Anteros Metals Provides Operational Update on Phase 1 Extension Drilling at the Seagull Critical Minerals Project, Ontario

Executive Summary

• Anteros Metals announced the upcoming mobilization and restart of the Phase 1 extension drilling program at the Seagull Critical Minerals Project, with crew arrival expected around February 23, 2026.
• The extension will target the previously intersected pressurized gas occurrence at ~877 m depth (hole RM26‑01) and evaluate associated sulphide mineralization, including a potential re‑entry of hole WM00‑05 for an additional ~115 m of drilling.
• Laboratory assay results from hole RM26‑01 are pending; the company will provide further updates as drilling resumes and data become available.

Key Details

• Program Operator: Rift Minerals Inc., under the option/JV agreement that could grant Anteros up to a 49% interest in the project.
• Mobilization Timeline: Drill on site; mobilization to next pad imminent; full crew expected on/around Feb 23, 2026; drilling to recommence shortly thereafter, subject to field conditions.
• Key Historical Intercept (RM26‑01): Pressurized gas occurrence at ~877 m depth within a narrow fault zone in Archean basement rocks of the Quetico Subprovince; casing sealed at surface for monitoring and potential gas sampling.
• Proximity to Prior Gas Encounter: RM26‑01’s gas zone is ~100 m from hole WM01‑08, which also reported pressurized gas in 2001.
• Sulphide Mineralization (RM26‑01): Discontinuous orthomagmatic sulphide mineralization intersected between ~589–608 m depth in the basal cumulate sequence of the Seagull Intrusion; assays pending.
• Geological Context: The Seagull Intrusion comprises thick mafic‑ultramafic sequences (lherzolite, pyroxenite) that can undergo serpentinization, potentially generating hydrogen.
• Planned Extension Work:
• Re‑entry candidate hole WM00‑05; may involve casing refurbishment and ~115 m of extension drilling to test the ~877 m elevation gas occurrence.
• Potential wedging to further assess basal sulphide mineralization depending on results and operational considerations.
• CEO Quote: “The proposed Phase 1 extension represents a logical next step… while minimizing additional expenditure.” – Trumbull Fisher, CEO.
• Assay Results: Pending laboratory analysis for RM26‑01; no independent verification of historic platinum‑palladium mineralization.

Notable Quotes

“The proposed Phase 1 extension represents a logical next step to build on observations from RM26-01 and advance our understanding of the Seagull critical minerals system,” said Trumbull Fisher, CEO of Anteros.

Materiality Assessment: Non‑Material – Positive (operational update with forward‑looking elements but no immediate financial impact).