Transaction in Own Shares

8th 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

20th November 2023

Griffin Mining Ltd ("the Company") announces that on 17th November 2023 it purchased 8,000 of the Company's own ordinary shares ("Ordinary Shares") at a price of 84.0p per Ordinary Share. The Ordinary Shares have been purchased to be held in treasury for the time being.

Following completion of the purchase of these Ordinary Shares there are 192,828,420 Ordinary Shares in issue, of which 1,216,124 Ordinary Shares will be held in treasury.

Consequently, shareholders should use 191,612,296 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, under the Disclosure Guidance and Transparency Rules of the Financial Conduct Authority.

Griffin Mining Limited

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

Roger Goodwin - Finance Director

Panmure Gordon (UK) Limited Telephone: +44 (0)20 7886 2500

John Prior

Dougie McLeod

Berenberg 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