REG - Nativo Resources Plc - Operations Updates: Bonanza Surface Sampling

Nativo ResourcesAnnouncement

12/01/2026 07:00

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RNS Number : 3960O  Nativo Resources Plc  12 January 2026

This announcement contains inside information for the purposes of Article 7 of
the UK version of Regulation (EU) No 596/2014 which is part of UK law by
virtue of the European Union (Withdrawal) Act 2018, as amended ("MAR"). Upon
the publication of this announcement via a Regulatory Information Service,
this inside information is now considered to be in the public domain.

 

12 January 2026

 

Nativo Resources Plc

("Nativo" or the "Company")

 

Operations Updates: Bonanza Surface Sampling

 

Bonanza sampling programme confirms required gold grades for economic mining
and expands wider Tesoro Concession prospectivity

 

Further to the announcement dated 18 November 2025, Nativo Resources plc
(LON:NTVO), a gold-focused mining company with interests in Peru, is pleased
to announce that initial assays from surface trenching along interpreted veins
within the Tesoro Concession confirm historical data and support Nativo's plan
to recommence gold production activities at Bonanza. This confidence is
underpinned by positive near-mine sample results and the successful completion
of underground rehabilitation and preparation of existing mine workings.
Additional prospectivity within the Tesoro Concession has also been confirmed.

 

The programme (completed and ongoing) covers approximately 400 hectares
gathering approximately 250 samples. 20 trenches were excavated at 25-metre
intervals to depths of 1.2-1.5 metres to expose the vein structures beneath
the colluvial cover. Systematic channel sampling was completed within the
surface trenches, with samples taken at 1-metre intervals across the exposed
mineralised structures to characterise grade variability along strike. The
sampling programme focused on geological mapping, trenching, and geochemical
sampling, with the objective of verifying and augmenting the historical gold
grades and locations originally identified by St Elias Mines (Figure 1), whose
surveys were evaluating near-mine gold mineralisation and structural controls
to support production planning and early-stage mining activities, and
verifying the geological vein model.

 

For the Bonanza mine, Nativo's Qualified Person, who designed the ongoing
underground mine sampling programme (over 150 samples) has reviewed the
sampling and results available,  including the St Elias Mines legacy work and
the Nativo commissioned sampling programmes, selecting three key surface
results (Figure 1), which he considers are representative of the
mineralisation along the Bonanza, Tesoro-01 and Tesoro veins and which
validate the original St Elias Mines results.

 

Highlights

 

Near-Mine High-Grade Gold Mineralisation

 

Surface sampling returned localised values reaching Au 19.5g/t and averaging
Au 10g/t, confirming gold mineralisation associated with narrow mesothermal
veins and veinlets in close proximity to existing Bonanza workings. A total of
102 surface rock samples, including rock chip and chip-channel samples, were
collected and analysed by Fire Assay with full QA/QC controls at the Certimin
laboratory in Lima.

 

Figure 1: 288 legacy samples were taken by St Elias Mines between 2004-2014
based on the identified anomalies. Interpretation of the geophysical surveys
confirmed anomalies associated with the Bonanza, Tesoro 01, Tesoro and
Morrocota veins. The three annotated results, within the main Tesoro/Bonanza
area (large orange circles) confirm the mineralisation and potential and
uphold the legacy results.

 

Structural Controls Favourable

 

Mineralisation is predominantly controlled by NW-SE-trending shear zones and
their interaction with the parallel and cross cutting faulting, with three
principal structural systems identified (including the Bonanza Vein), each
extending up to 1 km in strike length within the concession. These structures
are considered favourable for lateral and vertical continuity, an important
factor for sustainable mining operations.

 

Basis For Mine Development

 

The combination of sample results and completed underground preparation
establishes a strong basis for mine planning and development, confirming
grades and providing structural model refinement.

 

Restart of Mining Operations at Bonanza

 

Discussions with qualified mining contractors are in progress combined with
finalisation of the mine plan.

 

Next Steps

 

Nativo will continue refining the geological and structural model of the
Bonanza vein while advancing underground geological mapping and grade control
sampling focused on shear zones and high-priority anomalies proximal to
existing workings.

 

This will be undertaken dynamically as the Company restarts mining in the
existing Bonanza mine. As part of this process of refinement, the Company has
taken 34 samples from within the Bonanza mine galleries and shaft to date and
is waiting for these to be analysed and interpreted to update the current Mine
Plan.

 

The programme will close out with 117 further samples from focus areas. These
activities are intended to support the commencement of production in the near
future, optimise mine planning for Bonanza and Morrocota, and progressively
expand the gold footprint at the Tesoro Concession.

 

Stephen Birrell, Chief Executive Officer of Nativo, commented:

 

"The sampling programme has confirmed, in the view of the Directors, that the
Bonanza vein has the required grades for mining to restart. In addition, it is
pleasing to see high surface grades south of Bonanza which indicate potential
for at least one - and potentially two - further mine sites in addition to
Morrocota."

 

For further information please contact:

 

  Nativo Resources                             Via Vigo Consulting

  Stephen Birrell, Chief Executive Officer     nativo@vigoconsulting.com (mailto:nativo@vigoconsulting.com)

  Zeus (Nominated Adviser and Joint Broker)    Tel: +44 (0)20 3829 5000

  James Joyce

  James Bavister

  AlbR Capital Limited (Joint Broker)          Tel: +44 (0)20 7469 0930

  Duncan Vasey

  Lucy Williams

 Rose Greensmith

  Vigo Consulting (Investor Relations)         Tel: +44 (0)20 7390 0234

  Ben Simons                                   nativo@vigoconsulting.com (mailto:nativo@vigoconsulting.com)

  Peter Jacob

 Anna Sutton

 

About Nativo Resources plc

 

Nativo has interests in gold projects in Peru. The Company's strategy is based
on three core activities: primary gold mining, gold ore processing, and the
recovery of gold from tailings. The Company has already acquired or optioned
several projects for development and has identified additional opportunities
for expansion. Nativo's nearest-term objective is to scale operations on the
Tesoro Gold Concession, focusing on the Bonanza and Morrocota mines. Nativo
intends to allocate portions of free cash flow from mining and processing
activities and future fundraises to Bitcoin purchases, and to hold Bitcoin as
a long-term treasury reserve asset.

 

Follow us on social media:

 

LinkedIn: https://uk.linkedin.com/company/nativoresources-plc
(https://uk.linkedin.com/company/nativoresources-plc)

X (Twitter): https://x.com/nativoresources (https://x.com/nativoresources)

 

Qualified Persons Statement

 

The scientific and technical information contained within this announcement
has been reviewed and approved by Harold Villena Carhuaricra, a geological
engineer with over 15 years' experience. Mr Villena Carhuaricra has a master's
degree in Geological Processes and Resources from The Complutense University
of Madrid and is registered and certified by AusIMM Chartered Professionals.
Mr Villena Carhuaricra has worked for Cerro de Pasco Resources and Compañía
Minera Volcan among other companies in Peru. He is a Qualified Person as
defined by the AIM Guidance Note on Mining and Oil & Gas Companies dated
June 2009.

 

Glossary

 Au   gold
 g/t  grams per tonne

 km   kilometres

 

 

 

 

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