TURNSTONE RESOURCES LTD

ASX: TSR

ASX Announcement

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20 March 2026

Turnstone Resources: New Name, New Identity – Copper-Gold Explorer Targets Sweden’s Prospective Värmland Belt

Highlights

South Harz Potash Ltd has changed its name to Turnstone Resources Ltd , reflecting the Company’s transition to a multi-asset critical minerals company
Turnstone has expanded into Sweden through an Option Agreement to acquire the Glava 100 Cu-AuAg Project in Värmland Province and the granting of six exploration licences in the same region
The Company’s name change has taken effect on the ASX today, with the ticker code changing from SHP to TSR
Recent A$1.25 million placement completed at A$0.03 per share, attracting new investors to the Turnstone story
Funding to advance exploration at Glava-Klinten and Torsby West projects comprising approximately 10,600ha landholding, with a maiden drilling programme targeted for mid-2026

Executive Chair Len Jubber commented: “ With the demand and search for copper remaining strong Turnstone Resources is excited by the upside potential associated with our prospective copper-gold landholding in Sweden, one of the world’s most attractive mining jurisdictions.

The exciting name change to Turnstone Resources represents an important milestone in the execution of our diversification strategy and transition to a multi-asset critical minerals explorer. This transition began with the acquisition of the Glava project, subject to execution of the option agreement announced in late 2025 and the subsequent granting of six exploration licences across our Swedish projects. We are focussed on accelerating our copper-gold exploration activities at Glava-Klinten and Torsby West following the strong interest from new and existing investors in the recent capital raising. We are advancing towards a maiden drilling programme in mid-2026.

The aligning of the Board composition with our strategy ensures that we are well positioned to continue executing our critical minerals growth plans as Turnstone Resources .”

Turnstone Resources Ltd ( ASX: TSR ) ( Turnstone or the Company ) is pleased to advise that, following shareholder approval received at the General Meeting held on 16 March 2026, the Company has changed its name from South Harz Potash Ltd to Turnstone Resources Ltd.

The name change has been processed by the Australian Securities and Investments Commission (ASIC) and took effect on the Australian Securities Exchange (ASX) from the commencement of trading on 20 March 2026. The Company’s ASX ticker code has also changed from SHP to TSR.

The name change reflects the substantial progress made with regards to diversification of the Company’s portfolio following commitment to a critical minerals growth strategy in mid-2025.

Turnstone Resources Ltd | ASX:TSR | ACN: 153 414 852 U15, 6-10 Douro Place, West Perth WA 6005 P: +61 (0) 408 447 493 E: [email protected] W: turnstoneresources.com

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Name Change

With the expansion and diversification of the Company’s focus in Europe, the Board determined that a change of name was needed to reflect and ensure recognition of the evolution of the Company strategy. The Company is now Turnstone Resources Ltd, trading under the ASX ticker code TSR.

In the past six months, the Company has broadened its portfolio significantly, initially through the Option Agreement announced in November 2025 to acquire the Glava 100 Cu-Au-Ag Project in Sweden. The Company has also recently been granted six exploration licences applied for at the Glava-Klinten and Torsby West copper-gold projects in Sweden. The licences are held by McKnight Resources AB ( McKnight ) on trust for the Company.

Turnstone has aligned its board capability with the critical minerals growth strategy, and expansion into Sweden, including the recent appointment of experienced critical minerals executive Christian Barbier as Non-Executive Director.

In Germany, Turnstone continues to recognise the long-term value of the Ohmgebirge Potash Project and will advance it when market conditions support, while directing near-term capital towards higher velocity critical minerals opportunities in Sweden.

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1. Glava 100 licence held by McKnights Resources AB – will be transferred to Turnstone subject to exercise of its option to acquire this licence

2. All other Swedish licences held by McKnight Resources AB on trust for Turnstone. Legal ownership to be transferred to Turnstone in due course

Figure 1. Turnstone Resources’ Corporate Structure

Next Steps

Turnstone Resources is targeting a maiden drill programme at the Glava-Klinten and Torsby West projects in Sweden in mid-2026. Earlier this month, the Company announced that it had received firm commitments to raise A$1.25 million by way of a placement to sophisticated and professional investors, with proceeds to be used to advance exploration activity in Sweden.

Ahead of the maiden drilling programme, the Company will progress geological mapping and geophysics surveys at the Glava-Klinten and Torsby West projects, which offer immediate discovery potential hosting outcropping copper – gold mineralisation.

ASX:TSR | E: [email protected] W: turnstoneresources.com

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At Torsby West, historical core has been inspected, relogged and re-sampled by McKnight, with assay results expected in March 2026. The Company, via McKnight, previously located the drill cores of 14 out of the 19 historic Boliden drill holes at the SGU Archive in Malå, North Sweden. The assay results will further inform Turnstone’s ongoing review and definition of exploration programmes at Torsby West.

Turnstone will also continue to assess additional portfolio opportunities to strengthen the Company’s critical mineral footprint.

Authorised for release by the board of Turnstone Resources Ltd.

– ENDS –

For more information please contact:

Len Jubber

Executive Chairman

E: [email protected]

Andrew Willis

Investor and Media Relations

NWR Communications

E: [email protected]

ASX:TSR | E: [email protected] W: turnstoneresources.com

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TURNSTONE RESOURCES LTD Capital/Financing Update 2026