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Sun Summit Reports Significant High-Grade Gold, Silver and Copper Mineralization from Rock Samples Across the JD Project, Toodoggone District

Exploration Programs

Sun Summit Reports Significant High-Grade

Gold, Silver and Copper Mineralization from

Rock Samples Across the JD Project,

Toodoggone District

Vancouver, British Columbia--(Newsfile Corp. - October 29, 2025) - Sun Summit Minerals Corp. (TSXV:

SMN) (OTCQB: SMREF) (

"Sun Summit"

or the

"Company"

) is pleased to report assay results from

rock samples collected during a project-wide geological mapping and prospecting program at the JD

Project, Toodoggone Mining District, north-central British Columbia.

Highlights:

New high-grade copper-silver discovery:

Hand trenching through gossanous soil, south of the

Finn to Creek corridor, revealed semi-massive to massive copper sulfides in a discrete vein

traced in subcrop for over 5 meters. Two samples returned very high-grade copper and silver:

73.6% copper with 6,320 g/t silver (J506225) and 72.4% copper with 4,370 g/t silver

(J506222)

. The strike-extent of this zone of mineralization is unknown.

New priority drill target

: Systematic rock samples taken from 1980's historical trenches at Belle

North, south of the Finn to Creek corridor returned high-grade gold and silver results:

14.2 g/t gold

with 56.6 g/t silver (J506201) and 9.46 g/t gold with 43.5 g/t silver (J507946)

. The Belle North

vein-system has never been drill-tested and represents a priority gold-silver target for upcoming

drill programs.

High-grade gold and silver mineralization along the Finn to Creek Corridor:

Sampling north

of the historical JD West and Schmidt showings returned high-grade gold and silver results:

43.6

g/t gold with 57.6 g/t silver (J507915) and 26.9 g/t gold with 38.9 g/t silver (J507914)

. Both

historical high-grade showings have not been adequately drill-tested and represent priority gold-

silver targets for upcoming drill programs.

Comprehensive project-wide rock sampling:

The field program included the collection of over

650 rock samples across the JD Project with results from 532 samples still pending. And

additional 8 samples were taken for whole rock analysis to assist with lithogeochemical

interpretation.

Additional drill results from the 6,864 meter drill program pending:

The final batch of core

samples have now been shipped to the lab with results from 20 drill holes pending.

"We are pleased to report new assay data from recently completed geological mapping and prospecting

surveys from across the JD Project, including the discovery of a very high-grade zone of copper-silver

mineralization." said Niel Marotta, CEO of Sun Summit Minerals. "This work will greatly assist with drill

target definition in conjunction with interpretation of the 2025 IP surveys. The company is planning further

work, including additional sampling and drilling, to better define the extent and grade of the discovered

mineralization."

Geological Mapping and Prospecting

Project-wide geological mapping and prospecting focused on advancing the geological and structural

understanding of the Finn to Creek corridor, as well as target refinement at the Belle North, Oxide Peak,

JD porphyry trend and McClair east areas, was conducted over a 20+ day initiative. A total of 1,387

geological waypoint stations were established and over 650 rock chip samples were collected.

Table 1: Highlights of 2025 Rock Sample Geochemistry

Zone

Sample ID

Au (g/t)

Ag (g/t)

Cu (%)

Pb (%)

Zn (%)

A535

J506225

0.18

6320

73.6

0.00

0.00

A535

J506222

0.09

4370

72.4

0.00

0.00

A535

J506214

0.14

208

3.6

0.02

0.00

A535

J506221

0.03

144

0.47

0.00

0.01

A535

J506223

0.00

20.5

0.88

0.00

0.01

Belle North

J506201

14.20

56.6

0.16

0.58

0.28

Belle North

J507998

10.70

12.6

0.02

0.01

0.00

Belle North

J507946

9.46

43.5

0.05

0.40

0.05

Belle North

J506202

5.72

7.0

0.03

0.35

0.11

Belle North

J507949

3.79

27.8

0.07

0.72

0.11

Belle North

J507947

3.38

6.3

0.02

0.29

0.25

Finn to Creek Corridor

J507914

26.90

38.9

0.03

0.30

0.18

Finn to Creek Corridor

J507915

43.60

57.6

0.10

1.80

0.15

Finn to Creek Corridor

J507912

6.54

26.0

0.02

0.25

0.09

Finn to Creek Corridor

J507913

2.55

26.4

0.02

0.10

0.05

Finn to Creek Corridor:

Geological mapping and prospecting along the Finn to Creek corridor was

focused on two key target areas; the historic Schmidt and JD West zones. The Schmidt zone, 1.4 km

west of the Finn Zone, consists of a boulder train of siliceous breccias and banded quartz veins that have

historically yielded assays of up to 326 g/t Au with 1,535 g/t Ag, and 64.5 g/t Au with 6,151 g/t Ag.

