Sendero prepares for phase 2 exploration at Penas

Executive Summary

• Sendero Resources announced a strategic update for its Penas Negras project, highlighting the completion of Phase 1 (3,126 m core drilling) and outlining an upcoming 3,600‑m Phase 2 drill program targeting a porphyry‑type undrilled target.
• Phase 1 delivered multiple notable intercepts, including up to 364.2 m grading 0.51 g/t AuEq, demonstrating the presence of both porphyry and epithermal mineralization.
• The company has integrated extensive geophysical, geochemical, and structural data into a predictive‑discovery model, establishing a pipeline of targets across its 211 km² land position in the prolific Vicuna belt.

Key Details

• Phase 2 Drill Program: Planned for Q1 2026; ~3,600 m targeting a structurally defined 3.0 × 2.0 km tract with favorable structural, geochemical and geophysical signatures.
• Phase 1 Execution (2024‑2025):
• 3,126 m core drilling in eight holes.
• 715 km airborne magnetics & radiometrics; 10 km IP lines; 211 km ground magnetics surveys.
• Key Intercepts – Phase 1:
• Hole PNDH‑001 (La Peña): 226 m @ 0.22 g/t AuEq from surface*.
• Hole PNDH‑002 (Tamberías): 168 m @ 0.22 g/t AuEq from surface*.
• Hole PNDH‑003 (La Ollita): 256 m @ 0.53 g/t AuEq from 84 m*.
• Hole PNDH‑004 (La Ollita): 266 m @ 0.52 g/t AuEq from 96 m**.
• Hole PNDH‑05 (La Ollita): 300 m @ 0.36 g/t AuEq from 122 m**.
• Hole PNDH‑06 (La Ollita): 364.2 m @ 0.51 g/t AuEq from 33.8 m**.
• * Press release 3 Apr 2024; ** Press release 1 May 2024.
• Integrated Exploration Model: Combines district‑wide data (geophysical, geochemical, spectral, drilling, trenching, structural) into a mineral‑systems approach, identifying a gold‑copper porphyry system with high‑sulfidation epithermal affinities within the Mogotes structural corridor.
• Project Footprint: 211 km² of highly prospective ground in central Vicuna, adjacent to major discoveries (Filo del Sol, José María, Lunahuasi).
• Strategic Positioning: Proximity to generational copper‑gold‑silver deposits; shares geological setting and structural controls with neighboring projects.
• Management Quote: “2025 has been a transformative year… Our focus now shifts to drilling – the stage where true value is created.” – Alex Gostevskikh, CEO.

Notable Quotes

“Our focus now shifts to drilling — the stage where true value is created. We believe Penas Negras gives our shareholders rare exposure to the next discovery potential in the Vicuna belt.” – Alex Gostevskikh, Chief Executive Officer.