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Skyharbour Announces the Closing of its Acquisition of 100% of the South Dufferin Uranium Project from Denison Mines in the Athabasca Basin, Saskatchewan

Mergers & Acquisitions Property Options & Staking

Suite 1610 – 777 Dunsmuir Street, Vancouver, BC, Canada, V7Y 1K4

www.skyharbourltd.com

TSX-V Trading Symbol: SYH

Email: [email protected]

Telephone: (604) 687-3376

Facsimile: (604) 687-3119

May 31st, 2023

NEWS RELEASE

Skyharbour Announces the Closing of its Acquisition of 100% of the South Dufferin

Uranium Project from Denison Mines in the Athabasca Basin, Saskatchewan

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

SC1P) (the “Company”) is pleased to announce that further to it’s news release dated April 27 th,

2023, the Company has completed its acquisition of 100% of the South Dufferin Uranium Project

(“South Dufferin” or the “Project”) from Denison Mines Corp. (“Denison”) through share and cash

payments. The South Dufferin Project comprises 12,282 hectares (30,349 acres) over nine claims

in the Athabasca Basin, which is host to the highest -grade uranium deposits in the world and is

consistently ranked as a top mining jurisdiction by the Fraser Institute.

South Dufferin Property Map:

https://skyharbourltd.com/_resources/images/South-Dufferin-Property-Map.jpg

With the recent acquisition of South Dufferin , Skyharbour’s total land package that it has

ownership interest in is now 504,356 hectares (1,246,290 acres), across twenty-four properties,

representing one of the largest project portfolios in the region. As the Company remains focused

at its ongoing 10,000m drill program at the Russell Lake project, South Dufferin will become a

part of Skyharbour’s prospect generator business as the Company will seek strategic partners to

advance this asset.

Skyharbour’s New Uranium Project Portfolio Map:

https://www.skyharbourltd.com/_resources/maps/SKY_SaskProject_Locator_V2C.jpg

Summary of South Dufferin Project:

The South Dufferin project totals 12,282 hectares in eight 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 Corp.' s Dufferin Lake zone approximately 13 kilometres to the north

(highlight drill results of 1.73% U 3O8 over 6.5 metres) and Cameco Corp.'s Centennial deposit

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

metres).

South Dufferin Property Map:

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https://skyharbourltd.com/_resources/images/South-Dufferin-Property-Map.jpg

Historical exploration work on the Project consists of airborne EM, magnetic, 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 pr oject 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 parallel faults within the Virgin River Shear zone.

The project is drill ready with numerous prospective targets warranting follow up work.

South Dufferin Target Map:

https://skyharbourltd.com/_resources/images/South-Dufferin-Target-Map.png

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. Skyharbour also owns a 922 hectare claim

adjacent to South Dufferin bringing the cumulative total to 13,204 hectares (32,628 acres) over

ten claims.

Terms of the Agreement:

Skyharbour acquire d a 100% interest in the South Dufferin project in consideration for the

issuance of 6,000,000 shares , 1,000,000 non-transferable share purchase warrant s (the

"Warrant"), and a cash payment totaling CAD $125,000. Each Warrant will entitle Denison to

purchase one common share of Skyharbour for a period of two years at a price of $0.60 per share.

No finders’ fees were paid in relation to the acquisition of the South Dufferin Property . The

transaction constitutes a Related Party Transaction in accord ance with MI 61 -101 due to a

common director on each of the Company and Denison’s Board. The Company is relying on the

exemption from the formal valuation requirement contained in section 5.5 and the minority

shareholder approval requirement contained in section 5.7 of MI 61-101.

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 David Billard, 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 twenty-

four projects, ten of which are drill-ready, covering over 504,356 hectares 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 at the Maverick Zone that

returned drill results of up to 6.0% U3O8 over 5.9 metres including 20.8% U3O8 over 1.5 metres at

a vertical depth of 265 metres. Adjacent to the Moore Uranium Project is Skyharbour’s recently

optioned Russell Lake Uranium Project from Rio Tinto, which hosts historical high-grade uranium

drill intercepts over a large property area with robust exploration upside potential. The Company

is actively advancing these projects through exploration and drill programs.

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Skyharbour has joint-ventures with industry-leader Orano Canada Inc. and Azincourt Energy at

the Preston and East Preston Projects, respectively, whereby Orano and Azincourt earned

majority interests in the project s through exploration expenditures, cash payments and share

issuances. Skyharbour also has several active earn-in option partners including: ASX-listed Valor

Resources at the Hook Lake Uranium Project; CSE-listed Basin Uranium Corp. at the Mann Lake

Uranium Project; CSE-listed Medaro Mining Corp. at the Yurchison Project; Yellow Rocks Energy,

a private Australian entity, at the Wallee and Usam Island projects; North Shore Energy Metals at

the South Falcon Project; and TSX-V listed Tisdale Clean Energy at the South Falcon East Project

which is host to the Fraser Lakes Zone B Uranium and Thorium Deposit.

Collectively, Skyharbour has now signed earn-in option agreements with partners that total to

over $37 million in partner -funded exploration expenditures, over $28 million worth of shares

being issued and over $19 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/maps/SKY_SaskProject_Locator_20230320_V2A.jp

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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

Corporate Development and Communications

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 ac count 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 or th e 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 hist orical facts, that address events or

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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 results 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.