Sendero Resources Compelling Copper and Gold Drill targets on Trend with Filo Del Sol & Josemaria in the heart of the Vicuna Belt

About this update from Sendero Resources Corp.

Sendero Resources Compelling Copper and Gold Drill targets on Trend with Filo Del Sol & Josemaria in the heart of the Vicuna Belt (TheNewswire) Vancouver, British Columbia – (February 17, 2026) – TheNewswire - Sendero Resources Corp. (TSXV: SEND) (the “Company” or “Sendero”) is pleased to outline key geological characteristics at its Peñas Negras Project in La Rioja Province, Argentina, that are consistent with the large-scale magmatic-hydrothermal systems recognized elsewhere in the prolific Vicuña Copper-Gold Belt. The technical integration of geological, geophysics, alteration, geochemical, and structural datasets continues to support the interpretation that Peñas Negras represents part of a district-scale mineral system comparable in setting and architecture to other major deposits within the belt. The Company has adopted a district-thinking approach to improve target definition, reduce geological risk and enable more rapid and effective drilling to test whether the system is typical of Vicuña giants. Fig. 1.  Sendero land position and Vicuña Belt Deposits.                 Peñas Negras is situated within the Miocene Andean magmatic arc, the same metallogenic event responsible for the formation of multiple large copper-gold systems along the Vicuña belt. This arc is characterized by long-lived, metal-fertile intrusive activity and large hydrothermal footprints typical of world-class geological environments. Key observations include : Historic drill results demonstrate significant copper and gold mineralization extending to depth which mineralization begins near to surface and with wide sections of high grade mineralization at depth  Widespread hydrothermal alteration across a broad area  Multiple intrusive phases interpreted to be part of a fertile magmatic suite  Structural corridors and intersections that likely acted as fluid pathways  Telescoped alteration assemblages consistent with high-level to deeper porphyry environments  These features collectively point toward a large-scale mineralizing system rather than an isolated prospect. System Comparison- Geological DNA   Filo del Sol Josemaría Peñas Negras Magmatic Pulse Miocene Miocene Miocene Arc Setting Andean magmatic arc Andean magmatic...

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