Sampling north of the main target area returned 43.6 g/t gold with 57.6 g/t silver (Figures 1 and 2, Table

1).

The JD West target covers the gap between the Finn and Schmidt zones where the potential strike-

extension of the Finn zone is locally exposed in historic trenches and has been drill tested in several,

widely-spaced, shallow holes (see

February 1, 2024

news release). The area is spatially associated with

a broad gold-in-soil geochemical anomaly and the historic Ag-Carbonate zone where grab sampling

from quartz-carbonate breccias, hosted along steeply dipping, north-striking normal faults, yielded up to

14.1 g/t Au with 1,601 g/t Ag. Sampling ~150 meters north of the main JD West area returned up to 26.9

g/t gold with 38.9 g/t silver (Figures 1 and 2, Table 1).

The Schmidt and JD West targets have not been adequately drill-tested and both areas represent

priority targets for future drill programs.

Figure 1

. Map of the Finn to Creek Corridor showing compiled historic rock sampling gold

results (see the Company's news release dated

May 2

nd

, 2024

) and new data (Pink callouts).

To view an enhanced version of this graphic, please visit:

https://images.newsfilecorp.com/files/6142/272328_c88aced9d41008a5_001full.jpg

Figure 2

. Map of the Finn to Creek Corridor showing compiled historic rock sampling silver

results (see the Company's news release dated

May 2

nd

, 2024

) and new data (Pink callouts).

To view an enhanced version of this graphic, please visit:

https://images.newsfilecorp.com/files/6142/272328_c88aced9d41008a5_002full.jpg

Figure 3

: Photos of sampled hydrothermal breccias from the northern extent of the 4.5 km long

Finn to Creek Corridor (Figures 1 and 2).

To view an enhanced version of this graphic, please visit:

https://images.newsfilecorp.com/files/6142/272328_c88aced9d41008a5_003full.jpg

New High-Grade Copper-Silver target - A535:

Prospecting by the soil crew working on the Kadah North

soil grid discovered an area of gossanous soil approximately 3.0 km south of the Finn to Creek corridor

in an area lacking historic rock or soil sampling. Hand trenching revealed semi-massive to massive

copper sulfides with strong malachite in a discrete vein traced in subcrop for over five meters. Two

samples returned very high-grade copper and silver:

73.6% copper with 6,320 g/t silver (J506225)

and 72.4% copper with 4,370 g/t silver (J506222)

. The strike-extent of this zone of high-grade

copper-silver mineralization is unknown. Further trenching and prospecting is warranted.

Figure 4

. Map of the newly discovered A535 target and the historic Belle North target showing

compiled historic rock sampling copper results (see the Company's news release dated

May

2

nd

, 2024

) and new data (Pink callouts).

To view an enhanced version of this graphic, please visit:

https://images.newsfilecorp.com/files/6142/272328_c88aced9d41008a5_004full.jpg

Belle North Trenches

:

Gold-silver mineralization at the Belle North target (Figure 5) is hosted in a

northwest - southeast striking structural zone, traced in historic trenching for over 200 meters. The zone

is characterized by a ~20 meter wide, northwest trending corridor of argillic alteration cored by sulphide

bearing (pyrite, galena, and sphalerite) siliceous breccias and at least 5 parallel epithermal veins with

minor barite. Historic sampling by Manson Creek Resources in 1985 reportedly returned up to 107 g/t

gold and 103 g/t silver

1

. Sampling of the trenches in 2025 returned up to 14.20 g/t gold with 56.6 g/t

silver (J506201) and 9.46 g/t gold with 43.5 g/t silver (J507946). Based on the mapping and sampling

results, the Belle North target is considered a priority area for future drill programs.

Figure 5

. Photos of the Belle North trenches showing predominate fractures and veins with

sampled veins

.

To view an enhanced version of this graphic, please visit:

https://images.newsfilecorp.com/files/6142/272328_c88aced9d41008a5_005full.jpg

Next Steps

Assay and geochemical results from an additional 532 rock samples are pending. The majority of the

pending results are from detailed mapping and prospecting traverses across the JD Porphyry Trend,

along McClair Creek. These results, together with soil geochemical results will be reported once

received and interpreted.

