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The Long Barn, Cobham Park Road, Downside, Surrey KT11 3NE This document is not intended to and does

Corporate Updates

PRESS RELEASE 12 SEPTEMBER 2025

SERABI GOLD plc (“Serabi” or “the Company”)

SERABI GOLD PLC

The Long Barn, Cobham Park Road, Downside, Surrey KT11 3NE This document is not intended to and does

t +44 (0)20 7246 6830 f +44 (0)20 7246 6831 e [email protected] www.serabigold.com not amount to an invitation or inducement to

Registered Office 66 Lincoln’s Inn Fields, London, WC2A 3LH Company Number 5131528 subscribe for shares in Serabi Gold plc

Serabi Gold Files NI 43-101 Technical Report for the Palito Complex

Serabi Gold (AIM:SRB, TSX:SBI; OTCQX: SRBIF) the Brazilian focused gold mining and development company,

is pleased to announce that it has publicly filed its detailed Technical Report (the “Technical Report”) of its updated

mineral resource estimate (“ Mineral Resource Estimate ”) and mineral reserve estimate (“ Mineral Reserve

Estimate”) for its 100% owned Palito Complex, located in Pará State, Brazil, within the Tapajós region. The Technical

Report is dated September 3, 2025, effective March 31, 2025, and supports the scientific and technical disclosure in

the Mineral Reserve Estimate and Mineral Resource Estimate (see July 31, 2025, press release).

The Technical Report is titled “ Palito Mining Complex , NI 43-101 Technical Report, Pará State, Brazil” and was

prepared by NCL Ingeniería y Construcción SpA (“NCL”) of Santiago, Chile for the Project and has been reviewed

and approved by the following qualified persons under National Instrument 43 -101 - Standards of Disclosure for

Mineral Projects ("NI 43 -101") in accordance with the rules of the Canadian Institute of Mining, Metallurgy and

Petroleum ("CIM"), which is an internationally recognised standard pursuant to the AIM Rules.

Qualified Persons

• Mr. Carlos Guzmán, RM CMC, FAusIMM, Principal/Project Director, NCL

• Mr. Gustavo Tapia, RM CMC, Metallurgical and Process Consultant, GT Metallurgy

• Mr. Nicolás Fuster, RM CMC, MAusIMM, Geologist

The full Technical Report is available under the Corporation's profile on SEDAR+ ( www.sedarplus.ca) and on the

Corporation's website at https://www.serabigold.com/

The information contained within this announcement is deemed by the Company to constitute inside information as

stipulated under the Market Abuse Regulations (EU) No. 596/2014 as it forms part of UK Domestic Law by virtue of

the European Union (Withdrawal) Act 2018.

The person who arranged for the release of this announcement on behalf of the Company was Andrew Khov, Vice

President, Investor Relations & Business Development.

About Serabi Gold plc

Serabi Gold plc is a gold exploration, development and production company focused on the prolific Tapaj ós region

in Para State, northern Brazil. The Company has consistently produced 30,000 to 40,000 ounces per year with the

Palito Complex and is planning to double production in the coming years with the construction of the Coringa Gold

project. Serabi Gold plc recently made a copper-gold porphyry discovery on its extensive exploration licence. The

Company is headquartered in the United Kingdom with a secondary office in Toronto, Ontario, Canada.

Enquiries

SERABI GOLD plc

Michael Hodgson t +44 (0)20 7246 6830

Chief Executive m +44 (0)7799 473621

Colm Howlin

Chief Financial Officer m +353 89 6078171

Andrew Khov m +1 647 885 4874

Vice President, Investor Relations &

Business Development

e [email protected]

www.serabigold.com

BEAUMONT CORNISH Limited

Nominated Adviser & Financial Adviser

Roland Cornish / Michael Cornish t +44 (0)20 7628 3396

PEEL HUNT LLP

Joint UK Broker

Ross Allister t +44 (0)20 7418 9000

TAMESIS PARTNERS LLP

Joint UK Broker

Charlie Bendon/ Richard Greenfield t +44 (0)20 3882 2868

CAMARCO

Financial PR - Europe

Gordon Poole / Emily Hall t +44 (0)20 3757 4980

PRESS RELEASE 12 SEPTEMBER 2025

SERABI GOLD plc (“Serabi” or “the Company”)

SERABI GOLD PLC

The Long Barn, Cobham Park Road, Downside, Surrey KT11 3NE This document is not intended to and does

t +44 (0)20 7246 6830 f +44 (0)20 7246 6831 e [email protected] www.serabigold.com not amount to an invitation or inducement to

Registered Office 66 Lincoln’s Inn Fields, London, WC2A 3LH Company Number 5131528 subscribe for shares in Serabi Gold plc

Copies of this announcement are available from the Company's website at www.serabigold.com.

