Arras Minerals CorpTSXV: ARK

Arras Minerals Drills 574 Metres @ 0.40% CuEq (0.23 g/T Au, 0.11% Cu, 0.76 g/T Ag, 38.84 PPM Mo) At Berezski Central And Intersects 22.8 Metres @ 5.37 g/T Au On The Newly Defined Epithermal Target At K-Ozek In Kazakhstan

· Issued by Arras Minerals Corp via CNW

VANCOUVER, BC, Oct. 8, 2026 /CNW/ -- Arras Minerals Corp. (TSXV: ARK) (OTCQB: ARRKF) ("Arras" or the "Company") is pleased to announce additional drill results from its ongoing 40,000-metre diamond drill program at the Elemes Project in Pavlodar Region, Kazakhstan. The results reported here are from the Berezski Central and K-Ozek targets and provide a much clearer picture of the scale and architecture of the Berezski Trend, where we now see multiple porphyry centres together with a well-preserved epithermal gold system.

Key Highlights:

  • Berezski Central
    • EL26042 returned 574m grading 0.40% CuEq from 98m, including 211m grading 0.62% CuEq from 433m with strong Cu-Mo-magnetite veins.
    • EL26041 drilled 707m grading 0.26% CuEq from 4m, including 142m grading 0.29% CuEq from 90 m, with sheeted quartz-chalcopyrite-molybdenite veins developed from 492m to 709m depth that returned 271m grading 0.31% CuEq.
    • The extent and type of mineralization intersected in holes EL26041 and EL26042 support an emerging large and extensive porphyry copper-gold system at the Berezski Central target.
  • K-Ozek
    • EL26029 intersected a broad zone grading 0.30 g/t Au over 229m grading from 2m, with a higher-grade core of 25m grading 1.11 g/t Au from 174m.
    • EL26039 drilled 22.8m grading 5.37 g/t Au from 124.2m, including 13.8m grading 8.84 g/t Au and 6.1m grading 17.0 g/t Au.
    • EL26044 returned 40m grading 0.83 g/t Au from 147m, including 2m grading 12.65 g/t Au.
    • The result from K-Ozek highlights a broad envelope of lower-grade gold mineralization with well-developed higher-grade gold zones above 1 g/t Au, and that mineralization occurs across several broad areas rather than being confined to a single isolated structure.

The K-Ozek target sits within a down-dropped block between Berezski Central and Berezski North. We believe this has preserved the higher-level epithermal part of the hydrothermal system that has largely been eroded away over the adjacent porphyry centres. This suggests that there may be another porphyry system preserved at depth beneath K-Ozek. This remains to be tested by drilling.

Tim Barry, CEO of Arras Minerals, commented "These results are really starting to bring the Berezski Trend together geologically. Hole EL26042 is an important hole for Berezski Central. Not only does it deliver another very broad copper-gold interval, but deeper in the hole we start to see a stronger Cu-Mo-magnetite vein assemblage that we would expect as we move further into the porphyry system.

What is particularly exciting is what we are now seeing at K-Ozek. We have intersected high-grade gold in a distinctly higher-level epithermal environment that sits in a down-dropped block between Berezski Central/Berezski East and Berezski North. In simple terms, that block appears to have preserved a part of the hydrothermal system that has been eroded away over the adjacent porphyry centres. That is important because it gives us a very clear geological question to test: if the epithermal system is preserved at K-Ozek, is the porphyry system still preserved beneath it?

We do not yet know the answer to that, and it will require drilling, but the geological model is compelling. Across more than seven kilometres we now have three substantial porphyry systems at or near surface, a preserved high-grade epithermal gold system between them, and the potential for another porphyry centre at depth. That is a very attractive exploration setting and one we intend to test systematically."

Emerging Geological Model – Berezski Central/Berezski East, K-Ozek and Berezski North

The emerging geological model for the Berezski Trend is relatively simple. Berezski Central/Berezski East and Berezski North deposits expose the deeper level of a porphyry system, while K-Ozek sits within a structurally down-dropped block that has preserved a shallower epithermal system overlying a deeper porphyry center. This remains an exploration concept and has not yet been confirmed by drilling.

