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GREAT SOUTHERN COPPER PLC

Report Publication Announcement Nov 4, 2025

5091_rns_2025-11-04_4e64b66f-d6f8-42b5-823b-64f894827ea9.html

Report Publication Announcement

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National Storage Mechanism | Additional information

RNS Number : 0074G

Great Southern Copper PLC

04 November 2025

04 November 2025

Great Southern Copper plc

("GSC" or the "Company")

Greenwood Research Note

Great Southern Copper plc (LSE: GSCU), the company focused on copper-gold-silver exploration in Chile, is pleased to announce that Greenwood Capital Partners, has published a research note on the Company, commissioned by Great Southern Copper.

The research note, titled "Cretaceous Park: deposits roaming free", is available to view at the following link:

https://greenwoodcp.co.uk/portal/#/portal/greenwood-capital-partners/research/794bf9f5-5856-43ba-92dd-1729b111303d

Enquiries:

Great Southern Copper plc
Sam Garrett, Chief Executive Officer +44 (0)20 4582 3500
SI Capital Limited
Nick Emerson +44 (0)14 8341 3500
BlytheRay
Tim Blythe / Megan Ray +44 (0) 20 7138 3204

[email protected]

About Great Southern Copper

Great Southern Copper PLC is a UK-listed mineral exploration company focused on the discovery of copper-gold-silver deposits in Chile. The Company has the option to acquire mining rights to 100% of Especularita project in the under-explored coastal belt of Chile that is prospective for large scale copper-gold-silver deposits. Chile is a globally significant mining jurisdiction being the world's largest producer and exporter of copper.

The Especularita Project is located in the coastal metallogenic belt of Chile which hosts significant copper mines and deposits, including Teck's Carmen de Andacollo copper mine, and boasts excellent access to infrastructure such as roads, power and ports. Significant historical small-scale and artisanal workings for both copper and gold are readily evident in the exploration project area. The coastal belt offers deposit type optionality for copper including porphyry and IOCG style deposits as well as newly recognised intrusive-related copper and gold deposits.

Great Southern Copper is strategically positioned to support the global market for copper - a critical battery metal in the clean energy transition around the world. The Company is actively engaged in exploration and evaluation work programmes targeting both large tonnage, low to medium grade Cu-Au as well as high-grade Cu-Ag-Au deposits.

Further information on the Company is available on the Company's website: https://gscplc.com

This information is provided by Reach, the non-regulatory press release distribution service of RNS, part of the London Stock Exchange. Terms and conditions relating to the use and distribution of this information may apply. For further information, please contact [email protected] or visit www.rns.com.

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