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SYH.V ·

Skyharbour’s Partner Company UraEx Resources Commences Summer 2025 Drilling Program at South Dufferin Uranium Project, Athabasca Basin, Saskatchewan

Exploration Programs

Suite 1030 – 505 Burrard Street, Vancouver, BC, Canada, V7X 1M5

www.skyharbourltd.com

TSX-V Trading Symbol: SYH

Email: [email protected]

Telephone: (604) 558-5847

Facsimile: (604) 687-3119

July 15th, 2025

News Release

Skyharbour’s Partner Company UraEx Resources Commences Summer 2025 Drilling

Program at South Dufferin Uranium Project, Athabasca Basin, Saskatchewan

Vancouver, BC July 15th, 2025 - Skyharbour Resources Ltd. (TSX-V: SYH) (OTCQX: SYHBF)

(Frankfurt: SC1P) (“Skyharbour” or the “Company”) is pleased to announce that its earn-in option

partner, UraEx Resources Inc. (“UraEx”), has commenced an inaugural 2,600-metre diamond drilling

program at the South Dufferin Uranium Project (“South Dufferin” or the “Property”) located

immediately south of the southern margin of the Athabasca Basin, proximal to Cameco’s Centennial

deposit. UraEx can earn an initial 51% in the Property through CAD $4,600,000 in combined project

consideration and up to 100% through $9,800,000 in combined project consideration consisting of

cash and share payments as well as exploration expenditures over a five-year period.

South Dufferin Property Map:

https://skyharbourltd.com/_resources/images/SKY_SouthDufferin.jpg

2025 Exploration Program at South Dufferin:

UraEx has initiated a fully-funded, comprehensive diamond drilling program for the summer of 2025,

with approximately 2,600 metres of drilling planned across 8 to 12 drill holes. This is the first drilling

program at the project in over six years. The helicopter-supported program is designed to test the

southern extension of the Dufferin Lake Fault, which is interpreted to be the southern continuation

of the structural corridor that hosts Cameco’s Centennial deposit and Dufferin Lake zone to the north.

Drilling operations will be carried out by Apex Geoscience Ltd., under the supervision of Apex

personnel, and with operations based out of a local contracting camp with helicopter support for daily

drilling operations. The program will run through the summer and the budget for the program is

approximately CAD $1.5 million funded by UraEx.

Drilling will prioritize high-potential target areas characterized by historical geochemical anomalies,

gravity low signatures, and structural complexity along north-northeast-trending brittle fault corridors

on the South Dufferin property. These features are interpreted to represent favourable pathways for

uranium-bearing fluids and are considered key indicators for basement-hosted, high-grade uranium

mineralization in the Athabasca Basin.

Tom Meredith, CEO and Director of UraEx stated: “Bordering Cameco’s Centennial project is surely

a clear indication of our drill targets potential. The Athabasca Basin is the world’s leading uranium

district, responsible for roughly 20% of global production and home to several tier -one discoveries.

It has been well explored and understood for many years attracting billions of dollars of investment.

Making a discovery is our fundamental goal and our technical team is excited with these targets.”

South Dufferin Property Summary:

The South Dufferin project totals 13,204 hectares in ten claims and is located immediately south of

the southern margin of the Athabasca Basin in northern Saskatchewan. The property covers the

southern extension of the Virgin River Shear Zone, which hosts known high -grade uranium

mineralization at Cameco’s Dufferin Lake zone approximately 13 kilometres to the north (highlight

historical drill results of 1.73% U 3O8 over 6.5 metres) and Cameco ’s Centennial deposit

approximately 25 kilometres to the north (includes historical drill results up to 8.78% U3O8 over 33.9

metres).

South Dufferin Property Map:

https://skyharbourltd.com/_resources/images/SKY_SouthDufferin.jpg

Historical exploration work on South Dufferin consists of airborne EM, magnetic, gravity and

radiometric surveys, lake water and sediment sampling, prospecting and ground-truthing of airborne

anomalies, geological mapping, and diamond drilling. Some of the historical drill holes intersected

elevated uranium with locally anomalous base metal and boron concentrations as well as significant

clay alteration.

Exploration potential exists for basement-hosted uranium mineralization associated with the Dufferin

Lake fault and parallel faults within the Virgin Lake Shear zone. With numerous mineralized showings

to the north of the project, exploration efforts at South Dufferin have advanced the project to a

discovery-ready state. Significant exploration potential exists for basement -hosted uranium

mineralization associated with the Dufferin Lake fault, which has an apparent offset of >200 m, and

numerous other paral lel faults within the Virgin River Shear zone. The project is drill -ready with

several prospective targets warranting follow up work.

Most of the claims are in good standing for several years and there are no underlying royalties on

the property except for a 2% NSR on one of the claims owned by a third-party.

