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Silver One Provides CEO Update ON Its Nevada and Arizona Projects, Southwest USA Company Plans to Proceed Directly to Pre-Feasibilty at Candelaria

Management Changes

SILVER ONE PROVIDES CEO UPDATE ON ITS NEVADA AND ARIZONA PROJECTS,

SOUTHWEST USA

COMPANY PLANS TO PROCEED DIRECTLY TO PRE-FEASIBILTY AT CANDELARIA

Vancouver, BC – December 2, 2025 – Silver One Resources Inc. (TSXV: SVE; OTCQX: SLVRF; FSE: BRK1 – “Silver

One” or the “Company”) is pleased to provide an update to our shareholders on ongoing activities and work

planned at its Candelaria and Phoenix Silver projects.

Highlights

• Economic study at Candelaria to advance directly to Pre-feasibility (“PFS”).

• Drilling of heap leach pads to upgrade resource to Measured and Indicated.

• Induced Polarization (“IP”) survey at Phoenix Silver nears completion.

• Ground Penetrating Radar (“GPR”) and drone mag netometer surveys over “417” high -grade silver

target area at Phoenix Silver. Results may warrant a detailed gravity survey to follow.

Gregory Crowe, President and CEO commented: “Advancing toward the completion of a pre -feasibility study

at Candelaria marks a very significant step in moving the project to the Development stage. This more robust

and detailed study will provide greater confidence than a Preliminary Economic Assessme nt (“PEA”), and will

enable the Company to proceed with a Plan of Operations to facilitate the updating of existing permits. The

Company also continues to enhance the merits of its Phoenix Silver project in Arizona, which hosts both high-

grade silver and porphyry copper-silver prospects. Management looks forward to what could be a momentous

year in 2026.”

Candelaria

The Company continues to advance its flagship Candelaria past producing mine in Nevada, with the aim of

advancing it to the development stage. In May of this year (see News Release of May 6, 2025) an in-ground

mineral resource was announced and earlier , a leach pad resource (see News Release of August 18, 2020)

was reported. The property now hosts 108.18 million ounces of silver equivalent in the Measured and

Indicated categories and 29.46 million ounces of silver equivalent in the Inferred category (see News Release

of May 6, 2025 for complete technical details on the resource). The mineralization is open down-dip and along

strike, and continued drilling could potentially identify additional zones of mineralization.

The above resource was used to commence mine planning, production scheduling and economic evaluation.

Mine planning and production schedules, preliminary engineering and costing have been mostly completed.

The Company was moving towards the completion of a Preliminary Economic Assessment (“PEA”) by late

2025. H owever, Silver One will now be able to proceed directly to a Pre -Feasibility (“PFS”) level study as

confirmed by our study Qualified Persons (“QP’s”). Additional metallurgical testing is needed to optimize gold

and silver recoveries and validate previous results . T he upg rading of the heap leach pad resources to

Measured and Indicated will also be undertaken. This will result in a more accurate study and will allow for

the Company to proceed with a Plan of Operations (“PoO”), which will be required to update existing permits.

Work planned Candelaria

• Auger drilling in leach pads (LP1 and LP2) – estimated to be completed in early 2026.

• Resource update of leach pads - estimated to be completed in Q1 2026.

• Pilot Tests: Large columns using non-cyanide Extrakt’s solutions H1 2026.

• Pre-Feasibility Study (PFS): estimated to be completed Q2-Q3 2026.

• Plan of Operations: scheduled H2 2026.

Phoenix Silver, Arizona

Potential Porphyry Copper-Silver Exploration

On September 22, 2025, the Company announced the commencement of a ground IP/MT survey to investigate

and better define ZTEM (electromagnetic) copper-silver targets identified on the property. The survey has

proceeded slowly due to unexpected catastrophic rains that affected the area in late September 2025. These

storms severely damaged roads and made access to survey sites difficult. Rain and electric storms continued

in early November, further delaying the work. The fieldwork is now estimated to be completed by the end of

December with the interpretive report to follow.

