Replacement – Director/PDMR Shareholdings

Great Southern Copper PLC

11 August 2026

 

THIS ANNOUNCEMENT CONTAINS INSIDE INFORMATION AS STIPULATED UNDER THE UK VERSION OF THE MARKET ABUSE REGULATION NO 596/2014 WHICH IS PART OF ENGLISH LAW BY VIRTUE OF THE EUROPEAN (WITHDRAWAL) ACT 2018, AS AMENDED.  ON PUBLICATION OF THIS ANNOUNCEMENT VIA A REGULATORY INFORMATION SERVICE, THIS INFORMATION IS CONSIDERED TO BE IN THE PUBLIC DOMAIN.

The following amendments have been made to the 'Director/PDMR Shareholdings' announcement released on 11 August 2026 at 13:03 under RNS No. 2341Q.

The prices listed in section 4C have been changed from pounds to pence.

All other details remain unchanged.

The full amended text is shown below.

11 August 2026

Great Southern Copper plc

("GSC" or the "Company")

Replacement - Director/PDMR Shareholdings

Great Southern Copper plc (LSE: GSCU), the company focused on copper-gold-silver exploration in Chile, is pleased to announce that Sam Garrett, Chief Executive Officer, has purchased 475,000 Ordinary Shares in the Company. The transaction is summarised below:

Director	Shares acquired	Total holding following notification	% of issued Ordinary share capital
Sam Garrett (CEO)	475,000	16,305,501	2.11%

Enquiries:

Great Southern Copper plc	https://gscplc.com/link/e9BBzr
Sam Garrett, Chief Executive Officer	[phone]
SI Capital Limited
Nick Emerson	[phone]
BlytheRay
Megan Ray / James Mulligan	[phone] [e-mail]

Subscribe to our news alert service: https://gscplc.com/auth/signup

Notification and public disclosure of transactions by persons discharging managerial responsibilities/ person closely associated with them.

1	Details of the person discharging managerial responsibilities/person closely associated
a)	Name	Sam Garrett
2	Reason for the notification
a)	Position/status	Chief Executive Officer
b)	Initial notification/ Amendment	Initial Notification
3	Details of the issuer, emission allowance market participant, auction platform, auctioneer or auction monitor
a)	Name	Great Southern Copper plc
b)	LEI	213800RF6N9WA8PZH313
4	Details of the transaction(s): section to be repeated for (i) each type of instrument; (ii) each type of transaction; (iii) each date; and (iv) each place where transactions have been conducted
a)	Description of the financial instrument, type of instrument Identification code	Ordinary shares of 1 pence each GB00BLB5BF24
b)	Nature of the transaction	Purchase of ordinary shares
c)	Price(s) and volume(s)	Price(s) p Volume(s) 212 209.78 175,000 300,000
e)	Date of the transaction	11 August 2026
f)	Place of the transaction	London Stock Exchange

Notes for Editors:

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

 

END