GREAT SOUTHERN MINING LIMITED — Major Shareholding Notification 2025

Oct 30, 2025

Form 605 Corporations Act 2001 Section 671B

Notice of ceasing to be a substantial holder

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----- Start of picture text ----- To: Great Southern Mining LimitedABN/CAN 148 168 825 Source: Australian Business Register1. Details of substantial holder:Name: Perennial Value Management Limited (PVM)ACN: 22 090 879 904The holder ceased to be a substantial holder on 29 October 2025The previous notice was given to the company on 7 August 2025The previous notice was dated 7 August 2025----- End of picture text -----

2. Changes in relevant interests

Particulars of each change in, or change in the nature of, a relevant interest of the substantial holder or an associate in voting securities of the company or scheme since the substantial holder was last required to give a substantial holding notice to the company or scheme as follows:

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----- Start of picture text ----- Date of change Person whose relevant interest Nature of change Consideration given in Class & number of Person's voteschanged relation to change securities affected (ORD) affected7/08/2025 [HSBC] Sell on the Market $ 1,864.56 74,747 74,7478/08/2025 [HSBC] Sell on the Market $ 22,107.76 886,260 886,26019/08/2025 [HSBC] Sell on the Market $ 9,326.36 373,877 373,87720/08/2025 [HSBC] Sell on the Market $ 8,088.84 324,267 324,26726/08/2025 [HSBC] Sell on the Market $ 23,730.40 951,309 951,30927/08/2025 [HSBC] Sell on the Market $ 39,056.21 1,565,693 1,565,69328/08/2025 [HSBC] Sell on the Market $ 997.80 40,000 40,0001/09/2025 [HSBC] Sell on the Market $ 23,523.09 942,998 942,99826/09/2025 [HSBC] Sell on the Market $ 3,858.01 128,884 128,8847/10/2025 [HSBC] Sell on the Market $ 956.72 31,961 31,9619/10/2025 [HSBC] Sell on the Market $ 3,647.61 121,855 121,85514/10/2025 [HSBC] Sell on the Market $ 43,493.02 1,452,964 1,452,96415/10/2025 [HSBC] Sell on the Market $ 6,006.76 200,000 200,00016/10/2025 [HSBC] Sell on the Market $ 11,778.07 393,468 393,46820/10/2025 [HSBC] Sell on the Market $ 1,741.23 57,593 57,59329/10/2025 [HSBC] Sell on the Market $ 74,573.68 2,491,270 2,491,270----- End of picture text -----

3. Changes in Association

The persons who have become associates of, ceased to be associates of, or have changed the nature of their association with, the substantial holder in relation to voting interests in the company or scheme are as follows:

Name & ACN	Nature of association
Not applicable

4. Addresses

The addresses of persons named in this form are as follows:

Name	Address
Perennial Value	Level 27, 88 Phillip St
Management Limited	Sydney NSW 2000
Great Southern Mining	Suite 4, 213 Balcatta Road
Limited	Balcatta WA 6021

Signature

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----- Start of picture text ----- Print Name Bill Anastasopoulos Capacity Company SecretarySign Here Date 31/10/2025----- End of picture text -----