Two New Porphyry Licences Awarded

Figure 1 - Piket Geological Map

Figure 2 - Piket Alteration Map

Figure 3 - Judzha Geological Map

Figure 4 - Judzha Alteration Map

SampleID

NAT_North

NAT_East

Project

Cu_ppm

Au_ppm

Ag_ppm

R10912

5257655

425142

Judzha

3.54

0.0011

0.512

R10913

5257542

424991

Judzha

5.17

0.0042

4.56

R10914

5257533

424996

Judzha

20.4

0.0028

0.58

R10915

5257426

424968

Judzha

2.49

0.022

0.346

R10916

5257410

424938

Judzha

9.02

0.0127

0.909

R10917

5257368

424923

Judzha

4.85

0.0062

0.317

R10918

5257282

424853

Judzha

14.6

0.0062

1.38

R10919

5257178

424627

Judzha

18.1

0.0035

0.163

R10920

5257109

424624

Judzha

6.82

0.0039

0.255

R10921

5257015

424599

Judzha

14.05

0.0079

0.518

R12740

5440784

370317

Piket

5.96

0.001

0.068

R12741

5440572

370330

Piket

6.98

0.001

0.101

R12742

5440568

370350

Piket

6.01

-0.001

0.074

R12743

5440430

370474

Piket

6.46

-0.001

0.095

R12744

5440562

370589

Piket

10.1

-0.001

0.183

R12745

5440511

370454

Piket

14.65

-0.001

0.214

R12746

5443817

374030

Piket

2.65

0.005

0.043

R12747

5442059

373060

Piket

3.12

0.003

0.029

R12748

5437583

371165

Piket

9.17

0.02

0.154

R12749

5437712

371109

Piket

32.1

0.113

0.101

R12750

5437686

371005

Piket

9.02

0.269

0.183

R12751

5438433

370159

Piket

46.4

0.018

0.394

Sampling techniques

· Nature and quality of sampling (e.g. cut channels, random chips, or specific specialised industry standard measurement tools appropriate to the minerals under investigation, such as down hole gamma sondes, or handheld XRF instruments, etc). These examples should not be taken as limiting the broad meaning of sampling.

· Include reference to measures taken to ensure sample representivity and the appropriate calibration of any measurement tools or systems used.

· Aspects of the determination of mineralisation that are Material to the Public Report.

· In cases where 'industry standard' work has been done this would be relatively simple (e.g. 'reverse circulation drilling was used to obtain 1 m samples from which 3 kg was pulverised to produce a 30 g charge for fire assay'). In other cases, more explanation may be required, such as where there is coarse gold that has inherent sampling problems. Unusual commodities or mineralisation types (e.g. submarine nodules) may warrant disclosure of detailed information.

· Samples were taken from fresh in situ outcrops at surface, where ever fresh outcrop showed features of interest such as veining, sulphides, oxide material and strong alteration

· Samples were taken until a standard sample bag was half filled - approximately 1 - 5 kg of material

· Mineralisation was identified by inspection of fresh surfaces of the samples, mineralisation included both sulphide and oxides

· Historical samples are not available at the time of this press release

Drilling techniques

· Drill type (e.g. core, reverse circulation, open-hole hammer, rotary air blast, auger, Bangka, sonic, etc) and details (e.g. core diameter, triple or standard tube, depth of diamond tails, face-sampling bit or other type, whether core is oriented and if so, by what method, etc).

· N/A

Drill sample recovery

· Method of recording and assessing core and chip sample recoveries and results assessed.

· Measures taken to maximise sample recovery and ensure representative nature of the samples.

· Whether a relationship exists between sample recovery and grade and whether sample bias may have occurred due to preferential loss/gain of fine/coarse material.

· N/A

Logging

· Whether core and chip samples have been geologically and geotechnically logged to a level of detail to support appropriate Mineral Resource estimation, mining studies and metallurgical studies.

· Whether logging is qualitative or quantitative in nature. Core (or costean, channel, etc) photography.

· The total length and percentage of the relevant intersections logged.

· N/A

Sub-sampling techniques and sample preparation

· If core, whether cut or sawn and whether quarter, half or all core taken.

