Date of purchase: 26 April 2021

Aggregate number of ordinary shares purchased: 34,951

Lowest price paid per share (pence per share): 142

Highest price paid per share (pence per share): 144

Volume weighted average price paid per share (pence per share): 143.1445

The total number of ordinary shares of the Company (including treasury shares) following the purchase is 174,492,894. The Company now holds 817,451 shares in treasury. The total voting rights of the Company following the purchase is 173,675,443.

The total voting rights figure (173,675,443) may be used by shareholders as the denominator for the calculations by which they will determine if they are required to notify their interest in, or a change to their interest in Griffin Mining Limited under the FCA’s Disclosure and Transparency Rules.

In accordance with Article 5(1)(b) of Regulation (EU) No 596/2014 (the Market Abuse Regulation), the schedules below contain a summary of and detailed information about the purchases made by the Company’s broker, Panmure Gordon (UK) Limited on behalf of the Company.

Further information

Griffin Mining Limited

Telephone: +44 (0)20 7629 7772

Mladen Ninkov – Chairman

Roger Goodwin – Finance Director

Panmure Gordon (UK) Limited

Telephone: +44 (0)20 7886 2500

John Prior

Joanna Langley

Berenberg

Telephone: +44 (0)20 3207 7800

Matthew Armitt

Jennifer Wyllie

Deltir Elezi

Blytheweigh

Telephone: +44(0)20 7138 3205

Tim Blythe

Swiss Resource Capital AG

info@resource-capital.ch

Jochen Staiger

Griffin Mining Limited’s shares are quoted on the Alternative Investment Market (AIM) of the London Stock Exchange (symbol GFM).

The Company’s news releases are available on the Company’s web site: www.griffinmining.com