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Highlander Silver Reports Record Results and New Discovery: 23.9m at 20.82 g/t Gold and 31.53 g/t Silver and 23.4m at 11.70 g/t Gold and 26.10 g/t Silver in Shallow Drilling

Drill Results

Highlander Silver Reports Record Results and New Discovery: 23.9m at 20.82 g/t Gold

and 31.53 g/t Silver and 23.4m at 11.70 g/t Gold and 26.10 g/t Silver in Shallow Drilling

Toronto, Ontario, December 01, 2025 – Highlander Silver Corp. (TSX: HSLV; “Highlander

Silver” or the “Company”) is pleased to report exceptional assay results from shallow drilling at

its expanding Bonita vein system. These results include the highest grades reported to date and

the discovery of a new zone in step -out drilling over 200m northwest of prior holes along trend.

The Bonita vein system is exposed along a ridgeline approximately 10km to the south of the

bonanza grade Ayelen deposit at the San Luis gold-silver project in Central Peru.

Highlights are listed below, with corresponding image s in Figure s 1-2 and detailed results in

Tables 1-2.

Highlights

• BOD-025 returned 27.0m of 5.28 grams per tonne (“g/t”) gold (“Au”) and 52.97 g/t

silver (“Ag”) from near surface at 2.3m downhole, marking the discovery of the

Urpicha zone over 200m northwest of the nearest hole in BOD-003 (14.5m of 3.70 g/t

Au and 17.47 g/t Ag from 25.7m depth – see press release dated July 29, 2025)

• The Urpicha discovery confirms the potential of the Bonita vein system to host strong

mineralization near surface to the northwest of prior drilling where multiple parallel

structures remain to be tested and the zone remains open along strike

• BOD-023 tested the Kusy zone and intersected one of the broadest continuous

intervals of near surface high grade mineralization reported to date, with 23.9m of

20.82 g/t Au and 31.53 g/t Ag returned from 21.0m downhole, in a hole oriented to the

south of previously reported BOD-021 (23.6m of 15.56 g/t Au and 74.49 g/t Ag from 8.8m

depth – see press release dated October 6, 2025)

• BOD-022, also testing the Kusy zone, returned 23.4m of 11.70 g/t Au and 26.10 g/t

Ag from 13.5m downhole from a platform to the southeast of BOD-019 (7.4m of 8.10

g/t Au and 6.55 g/t Ag from 48.4m depth – see press release dated October 6, 2025)

• The Company is incorporating the results of Phase I, including the assay results of

the drilling to-date, processing and analyzing the drone-based geophysical survey

to identify permissive structural features across more than 5,000 hectares

encompassing the outcropping Bonita vein system and its potential extensions,

and integrating the latest drilling, mapping, soil and channel sampling results to

design the optimal drilling campaign for Phase II

• Preliminary results have revealed several zones exhibiting structural patterns and

geophysical signatures analogous to those hosting mineralization tested by recent

drilling, with newly identified targets to the west under cover, to the east, and along

strike – complete analysis is expected to be available in the New Year

Figure 1 – Plan View of Bonita Vein System

Bonita

3D Looking NW

Today’s Results

Prior Results

BOD-025

BOD-024

BOD-022 BOD-023

Kusy

Urpicha

Figure 2 – Image of Core from BOD-025 (22.6m to 25.6m)

Note: Portion of high grade interval displaying silicified breccia and veinlets in andesite.

Table 1 – Assay Results

Hole ID From

(m)

To

(m)

Interval

(m)

Au

(g/t)

Ag

(g/t)

BOD-022 13.5 36.9 23.4 11.70 26.10

BOD-023 21.0 44.9 23.9 20.82 31.53

BOD-024 42.8 49.2 6.4 1.06 2.66

BOD-025 2.3 29.2 27.0 5.28 52.97

and 107.4 111.7 4.3 3.01 10.00

and 134.0 137.0 3.0 6.80 30.51

Note: Reported intervals are apparent widths as the full geometry of the mineralized structures has not yet been fully

modelled. Assays were not capped, and composite intervals are calculated using a minimum weighted average of 0.5

g/t Au, over a minimum core length of 2m, allowing internal dilution.

Table 2 – Collar Locations

Hole ID Easting

(m)

Northing

(m)

Elevation

(m)

Depth

(m)

Azimuth

(°)

Dip

(°)

BOD-022 188029 8953820 3995 83.5 45 -40

BOD-023 188029 8953819 3995 78.0 120 -35

BOD-024 188006 8953861 3996 90.0 80 -35

BOD-025 187824 8953953 3955 152.5 65 -35

Technical Information and Quality Control / Quality Assurance

All drilling was completed with HQ core. The drill core is split in half using a diamond saw. Core

is logged by the Company’s geologist on site who outlines the intervals to be sampled. The

maximum sample length is 1.5 meters and lengths are adjusted according to lithological and/or

mineralogical contacts.