· If non-core, whether riffled, tube sampled, rotary split, etc and whether sampled wet or dry.

· For all sample types, the nature, quality, and appropriateness of the sample preparation technique.

· Quality control procedures adopted for all sub-sampling stages to maximise representivity of samples.

· Measures taken to ensure that the sampling is representative of the in-situ material collected, including for instance results for field duplicate/second-half sampling.

· Whether sample sizes are appropriate to the grain size of the material being sampled.

· N/A

Quality of assay data and laboratory tests

· The nature, quality and appropriateness of the assaying and laboratory procedures used and whether the technique is considered partial or total.

· For geophysical tools, spectrometers, handheld XRF instruments, etc, the parameters used in determining the analysis including instrument make and model, reading times, calibrations factors applied and their derivation, etc.

· Nature of quality control procedures adopted (e.g. standards, blanks, duplicates, external laboratory checks) and whether acceptable levels of accuracy (i.e. lack of bias) and precision have been established.

· Nature, quality and appropriateness of assaying and laboratory procedures:

o  Samples analysed at ALS Karaganda (Kazakhstan), an ISO-compliant facility.

o  Multi-element suite by ME-MS41L (aqua-regia digestion, ICP-MS) - near-total for most elements, partial for refractory minerals; appropriate for early-stage exploration.

o  Gold by AU-ICP21 (30 g fire assay, ICP-AES finish) - total technique, industry standard.

o  HYP-PKG hyperspectral logging (HyLogger-3™) for alteration/lithology mapping - non-destructive and suitable for early exploration.

o  Techniques are considered fit-for-purpose for the exploration stage

· Geophysical tools, spectrometers, handheld XRF instruments

o  No geophysical tools or handheld XRF used for reported results.

o  Hyperspectral data acquired with HyLogger-3™ (380-14,500 nm); daily calibration with certified standards.

· Nature of quality control procedures adopted

o  At this early stage, no field duplicates, blanks or CRMs were inserted by the company.

o  Full reliance placed on ALS Karaganda internal laboratory QA/QC (reagent blanks, certified standards, duplicates and repeats inserted by the laboratory at regular intervals).

· Acceptable levels of accuracy and precision:

o  Laboratory internal QC results supplied with every batch showed all standards within acceptable limits, no significant bias, and duplicate precision typically <10 % RSD.

o  Accuracy and precision are considered acceptable for early-stage exploration reporting.

Verification of sampling and assaying

· The verification of significant intersections by either independent or alternative company personnel.

· The use of twinned holes.

· Documentation of primary data, data entry procedures, data verification, data storage (physical and electronic) protocols.

· Discuss any adjustment to assay data.

· N/A

Location of data points

· Accuracy and quality of surveys used to locate drill holes (collar and down-hole surveys), trenches, mine workings and other locations used in Mineral Resource estimation.

· Specification of the grid system used.

· Quality and adequacy of topographic control.

· Locations were surveyed using Garmin GPSMAP 62S handheld GPS device or mobile phone GPS device.

· Grid system WGS84, UTM43N.

· The quality and accuracy of handheld/mobile GPS devices is approximately 3 m in the X and Y directions and 12 m in the Z direction. The accuracy is considered acceptable for early-stage exploration

Data spacing and distribution

· Data spacing for reporting of Exploration Results.

· Whether the data spacing and distribution is sufficient to establish the degree of geological and grade continuity appropriate for the Mineral Resource and Ore Reserve estimation procedure(s) and classifications applied.

· Whether sample compositing has been applied.

· N/A

Orientation of data in relation to geological structure

· Whether the orientation of sampling achieves unbiased sampling of possible structures and the extent to which this is known, considering the deposit type.

· If the relationship between the drilling orientation and the orientation of key mineralized structures is considered to have introduced a sampling bias, this should be assessed and reported if material.

· N/A

Sample security

· The measures taken to ensure sample security.

· Sample security is unclear and cannot be verified by East Star.

Audits or reviews

· The results of any audits or reviews of sampling techniques and data.

· No audits were undertaken for this work.

