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Almaden Provides Update on Arbitration Procedure with Mexico Vancouver, B.C.

Legal & Disputes

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NEWS RELEASE

July 28, 2025

Trading Symbols:

TSX: AMM; OTCQB: AAUAF

www.almadenminerals.com

Almaden Provides Update on Arbitration Procedure with Mexico

Vancouver, B.C. Almaden Minerals Ltd. (“Almaden” or “the Company”; TSX: AMM; OTCQB: AAUAF)

provides an update to the international arbitration proceedings (the “Cla im”) under the Comprehensive and

Progressive Agreement for Trans-Pacific Partnership (“CPTPP”) with the United Mexican States (“Mexico”).

Almaden is pursuing the Claim together with Almadex Minerals Ltd. (“Almadex ”), on behalf of themselves and

their Mexican subsidiaries (the “Claimants”). Prior to the illegal acts of Mexico which resulted in the complete loss

of the investment, Almaden held 100% of the Ixtaca precious metals project in Mexico (the “Project”), whil e

Almadex held a 2.0% NSR royalty on the Project.

As reported on July 7, 2025, after the Claimants filed their Memorial document, Mexico filed a request for the

arbitration panel (the “Panel”) to establish a separate phase of the proceedings (“Bifurcation”) to consider certain

jurisdictional objections.

Almaden is pleased to report that the Panel has re jected Mexico’s request to consider these jurisdictional

objections separately from the merits of the case.

As noted in the press release of July 7, 2025, the Claimants consider the arguments underpinning Mexico’s

Bifurcation request to be fundamentally flawed and disingenuous, motivated by its desire to defer Mexico’s

Counter-Memorial and its responses to the Claimants’ claims, and to delay the resolution of the proceedings.

With this Bifurcation request now rejected in full, Almaden expects to be able to share an update on the arbitration

calendar in Q4.

On behalf of the Board of Directors,

“J. Duane Poliquin”

J. Duane Poliquin

Chair

Almaden Minerals Ltd.

Safe Harbor Statement

Certain of the statements and information in this news release constitute “forward -looking statements” within the meaning of

the United States Private Securities Litigation Reform Act of 1995 and “forward -looking information” within the meaning of

applicable Canadian provincial securities laws. All statements, other than statements of historical fact, are forward -looking

statements or information. Forward-looking statements or information in this news release relate to, among other things, the

timing of any update regarding the arbitration calendar.

These forward-looking statements and information reflect the Company’s current views with respect to future events and are

necessarily based upon a number of assumptions that, while considered reasonable by the Company, are inherently subject

to significant legal, regulatory, business, operational and economic uncertainties and contingencies, and such uncertainty

generally increases with longer-term forecasts and outlook. These assumptions include: stability and predictability in Mexico’s

response to the arbitration process under the CPTPP; stability and predictability in the application of the CPTPP and arbitral

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decisions thereon; the ability to continue to finance the arbitration process, and continued respect for the rule of law in Mexico.

The foregoing list of assumptions is not exhaustive.

The Company cautions the reader that forward -looking statements and information involve known and unknown risks,

uncertainties and other factors that may cause actual results and developments to differ materially from those expressed or

implied by such forward-looking statements or information contained in this news release. Such risks and other factors include,

among others, risks related to: the application of the CPTPP and arbitral decisions thereon; continued respect for the rule o f

law in Mexico; polit ical risk in Mexico; crime and violence in Mexico; corruption in Mexico; uncertainty as to the outcome of

arbitration or the funding available to the Company to pursue it ; as well as those factors discussed the section entitled "Risk

Factors" in Almaden's Annual Information Form and Almaden's latest Form 20-F on file with the United States Securities and

Exchange Commission in Washington, D.C. Although the Company has attempted to identify important factors that could affect

the Company and may cause actual actions, events or results to differ materially from those described in forward -looking

statements or information, there may be other factors that cause actions, events or results not to be as anticipated, estimated

or intended. There can be no assurance that our forward -looking statements or information will prove to be accurate.

Accordingly, readers should not place undue reliance on forward-looking statements or information. Except as required by law,

the Company does not assume any obligation to release publicly any revisions to on forward-looking statements or information

contained in this news release to reflect events or circumstances after the date hereof or to reflect the occurrence of

unanticipated events.

Contact Information:

Almaden Minerals Ltd.

Tel. 604.689.7644

Email: [email protected]

http://www.almadenminerals.com/