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Galantas GOLD Announces Updated Mineral Resource Estimate at Andacollo Project and Provides Notice of Meeting and Record Date FOR the Special Meeting to Approve Its Acquisition

Resource Estimates Shareholder Meetings

GALANTAS GOLD ANNOUNCES UPDATED MINERAL RESOURCE ESTIMATE AT

ANDACOLLO PROJECT AND PROVIDES NOTICE OF MEETING AND RECORD DATE

FOR THE SPECIAL MEETING TO APPROVE ITS ACQUISITION

TORONTO, ONTARIO – May 4, 2026 – Galantas Gold Corporation (“Galantas” or the “Company”)

(TSX-V: GAL | AIM: GAL) is pleased to announce that it has filed a technical report (the “Andacollo

Technical Report”) containing an updated mineral resource estimate for the Andacollo Oro Gold

Project (the “Andacollo Project ”). The Andacollo Technical Report titled “Mineral Resource

Estimate Update, Andacollo Oro Gold Project, Coquimbo Region, Chile”, with an effective date of

February 1, 2026, was prepared by Ryan Wilson, P.Geo., Matthew Halliday, P.Geo., David Frost,

FAusIMM, and Ghislain Prévost, P.Eng. of DRA Americas Inc. (“DRA”), in accordance with National

Instrument 43-101 Standards of Disclosure for Mineral Projects (“NI 43-101 ”). A copy of the

Andacollo Technical Report is available on the Company’s profile on SEDAR+ at

www.sedarplus.ca.

In addition, Galantas announces that it has filed the required notice setting the record and

meeting dates in respect of the special meeting of shareholders (the “Meeting”) to consider the

previously announced transaction to acquire all of the issued and outstanding shares of Sol de

Oro Mining Ltd. (“Sol”) from Robert Sedgemore, which indirectly holds a 100% interest in the

Andacollo Project (the “Transaction”). The record date for determination of shareholders eligible

to vote at the Meeting is set as May 12, 2026, and the Meeting will be convened on Monday,

June 15, 2026.

The management information circular in respect of the Meeting (the “Circular”) is expected to

be mailed and filed following the record date. Further details relating to the Transaction and the

Meeting, including the location of the Meeting and manner of voting, will be contained in the

Circular.

Shareholders are cautioned that the Andacollo Project is not currently owned by the Company

and Galantas’ interest in the Andacollo Project remains subject to completion of the Transaction.

Galantas has received conditional approval from the TSX Venture Exchange (the “TSXV”) with

respect to the completion of the Transaction, which requires Galantas to submit certain

customary documents and information to the TSXV prior to completing the Transaction,

including, among other things, evidence of disinterested shareholder approval in accordance

with the policies of the TSXV. The Transaction is expected to be completed in June 2026, subject

to receipt of all required approvals.

Highlights of the Andacollo Technical Report

 The current pit-constrained Mineral Resource Estimate update comprises an Indicated

Mineral Resource of 102.4 million tonnes (Mt) at 0.45 grams/tonne (g/t) gold (Au)

containing 1.47 million ounces (Moz) Au and an Inferred mineral resource of 347.9 Mt

at 0.41 g/t Au containing 4.54 Moz Au.

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 Additional and significant gold mineralization identified by DRA is contained within the

Andacollo Project property boundary and could be accessed with a potential land access

agreement from the adjacent property controlled by Teck Resources Limited (“Teck”).

 The Andacollo Project is a brownfield, past-producing open pit heap leach gold operation

with approximately 1.12 Moz Au of historical gold production.

 Existing site infrastructure and local environmental approvals provide a strong platform

for future engineering, permitting, and restart-readiness studies.

 Open-pit optimization sensitivity analysis indicates large, optimized pit shells with

relatively low stripping ratios across a range of gold price assumptions. This sensitivity

analysis is not additive to the current mineral resource estimate and does not represent

an economic analysis or production scenario.

Mario Stifano, Chief Executive Officer of Galantas, commented:

“The updated Mineral Resource Estimate is an important milestone for Galantas and confirms

Andacollo as a substantial brownfield gold project with scale, a long operating history, and

meaningful exploration and development upside. The large and robust resource under multiple

gold price scenarios provides for a long-life asset while also demonstrating potential to

significantly expand future production scenarios. There is significant exploration potential to

expand the gold resource and for the discovery of significant copper resources at Andacollo,

including potential extensions of adjacent porphyry copper mineralization.”

Mineral Resource Estimate Update

The updated Mineral Resource Estimate presented in the Andacollo Technical Report is

summarized below.

