Mineros S.A. Identifies New High-Grade Vein System at the Nicaragua Property's Xiloa Target — 8.3 m at 17.3 g/t Au — Confirms High-Grade Continuity at Leticia with 1.2 m at 271.3 g/t Au
FOR IMMEDIATE RELEASE
Mineros S.A. Identifies New High-Grade Vein System at the Nicaragua Property's
Xiloa Target — 8.3 m at 17.3 g/t Au — Confirms High-Grade Continuity at Leticia
with 1.2 m at 271.3 g/t Au
Medellín, Colombia , May 26, 2026 Mineros S.A. (TSX:MSA, OTCQX: MNSAF, BVC:MINEROS) (" Mineros" or the
"Company") is pleased to report initial results from its 2026 diamond drilling campaign at the Nicaragua Property.
Results cover four target areas: Xiloa in the Pioneer Mine environs; the Leticia and Apoyo vein systems in the Porvenir
Polymetallic District; La Reforma at the Pioneer Mine; and infill delineation at the Panamá Mine.
HIGHLIGHTS
• New high-grade Vein System at Xiloa: 8.3 m at 17.3 g/t Au (core length) from 329.7 m depth (including 0.6m
at 58.7 g/t Au and 25.9 g/t Ag), located 1.2 kilometres northeast of the active Pioneer Mine; zone defined
over 400 metres of strike and 150 metres of vertical extent, open in all directions.
• Leticia Vein System confirms high-grade intercepts: 1.2 m at 271.3 g/t Au and 80.7 g/t Ag (core length) from
90.8 m depth; second high-grade shoot includes 1.9 m at 74.6 g/t Au and 15.6 g/t Ag from 218.6 m depth
(including 0.9 m at 133.0 g/t Au and 28.1 g/t Ag).
• Leticia North footwall splay: 0.9 m at 16.4 g/t Au and 13.9 g/t Ag (core length) from 69.1 m depth, defining
a new structural corridor open along strike.
• La Reforma NE step-out: 1.5 m at 15.3 g/t Au and 14.0 g/t Ag (core length) from 213.4 m depth, extending
the known mineralization approximately 100 metres in depth beyond the current mineral resource limit.
• Panamá Mine infill confirms grade continuity: 4.4 m at 8.9 g/t Au and 78.6 g/t Ag (core length) from 250.5
m depth (including 1.0 m at 18.4 g/t Au and 122.0 g/t Ag) in support of near-term mine planning.
*Core lengths; true widths are currently unknown. Grades are reported as uncut.
Carlos David Rios, Vice President of Exploration for Mineros, commented: "We are in the process of conducting
the most aggressive drilling program Mineros has ever executed in Nicaragua and the results we are achieving
reflect the highly prospective nature of the land package . We are simultaneously increasing mineral resource
confidence near current operations, extending the main vein systems through step- out drilling, and testing a
series of brownfield targets across our land package. Xiloa demonstrates the potential of what a robust drilling
program can deliver — a first-pass discovery, in our own backyard, sitting within reach of existing infrastructure.
Owning the majority of our drill fleet, combined with our established infrastructure and skilled local workforce,
gives us drilling cost below $100 /m; among the most competitive in Latin America."
The 2026 campaign is Mineros' most intensive drilling program to date at the Nicaragua Property, with 75,000 metres
planned with ten rigs operating simultaneously, eight company -owned and two contracted. The program drives
new-target drilling at Xiloa, step-out drilling at Leticia and La Reforma, and infill delineation at Panamá and Pioneer,
advancing the Company’s goal of increasing Mineral Resources and Mineral Reserves across the Nicaragua land
package.
Figure 1. Location Initial 2026 Drill Results at Nicaragua Property
Xiloa: New High-Grade Vein System
The Xiloa Vein System was d elineated by surface mapping and sampling as part of the Company's brownfield
exploration program and drill-tested for the first time in 2026. Xiloa is located approximately 1 .2 kilometres
northeast of the active Pioneer Mine, placing it within reach of existing infrastructure and access roads.
The first hole drilled in 2026, BXIDDH_26_001, returned 8.3 m at 17.3 g/t Au and 11.9 g/t Ag from 329.7 m depth
(including 0.6 m at 58.7 g/t Au and 25.9 g/t Ag). Follow-up holes BBONDD_26_0053 (5.2 m at 6.7 g/t Au and 11.2
g/t Ag) from 206.0 m depth and BBONDD_26_0051 (2.2 m at 6.2 g/t Au and 9.2 g/t Ag) from 212.8 m depth confirm
lateral continuity of the mineraliz ation. The five holes drilled to date preliminarily define the Xiloa zone over
approximately 400 metres of strike length and 150 metres of vertical extent; the system remains open laterally and
at depth in all directions.
