Greatland Gold plc provided an updated Mineral Resource Estimate for Havieron, its gold-copper project located in the Paterson Province of Western Australia. Estimated Mineral Resources (including Ore Reserves) increased to 8.4Moz AuEq1 (7.0Moz Au plus 275kt Cu), an increase of 1.9M oz AuEq1 from Greatland's 2022 Mineral Resource Estimate: 29% increase in total gold equivalent content to 8.4M oz AuEq1. 28% increase in total gold content to 7.0M oz Au.

Continuous mineralisation confirmed between the Eastern Breccia and main Havieron Breccia domains with the definition of a new high grade "Link Zone". Drilling since Greatland's previous Mineral Resource Estimate (MRE) update in March 2022 targeted the lower portion of the mineral system and has increased the ounce per vertical metre (OPVM) profile of these lower levels in line with the upper levels of the deposit. The updated MRE now averages 7,900 OPVM (gold equivalent) over the top 1,000 metres vertically.

The MRE update includes a 32% increase in contained gold equivalent metal in the higher confidence Indicated MRE category, which can now be considered in the updated Ore Reserve Estimate that will be part of the Feasibility Study. The updated MRE incorporates approximately 93,000 metres additional drilling completed since the December 2021 drilling cut-off for Greatland's March 2022 MRE. Mineral Resource estimates are expressions of judgement based on knowledge, experience and industry practice.

They are also based on a number of material assumptions (such as future commodity prices and foreign exchange, cut off grades) which may prove to be incorrect. Estimates which were valid when originally made may alter significantly when new information or techniques becomes available. In addition, by their very nature, Mineral Resource estimates are imprecise and depend to some extent on interpretations, which may prove to be inaccurate.

Unless and until actually mined and processed, no assurance can be given that any estimated tonnage, grades and recovery levels will be realized. This announcement and the updated Mineral Resource Estimate for the Havieron Projectcontainedin ithave been prepared solely by Greatland based on relevant available information and have not been reviewed or approved by Greatland's Havieron joint venture partner, Newmont Corporation (Newmont). Newcrest Operations Limited,a subsidiary of Newmont, is the manager of the Havieron Joint Venture and holds the majority 70% joint venture interest.

Whilst the information in this announcement pertaining to the estimation and reporting of the Mineral Resources has been reviewed and approved by a Competent Person3 and the updated Mineral Resource estimate has been independently reviewed by SRK Consulting (Australasia) Pty Ltd4, the Company considers that it is possible that, in preparing any future Mineral Resource estimate or Ore Reserve estimate for the Havieron project, Newmont may adopt different interpretations, assumptions, parameters or plans, or make different judgements, to those used or made by Greatland in the updated Mineral Resource Estimate contained in this announcement.