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Skyharbour’s JV Partner Orano Commences 6-7,000m Summer Drilling Program at the Preston Uranium Project Vancouver, BC - Skyharbour Resources Ltd . (TSX-V: SYH) (OTCQX: SYHBF) (Frankfurt: SC1P) (“Skyharbour” or the “Company”), is pleased to announce that its joint-venture partner, Orano

Exploration Programs Partnerships & JV

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

June 26th, 2025

News Release

Skyharbour’s JV Partner Orano Commences 6-7,000m Summer Drilling Program at the

Preston Uranium Project

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

SC1P) (“Skyharbour” or the “Company”), is pleased to announce that its joint-venture partner, Orano

Canada Inc. (“Orano”), recently commenced a large-scale diamond drilling program at the 49,635-

hectare Preston Uranium Project (“Preston” or the “Property”) located in the western Athabasca

Basin, Saskatchewan, Canada . The drilling program will consist of approximately 6,000 to 7,000

metres of drilling during the summer of 2025. Orano is the majority owner and operator at the project

with Skyharbour owning a minority interest of approximately 25.6%.

Location Map of Preston Project:

https://www.skyharbourltd.com/_resources/images/Sky_Preston.jpg

2025 Exploration Program at Preston:

The program for the Preston Project will consist of a helicopter-supported diamond drilling campaign,

totaling 6,000 to 7,000 metres, with up to 28 holes designed to test high-priority targets across the

property at depths ranging from 200 to 350 metres. Primary drill target areas (outlined in Figure 2)

include the previously untested Johnson Lake, the Canoe Lake and FSAN target. Target areas are

spread throughout the project to ensure assessment credits are met across all claims, while testing

perspective trends.

Figure 2: Target Area Overview – Preston Lake Project:

https://www.skyharbourltd.com/_resources/news/Figure_2_Target_Area_Overview.jpg

Drilling in the Johnson Lake area (Zone 1 ; Figure 2) will target a broad structural corridor initially

identified in an airborne VTEM survey and subsequently refined by a ground-based ML-TEM survey

in 2018 and a DC resistivity survey in 2020. Multiple parallel conductors exhibiting moderate to strong

responses have been delineated across the grid. A total of 4 to 5 drill holes are planned with an

average depth of 350 metres for a total of approximately 1,750 metres , contingent on results. The

primary objective is to test ground conductors at structurally complex intersections which are

considered highly prospective for uranium mineralization. There has been no drilling completed in

the Johnson Lake grid area to date.

Figure 3: Johnson Lake Grid Ground Conductors:

https://www.skyharbourltd.com/_resources/news/Figure_3_Johnson_Lake_Grid.jpg

The Canoe Lake area (Zone 2; Figure 2) comprises nine conductive trends that remain largely

untested, with only one to three historical drill holes completed on each to date. The 2025 program

aims to assess high-priority targets for uranium mineralization and to further define Canoe Lake as

a prospective discovery corridor within the Preston Lake Project.

A total of 6 to 12 diamond drill holes are planned, totalling approximately 1,200 to 2,400 metres, with

an average hole depth of 200 metres. Six zones of interest have been identified based on the review

of available airborne and ground geophysical data, c haracterized by gravity lows near interpreted

structural breaks and crosscutting magnetic features. Structural features in the southwestern portion

of the grid are of particular interest due to their orientation, which is analogous to the structural trends

controlling mineralization at the PLS and Arrow uranium deposits. These targets are on strike with

zones of brittle -ductile deformation and hydrothermal alteration observed in historical drilling,

supporting their potential for hosting basement-hosted uranium mineralization.