Step-out drilling at Xiloa will continue through the second and third quarters of 2026, with holes targeting strike and
depth extensions of the high-grade mineralization identified. Given Xiloa’s proximity to existing mine infrastructure
at the P ioneer Mine , Xiloa represents a compelling near- term opportunity to add new Mineral Resources and
Mineral Reserves in the short to medium term, with the potential to be incorporated into the mine plan in a relatively
short timeline.
Table 1. Xiloa Target – 2026 Initial Drilling Results
Hole ID From (m) To (m) Length* (m) Au (g/t) Ag (g/t) Vein System
BXIDDH_26_001 329.7 338.0 8.3 17.3 11.9 Xiloa
incl. 332.9 333.6 0.6 58.7 25.9
BBONDD_26_0053 205.9 211.1 5.2 6.7 11.2 Xiloa
incl. 209.2 209.7 0.5 16.7 14.0
BBONDD_26_0054 381.2 381.7 0.5 6.5 5.8 Xiloa
BBONDD_26_0051 212.8 215.0 2.2 6.2 9.2 Xiloa
incl. 214.2 214.6 0.4 20.7 15.6
BBONDD_26_0052 331.6 336.5 4.9 3.7 4.5 Xiloa
incl. 334.5 335.5 1.0 8.2 5.9
*Core lengths; true widths are currently unknown. Grades are reported as uncut.
Figure 2. Plan View Xiloa Vein System
Figure 3. Long Section Xiloa Vein System
PORVENIR POLYMETALLIC DISTRICT – Leticia and Apoyo Vein Systems
The Porvenir Polymetallic District is one of the most significant growth platforms within the Mineros Nicaragua
Property — an emerging epithermal gold -silver-zinc system where recent exploration has defined a district -scale
mineralized corridor spanning mu ltiple spatially related deposits and targets. The district currently supports
approximately 736 Koz AuEq in Proven and Probable Mineral Reserves, 406 Koz AuEq in Measured and Indicated
Mineral Resources (exclusive of Mineral Reserves), and a further 313 K oz AuEq in the Inferred Resource category
(AuEq calculation methodology, metal price assumptions, and recoveries as disclosed in the Company's press release
dated March 31, 2026). The Leticia and Apoyo vein systems, located less than 500 metres from the Porvenir Project,
represent the leading edge of that expansion.
The 2026 program has returned high-grade intercepts across three vein systems within the district.
At Leticia, hole BLDDH_26_050 returned the strongest results, intersecting 1.2 m at 271.3 g/t Au and 80.7 g/t Ag
from 90.8 m depth and, deeper in the same hole, 1 .9 m at 74.6 g/t Au (including 0.9 m at 133.0 g/t Au and 28.1
g/t Ag) from 218.6 m — confirming two distinct high-grade shoots at depth; both intercepts are reported uncut.
At the Leticia North footwall splay, hole BLDDH_26_052 returned 1.5 m at 20.4 g/t Au and 7.9 g/t Ag from 85.4 m
depth (including 0.6 m at 55.2 g/t Au and 21.1 g/t Ag) and hole BLDDH_26_051 cut 0.9 m at 16.4 g/t Au and 13.9
g/t Ag from 69.1 m depth, defining a new structural corridor.
At the Apoyo Vein System, hole BAPDDH_26_011 intersected 0.9 m at 3.6 g/t Au and 20.0 g/t Ag from 231.1 m
depth, and hole BAPDDH_26_013 returned 5.9 m at 3.0 g/t Au and 10.3 g/t Ag from 232.0 m depth. All three vein
systems remain open along strike and at depth, supporting the case for continued drilling across the Porvenir
Polymetallic District.
Table 2. Porvenir Polymetallic District – Leticia North, Leticia and Apoyo Vein Systems – 2026 Drilling Results
Hole ID From (m) To (m) Length*
(m)
Au (g/t) Ag (g/t) Vein System
BLDDH_26_050 90.8 92.0 1.2 271.3 80.7 Leticia
BLDDH_26_052 85.5 87.0 1.5 20.4 7.9 Leticia North
incl. 86.5 87.0 0.5 55.3 21.1
BLDDH_26_051 69.1 70.1 0.9 16.4 13.9 Leticia North
BLDDH_26_051 72.4 73.7 1.2 3.2 5.3 Leticia North
BLDDH_26_050 218.6 220.6 1.9 74.6 15.6 Leticia (New Split)
incl. 218.6 219.6 0.9 133.0 28.1
BLDDH_26_051 312.0 313.4 1.4 2.8 18.5 Leticia
BAPDDH_26_011 231.0 231.9 0.9 3.6 20.0 Apoyo
BAPDDH_26_013 232.0 237.8 5.9 3.0 10.3 Apoyo
incl. 237.1 237.8 0.7 4.2 2.8
BAPDDH_26_012 174.9 176.3 1.4 3.4 8.7 Apoyo
incl. 175.8 176.3 0.5 8.1 16.4
*Core lengths; true widths are currently unknown. Grades are reported as uncut.
Figure 4. Plan View Leticia and Apoyo Vein Systems
Figure 5. Long Section Leticia North Vein Systems