UPDATE TO SHARE BUY-BACK PROGRAMME

Griffin Mining Limited

22 September 2023

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

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

UPDATE TO SHARE BUY-BACK PROGRAMME

22^nd September 2023

On 25^th February 2021, Griffin Mining Limited ("Griffin", or the "Company") announced a share buy-back programme to return excess monies not required to meet financial and working capital requirements to shareholders. On 12^th September 2023, the Company announced that it was renewing efforts to successfully effect the previously announced share buy-back programme.

Under the terms of the buy-back programme as originally announced, the Company will not purchase more than 25% of the average daily volume of its shares, being based on the average daily volume traded in the 20 trading days preceding the date of purchase. In order to proceed with the share buy-back programme in a more effective manner, the Company has agreed that the share buy-back may on any given trading day exceed 25 percent but remain below 50 percent of the average daily volume traded in the 20 trading days preceding the date of purchase. Should this occur, the Company may not benefit from the exemption contained in Article 5(1) in MAR.

Further information

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 Wyllie

This announcement contains inside information for the purposes of Article 7 of the Market Abuse Regulation (EU) No. 596/2014 as it forms part of UK domestic law by virtue of the European Union (Withdrawal) Act 2018

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

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