Resource Classification Material Tonnes (Mt) Au (g/t) Contained Au (Moz)

Measured Oxide – – –

Measured Mixed – – –

Total Measured Oxide + Mixed – – –

Indicated Oxide 17.6 0.53 0.30

Indicated Mixed 84.8 0.43 1.17

Total Indicated Oxide + Mixed 102.4 0.45 1.47

Inferred Oxide 51.4 0.38 0.63

Inferred Mixed 296.5 0.41 3.91

Total Inferred Oxide + Mixed 347.9 0.41 4.54

Notes:

1. The mineral resource estimate has been estimated using the CIM Definition Standards for Mineral Resources and

Mineral Reserves in accordance with NI 43-101.

2. Mineral resources that are not mineral reserves do not have demonstrated economic viability.

3. Inferred mineral resources are exclusive of Measured and Indicated mineral resources.

4. In-pit mineral resources are constrained by Pseudoflow optimized pit shells using HxGn MinePlan™ 3D.

5. Pit shells were developed using pit slopes of 50 degrees, a gold price of US$3,800/oz, mining costs of US$5.67/t for both

mineralization and waste, US$4.82/t for in-pit dumps, processing costs of US$7.40/t milled, G&A costs of US$0.47/t

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milled, process recovery of 75.0%, transportation costs of US$0.84/t, discount rate of 8%, and an assumed production

rate of 5.475 Mt per annum.

6. In-pit estimates are reported in-situ at a marginal cut-off grade of 0.08 g/t Au.

7. Resource estimations were interpolated using Inverse Distance Weighting squared (“IDW2”); average densities for

oxide and mixed mineral types were applied for tonnage calculation purposes.

8. The effective date of the mineral resource estimate is February 1, 2026.

9. The independent qualified person for the mineral resource estimate, as defined by NI 43-101, is Matthew Halliday,

P.Geo., of DRA Americas Inc.

10. The Qualified Person is not aware of any metallurgical, environmental, permitting, legal, title, taxation, socio-economic,

marketing, political, or other risk factors that might materially affect the estimate of mineral resources.

11. Figures have been rounded to an appropriate level for the reporting of mineral resources and may not compute exactly

as shown.

Open-Pit Optimization Sensitivity — Not Additional Mineral Resources

DRA completed an open-pit optimization sensitivity analysis to evaluate how the optimized pit

shell responds to different gold prices and related cut-off grades (COG). The analysis

demonstrates that the mineralized system remains substantial under lower gold price

assumptions. This analysis is not additive to the current MRE update and is provided only to

illustrate the effect of gold price and COG assumptions on optimized pit shell geometry.

Gold

Price COG Indicated

Gold In

Situ Inferred

Gold In

Situ Waste

Stripping

ratio

$/oz g/t

Tonnes

(Mt) Au (g/t)

Ounces

(Moz)

Tonnes

(Mt)

Au

(g/t)

Ounces

(MOz)

Tonnes

(Mt)

1,500 0.205 26.4 0.83 0.70 60.8 0.81 1.58 85.0 0.97

2,000 0.154 47.8 0.65 1.00 115.3 0.64 2.37 153.1 0.94

2,500 0.123 71.2 0.56 1.28 186.0 0.54 3.23 267.3 1.04

3,000 0.102 83.9 0.51 1.38 253.0 0.46 3.74 316.4 0.94

3,200 0.096 90.4 0.48 1.40 290.8 0.44 4.11 354.4 0.93

3,500 0.088 98.6 0.46 1.46 329.3 0.41 4.34 378.5 0.88

3,800* 0.081 102.4 0.45 1.47 347.9 0.41 4.54 412.5 0.92

* Selected gold price for reporting the current MRE update.

Figures may not compute exactly as shown due to rounding.

The sensitivity analysis indicates that the Andacollo Project maintains a large, optimized pit shell

across a range of gold price assumptions, with relatively low stripping ratios. These results are

preliminary in nature, and are not indicative of the mineral resources contained at the Andacollo

Project. The sensitivity analysis should not be interpreted as an economic analysis or production

scenario.

Project Overview

The Andacollo Project is located in the Coquimbo Region of Chile, approximately 55 kilometres

southeast of La Serena and immediately adjacent to the town of Andacollo. The Andacollo Project

comprises approximately 1,213 hectares of exploitation mining concessions and encompasses

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the former Andacollo open pit gold mining operations, including historical pits, heap leach pads,

processing facilities, waste rock storage areas, and associated infrastructure.