All drill core samples from the 6,864 meter, 21 hole program have now been shipped to the lab, including

the four follow-up holes northwest of previously released CZ-25-007 (78.0 meters of 3.72 g/t gold from

30.0 meters downhole, see the Company's news release dated

September 8, 2025

).

Figure 6

. Map of the Toodoggone District showing the location of the JD Project in relation to

other development and exploration projects. Data sourced from Thesis Gold Inc., TDG Gold

Corp. and Centerra Gold Inc.'s respective corporate websites. The QP has been unable to verify

the information and that the information is not necessarily indicative to the mineralization on

the property that is the subject of the disclosure.

To view an enhanced version of this graphic, please visit:

https://images.newsfilecorp.com/files/6142/272328_c88aced9d41008a5_006full.jpg

Quality Assurance and Quality Control

Rock samples were bagged onsite and delivered to ALS Laboratories in Kamloops, British Columbia.

ALS is certified with ISO/IEC 17025:2017 and ISO 9001:2015 accreditation from the Standards Council

of Canada.

Rock samples were prepared (PREP-31) and then analysed for 48 elements by ICP-MS on a 0.25-gram

aliquot using a four-acid digestion (method ME-MS61). Gold was analyzed by fire assay on a 30-gram

aliquot with an AES finish (Au-ICP21). Samples that returned >10 parts per million (ppm) gold were re-

analyzed by fire assay using a gravimetric finish on a 30-gram aliquot (method Au-GRA21). Overlimit

samples (e.g. Ag, Cu) were re-analyzed using an ore-grade, four-acid digestion and ICP-AES finish

(method ME-OG62). Samples that returned > 50% Cu were re-analyzed using a 4-acide digestion and a

volumetric finish (Cu-VOL61).

In addition to ALS Global laboratory QA/QC protocols, Sun Summit implements a rigorous internal

QA/QC program that includes the insertion of duplicates, certified reference materials (standards

prepared by an independent lab) and blanks into the sample stream.

Rock samples taken while prospecting referenced in this news release are selective in nature and

collected to determine the presence or absence of mineralization and may not necessarily reflect the true

nature and grade of the underlying mineralization.

National Instrument 43-101 Disclosure

This news release has been reviewed and approved by Sun Summit's Vice President Exploration, Ken

MacDonald, P. Geo., a "Qualified Person" as defined in National Instrument 43-101

Standards of

Disclosure for Mineral Projects

of the Canadian Securities Administrators. Mr. MacDonald has verified

the data disclosed in this press release, including the sampling, analytical and test data underlying this

information that has been collected by Sun Summit. Verification procedures include industry standard

quality control practices. Some technical information contained in this release is historical in nature and

has been compiled from public sources believed to be accurate. The historical technical information has

not been verified by Sun Summit and may in some instances be unverifiable dependent on the existence

of historical drill core and grab samples. Management cautions that past results are not necessarily

indicative of the results that may be achieved on the property.

Community Engagement

Sun Summit is engaging with First Nations on whose territory our projects are located and is discussing

their interests and identifying contract and work opportunities, as well as opportunities to support

community initiatives. The Company looks forward to continuing to work with local and regional First

Nations with ongoing exploration.

About the JD Project

The JD Project is located in the Toodoggone mining district in north-central British Columbia, a highly

prospective deposit-rich mineral trend. The project covers an area of over 15,000 hectares and is in

close proximity to active exploration and development projects, such as Thesis Gold's Lawyers and

Ranch projects, TDG Gold's Baker-Shasta projects, Amarc Resource's AuRORA project, Centerra's

Gold's Kemess East and Underground projects, as well as the past-producing Kemess open pit copper-

gold mine.

The project is 450 kilometres northwest of the city of Prince George, and 25 kilometres north of the

Sturdee airstrip. It is proximal to existing infrastructure in place to support the past-producing Kemess

mine, including roads and a hydroelectric power line.

The JD Project is in a favourable geological environment characterized by both high-grade epithermal

gold and silver mineralization, as well as porphyry-related copper and gold mineralization. Some

historical exploration, including drilling, geochemistry and geophysics, has been carried out on the

property, however the project area is largely underexplored.