Assay results reported in this news release include:

Table 3. Drill-hole locations

Hole_ID

Coordinates (UTM)

 

Easting

Northing

RL

Azimuth

Dip

Hole Depth (m)

EL26029

508082

5715447

231

298

-70

380.8

EL26039

508242

5715585

231

300

-50

455.0

EL26041

505854

5713471

240

118

-70

914.3

EL26042

506304

5713570

244

298

-65

833.1

EL26043

508341

5715708

233

300

-50

524.0

EL26044

508139

5715257

233

300

-50

451.8

EL26048

508161

5715063

235

300

-50

672.7

Drill-Hole Geological Summaries

Berezski Central Drill holes

EL26041 intersected a broad, 707m long mineralized interval starting at 4m depth. The upper part of the hole is dominated by argillic alteration, passing downward into stronger phyllic alteration with zones of local K-feldspar-magnetite alteration. The hole intersected porphyry-style mineralization at approximately 559.6m depth and consists of sheeted quartz-chalcopyrite-molybdenite veins that terminates at a shear zone at 706.3m, suggesting an offset in mineralization. The alteration and mineralization intersected in this hole is consistent with the argillic-phyllic margin of a porphyry system.

EL26042 intersected 574m grading 0.40% CuEq from 98 m, including a higher-grade zone returning 0.57% CuEq over 211m from 433m depth. The hole started in strongly argillic altered and brecciated diorites before passing into a wide zone of phyllic alteration before entering a feldspar porphyry with zones of silicification that contained stronger copper-molybdenum mineralization, that consisted of quartz-chalcopyrite-molybdenite and quartz-magnetite veins. The alteration and mineralization intersected in this hole is consistent with the phyllic-potassic zone adjacent to the core of the porphyry system.

K-Ozek Drill holes

EL26029 drilled argillic and phyllic altered andesites, with interbedded andesitic tuffs. Alteration was dominated by oxidation and argillic alteration from surface to approximately 80m depth, before passing into a zone of stronger phyllic alteration to the end of the drillhole. The hole intersected 229 m grading 0.30 g/t Au from 2m, including a 25m zone grading 1.11 g/t Au. Mineralization is characterized by pervasive quartz-sulphide-carbonate veins with several wide quartz-base metal sulphide veins hosted in fault zones. The mineral assemblage and alteration are consistent with a structurally focused, high-level epithermal environment.

EL26039 intersected a wide zone of high-grade gold mineralization returning 22.8m grading 5.37 g/t Au from 124.2m, including 13.8m grading 8.84 g/t Au and 6.1m grading 17.0 g/t Au. The high-grade gold mineralization occurs near the transition from argillic volcanic and breccia units. The alteration style and strong structural control are consistent with a high-level epithermal environment.

EL26043 returned several narrow gold-bearing intervals, including 2m grading 1.19 g/t Au from 144m. The hole is dominated by oxidized to hematitic, argillic andesite and breccia cut by repeated faults and hydrothermal structures. The hole defines a broad pyrite-dominant argillic to phyllic alteration and helps delineate the wider mineralized footprint surrounding higher-grade structures.

EL26044 intersected several gold-bearing zones, including 40m grading 0.83 g/t Au from 147m, including 2m grading 12.65 g/t Au, and a second 49m zone grading 0.36 g/t Au from 351m. Mineralization is characterized by pervasive pyrite mineralization with zones of pyrite-rich breccias and quartz-pyrite-arsenopyrite veins containing minor chalcopyrite, sphalerite, galena and molybdenite. Alteration is dominantly argillic with local zones of phyllic. The repeated brecciation, faulting and veining indicate a structurally controlled epithermal system.

EL26048 intersected 317.8m grading 0.15 g/t Au from 40.2m depth including a 40m wide gold zone grading 0.39 g/t Au from 263m. The hole alternates between strongly argillic altered diorites and faulted and fractured volcanic andesites. Mineralization consists of stockwork fine sulphide veinlets, and mineralization is similar to hole EL26029, with pervasive quartz-sulphide-carbonate veins and is consistent with a structurally focused, high-level epithermal system.

Exploration Update

Four diamond drill rigs are currently operating at Elemes. KGK (top-of-bedrock) assay results remain pending from the area north of Berezski North and from the Aimandai Trend, approximately 7 km east of the Berezski Trend. Laboratory turnaround times have extended materially over the past six months, reaching up to approximately 150 days due largely to increased sample volumes together with customs and logistics considerations. Turnaround times appear to be gradually improving.

