Great Southern Copper plc (LON: GSCU) Notice of AGM & Approval of a Rule 9 Waiver

Notice of Annual General Meeting

Approval of a Rule 9 Waiver in connection with the exercise of Warrants granted to Foreign Dimensions Pty LTD

Great Southern Copper plc (LSE: GSCU), the Company focused on copper-gold-silver exploration in Chile, announces that its 2025 Annual General Meeting (“AGM”) is to be held at Gowlings LLP, 4 More London Riverside, London, SE1 2AU on Tuesday 30 September at 10:00 am.

One of the resolutions proposed at the AGM is for Independent Shareholders to vote in relation to the Company’s largest shareholder, Foreign Dimensions Pty LTD (“Foreign Dimensions”), being permitted to exercise all of the Warrants it holds in the Company without triggering an obligation to make a mandatory offer under Rule 9 of the City Code on Takeovers and Mergers. Foreign Dimensions, together with its concert parties, currently hold 46.72% of the current issued share capital of the Company.

Foreign Dimensions is a strong advocate of the Company and its management team, as evidenced by its financial support to date.  The Directors are keen to ensure that Foreign Dimensions can maintain its ability to exercise all of the Warrants it holds, which could provide an important source of funding as the Company looks to build on the exploration success it has enjoyed to date on its portfolio of projects in Chile.

In order to demonstrate its ongoing support, and notwithstanding the current share price, Foreign Dimensions has agreed to exercise 6,250,000 of the warrants it was issued in May 2023, exercisable at 2.4p per share. Foreign Dimensions retains a further 25,083,328 warrants, exercisable at 2.4p per share.

Application will be made to the London Stock Exchange for the 6,250,000 shares issued pursuant to the warrant exercise to be admitted to listing on Equity Shares (Transition) category of the Official List and to trading on the Main Market of the London Stock Exchange, and it is expected that Admission of these shares will become effective at 8.00 a.m. on 6 October 2025.

Charles Bond, Chairman of Great Southern Copper, said: “The continued support of long-term shareholder Foreign Dimensions, who remain willing to exercise warrants at 2.4p in the context of a lower share price, is greatly appreciated. The current and possible future warrant exercises (which will be enabled by the proposed shareholder approval) in combination with the draw down of the £522,000 convertible loan (which converts at premium to market), allow GSC to continue advancing its projects in Chile including Phase III drilling at Mostaza due to commence shortly.

 “Foreign Dimensions had wanted to exercise its Warrants earlier this year, but given its percentage holding had fallen below 50 per cent, principally as they had invested using a convertible loan to assist with the Company’s most recent fundraising, it was determined by the Panel that any further exercise of Warrants required a Rule 9 waiver, although the Warrants were granted at a time when no offer obligation under Rule 9 of the Takeover Code would have arisen on their exercise, as they held over 50 per cent of the Company’s voting rights at the time.

“We look forward to maintaining a strong ongoing relationship with Foreign Dimensions and all our shareholders as we work together to advance discoveries and development of our exciting assets in Chile.”

Sam Garrett, Chief Executive Officer of Great Southern Copper, said: “With Phase III drilling soon to commence on GSC’s high grade copper-silver prospect at Cerro Negro and the discovery of porphyry gold mineralisation at Viuda, GSC is at a very exciting position in the exploration cycle.

“The Company’s strategy of aggressive, yet efficient and focussed exploration targeting copper-gold-silver deposits in the coastal belt of Chile with access to excellent infrastructure has been highly successful and includes the discovery of two deposits at Especularita plus a pipe-line of untested, drill-ready prospects.

“The on-going support of our cornerstone investor with loan and warrant funding is a strong endorsement of our success and, significantly, allows us the opportunity to further extend our exploration plans.”

Further details of the Rule 9 Waiver are set out in the Appendix below.

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 2025 were posted to shareholders following the announcement made on 18 July 2025.

Shareholders should read the whole of the Notice of AGM and not only rely on the information set out in this announcement.

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