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

Legal & Disputes

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NEWS RELEASE

July 7, 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)

announces that a public copy of the Memorial document (“Memorial”) that it filed in March of this year regarding

its international arbitration proceedings (the “Claim”) under the Comprehensive and Progressive Agreement for

Trans-Pacific Partnership (“CPTPP”) with the United Mexican States (“Mexico”) , is now available on the website

of the International Centre for the Settlement of Investment Disputes (“ICSID”) .

As noted in previous press releases, 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”), while Almadex held a 2.0% NSR royalty on the Project.

The Memorial outlines how Mexico breached its obligations under the CPTPP through actions which blocked the

development of the Ixtaca project and ultimately retroactively and arbitrarily terminated the Company’s mineral

concessions. Specifically, the Memorial demonstrates how Mexico (i) unlawfully expropriated the Claimants’

protected investments without any compensation; (ii) failed to accord the Claimants’ protected investments fair

and equitable treatment; and (iii) unlawfully discriminated against the Claimants and their protected investments.

After the Claimants’ Memorial filing, Mexico filed a request for the arbitration panel to establish a separate phase

of the proceedings (“Bifurcation”) to consider certain jurisdictional objections. Among other arguments, Mexico

alleges that the Claimants lack standing to bring the Claim because the bylaws of Almaden ’s and Almadex ’s

Mexican subsidiar ies contain standard form declarations which are mandated by Mexican law for all Mexican

enterprises with foreign investment. The Company believes that if Mexico’s argument were correct, it would render

every single one of Mexico’s investment treaties devoid of any investor protection.

Almaden considers 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. The Claimants have now submitted their response to Mexico’s request and expect a decision

from the arbitration panel on whether or not to bifurcate the proceedings later this summer.

Background to the Claim

In April, 2015, an ejido community (“Ejido”) filed a lawsuit (“Lawsuit”) against Mexico (the President, Congress,

Ministry of Economy, Directorate of Mines, Mining Registry Office), claiming that Mexico’s mineral title system

was unconstitutional because Indigenous consultation was not required before the granting of mineral title. Under

Mexican law, an ejido refers to a form of communal land tenure where a group of individuals, known as ejidatarios,

collectively own and manage agricultural land.

The Ejido in question is a small, remote mountain village of approximately 150 residents, located at an altitude of

2,569 meters, a higher elevation than the Project. It is situated entirely outside the Project’s “area of influence” as

defined in the Company’s environmental permit application of February, 2019, approximately 45 minutes to an

hour by car from the Project site. The Ejido lands cover an area of approximately 330 hectares, in the southeastern

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portion of the mineral concessions which were owned by the Company and which underpinned the Project. The

Lawsuit was supported by internationally funded non-governmental organizations.

Upon learning of the Lawsuit, Almaden immediately sought to relinquish approximately 7,000 hectares of its

mineral title area including the portion overlapping with the Ejido lands, believing that this would address the

Ejido’s concerns. The reduced title area was confirmed by the Mexican mining authorities in 2017. However, the

Ejido appealed this reduction, and in late 2020 the Mexican courts confirmed that the Company was obligated to

continue in its possession of the larger title area.

In 2018, President Lopez-Obrador (“AMLO”) came into power in Mexico. The AMLO regime is widely recognized

as having been hostile to the mining industry, in particular foreign mining companies that own ed or sought to

develop mining projects in Mexico.

In 2022, Mexico’s Supreme Court (“SCJN”) ruled on the Lawsuit. In effect, the SCJN ruling concluded that the

Mexican mining law was not unconstitutional, b ut that the Mexican mining authority (“Economia”) had improperly

issued the Claimants’ mineral titles as it had not incorporated Mexico’s Indigenous consultation obligations into

the mineral title issuance procedures. The SCJN required that the Company’s two mineral titles be suspended, in

order that the Company’s mineral title applications, originally made in 2002 and 2008 and approved in 2003 and

2009, could be reissued by Economia after it complied with its Indigenous consultation obligations.

The rights endowed by the Company’s mineral titles were suspended in June, 2022, and the Company began

working cooperatively with Economia to facilitate what it thought would be the first ever Indigenous consultation

in Mexico in respect of the granting of mineral titles. In October, 2022 however, the head of Economia was

replaced and the Company’s access to Economia ceased.

In February, 2023 Economia filed a notice with the courts charged with implementing the SCJN decision, seeking

to deny the two mineral title applications retroactively. The notice claimed that the applications contained alleged

de minimis technical faults, despite Economia’s acceptance of the mineral title applications and grant of the

mineral titles in 2003 and 2009. By alleging such de minimis technical faults in the mineral title applications,

Economia breached Mexican domestic law and international law to deny arbitrarily and pre-emptively the grant of

the mineral titles and thereby avoid the Indigenous consultation ordered by the SCJN. Such consultation would

have been welcomed by both the Company and community members living in the area of influence of the Project.

Despite the legal appeals of the Company and surrounding community members that Indigenous consultation

should proceed, the Mexican courts endorsed Economia’s position. Therefore, the mineral rights underpinning the

Project were definitively cancelled and reverted to the Government of Mexico, and Indigenous consultation never

occurred.

The C laimants have suffered substantial harm arising out of Mexico’s conduct in breach of its investment

protection obligations under the CPTPP, including (without limitation):

• Economia’s reassessment of the original applications for the mineral titles, holding them to be deficient

and unfeasible, contradicting the position previously adopted by it decades earlier, and violating the

Company and its subsidiary’s right to amend or supplement the original mineral title applications; and

• the Mexican Secretariat of Environment and Natural Resources’ (Secretaría del Medio Ambiente y

Recursos Naturales, “SEMARNAT”) delay in issuance and ultimate refusal to issue the environmental

permit (Manifiesto de Impacto Ambiental) for the Project.

The Claimants filed their Request for Arbitration in June, 2024, and the three -person arbitration panel has now

been formed. Almaden filed its Memorial in March, 2025, and the Claimants are seeking damages of US$1.06

billion, in the aggregate. This number will be further updated as the Claim proceeds, to reflect future movements

in precious metal prices, exchange rates, interest rates, and other factors.

The Claimants’ legal counsel for this arbitration are Boies, Schiller, Flexner, LLP, and RíosFerrer + Gutiérrez, S.C.

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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 arbitration panel decision on Bifurcation as well as the timing, result and damages arising from the Company’s

Memorial.

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

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/