Figure 4: Canoe Lake Ground Gravity, Zones of Interest and 2025 Targets:

https://www.skyharbourltd.com/_resources/news/Figure_4_Canoe_Lake_Ground_Gravity_

and_Zones_of_Interest.jpg

The FSAN Zone (Zone 3; Figure 2) will be the most extensively tested area in the 2025 program,

with both reconnaissance and direct targeting strategies to be employed. Reconnaissance drilling

will consist of 3 holes totalling approximately 1,050 metres, focusing on discrete airborne EM

anomalies near the intersection of prospective east-west structures. An additional 7 to 14 holes will

be drilled using a more direct targeting approach for a total of 1,400 to 2,800 metres. These holes

will test gravity low anomalies, areas of magnetic disruption, and sites of high geochemical response,

including SGH uranium anomalies and historical surface grab samples with anomalous uranium and

pathfinder element concentrations.

Figure 5: FSAN 2025 Ground Gravity Results with Lineament and 2025 Targets:

https://www.skyharbourltd.com/_resources/news/Figure_5_FSAN_2025_Ground_Gravity_Results_

with_Lineament_and_2025_Targets.jpg

The West and Far West Grids (Zone 4; Figure 2) have been designated as contingency targets for

the 2025 drill program. These areas encompass the western extent of the PL -1 conductive trend,

where historical drilling intersected moderately to strongly graphitic, brittle -ductile fault zones with

localized hydrothermal alteration. The structural complexity observed in this area enhances its

prospectivity for basement-hosted uranium mineralization and warrants further investigation.

2024 Exploration Program Completed at Preston:

The 2024 field program marked the first exploration activities conducted by Orano at the Preston

Project since 2020. The program included a 35.6 km ground Moving-Loop Transient Electromagnetic

(ML-TEM) survey over the Preston West and Far West targets, focusing on an airborne VTEM

conductor at Preston West and following up on a prior reconnaissance survey at Preston Far West.

A ground gravity survey comprising 2,295 stations was also completed over an area encompassing

the FSAN and FSANE trends to help with drill target prioritization . In addition, a Spatiotemporal

Geochemical Hydrocarbon (SGH) geochemical survey comprising approximately 1,100 samples

was carried out during the summer of 2024. SGH is a cost -effective technique which has been

successfully used to detect surficial anomalies associated with buried uranium mineralization in the

Athabasca Basin.

Preston Uranium Project:

In March 2017, Skyharbour signed an option agreement with Orano (formerly AREVA Resources

Inc.) that provided Orano an earn -in option to acquire a majority working interest in the 49,635-

hectare Preston Uranium Project . The significant potential of the Project has been highlighted by

past discoveries in the area by NexGen Energy Ltd. (Arrow deposit), Fission Uranium Corp. (Triple

R deposit), and F3 Uranium Corp . (PLN discovery). Exploration at the Project has consisted of

ground gravity, airborne and ground electromagnetics, radon, soil, silt, biogeochem, lake sediment,

and geological mapping surveys, as well as exploratory drill programs. Over a dozen high -priority

drill target areas associated with multiple prospective exploration corridors have been succe ssfully

delineated through these methodical, multi-phased exploration initiatives, which have culminated in

an extensive, proprietary geological database for the project area.

Joint Venture and Strategic Partnership:

In early 2021, Orano fulfilled its earn-in option on the project by funding exploration expenditures and

making the required cash payments. Upon completion of a total of CAD $4.8 million in exploration

spending, a joint venture was established between Orano, Skyharbour, and Di xie Gold to advance

and develop the project. Orano currently holds a 53.3% interest in the joint venture, with Skyharbour

and Dixie Gold holding 25.6% and 21.1% interests, respectively.

Market Maker:

The Company has engaged the services of Independent Trading Group ("ITG") pursuant to an

agreement dated and starting on July 1st, 2025 (the “Agreement”) to provide market-making services

in accordance with TSX Venture Exchange (“TSX-V”) policies. ITG will trade shares of the Company

on the TSX-V and all other trading venues with the objective of maintaining a reasonable market and

improving the liquidity of the Company's common shares.

Under the terms of the Agreement, ITG will receive compensation of CAD $5,000 per month, payable

monthly in advance. The Agreement is for an initial term of one month and will renew for additional

one-month terms unless terminated by either party with 30 days' notice. There is no performance

factors contained in the Agreement and ITG will not receive shares or options as compensation. ITG

and the Company are unrelated and unaffiliated entities.