The IP/MT survey is designed to test two priority porphyry targets that are in the southern part of the property,

where multiple select rock samples returned strongly elevated copper and silver values (see News Release of

Feb 20, 2025). This area is along strike and 5 km from Freeport McMoRan’s Miami-Inspiration copper mining

complex and BHP’s new Ocelot copper porphyry prospect. All occur within a 50+ long mineralized belt hosting

multiple copper and silver propertie s including BHP -Rio Tinto’s Resolution project, Capstone’s Pinto Valley

Mine and KGHM’s Carlota project, among others.

High-grade Silver Exploration

An east-west structure thought to be the host of the large silver vein fragments was drilled in late 2024 at the

417 area (see News Release Feb 24, 2025). Anomalous silver with copper, lead and zinc values were

encountered in many of the holes drilled. Although the mineralized structure was intersected, extremely high-

grade massive silver was not encountered. This suggests that the targeted massive silver may occur in

discontinuous ore shoots in-between drill intercepts, and/or at deeper depths.

A ground penetrating radar (“GPR”) and a drone-operated detailed magnetometer survey are planned in the

417 area with the goal to potentially better define silver targets . If successful, a close-spaced gravity survey

may be undertaken over specific targets. These surveys may also be extended to other silver targets including

the Mexican Mine and the Nuggets North target (see News Releases of September 22, and Feb 20, 2025).

Ongoing and planned work Phoenix Silver

• IP/MT survey in progress and estimated to be completed by year end, with final interpretation early

2026.

• Rock sampling of veins, structures, dumps and altered areas over the IP/MT area was completed in

October 2025. Assays are pending.

• GPR and drone magnetometer surveys over the 417 area – surveys estimated to be completed in late

2025 to early 2026, with interpretation to follow.

• Gravity test over 417 area if warranted - survey intended to assist in the definition of silver targets for

future drilling scheduled to follow-up on targets identified by the GPR and magnetometer surveys.

Qualified Person

The technical content of this News Release has been reviewed and approved by Robert M. Cann , P. Geo, a

Qualified Person as defined by National Instrument 43-101 and an independent consultant to the Company.

About Silver One

Silver One is focused on the exploration and development of quality silver projects. The Company owns a

100%-interest in its flagship project, the past -producing Candelaria Mine located in Nevada. Potential

reprocessing of silver from the historic leach pads at Candelaria provides an opportunity for possible near -

term production. Additional opportunities lie in unmined historic resources as well as in previously identified

high-grade silver interce pts down -dip, which can potentially increase the substant ive silver mineralization

along-strike from the two past-producing open pits.

The Company owns 636 lode claims and five patented claims on its Cherokee project located in Lincoln County,

Nevada, host to multiple silver-copper-gold vein systems, traced to date for over 11 km along-strike.

Silver One also has 100% interest in the Silver Phoenix Project. The Silver Phoenix Project is a very high-grade

native silver prospect, recently permitted for drilling, which lies within the “Arizona Silver Belt,” immediately

adjacent to the prolific copper producing area of Globe, Arizona.

For more information, please contact:

Silver One Resources Inc.

Gary Lindsey - VP, Investor Relations

Phone: 604-974‐5274

Mobile : (720) 273-6224

Email : [email protected]

Forward-Looking Statements

Information set forth in this News Release contains forward-looking statements that are based on assumptions

as of the date of this News Release . These statements reflect management's current estimates, beliefs,

intentions, and expectations. They are not guarantees of future performance. Silver One cautions that all

forward-looking statements are inherently uncertain, and that actual performance may be affected by a

number of material factors, many of which are beyond Silver One's control. Such factors include, among other

things: risks and uncertainties relating to Silver One's limited operating history, ability to obtain sufficient

financing to carry out its exploration and development objectives on the Candelaria Project, obtaining the

necessary permits to carry out its a ctivities and the need to comply with environmental and governmental

regulations. Accordingly, actual and future events, conditions and results may differ materially from the

estimates, beliefs, intentions and expectations expressed or implied in the forwa rd-looking information.

Except as required under applicable securities legislation, Silver One undertakes no obligation to publicly

update or revise forward-looking information.

NEITHER 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.