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')

Resignation and appointment of non-executive directors

In compliance with Section 3.59 of the Listings Requirements of the JSE Limited, the Tharisa Board of Directors ('the Board') hereby announces that Mr Zhongliang Hong has resigned as a non-executive director and member of the Risk and Climate Change and Sustainability Committees with effect
from 30 September 2023.

The Board is pleased to announce that Mr Chen Hao has been appointed to the Board as a non-executive director with effect from 1 October 2023.

Mr Chen, a Chinese national, represents Fujian Wuhang Stainless Steel Co Limited ('Fujian Wuhang'), which holds 8.8% of Tharisa's issued share capital with voting rights as at 31 August 2023.

Mr Chen holds a bachelor's degree in Micro-electronics from Fudan University, Shanghai, China. He has more than 18 years' experience as an Engineer, Foreign Trade Manager and General Manager. He has been the General Manager at Fujian Liju Logistics Company in China since September 2014. Prior to this position, he had been a Foreign Trade Manager at Guangxi Shenglong Metallurgy Co., Ltd., China between December 2013 and August 2014, and an Engineer at APEX Information Services in the USA from August 2012 to November 2013. He had also held the position of Engineer at Calvin Wireless, New York, USA between February 2012 and July 2012. Between August 2006 and January 2012, he had held two Research Assistant positions, the first at the University of Viginia, USA (August 2006 to December 2009) and at the Tandon School of Engineering, at the University of New York, USA (January 2010 to January 2012). Following his graduation in July 2005, he had worked as Experimental Technician at the Shanghai Institute of Microsystem and Information Technology at the Chinese Academy of Sciences until July 2006.

Mr Chen will be serving on the Risk and Climate Change and Sustainability Committees of Tharisa.

The Board welcomes Mr Chen and looks forward to his contribution.

Paphos, Cyprus

28 September 2023

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

igraulich@tharisa.com

Broker Contacts:

Peel Hunt LLP (UK Joint Broker)

Ross Allister / Georgia Langoulant

+44 207 7418 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 Tharisa Mine, located in the south-western limb of the Bushveld Complex, South Africa. The mechanised mine has an 18 year pit life and can extend operations underground by at least 40 years. Tharisa also owns Karo Platinum, a low-cost, open-pit PGM asset under construction and located on the Great Dyke in Zimbabwe. The Company is committed to reducing its carbon emissions by 30% by 2030 and the development of a roadmap is continuing to be net carbon neutral by 2050. Tharisa plc is listed on the Johannesburg Stock Exchange (JSE: THA) and the Main Board of the London Stock Exchange (LSE: THS).