Tharisa plc

(Incorporated in the Republic of Cyprus with limited liability)

(Registration number HE223412)

JSE share code: THA

LSE share code: THS

A2X share code: THA

ISIN: CY0103562118

LEI: 213800WW4YWMVVZIJM90

('Tharisa' or the 'Company' or the 'Group')

PRODUCTION REPORT FOR THE FOURTH QUARTER AND YEAR ENDED 30 SEPTEMBER 2025

Tharisa, the mining, metals, and innovation company dual-listed on the Johannesburg and London stock exchanges, announces its production results for Q4 and financial year ended FY2025^[1] and cash balance as at the year end.

Highlights

‒     Lost Time Injury Frequency Rate ('LTIFR') per 200 000 man hours worked of

§ 0.03 at Tharisa Minerals

§ 0.00 at Karo Platinum

‒     Output:

‒     PGM production for the year at 138.3 koz (FY2024: 145.1 koz) with strong growth in PGM production in Q4, up 19.7% to 41.3 koz (Q3 FY2025: 34.5 koz)

‒     Chrome production for the year at 1 558.2 kt (FY2024: 1 702.6 kt) and Q4 chrome production up 2.9% to 407.2 kt (Q3 FY2025: 395.7 kt)

‒     Strong quarterly performance was driven by all key metrics trending higher, namely mining, milling, grade and recovery for both commodities

‒     Pricing:

‒     Average annual PGM price increase of 18.6% to US$1 615/oz (FY2024: US$1 362/oz), with a very strong price increase of 24.1% to US$1 953/oz for the quarter (Q3 FY2025: US$1 574/oz)

‒     Average annual metallurgical grade chrome concentrate prices contracted by 11.0% to US$266/t (FY2024: US$299/t) while also averaging lower in the quarter at US$276/t (Q3 FY2025: US$293/t)

‒     Announced the Tharisa Mineral's phased transition to underground mining, commencing in the west pit and achieving steady state by FY2029 with east pit portal development reaching steady state by FY2033 - ensuring long term sustainability by unlocking the multi-generational resource endowment

‒     Committed transitional capital for the dual project development over the next ten-year period of US$547m, entrenching our robust co-production, low cost business model and continued investment in our mining eco system, empowering all stakeholders

‒     Successful share buyback continuing with approximately one third left under existing US$5m authority

‒     Group cash on hand of US$173.0 million (30 June 2025: US$164.6 million), and debt of US$104.4 million (30 June 2025: US$121.5 million), resulting in a net cash position of US$68.6 million (30 June 2025: US$43.1 million).

‒     Production guidance for FY2026 is set at between 145 koz and 165 koz PGMs (6E basis) and
1.50 Mt to 1.65 Mt of chrome concentrates

Phoevos Pouroulis, CEO of Tharisa, commented:

"We closed the year on a strong note, delivering robust production results in the final quarter. This performance reflects the resilience of our operations, the dedication of our teams on the ground, and the effectiveness of the strategic investments we have made throughout the year, complemented by yet another pleasing safety performance through all our operations.

Our continued investment in fixed assets - highlighted by the US$547 commitment  to unlocking multi-generational underground life at our flagship Tharisa Mine - reflects our unwavering commitment to ensuring safety, operational efficiency, and the sustainability of our operations. In a dynamic mining landscape, these long-term capital investments are essential to unlocking resource potential, enhancing productivity, and securing value for future generations.

Our commodities continue to benefit from strong underlying fundamentals. Global demand trends, coupled with a constrained and complex supply response, have resulted in a market that is well-supported and structurally balanced. This equilibrium underpins our positive outlook as highlighted in our continued long-term investment in our strategic assets.

We continue to see compelling growth opportunities in our business, with material advances, despite measured capital allocation, at Karo. Our expansion aspirations are carefully calculated and aligned with our disciplined capital allocation policy, ensuring that we prioritise long-term value creation, balance sheet strength, and sustainable returns for our shareholders."

