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Skyharbour’s Partner Company Mustang Energy Commences Field Program at 914W Uranium Project Located in the Athabasca Basin, Saskatchewan Vancouver, BC - Skyharbour Resources Ltd . (TSX-V: SYH) (OTCQX: SYHBF) (Frankfurt:

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

May 26th, 2025

News Release

Skyharbour’s Partner Company Mustang Energy Commences Field Program at 914W

Uranium Project Located in the Athabasca Basin, Saskatchewan

Vancouver, BC - Skyharbour Resources Ltd . (TSX-V: SYH) (OTCQX: SYHBF) (Frankfurt:

SC1P) (“Skyharbour” or the “ Company”) is pleased to announce that partner company Mustang

Energy Corp. (“Mustang”) has commenced its 2025 field exploration program at the 914W Uranium

Project (the “Project”), located in Athabasca Basin region. Mustang Energy may acquire a 75%

interest in the Project by issuing common shares having an aggregate value of CAD $480,000,

making aggregate cash payments of $275,000 to Skyharbour, and incurring an aggregate of

$800,000 in exploration expenditures on the property over a three-year period.

914W Property Map:

https://skyharbourltd.com/_resources/projects/914W-image2.jpg

The field program at the Project will involve surface prospecting activities, including detailed rock

and soil sampling, aimed at identifying zones of mineralization and alteration across target areas.

Results from this phase of exploration are expected to inform further exploration efforts, including

geophysical surveys and drilling in future phases. The program marks a step forward in Mustang’s

strategy to advance projects through systematic exploration.

“We’re excited to launch our first field program of the summer at 914W.” said Nick Luksha CEO of

Mustang Energy Corp. “The project area has encouraging geological features, and our upcoming

work is designed to generate meaningful results that will guide the next phases of exploration.”

914W Property Summary:

The 914W Project consists of one claim covering 1,260 hectares approximately 48 km southwest of

Cameco’s Key Lake Operation. Highway 914 runs through the western edge of the project, providing

excellent access for exploration. Historical geological mapping of the property and the surrounding

area has shown that the project is predominantly underlain by prospective Wollaston Supergroup

pelitic and psammitic to arkosic gneisses of the Western Wollaston Domain, which hosts significant

unconformity-related uranium mineralization in the Athabasca Basin as well as pegmatite -hosted

uranium mineralization elsewhere in the Wollaston Domain.

Despite the project’s proximity to Highway 914 and prospective geology, the project has seen limited

modern exploration work. The earliest work on the 914W property included airborne EM and

magnetic surveys and ground geological reconnaissance in 1968 -1970, lake water and sediment

sampling in 1976, ground VLF -EM, magnetic, and radiometric surveys, geological map ping,

trenching, as well as sampling on the project and surrounding areas. Immediately to the north of the

914W property, prospecting led to the discovery of the Scurry Rainbow Zone E (SMDI1961) and the

Don Lake Trenches (SMDI 1983), where up to 1,288 ppm U was encountered in drill hole ML -1

(SMDI1961) in a pyroxene-rich unit, and surface prospecting revealed up to 0.64% U3O8 in a trench

at Don Lake Zone E (SMDI 1983). More recently, the project has seen airborne geophysical

coverage by helicopter-borne VTEM (southern half) in 2005 and Tempest TDEM (northern half) in

2007, with prospecting, geological mapping, rock/sediment sa mpling and lake sediment s ampling

occurring on the project and surrounding areas in 2005 -2007. The project remains underexplored

and prospective for unconformity-related and pegmatite-hosted uranium and REE’s.

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., a Consulting Geologist for Skyharbour as well as a Qualified Person.

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 th e 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 constitute an

offer to sell o r 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.