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14 August 2024

Great Southern Copper plc

("GSC" or the "Company")

Notice of Annual General Meeting

Great Southern Copper plc (LSE: GSCU), the company focused on copper-gold exploration in Chile announces that its 2024 Annual General Meeting ("AGM") is to be held at Gowlings LLP, 4 More London Riverside, London, SE1 2AU on Monday 9 September at 10:00am.

The Notice of AGM and form of proxy will be posted to shareholders today. The documents will also be uploaded to the Company's website at www.gscplc.com in due course. The Annual Report and Accounts for the financial year ended 31 March 2024 were posted to shareholders following the announcement made on 26 July 2024.

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About Great Southern Copper

Great Southern Copper PLC is a UK-listed mineral exploration company focused on the discovery of copper-gold and lithium deposits in Chile. The Company has the option to acquire rights to 100% of two projects in the under-explored coastal belt of Chile that are prospective for large scale copper-gold deposits. In addition, the Company has the option to acquire rights to 100% of a lithium project located in the Salar de Atacama district of Chile. Chile is a globally significant mining jurisdiction being the world's largest copper producer and the second-largest producer of lithium.

The two, early-stage Cu-Au projects comprise the Especularita and San Lorenzo Projects, both 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 both exploration project areas. The Company's Monti Lithium project is strategically located in the pre-Andean region of Salar de Atacama which is Chile's premier lithium-producing region with well-established lithium mining operations and infrastructure.

Great Southern Copper is strategically positioned to support the global market for copper and lithium - both critical battery metals 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 and Li deposits as well as high-grade Cu-Au deposits.

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