Temporary Reduction in Throughput

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: [email protected]

18^th September 2025

Temporary Reduction in Throughput for the four months to the 31^st December 2025

Griffin Mining Limited ("Griffin" or the "Company") announces today that the Company has been requested by the relevant County, City and Provincial Bureaus, in line with such requests to the majority of mining operations in China, to reduce operational throughput in support of a safety initiative that will run until the end of 2025. The current projection is a reduction in throughput of approximately only 110,000 tonnes over the four months from September to December 2025. Cooperation in this initiative is essential to obtaining the relevant permitting and commissioning of Zone II and continuing production from Zone III. 

With the recent rises in gold and zinc prices, notwithstanding the reduction in throughput, the Company expects that its financial results for the full year to be in line with management expectations.

Chairman's Statement

Chairman Mladen Ninkov commented, "This temporary reduction in throughput is not expected to materially affect full year financial results, particularly if the current strength in commodity prices persists, but creates the necessary environment with the Chinese regulatory authorities to engender the appropriate respect as good operators in China to obtain the necessary approvals to take the Caijiaying Mine to the next level."

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

              Zak Wadud

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