See www.serabigold.com for more information and follow us on twitter @Serabi_Gold

Assay Results

Assay results reported within this release include those provided by the Company's own

on-site laboratory facilities at Palito and have not yet been independently verified. Serabi

closely monitors the performance of its own facility against results from independent

laboratory analysis for quality control purpose. As a matter of normal practice, the

Company sends duplicate samples derived from a variety of the Company's activities to

accredited laboratory facilities for independent verification. Since mid-2019, over 10,000

exploration drill core samples have been assayed at both the Palito laboratory and

certified external laboratory, in most cases the ALS laboratory in Belo Horizonte, Brazil.

When comparing significant assays with grades exceeding 1 g/t gold, comparison

between Palito versus external results record an average over-estimation by the Palito

laboratory of 6.7% over this period. Based on the results of this work, the Company's

management are satisfied that the Company's own facility shows sufficiently good

correlation with independent laboratory facilities for exploration drill samples. The

Company would expect that in the preparation of any future independent

Reserve/Resource statement undertaken in compliance with a recognized standard, the

independent authors of such a statement would not use Palito assay results without

sufficient duplicates from an appropriately certificated laboratory.

Forward-looking statements

Certain statements in this announcement are, or may be deemed to be, forward looking

statements. Forward looking statements are identified by their use of terms and phrases

such as ‘‘believe’’, ‘‘could’’, “should” ‘‘envisage’’, ‘‘estimate’’, ‘‘intend’’, ‘‘may’’, ‘‘plan’’,

‘‘will’’ or the negative of those, variations or comparable expressions, including

references to assumptions. These forward-looking statements are not based on historical

facts but rather on the Directors’ current expectations and assumptions regarding the

Company’s future growth, results of operations, performance, future capital and other

expenditures (including the amount, nature and sources of funding thereof), competitive

advantages, business prospects and opportunities. Such forward looking statements

reflect the Directors’ current beliefs and assumptions and are based on information

currently available to the Directors. Several factors could cause actual results to differ

materially from the results discussed in the forward-looking statements including risks

associated with vulnerability to general economic and business conditions, competition,

environmental and other regulatory changes, actions by governmental authorities, the

availability of capital markets, reliance on key personnel, uninsured and underinsured

losses and other factors, many of which are beyond the control of the Company.

Although any forward-looking statements contained in this announcement are based

upon what the Directors believe to be reasonable assumptions, the Company cannot

assure investors that actual results will be consistent with such forward looking

statements.

Qualified Persons Statement

The scientific and technical information contained within this announcement has been

reviewed and approved by Michael Hodgson, a Director of the Company. Mr Hodgson is

an Economic Geologist by training with over 30 years' experience in the mining industry.

He holds a BSc (Hons) Geology, University of London, a MSc Mining Geology, University

of Leicester and is a Fellow of the Institute of Materials, Minerals and Mining and a

Chartered Engineer of the Engineering Council of UK, recognizing him as both a

Qualified Person for the purposes of Canadian National Instrument 43-101 and by the

AIM Guidance Note on Mining and Oil & Gas Companies dated June 2009.

Notice

Beaumont Cornish Limited, which is authorised and regulated in the United Kingdom by

the Financial Conduct Authority, is acting as nominated adviser to the Company in

relation to the matters referred herein. Beaumont Cornish Limited is acting exclusively for

the Company and for no one else in relation to the matters described in this

announcement and is not advising any other person and accordingly will not be

responsible to anyone other than the Company for providing the protections afforded to

clients of Beaumont Cornish Limited, or for providing advice in relation to the contents of

this announcement or any matter referred to in it.

Neither the Toronto Stock Exchange, nor any other securities regulatory authority, has approved or disapproved of the content s of this news

release