About Sun Summit

Sun Summit Minerals (TSX-V: SMN; OTCQB: SMREF) is a mineral exploration company focused on the

discovery, expansion and advancement of district scale gold and copper assets in British Columbia. The

Company's diverse portfolio includes the JD and Theory projects in the Toodoggone region of north-

central B.C., and the Buck Project in central B.C.

Further details are available at

www.sunsummitminerals.com

.

References

1

.

Millinoff, T.B. and Davis, J.W., (1986), Geochemical and trenching report on the Belle 1, 2, and 4 Mineral Claims, Omineca Mining Division,

Assessment Report Indexing System, Report 14489, https://apps.nrs.gov.bc.ca/pub/aris/

Link to Figures

Figure 1:

https://wp-sunsummitminerals-2024.s3.ca-central-

1.amazonaws.com/media/2025/10/20251029_NewsRelease_Figure-1-scaled.jpg

Figure 2:

https://wp-sunsummitminerals-2024.s3.ca-central-

1.amazonaws.com/media/2025/10/20251029_NewsRelease_Figure-2-scaled.jpg

Figure 3:

https://wp-sunsummitminerals-2024.s3.ca-central-

1.amazonaws.com/media/2025/10/20251029_NewsRelease_Figure-3.png

Figure 4:

https://wp-sunsummitminerals-2024.s3.ca-central-

1.amazonaws.com/media/2025/10/20251029_NewsRelease_Figure-4-scaled.jpg

Figure 5:

https://wp-sunsummitminerals-2024.s3.ca-central-

1.amazonaws.com/media/2025/10/20251029_NewsRelease_Figure-5.png

Figure 6:

https://wp-sunsummitminerals-2024.s3.ca-central-

1.amazonaws.com/media/2025/10/20251029_NewsRelease_Figure-6.jpg

On behalf of the board of directors

Niel Marotta

Chief Executive Officer & Director

[email protected]

For further information, contact:

Matthew Benedetto, Simone Capital

[email protected]

Tel. 416-817-1226

Forward-Looking Information

Statements contained in this news release that are not historical in nature may be "forward-looking

information" within the meaning of applicable Canadian securities legislation ("

forward-looking

statements

"), which involve risks, uncertainties and other factors that could cause actual results to differ

materially from those expressed or implied by such forward-looking statements. These forward-looking

statements, by their nature, require Sun Summit to make certain assumptions and necessarily involve

known and unknown risks and uncertainties that could cause actual results to differ materially from those

expressed or implied in these forward-looking statements. Forward-looking statements are not

guarantees of performance. Words such as "may", "will", "would", "could", "expect", "believe", "plan",

"anticipate", "intend", "estimate", "continue", "objective", "strategy", or the negative or comparable

terminology, as well as terms usually used in the future and the conditional, are intended to identify

forward-looking statements. Forward-looking statements contained in this press release include, but are

not limited to: the timing of and size and scope of the drill program at the JD property; indications and

results from the drill program; the Company's exploration plans, expectations and forecasts; and the

impact of the drill program on drill target definition in conjunction with interpretation of the 2025 induced

polarization surveys. Information contained in forward-looking statements is based upon certain material

assumptions that were applied in drawing a conclusion or making a forecast or projection, including, but

not limited to: the assumptions, qualifications, limitations or statements relating to the pending results of

the drill holes; the success of the exploration program; the ability of exploration activities (including

drilling) to accurately predict mineralization, future drill programs and high-priority targets; our timing and

ability to receive assay results for the completed drill program; the reliability of historical information that

cannot be independently verified by Sun Summit; interests in the JD Project; errors in geological

modelling; the adjacent properties having any significance to the projects in which Sun Summit has an

interest; the anticipated results varying from current indications, including the already released drill

results; risks inherent in exploration activities; volatility and sensitivity to market prices; volatility and

sensitivity to capital market fluctuations; and fluctuations in metal prices. There is significant risk that the

forward-looking statements will not prove to be accurate, that management's assumptions may not be

correct and that actual results may differ materially from such forward-looking statements. Accordingly,

readers should not place undue reliance on the forward-looking statements.

The forward-looking

statements contained in this news release are made as of the date hereof or the dates specifically

referenced in this news release, where applicable. Except as required by applicable securities laws and

regulation, Sun Summit disclaims any intention or obligation to update or revise any forward-looking

statement, whether as a result of new information, future events or otherwise, except as required by

applicable securities laws. All forward-looking statements contained in this news release are expressly

qualified by this cautionary statement.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the

policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this

release.

To view the source version of this press release, please visit

https://www.newsfilecorp.com/release/272328