Stock Option Grant

The Company's Board of Directors has authorized, pursuant to its Equity Incentive Plan, the grant of 5,605,000 stock options ("Options") to certain directors, officers, employees and advisors, effective prior to the start of trading on September 29, 2026 ("Grant Date"). Each Option entitles the grantee to purchase one common share (each, a "Share") in the capital of the Company. The Options were awarded at an exercise price of C$1.33 per Share for a five-year term. The Options vest over 3 years, with 1/3 of the Option vesting immediately, 1/3 vesting on September 29, 2027 and 1/3 vesting on September 29, 2028.

Elemes Project Overview: The Elemes Project comprises two exploration licences covering 531 square kilometres in northeastern Kazakhstan, approximately 13 km southwest of Ekibastuz and about 20 km from Arras's operational base. The project benefits from established infrastructure, including a paved highway crossing the licence area and access to power, heavy rail and other utilities within approximately 15 km.

Situated within the prolific Bozshakol-Chingiz metallogenic belt, Elemes lies near significant regional deposits, including the Beskauga porphyry copper-gold-silver deposit (~80 km east) and KAZ Minerals' Bozshakol copper-gold mine (~60 km northwest), which reported mined grades in Q1 2025 of 0.37% copper and 0.20 g/t gold.1

Geologically, the property is underlain by interbedded intermediate volcanic and sedimentary rocks intruded by multiple phases of diorite and monzodiorite porphyry. Copper-gold mineralization occurs in sheeted and stockwork quartz-chalcopyrite veins associated with these intrusions. High-grade low-sulphidation epithermal veins have also been mapped on the property and represent an additional exploration target.

Property-wide soil sampling programs defined two extensive Cu-Mo-As geochemical trends: Berezski and Aimandai. A Phase 1 drill program on the Berezski Trend in late 2024 returned porphyry- and epithermal-style copper-gold mineralization, with results announced in Q1 2025. Approximately 10,000 metres of diamond drilling was completed in 2025 and a further 40,000 metres of drilling is expected to be completed by the end of 2026.

References
1Bozshakol Q3, 2025 Report
https://kazminerals.com/app/uploads/2025/12/q3-2025-production-report_final.pdf

Quality Assurance and Quality Control

The Company adheres to CIM Best Practices Guidelines for exploration-related activities conducted on its property. Quality Assurance and Quality Control (QA/QC) procedures are overseen by the Qualified Person.

Arras Minerals QA/QC protocols are maintained through the insertion of certified reference material (standards), blanks and field duplicates within the sample stream. Drill core is cut at Arras Minerals' operations base in Ekibastuz, Kazakhstan by Company personnel. Diamond drill core was sawn in half with a diamond saw and sampled at maximum 2-metre intervals, stopping at geological boundaries, with one-half placed in sealed bags and shipped to the laboratory and the other half retained on site.

Each bagged core sample was shipped to ALS Laboratory in Karaganda, Kazakhstan. Samples were dried, crushed and pulverized to >80% passing -200 mesh. The prepared sample splits were sent to the ALS Chemex geochemical laboratories in Loughrea, County Galway, Ireland and Lima, Peru for multi-element analysis. Multi-element analyses were completed by ICP-MS following a four-acid digestion (method ME-MS61) and samples containing >1.0% copper were analyzed via method Cu-OG62.

Gold analysis was conducted by ALS Chemex at the analytical laboratory in Karaganda, Kazakhstan. Gold was analyzed by fire assay (30 g) with an AA (atomic absorption) finish (method Au-AA23) with detection limits of 0.005 g/t gold. Samples containing greater than 10.0 g/t gold were analyzed by fire assay with a gravimetric finish (method Au-GRA21).

ALS is an accredited laboratory that is independent of the Company. Chain of custody is maintained from the drill to the submission to the laboratory preparation facility.

Qualified Person

The scientific and technical disclosure for this news release has been prepared under the supervision of and approved by Matthew Booth, Vice President of Exploration, of Arras Minerals Corp., a Qualified Person for the purposes of NI 43-101. Mr. Booth has reviewed and approved this release. Mr. Booth has over 20 years of mineral exploration experience and is a Qualified Person and a member of the American Institute of Professional Geologists (CPG 12044).

