8^th Floor, 54 Jermyn Street, London, SW1Y 6LX. United Kingdom

Telephone: + 44 (0)20 7629 7772  Facsimile:  + 44 (0)20 7629 7773

E mail: griffin@griffinmining.com

Transaction in own shares

Cancellation of share buyback programme

6^th August 2024

Griffin Mining Ltd ("the Company") announces that on 5^th August 2024 Panmure Liberum Limited ("Panmure Liberum") purchased on behalf of the Company 26,728 of the Company's own ordinary shares ("Ordinary Shares") at a price of 130 pence per Ordinary Share. The Ordinary Shares have been purchased to be held in treasury for the time being.

The Ordinary Shares have been purchased under an irrevocable commitment with the Company's corporate broker, Panmure Liberum, to manage the Share Buyback Programme, announced on 26^th February 2024, on the Company's behalf. The Company announces that is has now terminated the Share Buyback Programme, effective today (6^th August 2024). The Board intends to continue to purchase its own Ordinary Shares on an ad-hoc basis in accordance with the Company's general authority to repurchase its Ordinary Shares. A further announcement in relation to the commencement of such buyback and its terms will be made in due course.

Following completion of the purchase of these Ordinary Shares and the Share Buyback Programme there are 184,530,477 Ordinary Shares in issue, of which 1,216,996 Ordinary Shares will be held in treasury.

Consequently, shareholders should use 183,313,481 Ordinary Shares 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 the Company.

Further information

Griffin Mining Limited

Mladen Ninkov - Chairman                                                                             Telephone: +44(0)20 7629 7772

Roger Goodwin - Finance Director

Panmure Liberum Limited - Nominated Adviser & Joint Broker                               Telephone: +44 (0)20 7886 2500

             James Sinclair-Ford

             Kieron Hodgson

             Dougie McLeod

Berenberg - Joint Broker                                                                                                                          Telephone: +44(0)20 3207 7800

                Matthew Armitt

Jennifer Lee

This announcement contains inside information for the purposes of Article 7 of the Market Abuse Regulation (EU) No. 596/2014

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