Figure 1: Existing brownfield infrastructure at the Andacollo Project, Coquimbo Region, Chile

Galantas has entered into a definitive share purchase agreement to acquire the Andacollo Project

through the acquisition of Sol. Until completion of the Transaction, the Andacollo Project remains

subject to the previously announced closing conditions, including minority shareholder approval,

regulatory approvals and final acceptance of the TSXV. Shareholders are cautioned that the

Andacollo Project is not currently owned by the Company and Galantas’ interest in the Andacollo

Project remains subject to completion of the Transaction.

The Andacollo Project is a past-producing open-pit heap leach gold operation. Historical mining

commenced in the mid-1990s and continued through multiple operating cycles, with a combined

historical production of approximately 1.12 Moz Au 1. The operation historically utilized

conventional open pit mining, three-stage crushing, heap leaching, and a conventional

adsorption-desorption-recovery circuit.

As a brownfield asset, the Andacollo Project benefits from existing site infrastructure, including

historical open pits, heap leach pads, water and power infrastructure, access roads, and

processing facilities. The Andacollo Project also benefits from proximity to the town of Andacollo

and to regional mining services, labour, suppliers, and infrastructure in La Serena and Coquimbo.

Existing infrastructure may reduce future restart capital requirements compared with a

1 As compiled from historical site production data records; previously reported in Geoinvest (2021), CMID SPA, Andacollo Oro, Chile

Technical Report Prepared by Geoinvest on behalf of CMID; Mineras Mina Andacollo Oro Project, Andacollo, Coquimbo Region,

Chile, NI 43-101 Technical Report, Effective Date August 23, 2021.

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greenfield development scenario, subject to further engineering, cost estimation, and technical

studies.

Significantly, the Andacollo Project benefits from existing RCA ( Resolución de Calificación

Ambiental No. 151/2014) environmental approvals authorizing restart of mining and processing

activities. The Andacollo Project has the required environmental approval in place for the

proposed restart activities, subject to the completion of remaining technical and sectoral

approvals.

The combination of scale, historical production, existing infrastructure, and open-pit geometry

provides Galantas with a strong technical foundation to advance the Andacollo Project through

the next phase of engineering, metallurgical, and restart-readiness studies.

Geology and Exploration Potential

Gold mineralization at the Andacollo Project is hosted primarily by the Quebrada Marquesa

Formation and is generally described as gold-bearing manto-style mineralization related to a

proximal porphyry copper-gold system. Mineralization is interpreted to have formed through

migration of hydrothermal fluids from the adjacent Carmen de Andacollo porphyry system along

favourable structures and permeable volcanic units.

The updated geological interpretation completed by Galantas and DRA improves continuity

within the mineralized domains and supports future exploration potential. Several well-defined

exploration targets remain open on the property, particularly near and beneath currently

identified mineralized zones and historical pits.

There is significant exploration potential at the Andacollo Project, including:

 Extension of known manto mineralization along strike and down-dip.

 Further exploration of recognized high-grade zones, including angle-drilling of vertical and

near-vertical structures.

 Exploration for porphyry copper mineralization (hypogene and supergene-enriched)

extending onto the Andacollo Project from the adjacent Teck mine.

Metallurgy and Processing

Historical metallurgical testwork and operating data indicate that the Andacollo Project

mineralization is amenable to heap leach cyanidation. Column leach and bottle roll tests

indicated optimal crushing at approximately 3/8 inch, with historical recoveries generally in the

range of 65% to 75%, depending on ore type, grade, crush size, and leach exposure time.

Historical operational data also suggest that extending leach cycle duration may improve gold

recovery.

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DRA recommends additional metallurgical testwork, particularly for higher-grade vein material

and future ore sources, to support geometallurgical modelling, recovery forecasting, reagent

consumption estimates, and future flowsheet development.

Future Plans

Galantas intends to advance the Andacollo Project through a phased work program focused on

resource confidence, exploration upside, metallurgical testing, engineering, and restart-

readiness studies. DRA has recommended Phase 1 work including infill and confirmatory drilling,

exploration drilling, metallurgical testing, preparation of a Preliminary Economic Assessment

(PEA), and continued review and compilation of the historical database.Galantas is also assessing

whether the gold remaining in historic heaps on the property may represent an opportunity for

early production.

Qualified Person Statement

The scientific and technical information in this news release has been reviewed and approved by

Ryan Wilson, P.Geo., of DRA Americas Inc., an independent qualified person for the purposes of

NI 43-101.

