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Goldhaven Resources Advances Drilling with Second Hole Completed ON Copeçal GOLD Project

Exploration Programs

GOLDHAVEN RESOURCES ADVANCES DRILLING WITH SECOND HOLE COMPLETED

ON COPEÇAL GOLD PROJECT

Vancouver, BC – October 21st, 2025 – GoldHaven Resources Corp. (CSE: GOH | OTCQB:

GHVNF | Frankfurt: 4QS) (“GoldHaven” or the “Company”) is pleased to announce the

successful completion of its second diamond drill hole (COP-002) at the East Target of its

100%-owned Copeçal Project, located in Mato Grosso State, Brazil.

Highlights:

• Second diamond drill hole (COP-002) completed to a depth of 121 metres.

• Enhanced alteration and veining intensity observed relative to COP-001.

• Intersections include zones of silicification, biotite, quartz veining, sericite-

chlorite, and weak carbonate alteration — features commonly associated with

hydrothermal gold systems.

• Geological and structural logging underway; sampling in progress for gold and

multi-element analysis.

• Drill rig mobilized to third pad, 100 metres west along strike from COP-001 and

COP-002.

Drill hole CP-24-002 was advanced to a total downhole depth of 121 metres, intersecting

lithologies consistent with those observed in the nearby first hole (COP-001). Importantly,

the second hole displayed notable enhancements in alteration and veining int ensity,

including broader zones of silicification, localized biotite alteration, and quartz veining

accompanied by sericite-chlorite and weak carbonate alteration. These alteration

assemblages are often indicative of hydrothermal fluid activity associated with gold

mineralizing systems.

Detailed geological and structural logging of both COP -001 and COP-002 is currently

underway. Sampling for gold and multi -element geochemical analysis will follow

immediately after the logging process. All samples will be prepared at ALS Laboratories’

facility in Cuiabá, Mato Grosso, and subsequently analyzed at the ALS analytical laboratory

in Belo Horizonte, Minas Gerais.

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Figure 1: GoldHaven team completes 2nd diamond drill hole on Copeçal Gold project

The drill rig has now been mobilized to the third drill pad, positioned approximately 100

metres west along strike from the collar locations of the first two holes. This next hole will

continue to test the continuity of the East Target’s mineralized corridor and further evaluate

the geological controls on alteration and veining observed to date.

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Figure 2: GoldHaven core being readied for transport in Brazil to ALS Global Labs

“We’re encouraged by the geological consistency and strengthening alteration we’re seeing

in our first two drill holes at Copeçal,” stated Rob Birmingham, President and CEO of

GoldHaven Resources. “These early results support our interpretation of a large,

structurally controlled system with the potential to host gold mineralization. With the drill

now turning on our third hole, we look forward to expanding our understanding of the East

Target and delivering steady news flow as we advance this exciting project.”

GoldHaven will continue to provide regular updates as drilling progresses and as assay

results become available.

About the Copeçal Gold Project: A Brief History

The Copeçal Gold Project is strategically situated within the Alta Floresta Gold Province, a

historically productive region that has yielded substantial gold discoveries since the late 1970s.

GoldHaven’ s tenements cover a total of 3,681 hectares in a geologically favourable setting within

the Juruena Gold Province of Brazil.

The Juruena Gold Province, also known as the Juruena Magmatic Arc, is an orogenic belt highly

prospective for mesothermal shear-related and intrusion-related gold deposits, such as G-Mining’s

Tocantinzinho deposit. Additionally, the region hosts recently i dentified porphyry-style deposits

(e.g., Serabi, Jaca) and epithermal-style deposits (e.g., X1, Aura). The presence of multiple deposit

styles, along with the confirmation of large-scale gold deposits in the Juruena Province of Brazil,

underscores the significant potential of the Copeçal Gold Project.

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Recent exploration programs, including geochemical soil sampling, drone-mounted magnetometry

surveys, and historical drilling data, indicate the presence of multiple gold -bearing structures.

