Date of purchase: 16 April 2021

Aggregate number of ordinary shares purchased: 32,000

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

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

Volume weighted average price paid per share (pence per share): 142

The total number of ordinary shares of the Company (including treasury shares) following the purchase is 174,492,894. The Company now holds 782,500 shares in treasury. The total voting rights of the Company following the purchase is 173,710,394.

The total voting rights figure (173,710,394) 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.

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