Total Voting Rights

Tharisa plc(Incorporated in the Republic of Cyprus with limited liability)(Registration number HE223412)JSE share code THA

LSE share code THSISIN CY0103562118(Tharisa)

Transfer of treasury shares and total voting rights

In compliance with the FCA's Disclosure and Transparency Rule 5.6.1, Tharisa hereby notifies the market that as at 31 May 2018, Tharisa has 261 000 000 issued ordinary shares of US$0.001 each admitted to trading.

During May 2018, Tharisa transferred 3 923 ordinary shares from its treasury shares account to satisfy the exercise of Appreciation Rights by the participants of the Tharisa Share Award Plan. Following these transactions, 260 216 383 shares have voting rights and 783 617 are held in treasury.

The total number of voting rights in Tharisa is therefore 260 216 383. This figure may be used by shareholders as the denominator for the calculations by which they will determine whether they are required to notify their interest in, or a change in their interest in Tharisa under the FCA's Disclosure and Transparency Rules.

Paphos, Cyprus

1 June 2018

JSE Sponsor

Investec Bank Limited

Investor Relations contact:

Tharisa plc

Sherilee Lakmidas

+27 11 996 3538

+27 79 276 2529

slakmidas@tharisa.com

Broker contacts:

Peel Hunt LLP (Joint Broker)

Ross Allister/James Bavister

+44 207 7418 8900

BMO Capital Markets Limited (Joint Broker)

Jeffrey Couch/Neil Haycock/Thomas Rider

+44 020 7236 1010

Financial PR contacts:

Bobby Morse/Anna Michniewicz

+44(0) 20 7466 5000

tharisa@buchanan.uk.com