About Galantas Gold Corporation

Galantas Gold Corporation is a publicly traded gold company focused on the acquisition,

development, and advancement of gold and copper assets in stable mining jurisdictions. The

Company is currently advancing the Indiana Project in Chile and has entered into a definitive

share purchase agreement to acquire the Andacollo Project through the acquisition of Sol,

subject to applicable approvals and closing conditions. Galantas’ strategy is to build long-term

shareholder value through disciplined capital allocation, technically rigorous project evaluation,

and responsible development of high-quality mineral assets.

Enquiries

Galantas Gold Corporation

Mario Stifano, Chief Executive Officer

Email: [email protected]

Website: www.galantas.com

Telephone: +1 416-848-7744

Grant Thornton UK LLP (AIM Nomad)

Philip Secrett, Harrison Clarke, Elliot Peters

Telephone: +44 (0)20 7383 5100

SP Angel Corporate Finance LLP (AIM Broker)

David Hignell, Charlie Bouverat (Corporate Finance)

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Grant Barker (Sales & Broking)

Telephone: +44 (0)20 3470 0470

ON BEHALF OF THE BOARD OF DIRECTORS

Mario Stifano

Chief Executive Officer and Director

Cautionary Statement Regarding Forward-Looking Information

This news release contains forward-looking statements and forward-looking information within

the meaning of applicable Canadian securities laws and the United States Private Securities

Litigation Reform Act of 1995. Forward-looking information includes, but is not limited to,

statements regarding the completion of Transaction and the acquisition of the Andacollo Project;

the timing and outcome of the Meeting; the receipt of minority shareholder approval, regulatory

approvals and final acceptance of the TSXV; the Company’s expectations, plans, objectives, and

future activities with respect to the Andacollo Project; the potential restart of operations; the

potential timing, scope, and results of future exploration, drilling, metallurgical testing,

engineering studies, and technical studies; the potential preparation of a Preliminary Economic

Assessment; the potential benefits of existing infrastructure; the potential impact of the current

property boundary; the potential to obtain additional land access, pursue future synergies or

collaboration with neighbouring property holders, or complete commercial arrangements; the

potential economic extraction of mineral resources; and the Company’s development and

financing plans.

Forward-looking information is based on the opinions, estimates, assumptions, and expectations

of management and the qualified persons as of the date of this news release. Such assumptions

include, but are not limited to, assumptions regarding completion of the Transaction and the

Andacollo Project, receipt of required shareholder, regulatory and TSX Venture Exchange

approvals, future gold prices, exchange rates, regulatory approvals, permitting, access to capital,

technical study results, metallurgical performance, operating and capital costs, infrastructure

condition, contractor availability, property access, commercial arrangements with neighbouring

property holders and the Company’s ability to execute its plans. Forward-looking information is

subject to known and unknown risks, uncertainties, and other factors that may cause actual

results to differ materially from those expressed or implied by such forward-looking information.

Readers are cautioned not to place undue reliance on forward-looking information. The Company

does not undertake to update any forward-looking information except as required by applicable

securities laws.

Cautionary Note Regarding Mineral Resources

Mineral resources that are not mineral reserves do not have demonstrated economic viability.

Inferred Mineral Resources are considered too speculative geologically to have economic

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considerations applied to them that would enable them to be categorized as mineral reserves.

There is no certainty that all or any part of the mineral resources will be converted into mineral

reserves.

Cautionary Note Regarding Historical Production, Existing Infrastructure and Production

Decisions

Historical production and historical operating performance are not necessarily indicative of

future production, recovery, costs, or economic results. Existing infrastructure may require

refurbishment, repair, replacement, or further technical assessment before any restart of

operations.

No mineral reserves have been estimated for the Andacollo Project. The Company has not made

a production decision, and any restart decision will require further technical, engineering,

environmental, regulatory, economic, and financing work.

Neither TSXV nor its Regulation Services Provider, as that term is defined in the policies of the

TSXV, accepts responsibility for the adequacy or accuracy of this news release.

The Company is admitted to trading on AIM and, accordingly, further disclosure may be found on

the Company’s profile on the London Stock Exchange website.

The information contained in this announcement is deemed to constitute inside information as

stipulated under the retained EU law version of the Market Abuse Regulation (EU) No. 596/2014,

which forms part of UK law by virtue of the European Union (Withdrawal) Act 2018. This

information is disclosed in accordance with the Company’s obligations under Article 17 of UK

MAR. Upon publication of this announcement, this inside information is now considered to be in

the public domain.