VANCOUVER, BC — February 17, 2026 — Leads & Copy — Luca Mining Corp. (TSX-V: LUCA; OTCQX: LUCMF; Frankfurt: Z68) has announced new underground drill results from its exploration program at the Campo Morado polymetallic VMS mine in Guerrero State, Mexico.
The company reported ongoing success in defining high-grade, gold and silver-rich VMS mineralization near active underground workings at Campo Morado.
Underground drillhole CMUG-25-36 intersected 135.7 meters of 1.58 g/t Au, 77.10 g/t Ag, 0.88% Cu, 0.40% Pb and 1.61% Zn from 87.7m, defining new mineralization at an unmined zone and extending mineralization approximately 20m from the previously defined extents of the Largo Norte Zone. Underground drillhole CMUG-25-33 intersected 14.3m of 1.50 g/t Au, 75.81 g/t Ag, 1.01% Cu, 0.46% Pb and 2.81% Zn from 167.6m, defining new mineralization within the Fish Zone.
Follow-up drilling of the Largo Norte Zone has commenced, based on the results of CMUG-25-36, with a focus on defining additional mineral resources. Drilling is ongoing at Campo Morado with two surface drill rigs and one underground drill rig.
Paul D. Gray, Luca’s VP of Exploration, stated that the Largo Norte Zone remains largely unmined. He added that CMUG-25-36 targeted an area just west of the existing bounds of the mineralized body and was designed to expand mineralization in an under-drilled area of the Campo Morado Mine. The drillhole intersected a long, consistent interval of massive sulphide mineralization beyond known mineralization extents.
Gray said the Largo Norte Zone represents a large, consistent mineralized VMS body that dips shallowly to the south and ranges from 20 to 60 meters in thickness. Follow-up drilling has been initiated to further expand mineralization to the west.
Drillhole CMUG-25-36 intersected mineralization from unmined areas, including 135.7m of 1.58 g/t Au, 77.10 g/t Ag, 0.88% Cu, 0.40% Pb and 1.61% Zn from 87.7m Including 101.5m of 1.92 g/t Au, 98.59 g/t Ag, 0.88% Cu, 0.52% Pb and 2.14% Zn from 121.9m with a high grade section of 16.0m of 3.20 g/t Au, 191.84 g/t Ag, 0.99% Cu, 1.29% Pb and 5.03% Zn from 207.4m.
Underground drillholes CMUG-25-27 and CMUG-25-28 targeted extensions of the C-227 mineralized zone, both currently under mine development, and intersected mineralization from unmined areas, including 6.6m of 0.54 g/t Au, 67.62 g/t Ag, 1.05% Cu, 0.65% Pb and 3.26% Zn, from 261.7m in a zone located within approximately 40m of existing underground workings.
Underground drillholes CMUG-25-29 and CMUG-25-30 targeted extensions of the A8 mineralized zone, and intersected mineralization from unmined areas, including 1.5m of 0.46 g/t Au, 36.00 g/t Ag, 1.55% Cu, 0.33% Pb and 2.57% Zn from 151.9m.
Underground drillhole CMUG-25-33 targeted extensions of the Fish mineralized zone, and intersected mineralization from unmined areas, including 14.3m of 1.50 g/t Au, 75.81 g/t Ag, 1.01% Cu, 0.46% Pb and 2.81% Zn from 167.6m.
These recent intersections underscore the multiple opportunities to add mineable resources proximal to current development headings and existing infrastructure, and expand previously defined mineral resources.
Drilling continues at Reforma and El Rey, in conjunction with underground drilling planned to target the Largo, Largo Norte, Naranjo and Fish deposits, which all contribute to the 2026–2028 mine plans.
The current Campo Morado drill campaign represents the first meaningful exploration program conducted on the property since 2014 and is designed to support the addition of mineral resources to the near- and medium-term mine plan.
To date, 38 underground diamond drillholes totaling 9,043m have been completed at the Campo Morado mine. In addition, 8,682m have been drilled from 29 surface drillholes at the Reforma, El Rey, Reforma Deeps and Zapata targets.
Previous exploration at Campo Morado has generated an extensive geological database, including more than 600,000m of underground and surface drilling, property-wide geological and structural mapping, approximately 30,000 geochemical soil samples, and a range of geophysical surveys. Luca is currently compiling, cleaning and reinterpreting this geophysical database to prioritize the more than 38 exploration targets identified across the Campo Morado concession package.
All drill core splits reported were analysed by Bureau Veritas of Durango, Mexico. A robust system of standards, 1/4 core duplicates and blanks were implemented in the 2025 exploration drilling program.
The technical information contained in this news release has been reviewed and approved by Mr. Paul D. Gray, P.Geo., Vice-President Exploration at Luca Mining.
Luca Mining Corp. (TSX-V: LUCA, OTCQX: LUCMF, Frankfurt: Z68) is a Canadian mining company with two wholly owned mines located in the Sierra Madre mineralized belt in Mexico. These mines produce gold, copper, zinc, silver, and lead and generate strong cash flow.
The Company’s Campo Morado Mine hosts VMS-style, polymetallic mineralization within a large land package comprising 121 square kilometres. The Tahuehueto Mine is a large property of over 100 square kilometres in Durango State. Luca has successfully commissioned its mill and is now in commercial production at Tahuehueto.
Source: Luca Mining Corp.