Copper Equivalent (CuEq): Copper equivalent grades are calculated by converting the recovered value of gold, silver and molybdenum into an equivalent copper grade and adding those contributions to the copper grade and then a copper recovery is applied. The calculation uses assumed metal prices of US$3.75/lb Cu, US$3,000/oz Au, US$35/oz Ag and US$30/lb Mo, together with assumed metallurgical recoveries of 90% Cu, 85% Au, 75% Ag and 80% Mo. Each metal contribution is adjusted for its respective recovery and converted to the amount of copper that would have an equivalent recovered value.

Copper Equivalent ("CuEq") grades reported for the drill holes at Elemes were calculated using the following formula: CuEq % = ((Copper (%)) + ((Gold (g/t) x 0.8571) x 0.85) + ((Silver (g/t) x 0.0117) x 0.75) + ((Molybdenum (%) x 0.857) x 0.80).

Gold Equivalent ("AuEq") grades reported for the drill holes at Elemes were calculated using the following formula: AuEq g/t = ((Gold (g/t) + ((Copper (%) x 1.1667) x 0.9) + ((Silver (g/t) x 0.0136) x 0.75) + ((Molybdenum (%) x 6.8568) x 0.80).

On behalf of the Board of Directors,

"Tim Barry"
Tim Barry, MAusIMM CP(Geo)
Chief Executive Officer and Director 

Further information can be found on:

About Arras Minerals Corp

Arras is a Canadian exploration and development company advancing a portfolio of copper and gold assets in northeastern Kazakhstan, including the Elemes copper-gold porphyry project, where initial drill results in 2025 identified porphyry-style mineralization across a 10 km strike length. The Company has established one of the country's largest land packages prospective for copper and gold. The Company's shares are listed on the TSX-V under the trading symbol "ARK" and on the OTCQB under the trading symbol "ARRKF".

Cautionary note regarding forward-looking statements

This news release contains forward-looking statements regarding future events and Arras' future results that are subject to the safe harbors created under the U.S. Private Securities Litigation Reform Act of 1995, the Securities Act of 1933, as amended, and the Exchange Act, and applicable Canadian securities laws. Forward-looking statements include, among others, statements regarding plans and expectations of the exploration program Arras is in the process of undertaking, the timing, scope, nature, breadth and other information related to Arras' exploration program, any results that may be derived from Arras' exploration program, the prospects of Arras' business plans, and any expectations with respect to any permitting, development or other work that may be required to bring any of the projects into development or production. These statements are based on current expectations, estimates, forecasts, and projections about Arras' exploration projects, the industry in which Arras operates and the beliefs and assumptions of Arras' management. Words such as "expects," "anticipates," "targets," "goals," "projects," "intends," "plans," "believes," "seeks," "estimates," "continues," "may," variations of such words, and similar expressions and references to future periods, are intended to identify such forward-looking statements. Forward-looking statements are necessarily based upon a number of assumptions that, while considered reasonable by management at the time, are inherently subject to business, market and economic risks, uncertainties and contingencies that may cause actual results, performance or achievements to be materially different from those expressed or implied by forward-looking statements. Such assumptions include, but are not limited to, assumptions that the anticipated benefits of Arras' proposed exploration program will be realized, that no additional permits or licences will be required in connection with Arras' exploration programs, the ability of Arras to complete its exploration activities as currently expected and on the currently anticipated timelines, that Arras will be able to execute on its current plans, that Arras' proposed explorations will yield results as expected, and that general business and economic conditions will not change in a material adverse manner. Although Arras has attempted to identify important factors that could cause actual results to differ materially from those contained in forward-looking information, there may be other factors that cause results not to be as anticipated, estimated or intended. There can be no assurance that such information will prove to be accurate, as actual results and future events could differ materially from those anticipated in such statements. Accordingly, readers should not place undue reliance on forward-looking information. Such statements represent the current view of Arras with respect to future events and are necessarily based upon a number of assumptions and estimates that, while considered reasonable by Arras, are inherently subject to significant business, economic, competitive, political and social risks, contingencies and uncertainties. Risks and uncertainties include, but are not limited to the following: inability of Arras to realize the benefits anticipated from the exploration and drilling targets described herein or elsewhere; inability of Arras to complete current exploration plans as presently anticipated or at all; inability of Arras to economically realize the benefits, if any, derived from the exploration program; failure to complete business plans as currently anticipated; overdiversification of Arras' portfolio; failure to realize on benefits, if any, of a diversified portfolio; unanticipated changes in market price for Arras shares; changes to Arras' current and future business and exploration plans and the strategic alternatives available thereto; growth prospects and outlook of the business of Arras; and the ability to advance Arras' projects and its proposed exploration program; risks inherent in mineral exploration including risks related to worker safety, weather and other natural occurrences, accidents, availability of personnel and equipment, and other factors; aboriginal title; failure to obtain regulatory and permitting approvals; no known mineral resources/reserves; reliance on key management and other personnel; competition; changes in laws and regulations; uninsurable risks; delays in governmental and other approvals, community relations; stock market conditions generally; demand, supply and pricing for uranium; and general economic and political conditions in Canada, Kazakhstan and other jurisdictions where Arras conducts business. Other factors that could materially affect such forward-looking information are described in the filings of Arras with the Canadian securities regulators which are available on Arras' profile on SEDAR+ at www.sedarplus.ca. Readers are cautioned that forward-looking statements are not guarantees of future performance and that actual results or developments may differ materially from those expressed or implied in the forward-looking statements. Any forward-looking statement made by Arras in this release is based only on information currently available and speaks only as of the date on which it is made. Arras undertakes no obligation to publicly update any forward-looking statement, whether written or oral, that may be made from time to time, whether as a result of new information, future developments, or otherwise.