Qualified Person:

The technical information in this news release has been prepared in accordance with the Canadian

regulatory requirements set out in National Instrument 43-101 and reviewed and approved by Serdar

Donmez, P .Geo., VP Exploration for Skyharbour as well as a Qualified Person.

About UraEx Resources Inc.:

UraEx Resources Inc. is currently a private company focused on uranium projects in the Athabasca

Basin where it has an option to earn -in at the South Dufferin and Bolt projects . The company is

planning for upcoming drill programs at the projects as well as a go-public transaction soon. UraEx

is run by mining-industry executives and is backed by financiers in the investment industry.

About Skyharbour Resources Ltd.:

Skyharbour holds an extensive portfolio of uranium exploration projects in Canada's Athabasca

Basin and is well positioned to benefit from improving uranium market fundamentals with interest in

thirty-six projects covering over 614,000 hectares (over 1.5 million acres) of land. Skyharbour has

acquired from Denison Mines, a large strategic shareholder of the Company, a 100% interest in the

Moore Uranium Project, which is located 15 kilometres east of Denison's Wheeler River project and

39 kilometres south of Cameco's McArthur River uranium mine. Moore is an advanced -stage

uranium exploration property with high -grade uranium mineralization in several zones at the

Maverick Corridor. Adjacent to the Moore Project is the Russell Lake Uranium Project , in which

Skyharbour is operator with joint -venture partner RTEC. The project hosts widespread uranium

mineralization in drill intercepts over a large property area with exploration upside potential. The

Company is actively advancing these projects through exploration and drilling programs.

Skyharbour also has joint ventures with industry leader Orano Canada Inc., Azincourt Energy, and

Thunderbird Resources at the Preston, East Preston, and Hook Lake Projects, respectively . The

Company also has several active earn-in option partners, including CSE-listed Basin Uranium Corp.

at the Mann Lake Uranium Project; TSX-V listed North Shore Uranium at the Falcon Project; UraEx

Resources at the South Dufferin and Bolt Projects; Hatchet Uranium at the Highway Project; CSE-

listed Mustang Energy at the 914W Project; and TSX-V listed Terra Clean Energy at the South Falcon

East Project. In aggregate, Skyharbour has now signed earn-in option agreements with partners that

total to over $36 million in partner-funded exploration expenditures, over $20 million worth of shares

being issued, and $14 million in cash payments coming into Skyharbour, assuming that these partner

companies complete their entire earn-ins at the respective projects.

Skyharbour's goal is to maximize shareholder value through new mineral discoveries, committed

long-term partnerships, and the advancement of exploration projects in geopolitically favourable

jurisdictions.

Skyharbour’s Uranium Project Map in the Athabasca Basin:

https://www.skyharbourltd.com/_resources/images/SKY_SaskProject_Locator_2024-11-21_v1.jpg

To find out more about Skyharbour Resources Ltd. (TSX -V: SYH) visit the Company’s website

at www.skyharbourltd.com.

SKYHARBOUR RESOURCES LTD.

“Jordan Trimble”

Jordan Trimble

President and CEO

For further information contact myself or:

Nicholas Coltura

Investor Relations Manager

Skyharbour Resources Ltd.

Telephone: 604-558-5847

Toll Free: 800-567-8181

Facsimile: 604-687-3119

Email: [email protected]

NEITHER THE TSX VENTURE EXCHANGE NOR ITS REGULATION SERVICES PROVIDER

ACCEPTS RESPONSIBILITY FOR THE ADEQUACY OR ACCURACY OF THE CONTENT OF

THIS NEWS RELEASE.

The securities offered have not been, and will not be, registered under the United States Securities

Act of 1933, as amended (the "U.S. Securities Act") or any U.S. state securities laws, and may not

be offered or sold in the United States or to, or for the account or benefit of, United States persons

absent registration or an applicable exemption from the registration requirements of the U.S.

Securities Act and applicable U.S. state securities laws. This press release does not consti tute an

offer to sell or the solicitation of an offer to buy securities in the United States, nor in any other

jurisdiction.

This release includes certain statements that may be deemed to be "forward -looking statements".

All statements in this release, other than statements of historical facts, that address events or

developments that management of the Company expects, are forward-looking statements, including

the Private Placement. Although management believes the expectations expressed in such forward-

looking statements are based on reasonable assumptions, such statements are not guarantees of

future performance, and actual re sults or developments may differ materially from those in the

forward-looking statements. The Company undertakes no obligation to update these forward-looking

statements if management's beliefs, estimates or opinions, or other factors, should change. Factors

that could cause actual results to differ materially from those in forward-looking statements, include

market prices, exploration and development successes, regulatory approvals, continued availability

of capital and financing, and general economic, market or business conditions. Please see the public

filings of the Company at www.sedar.com for further information.