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 'Group')

APPOINTMENT OF CHIEF FINANCE OFFICER DESIGNATE

Shareholders are referred to the announcement published on 3 February 2026, wherein shareholders were advised of Michael Jones' pending retirement from his position as Chief Finance Officer and executive director of Tharisa and its subsidiaries effective 31 July 2026.

In compliance with the JSE Listings Requirements, and following an extensive selection process, the board is pleased to announce the appointment of Jacques Breytenbach as Chief Finance Officer Designate with effect from 1 May 2026, and as Michael's successor as Chief Finance Officer and as executive director of the board with effect from 1 August 2026. This appointment provides for a comprehensive handover period to ensure continuity and stability within the finance function.

Jacques holds a B. Compt. (Hon)/CTA from the University of South Africa and is a qualified Chartered Accountant (South Africa). He is a seasoned Chief Finance Officer and non-executive director with over 25 years' experience in integrated mining operations including the diamond and PGM sectors across Africa. He has extensive experience in the listed environment, across both the Johannesburg and London stock exchanges, as well as capital structuring. His broader expertise encompasses the shaping of financial strategy, optimising return on investment, leading full financial functions across diverse geographies, including South Africa, Tanzania, and other geographies within Sub-Saharan Africa, debt and equity fundraising, and implementing robust governance frameworks and digital systems to support growth in multinational, asset-based organisations.

Jacques served as the Chief Financial Officer of Petra Diamonds Limited for eight years from 2016 to 2024, having previously served as Group Finance Manager between 2006 and 2016. Prior to this, he served as Finance Manager at Anglo American Platinum Limited (now Valterra Platinum Limited) from 2001 to 2006. He served as a non-executive director and member of the Audit Committee of Afrimat Limited, a JSE listed company, from 1 June 2025 to 21 April 2026.

Jacques' strong strategic and operational finance experience will add considerable value to the Tharisa Group.

The board confirms that, in compliance with paragraph 6.73 of the JSE Listings Requirements, a fit and proper assessment has been conducted and that the board is satisfied with the outcome thereof. Tharisa further confirms that there are no positive statements to report in respect of the integrity information contained in the director's declaration.

The board congratulates Jacques on his appointment and looks forward to the valuable contribution he will make to the Group.

The board wishes to place on record its sincere gratitude to Michael Jones for his exceptional and dedicated service as Chief Finance Officer over the past 13 years. His tenure has been defined by an unwavering commitment to the Tharisa Group that went far beyond the execution of his responsibilities, one that helped shape Tharisa into the integrated, resilient, and financially disciplined business it is today. The legacy he leaves is one of financial rigour and institutional strength, and the board extends its sincere appreciation for everything he has given to Tharisa, wishing him a well-earned and fulfilling retirement.

Paphos, Cyprus

22 April 2026

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 - delivering on expansion and growth opportunities, commercialising technology solutions

Tharisa is an integrated resource group playing a pivotal role in the global energy transition and the decarbonisation of economies. Leveraging innovation and technology, Tharisa covers the entire value chain - exploration, mining, processing, beneficiation, marketing, sales, and logistics - for PGMs and chrome concentrates. The low cost, multigenerational Tharisa Mine is located on the southwestern limb of the Bushveld Complex, South Africa, the largest source of PGMs and chrome globally. Development of the Karo Platinum Project, a tier-one PGM project on Zimbabwe's Great Dyke, further reinforces Tharisa's growth strategy. Investments in downstream beneficiation, including proven chrome and PGM alloy production, will add significant value when commercialised. Tharisa is committed to reducing carbon emissions by 30% by 2030 and the sustainability roadmap targets net carbon neutrality by 2050. Through Redox One, Tharisa is advancing proprietary iron-chromium redox flow battery technology, utilising the very commodities it mines to support long-duration energy storage - a key component in the transition to renewable energy.

Tharisa plc is listed on the Johannesburg Stock Exchange (JSE: THA) and the London Stock Exchange (LSE: THS, Equity Shares (Transition) Category).