Attached document

Page 1

KAZ Minerals International FZCO Unit 3402, Platinum Tower, Plot JLT-PH1-I2 Jumeirah Lakes Towers, Dubai United Arab Emirates

1 8 December 202 5

KAZ MINERALS GROUP PRODUCTION AND SALES REPORT FOR 9 MONTHS AND THE THIRD QUARTER ENDED 3 0 SEPTEMBER 202 5

9m9m
20252024
Copper production1kt275.7287.0
Aktogaykt171.6172.2
Bozshakolkt70.779.2
East Region & Bozymchakkt33.435.6
Gold production2koz95.7110.9
Silver production2koz2,7302,750
Zinc in concentratekt34.331.3
Copper sales3kt252.8295.0
Gold sales4koz95.6120.4
Silver sales4koz2,7163,014
Zinc in concentrate saleskt35.935.7
Q3 2025Q2 2025Q3 2024
91.793.696.1
56.858.858.3
23.124.225.8
11.810.612.0
33.131.635.0
955891875
13.911.18.8
76.895.791.9
30.632.336.4
8539681,126
15.410.910.4

1Payable metal in concentrate and copper cathode from Aktogay oxide ore

2Payable metal in concentrate

3Payable metal in concentrate, toll processed metal and copper cathode from Aktogay oxide ore

4 Payable metal in concentrate and toll processed metal

Highlights

▪ Aktogay and Bozshakol achieved record ore processing volumes in the first nine months of 2025, reflecting the Group’s focus on maximising throughput.

▪ Copper output was 276 kt in the period to 30 September 2025, down 4% from 9m 2024 (287 kt) as higher throughput was offset by lower grades and recovery rates.

▪ Zinc in concentrate rose 10% to 34 kt (9m 2024: 31 kt) as more polymetallic ore was processed at East Region. Precious metal output declined due to mining in lower-grade areas.

▪ Copper sales of 253 kt were 8% below production, impacted by Q3 inventory build-up and short-term transit delays in September, which eased in October and November.

Andrei Tretyakov, Chief Executive Officer, said: “In 2025 KAZ Minerals has continued to set new records in ore throughput at Aktogay and Bozshakol, enabling the Group to produce 276 kt of copper in the first nine months of the year despite planned reductions in grades. Demand for copper remains strong, and KAZ Minerals is well positioned to supply reliable, responsibly produced copper to our customers while we continue to improve the performance and resilience of our operations.”