Mineral tenement and land tenure status

· Type, reference name/number, location and ownership including agreements or material issues with third parties such as joint ventures, partnerships, overriding royalties, native title interests, historical sites, wilderness or national park and environmental settings.

· The security of the tenure held at the time of reporting along with any known impediments to obtaining a licence to operate in the area.

· The Judzha Exploration license (3724-EL) is registered to Discovery Ventures Kazakhstan Limited, an AIFC registered entity 100% owned by East Star Resources PLC. The license was awarded on 14 November 2025 and is valid for 6 years.

· The Piket Exploration license (3720-EL) is registered to Discovery Ventures Kazakhstan Limited, an AIFC registered entity 100% owned by East Star Resources PLC. The license was awarded on 10 November 2025 and is valid for 6 years.

· All requirements for owning the licenses, including insurances, have been fulfilled

· There are no known legal or security impediments to holding the exploration licenses and obtaining mining licenses.

Exploration done by other parties

· Acknowledgment and appraisal of exploration by other parties.

· Table of previously completed exploration at Piket

· Table of previously completed exploration at Judzha

Geology

· Deposit type, geological setting, and style of mineralisation.

· Judzha

o  The license area is hosted in volcanic-sedimentary sequences, with an intrusive breccia complex in the centre. The geology and alteration indicates an alkaline porphyry intrusion

o  While unknown at this stage, ESR is exploring for porphyry style mineralisation and associated deposits

· Piket

o  The license area is hosted in volcanic-sedimentary sequences intruded by monzonites, with an intrusive breccia complex in the centre. The geology and alteration indicates an alkaline porphyry intrusion

o  While unknown at this stage, ESR is exploring for porphyry style mineralisation and associated deposits

Drill hole Information

· A summary of all information material to the understanding of the exploration results including a tabulation of the following information for all Material drill holes:

o  easting and northing of the drill hole collar

o  elevation or RL (Reduced Level - elevation above sea level in metres) of the drill hole collar

o  dip and azimuth of the hole

o  down hole length and interception depth

o  hole length.

· If the exclusion of this information is justified on the basis that the information is not Material and this exclusion does not detract from the understanding of the report, the Competent Person should clearly explain why this is the case.

· N/A

Data aggregation methods

· In reporting Exploration Results, weighting averaging techniques, maximum and/or minimum grade truncations (e.g. cutting of high grades) and cut-off grades are usually Material and should be stated.

· Where aggregate intercepts incorporate short lengths of high-grade results and longer lengths of low-grade results, the procedure used for such aggregation should be stated and some typical examples of such aggregations should be shown in detail.

· The assumptions used for any reporting of metal equivalent values should be clearly stated.

· N/A

Relationship between mineralisation widths and intercept lengths

· These relationships are particularly important in the reporting of Exploration Results.

· If the geometry of the mineralisation with respect to the drill hole angle is known, its nature should be reported.

· If it is not known and only the down hole lengths are reported, there should be a clear statement to this effect (e.g. 'down hole length, true width not known').

· The nature of any potential ore bodies is not known at this stage of exploration.

Diagrams

· Appropriate maps and sections (with scales) and tabulations of intercepts should be included for any significant discovery being reported These should include but not be limited to a plan view of drill hole collar locations and appropriate sectional views.

· Relevant diagrams have been included in the body text.

Balanced reporting

· Where comprehensive reporting of all Exploration Results is not practical, representative reporting of both low and high grades and/or widths should be practiced to avoid misleading reporting of Exploration Results.

· N/A

Other substantive exploration data

· Other exploration data, if meaningful and material, should be reported including (but not limited to): geological observations; geophysical survey results; geochemical survey results; bulk samples - size and method of treatment; metallurgical test results; bulk density, groundwater, geotechnical and rock characteristics; potential deleterious or contaminating substances.

· N/A

Further work

· The nature and scale of planned further work (e.g. tests for lateral extensions or depth extensions or large-scale step-out drilling).

· Diagrams clearly highlighting the areas of possible extensions, including the main geological interpretations and future drilling areas, provided this information is not commercially sensitive.

· East star is planning to soil sample and analyse samples taken over the winter months in Kazakhstan

· Additional work programmes will be designed based on the outcomes of the soils