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SYH.V ·

Skyharbour Consolidates 100% Interest in the Russell Lake Uranium Project

Corporate Updates

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

November 16th, 2025.

NEWS RELEASE

Skyharbour Consolidates 100% Interest in the Russell Lake Uranium Project

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

SC1P) (“Skyharbour” or the “Company”) is pleased to announce that is has entered into a

definitive and binding purchase agreement (the “Purchase Agreement”) with Rio Tinto Exploration

Canada Inc. (“RTEC”) to increase and consolidate its ownership interest in the Russell Lake

Uranium Project (“Russell Lake” or the “Project”) through the acquisition of RTEC’s minority

interest in the Project (the “Transaction”) . The Project is strategically located in the central core

of the Eastern Athabasca Basin of northern Saskatchewan, with access to regional infrastructure,

including an all-weather road and powerline.

Russell Lake Project Location Map:

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

Transaction Details:

Immediately prior to closing, RTEC’s interest in the Project will be approximately 42.3%. Pursuant

to the terms of the Purchase Agreement , Skyharbour has agreed to acquire 100% of RTEC’s

minority interest in the Project in exchange for cash consideration of C$10 million (the “Purchase

Price”). The Purchase Price shall consist of a C$2 million deposit payable within five business

days of the date of execution of the Purchase Agreement (the “Deposit”) and a C$8 million cash

payment at closing (the “Closing Payment”), which is expected to be on or before December 21st,

2025.

Skyharbour shall grant to RTEC a 0.25% net smelter returns royalty over Russell Lake. The

acquisition of RTEC’s interest in Russell Lake will increase Skyharbour’s interest in the Project to

100%, subject to several other net smelter return royalties held by third parties.

Russell Lake Uranium Project Overview:

The Russell Lake Project is a large, advanced-stage uranium exploration property totalling 73,314

hectares strategically located between Cameco’s Key Lake and McArthur River Projects , and

adjoining Denison’s Wheeler River Project to the west and Skyharbour’s Moore Uranium Project

to the east. The northern extension of Highway 914 between Key Lake and McArthur River runs

through the western extent of the property and greatly enhances accessibility, while a high-voltage

powerline is situated alongside this road. Skyharbour’s acquisition of a majority interest in Russell

Lake creates a large, nearly conti guous block of highly prospective uranium claims totalling

109,019 hectares between the Russell Lake and the Moore uranium projects. Several notable

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exploration targets exist on Russell, including the Grayling Zone, the M-Zone Extension target,

the Little Man Lake target, the Christie Lake target, the Fox Lake Trail target and the newly

identified Fork Zone target. More than 35 kilometres of largely untested prospective conductors

in areas of low magnetic intensity also exist on the Property. Skyharbour is the operator and owns

a majority interest in Russell Lake, having formed a joint venture partnership with RTEC at the

project.

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 of Exploration 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 -seven projects covering over 616,000 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, which 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 Skyharbou r, 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://skyharbourltd.com/_resources/news/SKY_SaskProject_Locator_2025_07_16_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”

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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.

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 forwa rd-looking statements,

including receipt of TSXV approval to the Transaction and the closing of the Transaction. 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, exploration and

development successes, regulatory approvals including TSXV approval, and general economic,

market or business conditions. Please see the public filings of the Company at www.sedarplus.ca

for further information.