Page 2

For further information please contact:

KAZ Minerals
Maksut ZhapabayevCorporate Communications, AlmatyTel: +7 727 244 03 53
Gillian LittleCompany Secretary, DubaiTel: +971 4 560 5100

REGISTERED OFFICE

Unit No: 3402, Platinum Tower, Plot No: JLT-PH1-I2, Jumeirah Lakes Towers, Dubai, United Arab Emirates

NOTES TO EDITORS

KAZ Minerals International FZCO (“KAZ Minerals” or “the Group”) is a copper producer focused on large scale, low cost open pit mining in Kazakhstan. The Group operates the Aktogay and Bozshakol open pit mines in the Abay and Pavlodar regions of Kazakhstan, three underground mines with concentrators in the Abay and East regions of Kazakhstan, and the Bozymchak copper-gold mine in Kyrgyzstan.

In 2024, KAZ Minerals produced 380 kt of copper, along with 146 koz of gold, 3,728 koz of silver and 43 kt of zinc in concentrate. Its major operations at Aktogay and Bozshakol have driven industry-leading growth, establishing the Group as a company centred on world class open pit copper mines.

KAZ Minerals employs around 14,000 people across Kazakhstan and Kyrgyzstan.

Page 3

AKTOGAY

9m9mQ3Q2Q3
20252024202520252024
Ore extraction61,41364,63121,08620,84222,636
Oxide4,2329,6876682,1992,984
Sulphide57,18154,94420,41818,64319,652
Oxide
Oxide ore to leach pads4,2329,6876682,1992,984
Grade%0.240.260.280.23
Copper cathodekt11.814.14.34.1
Sulphide
Sulphide ore processed46,73043,16515,85915,71014,740
Sulphide 123,21820,8408,1627,6337,168
Sulphide 223,51222,3257,6978,0777,572
Average grade processed%0.410.440.400.41
Recovery rate%87.387.986.189.1
Copper in concentratekt167.3165.554.957.3
Copper production1kt159.8158.152.554.7
Total copper production2kt171.6172.256.858.8
Silver production1koz979998325326
Molybdenum in concentrate productiont3,3072,9941,1661,132

1 Payable metal in concentrate

2 Payable metal in concentrate and copper cathode from Aktogay oxide ore

Ore extraction at Aktogay fell 5% to 61,413 kt in the first nine months of 2025 (9m 2024: 64,631 kt) as mining focused on stripping to prepare new areas for future extraction. Oxide ore extraction declined versus Q2 as the resource nears depletion. Sulphide ore extraction rose 10% in Q3 to 20,418 kt (Q3 2024: 18,643 kt), driven by higher volumes of lowgrade ore mined to access deeper horizons.

Sulphide ore processing reached 46,730 kt in 9m 2025, up 8% year-on-year (9m 2024: 43,165 kt), with both concentrators achieving record throughput. Sulphide 1 processed 23,218 kt, 11% higher than 9m 2024 (20,840 kt), supported by improved milling rates. Sulphide 2 throughput in Q3 fell 5% to 7,697 kt (Q2: 8,077 kt) due to a scheduled SAG mill reline in August.

Copper production from sulphide ore was 159.8 kt, slightly above 9m 2024 (158.1 kt), as higher throughput and strong recoveries offset lower grades (0.41% vs 0.44%). Copper cathode from oxide ore dropped 16% to 11.8 kt (9m 2024: 14.1 kt) due to reduced ore volumes and grades. Q3 cathode output rose 5% to 4.3 kt (Q2: 4.1 kt) on higher grades (0.28% vs 0.23%) and warmer temperatures.

Total copper production was 171.6 kt, broadly in line with 9m 2024 (172.2 kt), reflecting strong operating performance despite lower grades. Silver output in Q3 was 325 koz (Q2: 326 koz); 9m production fell 2% to 979 koz (9m 2024: 998 koz) on lower grades. Molybdenum output rose 10% to 3,307 t (9m 2024: 2,994 t) on improved grades.

Page 4

BOZSHAKOL

9m9mQ3Q2Q3
20252024202520252024
Ore extractionkt26,18626,1737,9408,469
Sulphidekt21,66421,8576,5957,261
Claykt4,5224,3161,3451,208
Ore processedkt26,67025,9838,6288,671
Copper
Average copper grade processed%0.380.410.390.38
Copper recovery rate%73.478.272.573.3
Copper in concentratekt74.083.024.225.3
Copper production1kt70.779.223.124.2
Gold
Average gold grade processedg/t0.190.220.180.19
Gold recovery rate%43.247.746.441.2
Gold in concentratekoz69.987.023.123.1
Gold production1koz65.481.321.621.6
Silver production1koz540674159197

1 Payable metal in concentrate.

Ore extraction in the period to 30 September 2025 was 26,186 kt, broadly flat versus 9m 2024 (26,173 kt). Q3 extraction fell 13% from Q2 (9,171 kt) due to planned sulphide plant maintenance reducing direct ore feed needs; the fleet focused on stripping to prepare future ore faces.

