Store

Please visit our Bullion Store, where Guanajuato Silver coins and bars can be purchased.

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.

Forward-Looking Statements

This news release contains certain forward -looking statements and information, which relate to future

events or future performance including, but not limited to, the proposed use of the net proceeds

therefrom; any exercise of the Underwriters’ Option; GSilver’s growth; and GSilver’s status as one of the

fasting growing silver mining Company in Mexico.

Such forward-looking statements and information reflect management's current beliefs and are based

on information currently available to and assumptions made by the Company; which assumptions, while

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considered reasonable by the Company, are inherently subject to significant operational, business,

economic and regulatory uncertainties and contingencies. These assumptions include: the potential

quantity, grade and metal content of the mineralized material at El Cubo and San Ignacio, the

geotechnical and metallurgical characteristics of such material conforming to sampled results and

metallurgical performance; available tonnage of mineralized material to be mined and processed;

resource grades and recoveries; assumptions and discount rates being appropriately applied to

production estimates; prices for silver, gold and other metals remaining as estimated; currency exchange

rates remaining as estimated; availability of funds for the Company's projects and to satisfy current

liabilities and obligations including debt repayments; capital, decommissioning and reclamation

estimates; prices for energy inputs, labour, materials, supplies and services (including transportation)

and inflation rates remaining as estimated; no labour-related disruptions; no unplanned delays or

interruptions in scheduled construction and production; all necessary permits, licenses and regulatory

approvals are received in a timely manner; and the ability to comply with environmental, health and

safety laws. The foregoing list of assumptions is not exhaustive.

Readers are cautioned that such forward-looking statements and information are neither promises nor

guarantees, and are subject to risks and uncertainties that may cause future results, level of activity,

production levels, performance or achievements of GSilver to differ materially from those expected

including, but not limited to, market conditions, availability of financing, currency rate fluctuations, high

inflation and interest rates, geopolitical conflicts including wars, actual results of exploration,

development and production activities, actual grades and recoveries of silver, gold and other metals from

the Company’s existing mines including El Cubo, Pinguico, San Ignacio, VMC and Topia, availability of

third party mineralized material for processing, unanticipated geological or structural formations and

characteristics, environmental risks, future prices of gold, silver and other metals, operating risks,

accidents, labor issues, equipment or personnel delays, delays in obtaining governmental or regulatory

approvals and permits, inadequate insurance, and other risks in the mining industry. There are no

assurances that GSilver will be able to continue to increase production, tonnage milled and recoveries

rates, improve grades and reduce costs at El Cubo, Pinguico, San Ignacio, VMC and/or Topia to process

mineralized materials to produce silver, gold and other concentrates in the amounts, grades, recoveries,

costs and timetable anticipated. In addition, GSilver’s decision to process mineralized material from El

Cubo, Pinguico, San Ignacio, VMC and Topia is not based on a feasibility study of mineral reserves

demonstrating economic and technical viability and therefore is subject to increased uncertainty and risk

of failure, both economically and technically. Mineral resources and mineralized material that are not

Mineral Reserves do not have demonstrated economic viability, are considered too speculative

geologically to have the economic considerations applied to them, and may be materially affected by

environmental, permitting, legal, title, socio-political, marketing, and other relevant issues. There are no

assurances that the Company's projected grades of gold and silver at El Cubo and San Ignacio and the

anticipated level of production therefrom will be realized. In addition, there are no assurances that the

Company will meet its production forecasts or generate the anticipated cash flows from operations to

satisfy its scheduled debt payments or other liabilities when due or meet financial covenants to which

the Company is subject or to fund its exploration programs and corporate initiatives as planned. There is

also uncertainty about impact of any future global pandemic, ongoing global conflicts, elevated inflation

and interest rates and the impact they will have on the Company's operations, supply chains, ability to

access mining projects or procure equipment, contractors and other personnel on a timely basis or at all

and economic activity in general. Accordingly, readers should not place undue reliance on forward-

looking statements or information. All forward-looking statements and information made in this news

release are qualified by these cautionary statements and those in our continuous disclosure filings

available on SEDAR+ at www.sedarplus.ca including the Company’s most recently filed annual

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information form. These forward-looking statements and information are made as of the date hereof

and the Company does not assume any obligation to update or revise them to reflect new events or

circumstances save as required by law.