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

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 Tapajós 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 BEAUMONT CORNISH Limited

Michael Hodgson t +44 (0)20 7246 6830 Nominated Adviser & Financial Adviser Chief Executive m +44 (0)7799 473621 Roland Cornish / Michael Cornish t +44 (0)20 7628 3396

Colm Howlin PEEL HUNT LLP

Chief Financial Officer m +353 89 6078171 Joint UK Broker Ross Allister t +44 (0)20 7418 9000 Andrew Khov m +1 647 885 4874 Vice President, Investor Relations & TAMESIS PARTNERS LLP Business Development Joint UK Broker e [email protected] Charlie Bendon/ Richard Greenfield t +44 (0)20 3882 2868

www.serabigold.com

CAMARCO Financial PR - Europe

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

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 associated with vulnerability to general economic and business conditions, competition, Assay results reported within this release include those provided by the Company's own environmental and other regulatory changes, actions by governmental authorities, the on-site laboratory facilities at Palito and have not yet been independently verified. Serabi availability of capital markets, reliance on key personnel, uninsured and underinsured closely monitors the performance of its own facility against results from independent losses and other factors, many of which are beyond the control of the Company.

laboratory analysis for quality control purpose. As a matter of normal practice, the Although any forward-looking statements contained in this announcement are based Company sends duplicate samples derived from a variety of the Company's activities to upon what the Directors believe to be reasonable assumptions, the Company cannot accredited laboratory facilities for independent verification. Since mid-2019, over 10,000 assure investors that actual results will be consistent with such forward looking exploration drill core samples have been assayed at both the Palito laboratory and statements.

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 Qualified Persons Statement laboratory of 6.7% over this period. Based on the results of this work, the Company's The scientific and technical information contained within this announcement has been management are satisfied that the Company's own facility shows sufficiently good reviewed and approved by Michael Hodgson, a Director of the Company. Mr Hodgson is correlation with independent laboratory facilities for exploration drill samples. The an Economic Geologist by training with over 30 years' experience in the mining industry. Company would expect that in the preparation of any future independent He holds a BSc (Hons) Geology, University of London, a MSc Mining Geology, University Reserve/Resource statement undertaken in compliance with a recognized standard, the of Leicester and is a Fellow of the Institute of Materials, Minerals and Mining and a independent authors of such a statement would not use Palito assay results without Chartered Engineer of the Engineering Council of UK, recognizing him as both a sufficient duplicates from an appropriately certificated laboratory. 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.

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 Notice such as ‘‘believe’’, ‘‘could’’, “should” ‘‘envisage’’, ‘‘estimate’’, ‘‘intend’’, ‘‘may’’, ‘‘plan’’, Beaumont Cornish Limited, which is authorised and regulated in the United Kingdom by ‘‘will’’ or the negative of those, variations or comparable expressions, including the Financial Conduct Authority, is acting as nominated adviser to the Company in references to assumptions. These forward-looking statements are not based on historical relation to the matters referred herein. Beaumont Cornish Limited is acting exclusively for facts but rather on the Directors’ current expectations and assumptions regarding the the Company and for no one else in relation to the matters described in this Company’s future growth, results of operations, performance, future capital and other announcement and is not advising any other person and accordingly will not be expenditures (including the amount, nature and sources of funding thereof), competitive responsible to anyone other than the Company for providing the protections afforded to advantages, business prospects and opportunities. Such forward looking statements clients of Beaumont Cornish Limited, or for providing advice in relation to the contents of reflect the Directors’ current beliefs and assumptions and are based on information this announcement or any matter referred to in it.

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