Quarterly Activities Report for the Period Ended 30 September 2026

Horizon Gold Limited (ASX : HRN) (‘Horizon’ or ‘Company’) is focussed on progressing its exploration and development activities at the 100%-owned Gum Creek Gold Project (‘Gum Creek’ or the ‘Project’) located in the Mid-West Region of Western Australia (Figure 1). Gum Creek has historically produced more than 1 million ounces of gold and currently hosts a gold resource of 37.97Mt @ 1.89g/t Au for 2.30 million ounces 1 . The Project currently covers 644km2 of granted tenure over the highly prospective and underexplored Gum Creek greenstone belt, which contains 37 open pit and three underground gold mines.

HIGHLIGHTS

• RC drilling at Snook returned spectacular intercepts from the deepest drilling at theprospect to date including:
  • 44m @ 5.08g/t Au from 145m including 11m @ 16.30g/t Au from 174m
  • 14m @ 5.18g/t Au from 88m including 8m @ 8.81g/t Au from 90m
  • 12m @ 5.72g/t Au from 135m including 5m @ 10.93g/t Au from 139m
  • 14m @ 4.12g/t Au from 204m including 3m @ 15.33g/t Au from 205m
  • 15m @ 3.35g/t Au from 158m including 3m @ 13.89g/t Au from 167m
• Infill and extension RC drilling at Kingfisher returned high-grade intercepts including:
  • 23m @ 5.26g/t Au from 188m including 15m @ 7.65g/t Au from 192m
  • 45m @ 1.24g/t Au from 114m including 3m @ 6.79g/t Au from 114m
  • 12m @ 2.81g/t Au from 74m including 6m @ 5.26g/t Au from 79m
  • 21m @ 1.36g/t Au from 130m including 4m @ 3.17g/t Au from 131m
  • 6m @ 3.94g/t Au from 67m including 2m @ 9.14g/t Au from 67m
• RC drilling at Howards confirmed an 800-metre southern extension to known goldmineralisation returning high grade intercepts including:
  • 6m @ 5.57g/t Au from 70m including 3m @ 9.91g/t Au from 71m
  • 9m @ 2.27g/t Au from 41m including 5m @ 3.54g/t Au from 41m
  • 4m @ 4.65g/t Au from 70m including 1m @ 17.30g/t Au from 70m
  • 5m @ 3.41g/t Au from 29m including 3m @ 5.41g/t Au from 30m
• Infill and extension RC drilling at Heron South returned solid intercepts including:
  • 6m @ 12.67g/t Au from 114m including 1m @ 58.70g/t Au from 114m
  • 25m @ 1.79g/t Au from 84m including 4m @ 7.87g/t Au from 93m
  • 12m @ 2.35g/t Au from 180m including 7m @ 3.50g/t Au from 180m
• Shallow infill and extensional RC drilling at Melbourne Bitter highlighted the potentialfor significant resource expansion to the south, returning intercepts including:
  • 21m @ 2.14g/t Au from 24m including 8m @ 3.64g/t Au from 31m
  • 11m @ 1.78g/t Au from 35m including 4m @ 3.91g/t Au from 36m
  • 12m @ 1.59g/t Au from 68m including 4m @ 3.87g/t Au from 75m
  • 11m @ 1.40g/t Au from 27m including 2m @ 3.30g/t Au from 34m
• Shallow infill and extensional RC drilling at Cobia, Alma May, Hawk and Swan returnedthe following best intercepts:
  • 21m @ 2.08g/t Au from 76m including 15m @ 2.68g/t Au from 79m (Cobia)
  • 10m @ 1.65g/t Au from 47m including 4m @ 3.40g/t Au from 53m (Cobia)
  • 3m @ 5.16g/t Au from 43m (Cobia)
  • 5m @ 2.79g/t Au from 26m including 1m @ 12.50g/t Au from 26m (Alma May)
  • 5m @ 2.62g/t Au from 21m including 2m @ 5.22g/t Au from 22m (Alma May)
  • 11m @ 1.07g/t Au from 68m including 4m @ 2.10g/t Au from 71m (Alma May)
  • 6m @ 1.39g/t Au from 12m and 2m @ 4.07g/t Au from 8m (Alma May)
  • 12m @ 2.30g/t Au from 140m including 6m @ 4.26g/t Au from 140m (Hawk)
  • 5m @ 3.46g/t Au from 159m (Hawk)
  • 16m @ 1.84g/t Au from 45m including 7m @ 3.03g/t Au from 46m (Swan)
  • 6m @ 1.23g/t Au from 28m (Swan)
• Follow up RC and diamond drilling is being planned at all 9 prospects.
• Diamond drilling is continuing at the Kingfisher prospect, and RC drilling is continuingat Howards prior to moving to the Wyooda resource area (Kingston Town, Manikato,Think Big).

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