Notably, AngloGold Ashanti previously conducted systematic exploration on the property from 2010

to 2016, including auger and air -core drilling, geophysical surveys, and rock geochemistry,

identifying multiple zones of anomalous gold mineralization.

The Copeçal Gold Project benefits from extensive historical work, with AngloGold Ashanti’s

exploration confirming gold and arsenic anomalies, indicative of significant mineralization potential.

Soil sampling grids and follow-up auger drilling in key areas revealed consistent gold values over

wide zones, further supporting the presence of a substantial mineralized system.

Figure 3: Location of the Copeçal Gold Project within the prolific Juruena Gold Belt

About GoldHaven Resources Corp.

GoldHaven Resources Corp. is a Canadian junior exploration Company focused on acquiring and

exploring highly prospective land packages in North and South America. The Company’s projects

include (i) the flagship Magno Project, a district-scale polymetallic property adjacent to the historic

Cassiar mining district in British Columbia; (ii) the Three Guardsman Project, which exhibits

significant potential for copper and gold-skarn mineralization; (iii) the Copeçal Gold Project, a drill-

ready gold project located in Mato Grosso, Brazil with a 6km strike of anomalous gold in soil samples;

and (iv) three critical mineral projects with extensive tenement packages totalling 123,900 hectares:

Bahia South, Bahia North and Igautu projects located in Brazil.

Qualified Person:

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The scientific and technical information disclosed in this document has been reviewed and

approved by Jonathan Victor Hill, B.Sc. Hons, FAusIMM, an independent Qualified Person consistent

with NI 43-101 and Country Manager of GoldHaven.

On Behalf of the Board of Directors

Rob Birmingham, Chief Executive Officer

For further information, please contact:

Rob Birmingham, CEO

www.GoldHavenresources.com

[email protected]

Office Direct: (604) 629-8254

The CSE and Information Service Provider have not reviewed and does not accept responsibility for

the accuracy or adequacy of this release.

Forward-Looking Statements

This news release contains “forward -looking information” within the meaning of applicable

Canadian securities legislation. Often, but not always, forward-looking information and information

can be identified by the use of words such as “plans”, “expects” or “does not expect”, “is expected”,

“estimates”, “intends”, “anticipates” or “does not anticipate”, or “believes”, or variations of such

words and phrases or state that certain actions, events or results “may”, “could”, “would”, “might”

or “will” be taken, occur or be achieved. Actual future results may differ materially. In particular, this

news release contains forward-looking information relating to the Company and the Property. The

forward-looking information reflects management's current expectations based on information

currently available and are subject to a number of risks and uncertainties that may cause outcomes

to differ materially from those discussed in the forward-looking information. Such risk factors may

include, among others, but are not limited to: general economic conditions in Canada and globally;

industry conditions, including governmental regulation and environmental regulation; the

availability of capital on acceptable terms; the need to obtain required approvals from regulatory

authorities; stock market volatility; competition for, among other things, skilled personnel and

supplies; incorrect assessments of the value of acquisitions; geological, technical, processing and

transportation problems; changes in tax laws and incentive progra ms; failure to realize the

anticipated benefits of acquisitions and dispositions; and the other factors. Although the Company

believes that the assumptions and factors used in preparing the forward-looking information are

reasonable, undue reliance should not be placed on such information and no assurance can be

given that such events will occur in the disclosed time frames or at all. Factors that could cause

actual results or events to differ materially from current expectations include: (i) adverse market

conditions; and (ii) other factors beyond the control of the Company. New risk factors emerge from

time to time, and it is impossible for the Company’s management to predict all risk factors, nor can

the Company assess the impact of all factors on Company’s business or the extent to which any

factor, or combination of factors, may cause actual results to differ from those contained in any

forward-looking information. The forward-looking information included in this news release are

made as of the date of this news release and the Company expressly disclaims any intention or

obligation to update or revise any forward -looking information whether as a result of new

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information, future events or otherwise, except as required by applicable law. Additional information

identifying risks and uncertainties that could affect financial results is contained in the Company’s

filings with Canadian securities regulators, which a re available on the Company’s profile at

www.sedarplus.ca.