Health & Safety

‒     The health and safety of our stakeholders remains a core value to the Group and Tharisa continues to strive for zero harm at its operations with an LTI free quarter being achieved

‒     LTIFR per 200 000 man hours worked of

§ 0.03 at Tharisa Minerals

§ 0.00 at Karo Platinum

Market Update

‒     The PGM market and in particular platinum has been one of the strongest commodity price performers in 2025, with the continued deficits, constrained supply, and tightening stocks acting as strong tailwinds. Palladium, however, faces a more delicate balance, while the minor metals have seen good price support driven by healthy supply demand fundamentals, which should see continued support for current prices

‒     Chrome prices remain stable due to the balanced market, across ore and concentrates.
We maintain that sustained demand will come from the stainless steel segment, coupled with constrained supply growth providing continued support to the pricing environment

Operational Update

‒     Annual reef mined was up 15.3% as pit flexibility continued to improve post remediation plans put in place 24 months ago, with total reef tonnes mined at 5 353.8 kt, completed by an improvement in quarterly mining, up 2.9% at 1 486.7 kt (Q3 FY2025: 1 444.9 kt)

‒     Reef milled for the year was steady and close to nameplate capacity at 5 555.7 kt while quarterly milling was at capacity at 1 429.6 kt (Q3 FY2025: 1 389.9 kt)

‒     PGM production for the year at 138.3 koz (FY2024: 145.1 koz) with strong growth in PGM production in Q4, up 19.7% to 41.3 koz (Q3 FY2025: 34.5 koz), at an improved rougher feed grade of 1.42 g/t (Q3 FY2025: 1.34 g/t) and recovery of 80.7%
(Q3 FY2025: 74.9%)

‒     Chrome production for the year at 1 558.2 kt (FY2024: 1 702.6 kt) and Q4 chrome production up 2.9% to 407.2 kt (Q3 FY2025: 395.7 kt), at a  grade of 15.7% Cr₂O₃
(Q3 FY2025: 16.0%) and recovery at 74.0% (Q3 FY2025: 72.4%)

‒     Karo Platinum infrastructure work continuing with ball mills being delivered and installed on site while work is continuing at the Chirundazi Dam expansion

Cash Balance and Debt Position

Group cash on hand of US$173.0 million (30 June 2025: US$164.6 million), and debt of US$104.4 million (30 June 2025: US$121.5 million), resulting in a net cash position of US$68.6 million (30 June 2025: US$43.1 million).

Tax Court

Favourable Tax Court judgement over mining royalties dispute, dating back to 2015, with potential positive impact to earnings, with detailed recalculation in progress.

Guidance

Production guidance for FY2026 is set at between 145 koz and 165 koz PGMs (6E basis) and 1.50 Mt to 1.65 Mt of chrome concentrates

The above forward-looking statements have not been reported on or reviewed by Tharisa's auditors and is the responsibility of the directors.

Paphos, Cyprus

14 October 2025

JSE Sponsor

Investec Bank Limited

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Investor Relations Contacts:

Ilja Graulich (Head of Investor Relations and Communications)

+27 11 996 3500

+27 83 604 0820

[email protected]

Broker Contacts:

Peel Hunt LLP (UK Joint Broker)

Ross Allister / Georgia Langoulant

+44 207 418 8900

BMO Capital Markets Limited (UK Joint Broker)

Thomas Rider / Nick Macann

+44 207 236 1010

Berenberg (UK Joint Broker)

Matthew Armitt / Jennifer Lee / Detlir Elezi

+44 203 207 7800

About Tharisa

Tharisa is an integrated resource group critical to the energy transition and decarbonisation of economies. It incorporates exploration, mining, processing and the beneficiation, marketing, sales, and logistics of PGMs and chrome concentrates, using innovation and technology as enablers. Its principal operating asset is the multi-generational Tharisa Mine, located in the south-western limb of the Bushveld Complex, South Africa. Tharisa is also developing the Karo Platinum Project, a tier-one PGM asset located on the Great Dyke in Zimbabwe, while simultaneously focusing on beneficiation in the form of chrome and PGM alloys. A 15-year Power Purchase Agreement for the procurement of wheeled renewable energy and a 40 MW solar project will ensure that Tharisa Minerals' drive to reduce its carbon footprint by 30% by 2030 is well within reach, forming a major part of a roadmap to become net carbon neutral by 2050. Redox One is accelerating the development of a proprietary iron chromium redox flow long-duration battery utilising the commodities we mine. Tharisa plc is listed on the Johannesburg Stock Exchange (JSE: THA) and has an Equity Shares (Transition) Category listing on the London Stock Exchange (LSE: THS).