Total ore processed rose 3% to 26,670 kt (9m 2024: 25,983 kt), with both the sulphide and clay concentrators operating above design capacity. Operational improvements boosted plant availability and milling rates, delivering record nine-month throughput. Q3 throughput fell 6% to 8,628 kt (Q2: 9,159 kt) as the sulphide plant underwent a scheduled SAG mill reline in September.

Copper output dropped 11% to 70.7 kt (9m 2024: 79.2 kt) as lower grades (0.38% vs 0.41%) and reduced recoveries (73.4% vs 78.2%) offset strong processing volumes. Complex ore mineralogy impacted recoveries. Q3 copper production was 23.1 kt, down 5% from Q2 (24.2 kt) on lower throughput and recoveries.

Gold output in Q3 was 21.6 koz, flat quarter-on-quarter, but 9m production fell 20% to 65.4 koz (9m 2024: 81.3 koz) due to lower grades and recoveries. Silver production declined 20% to 540 koz (9m 2024: 674 koz), reflecting lower grades and recovery rates at both plants.

Page 5

EAST REGION & BOZYMCHAK

9m9m
20252024
Ore extractionkt2,5782,489
Ore processedkt2,6432,579
Copper
Average grade processed%1.521.63
East Region%1.892.07
Bozymchak%0.650.64
Average recovery rate%87.689.4
East Region%87.990.4
Bozymchak%85.482.0
Copper in concentratekt35.337.5
East Regionkt30.933.4
Bozymchakkt4.44.1
Copper production1kt33.435.6
East Regionkt29.331.7
Bozymchakkt4.13.9
Gold production1koz28.229.6
Silver production1koz1,2111,078
Zinc in concentratekt34.331.3
Q3 2025Q2 2025Q3 2024
879855809
965884820
1.481.471.74
1.801.822.23
0.700.620.68
87.286.588.6
87.386.990.2
86.284.176.9
12.511.312.7
10.89.911.4
1.71.41.3
11.810.612.0
10.39.310.8
1.51.31.2
11.38.79.0
471368309
13.911.18.8

1 Payable metal in concentrate

Ore extraction in the first nine months of 2025 was 2,578 kt, up 4% year-on-year (9m 2024: 2,489 kt), driven by higher volumes from Artemyevsky (+9%) and Bozymchak (+10%). Q3 extraction rose 3% to 879 kt (Q2: 855 kt) on increased output at Orlovsky.

Ore processed in the period to 30 September was 2,643 kt, 2% higher than 9m 2024 (2,579 kt), supported by increased feed from Artemyevsky at the Nikolayevsky concentrator. This was partly offset by an 8% drop in volumes at Orlovsky due to lower ore extraction.

Copper production fell to 33.4 kt (9m 2024: 35.6 kt), mainly due to lower grades at Orlovsky (2.88% vs 3.19%) and reduced recoveries. Nikolayevsky output was stable as higher throughput offset weaker recoveries. Bozymchak delivered 4.1 kt, up 5% (9m 2024: 3.9 kt) on better grades and recoveries, with processing volumes unchanged.

Gold production was 28.2 koz, down 5% (9m 2024: 29.6 koz), with Bozymchak contributing 19.6 koz, 10% lower (9m 2024: 21.8 koz) due to reduced grades. East Region produced 8.6 koz, up 10% (9m 2024: 7.8 koz) on higher throughput, grades and recoveries. Q3 gold output rose 30% vs Q2 (8.7 koz) on improved volumes and grades.

Silver production increased 12% to 1,211 koz (9m 2024: 1,078 koz), driven by higher ore volumes and better grades at Nikolayevsky. Zinc in concentrate output rose 10% to 34.3 kt (9m 2024: 31.3 kt) on higher throughput, grades and recoveries.

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