Independent Trading Group (ITG) Inc. is a Toronto based CIRO dealer -member that specializes in

market making, liquidity provision, agency execution, ultra -low latency connectivity, and bespoke

algorithmic trading solutions. Established in 1992, with a focu s on market structure, execution and

trading, ITG has leveraged its own proprietary technology to deliver high quality liquidity provision

and execution services to a broad array of public issuers and institutional investors.

Qualified Person:

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

regulatory requirements set out in National Instrument 43-101 and has been reviewed and approved

by Serdar Donmez, P.Geo., Vice President of Exploration for Skyharbour Resources, who is a

Qualified Person as defined by NI 43-101.

About Orano Canada Inc.:

Headquartered in Saskatoon, Saskatchewan, Orano Canada Inc. is a leading producer of uranium,

accounting for the processing of 16.9 million pounds of uranium concentrate in Canada in 2024.

Orano has been exploring for, mining and milling uranium in Canada for more than 60 years. Orano

Canada is the operator of the McClean Lake uranium mill and a major partner in the Cigar Lake,

McArthur River and Key Lake operations. The company employs over 450 people in Saskatchewan,

including about 375 at the McClean Lake operation where over 40% of employees are self-declared

Indigenous. As a sustainable uranium producer, Orano Canada is committed to safety,

environmental protection and contributing to the prosperity and well -being of neighbouring

communities.

Orano Canada Inc. is a subsidiary of the multinational Orano group. As a recognized international

operator in the field of nuclear materials, Orano delivers solutions to address present and future

global energy and health challenges. Its expertise and mastery of cutting-edge technologies enable

Orano to offer its customers high value-added products and services throughout the entire fuel cycle.

Every day, the Orano group’s 17,000 employees draw on their skills, unwavering dedication to safety

and constant quest for innovation, with the commitment to develop know -how in the transformation

and control of nuclear materials, for the climate and for a healthy and re source-efficient world, now

and tomorrow.

Visit Orano at www.oranocanada.com or follow us on LinkedIn, Facebook and Twitter:

@oranocanada

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 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 Project is the Russell Lake Uranium Project, in

which Skyharbour is the operator with joint-venture partner Rio Tinto. The project hosts several 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.

Skyharbour also has joint ventures with the 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; 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 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.

Forward-Looking Information

This news release contains “forward ‐looking information or statements” within the meaning of

applicable securities laws, which may include, without limitation, completing ongoing and planned

work on its projects including drilling and the expected timing of such work programs, other

statements relating to the technical, financial and business prospects of the Company, its projects

and other matters. All statements in this news release, other than statements of historical facts, that

address events or developments that the Company expects to occur, are forward -looking

statements. Although the Company believes the expectations expressed in such f orward-looking

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

performance and actual results may differ materially from those in the forward -looking statements.

Such statements and information are based on numerous assumptions regarding present and future

business strategies and the environment in which the Company will operate in the future, including

the price of uranium, the ability to achieve its goals, that general business and economic conditions

will not change in a material adverse manner, that financing will be available if and when needed

and on reasonable terms. Such forward -looking information reflects the Company’s views with

respect to future events and is subject to risks, uncertainties and assumptions, including the risks

and uncertainties relating to the interpretation of exploration results, risks related to the inherent

uncertainty of exploration and cost estimates and the potential for unexpected costs and expenses,

and those filed under the Co mpany’s profile on SEDAR+ at www.sedarplus.ca. Factors that could

cause actual results to differ materially from those in forward looking statements include, but are not

limited to, continued availability of capital and financing and general economic, market or business

conditions, adverse weather or c limate conditions, failure to obtain or maintain all necessary

government permits, approvals and authorizations, failure to obtain or maintain community

acceptance (including First Nations), decrease in the price of uranium and other metals, increase in

costs, litigation, and failure of counterparties to perform their contractual obligations. The Company

does not undertake to update forward‐looking statements or forward‐looking information, except as

required by law.