• Inferred Mineral Resource Estimate of 88,600t of contained copper metal
• Significant expansion potential with numerous untested breccia pipes identified
• Commencing on-ground review and planning future exploration and resource definition activities

Golden Horse Minerals Limited (Golden Horse) has completed the acquisition of the Sorrel Copper Project, which includes a JORC 2012 Inferred Mineral Resource Estimate (MRE) of 8.4Mt at 1.1% Cu for 88,600t of contained copper metal. The acquisition was completed through the purchase of 100% of the shares in NTM's wholly-owned subsidiaries, Redbank Operations Pty Ltd and Mangrove Resources Pty Ltd, which hold the Sorrel Copper Project assets. Golden Horse believes the project has scope for significant expansion, with numerous untested breccia pipes identified across the project area. The company plans to undertake a comprehensive review of the geology and past exploration, complete an economic evaluation study, secure heritage approvals, and commence a maiden drill program (expected mid-2026) to test the numerous interpreted breccia pipes and expand the existing MRE. The Sorrel Copper Project is located in the east McArthur Basin in the Northern Territory, approximately 30km west of the Northern Territory/Queensland border, and is surrounded by a number of Tier-1 base metal deposits including the McArthur Mine.

Golden Horse plans to undertake the following activities at the Sorrel Copper Project: - Undertake a comprehensive review of geology and past exploration to delineate high-impact drill targets - Complete an economic evaluation study to assess the overall potential and guide future exploration and resource definition - Secure heritage approvals (expected April 2026) - Commence a maiden drill program to test the numerous interpreted breccia pipes (expected mid-2026)