After sawing, one-half of the core is kept on site in core boxes, and the other half is submitted for

analysis. Individual sample bags are sealed and placed into larger bags, which are then sealed

and marked with the contents.

Samples are transported by Highlander Silver personnel to ALS Peru S.A. (“ALS”) located in

Lima, Peru, where they are prepared and analyzed. ALS is independent of the Company.

In ALS, the entire sample is crushed to approximately 80% passing through a 2mm sieve. A 500

g fraction is pulverized. Gold concentration is determined by fire assay of a 30-gram charge with

an AA finish (Au-AA23). Silver, lead, copper, and zinc, along wit h other elements, are analyzed

by ICP utilizing a four -acid digestion (ME -ICP61). Over-limit samples for Au (10 g/t Au) follow

gravitational finishing Au -GRA21 (30g sample). Over -limit samples for Ag (100 g/t Ag) follow

gravitational finishing Ag-GRA21 (30g sample).

The internal QA/QC program includes the submission of field duplicates (1/4 core), pulp and

coarse reject duplicates, and the insertion of commercial standards and blanks (coarse and fine).

Control samples account for more than 15% of the total samples sent, in addition to the

laboratory’s internal quality assurance programs.

The Company is not aware of any drilling, sampling, recovery, or other factors that could materially

affect the accuracy or reliability of the data referred to herein.

The scientific and technical information, including the drillhole data, has been verified by Dr.

Sergio Gelcich. This verification involves data validation and quality assurance procedures, such

as reviewing logging directly in front of the core, analyzing database integrity, conducting quality

assurance and quality control (QA/QC) for assays, and cross-checking the original lab certificates.

Qualified Person

The scientific and technical information in this press release has been reviewed and approved by

Dr. Sergio Gelcich, P.Geo., Vice President, Exploration, Highlander Silver, who is a “Qualified

Person” as defined in National Instrument 43-101 Standards of Disclosure for Mineral Projects.

On behalf of Highlander Silver

“Daniel Earle”

President & CEO, Director

Information contact

Arun Lamba, Vice President Corporate Development

[email protected]

About Highlander Silver

Highlander Silver is primarily focused on advancing the bonanza grade San Luis gold -silver

project that is located adjacent to the past-producing Pierina mine in Central Peru. San Luis hosts

Indicated Mineral Resources of 356 koz Au at 24.4 g/t Au and 8.4 Moz Ag at 579 g/t Ag and ranks

among the 10 highest grade projects globally in both gold and silver categories.1 The Company’s

significant shareholders include the Augusta Group, which boasts an exceptional track record of

value creation totaling over $4.5 billion in exit transactions, and strategic shareholders, the Lundin

family and Eric Sprott.

1S&P Global rankings including the San Luis gold-silver project.

The mineral resource estimate disclosed herein is derived from Highlander Silver’s technical

report titled “Technical Report on the San Luis Property” with an effective date of January 15,

2025, prepared by independent qualified person, Martin Mount, MSc MCSM FGS CGeol FIMMM

Ceng, and available on SEDAR+ at www.sedarplus.ca.

Forward-looking statements

Certain information contained in this news release constitutes “forward-looking information” under

Canadian securities legislation. This includes, but is not limited to , complete analysis of recent

exploration results is expected to be available in the New Year. Such forward looking information

or statements can be identified by the use of words such as “ramp up”, “attempting”, “intends”,

“believes”, “plans”, “suggests”, “targets” or “prospects” or variations (including negative variations)

of such words and phrases, or state that certain actions, events or results “will” be taken, occur,

or be achieved. Forward -looking information involves known and unknown risks, uncertainties,

and other factors which may cause the actual results, performance, or achieveme nts of the

Company and/or its subsidiaries to be materially different from any future results, performance,

or achievements expressed or implied by the forward -looking information. Such factors include,

among others, general business, economic, competitive , political and social uncertainties, the

actual results of current exploration activities, changes in project parameters as plans continue to

be refined, future prices of precious and base metals, accident, labour disputes and other risks of

the mining in dustry, and delays in obtaining governmental or stock exchange approvals or

financing. Although the Company has attempted to identify important factors that could cause

actual actions, events or results to differ materially from those described in forward -looking

information, there may be other factors that could cause actions, events or results to differ from

those anticipated, estimated or intended. Forward-looking information contained herein are made

as of the date of this news release. There can be no assurance that forward-looking information

will prove to be accurate, as actual results and future events could differ materially from those

anticipated in such statements. The Company undertakes no obligation to update forward-looking

information if circumstances or management’s estimates or opinions should change, except as

required by applicable securities laws. Accordingly, the reader is cautioned not to place undue

reliance on forward-looking information.