Summary
• Drilling has commenced to test the seven highest-ranked shallow “pipe-like”geophysical features analogous to North Parkes and Cadia Cu-Au porphyry deposits
• The Byrock Project is an untested company interpreted north-west segment of the Macquarie Arc, which is host to profitable Cu-Au porphyry mines to the south
• Drill targets are under a shallow cover of ~80m
• The 1,500m Aircore/RC drill program will take two (2) weeks to complete
• The company intends to announce assay results upon receip
These shallow drill targets are a low-cost, high-impact opportunity for Altitude, where the potential exists to define “pencil” Cu-Au porphyry deposits, which exhibit a pipe-like geometry, within a previously unrecognised and untested segment of the Macquarie Arc.
If this proof-of-concept drill program is successful, it has the potential to become a flagship project for the Company. Altitude also holds a significant 100% ground position adjacent to the Byrock Project with a similar geological setting and prospectivity.
This will be the 2nd drilling program in three months and is in line with Altitude’s pipeline strategy of unlocking shareholder value through testing for high-quality discoveriesManaging Director Duncan Chessell
MORE INVESTOR UPDATES

Geophysical Surveys Completed at the Byrock Project, Macquarie Arc, NSW
75 infill gravity stations and 92-line km of passive seismic have been acquired in total over the Pipes Targets and T55 Target in the last month as a validation step
Investor Presentation: RIU Explorers Conference (February 2026)
Altitude Minerals – Investor Presentation

Drilling Supports Interpreted NW Extension of the Macquarie Arc, Byrock Project, NSW
This first-ever drillhole at Target T55 (EL9746), Byrock Project, achieved a key objective — confirming the presence of a porphyry intrusive system beneath cover in a Company interpreted NW extension of the Macquarie Arc, NSW

Altitude Advances Earn-in on Positive Air-Core Results
Positive Proof-of-Concept Drill Results have validated the geological model and
confirmed the prospectivity of the target area to host Cu-Au porphyry style deposits

Altitude Appoints Principal Geologist USA
Altitude Minerals Ltd is pleased to announce the appointment of Mr Gabe Graf as Principal Geologist – USA, effective immediately.
Quarterly Activities Report: December 2025
Catch up on all the latest Activities with this Quarterly Report