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Sierra Madre Provides Update ON Proposed Definitive Acquisition of LA Guitarra

Mergers & Acquisitions

SIERRA MADRE PROVIDES UPDATE ON PROPOSED DEFINITIVE ACQUISITION OF

LA GUITARRA

Vancouver, British Columbia – December 28, 2022 – Sierra Madre Gold and Silver Ltd. (TSXV: SM) ("Sierra

Madre" or the "Company") is pleased to provide an update on its proposed acquisition (the “Acquisition”)

of the La Guitarra Silver-Gold Mine (“La Guitarra”). On May 25, 2022, Sierra Madre entered an arm´s length

definitive agreement with First Majestic Silver Corp. (" First Majestic") to acquire a 100% interest in the

39,714-hectare La Guitarra Silver-Gold property in the Temascaltepec mining district, Mexico. Details of

the Acquisition can be found here.

Earlier this month, shareholders voted in favour of a resolution to approve the proposed acquisition of all

the issued and o utstanding shares of La Guitarra Compañia Minera S.A. de C.V from Corporacion First

Majestic, S.A. de C.V. (“CFM”) in exchange for 69,063,076 common shares of the Company (the

“Consideration Shares”) at a deemed price of $0.65 per Consideration Share, having an aggregate value

of $44,890,999 (US$35 million) (the “ Transaction”). The ordinary resolution with respect to the

Transaction was approved by 99.99% of the votes cast by shareholders. The Transaction has been

Conditionally accepted by the TSX Venture Exchange (the “ Exchange”). Given the significance of this

Acquisition, Sierra Madre has been recently advised to receive Mexican antitrust approval prior to the

resumption of trading. Sierra Madre currently anticipates receiving this antitrust approval during Q1 of

2023.

Alexander Langer, CEO, states, “We are incredibly excited to close the acquisition of La Guitarra with the

support of our shareholders, First Majestic, and the Mexican authorities. The acquisition of La Guitarra

will provide near-term production and cash flow from the restart of the fully permitted mine and the 500

tonnes-per-day mill while we continue to explore and develop the Tepic and La Tigra properties as part of

our multi-pronged strategy.”

Highlights of La Guitarra:

• La Guitarra is a high -grade, past-producing underground mine with an on -site process facility

that operated up until August, 2018

• Historical Measured and Indicated Mineral Resources of approximately 7.45 million ounces

("oz") of silver-equivalent ("AgEq") and Historical Inferred Mineral Resources of approximately

10.02 million oz AgEq, based on 128,671 metres of drilling1

1 These are historical estimates only and are not NI 43 -101 compliant mineral resources. For further information regarding the

historical mineral resource estimates, please refer to the Company’s news release dated May 25, 2022.

• Functional and expandable 500 tonnes-per-day crushing grinding and flotation facility

• Fully permitted for underground mining

• Currently on care and maintenance, available for prompt restart

• Exploration potential over 15 kilometres of known structures that are untested

• Positive community relations with local stakeholders

• First Majestic to become Strategic and Largest Shareholder of Sierra Madre

About Sierra Madre

Sierra Madre Gold and Silver Ltd. is a mineral exploration company, currently focused on the acquisition,

exploration and development of the Tepic and La Tigra Properties in Nayarit, Mexico. The Company has an

experienced management team with a proven track record of wealth creation in Mexico through project

discovery, advancement, and monetization. Sierra Madre’s key objective is to advance exploration on the

Tepic and La Tigra Properties to determine whether t hey contain commercially exploitable deposits of

precious or base metals.

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]

Cautionary Note

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" and "forward -looking statements" within the

meaning of applicable securities legislation. The forward -looking statements herein are made as of the

date of this press release only, and the Company does not assume any obligation to update or revise them

to reflect new information, estimates or opinions, future events or results or otherwise, except as required

by applicable law. Often, but not always, forward-looking statements can be identified by the use of words

such as "plans", "expects", "is expected", "budgets", "scheduled", "estimates", "forecasts", "predicts",

"projects", "intends", "targets", "aims", "anticipates" or "believes" or variations (including negative

variations) of such words and phrases or may be identified by statements to the effect that certain actions

"may", "could", "should", "would", "might" or "will" be taken, occur or be achieved. Forward -looking

information in this press release includes, but is not limited to, statements with respect to the completion

of the Transaction on the terms set out in the definitive agreement (or at all) and the ability of the Company

to obtain requisite corporate and regulatory approvals for the Transaction, including but not limited to the

approval of the Exchange , Mexican antitrust appr oval and other governmental approvals as currently

anticipated.

In making the forward-looking statements included in this news release, the Company has applied several

material assumptions, including that the Company will be able to receive all required regulatory approvals

by the timelines currently anticipated (or at all) ; and that the Company will be able to complete the

Transaction on the terms of the definitive agreement. Forward-looking statements and information are

subject to various known and unknown risks and uncertainties, many of which are beyond the ability of the

Company to control or predict, that may cause the Company’s actual results, performance or achievements

to be materially different from those expressed or implied thereby, and are deve loped based on

assumptions about such risks, uncertainties and other factors set out herein, including, but not limited to,

the risk that the Company is not able to complete Transaction on the terms set out in the definitive

agreement (or at all) and the risk that the Company is unable to obtain requisite corporate and regulatory

approvals, including but not limited to the approval of the TSX Venture Exchange, the Mexican antitrust

approval and governmental approval as currently anticipated.

Such forwa rd-looking information represents management's best judgment based on information

currently available. No forward-looking statement can be guaranteed and actual future results may vary

materially. Accordingly, readers are advised not to place undue reliance on forward-looking statements or

information.