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NCX.V ·

Northisle Announces C$100 Million Financing

Financings

Northisle Copper and Gold Inc. | 14th Floor – 1040 West Georgia St. | Vancouver, BC | V6E 4H1

www.northisle.ca | [email protected]

1414-0227-0488.2

February 26, 2026

TSX Venture Exchange Symbol: NCX

NORTHISLE ANNOUNCES C$100 MILLION FINANCING

NOT FOR DISTRIBUTION TO U.S. NEWSWIRE SERVICES OR FOR RELEASE, PUBLICATION, DISTRIBUTION OR

DISSEMINATION DIRECTLY OR INDIRECTLY, IN WHOLE OR IN PART, IN OR INTO THE UNITED STATES

The base shelf prospectus is accessible, and the shelf prospectus supplement will be accessible within two business days,

through SEDAR+.

Vancouver, B.C. – Northisle Copper and Gold Inc. (TSXV: NCX) (“Northisle” or the “Company”) is pleased to announce

that it has entered into an agreement with Paradigm Capital Inc. (“Paradigm”) as lead agent and sole bookrunner on

behalf of a syndicate of agents (collectively, the “Agents”), in connection with a ”best efforts” public offering (the

“Brokered Offering”) for total gross proceeds of up to approximately $100,000,350, consisting of up to 32,787,000

common shares of the Company (the “Common Shares”) at a price of $3.05 per Common Share (the “Issue Price”).

In addition, the Company has granted the Agents an option (the “Agents’ Option”) to sell up to 4,919,000 additional

Common Shares at the Issue Price for additional aggregate gross proceeds of up to $15,002,950, exercisable not later

than 48 hours prior to the Closing Date (as defined below). The term “Brokered Offering” includes the additional

Common Shares that may be issued on the exercise of the Agents’ Option, if any.

The Brokered Offering is anticipated to include participation from new and existing fundamental institutional investors

and existing cornerstone shareholders.

The net proceeds of the Offerings will be used by the Company for advancement of the Company’s projects and for

general corporate and working capital purposes.

Closing is expected to occur on or about March 6, 2026 or other such date as the Company and the Agents may agree

(the “Closing Date”). The Offerings will be subject to the receipt of all necessary regulatory approvals, including the

approval of the TSX Venture Exchange (the “TSXV”), and other customary closing conditions.

The Common Shares offered pursuant to the Brokered Offering will be offered in all the provinces and territories of

Canada, other than Quebec (the “Jurisdictions”), on a “best efforts” basis by way of a prospectus supplement to the

Company’s short form base shelf prospectus dated February 25, 2026 (the “Prospectus Supplement”). Access to the

Prospectus Supplement, the corresponding base shelf prospectus and any amendment to the documents is provided in

accordance with securities legislation relating to procedures for providing access to a shelf prospectus supplement, a

base shelf prospectus and any amendment to the documents. The base shelf prospectus is accessible, and the

Prospectus Supplement will be accessible within two business days, through SEDAR+ at www.sedarplus.com. The

Common Shares offered pursuant to the Brokered Offering may also be sold outside of Canada and in the United States

on a private placement basis pursuant to available exemptions in accordance with all applicable laws and provided that

no prospectus or registration statement filing or comparable obligation arises.

An electronic or paper copy of the shelf prospectus supplement, the corresponding base shelf prospectus and any

amendment to the documents may be obtained, without charge, from Paradigm Capital Inc. by email at

[email protected] by providing the contact with an email address or address, as applicable.

The Common Shares have not been, and will not be, registered under the Unites 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 without registration under the U.S. Securities Act and all applicable state securities laws or compliance with

requirements of an applicable exemption therefrom. This press release shall not constitute an offer to sell or the

Northisle Copper and Gold Inc. | 14th Floor – 1040 West Georgia St. | Vancouver, BC | V6E 4H1

www.northisle.ca | [email protected]

1414-0227-0488.2

#49402773.2

solicitation of an offer to buy Common Shares in the Unites States, nor shall there be any sale of these Common Shares

in any jurisdiction in which such offer, solicitation or sale would be unlawful.

About Northisle

Northisle Copper and Gold Inc. is a Vancouver-based company whose vision is to become Canada’s leading sustainable

mineral resource company for the future. Northisle, through its 100% owned subsidiary North Island Mining Corp.,

owns the North Island Project, which is one of the most promising copper and gold porphyry projects in Canada. The

North Island Project is located near Port Hardy, British Columbia on a more than 34,000-hectare block of mineral titles

100% owned by Northisle on a belt stretching 50 kilometres northwest from the now closed Island Copper Mine

operated by BHP Billiton. Since 2021, the Company has discovered two significant deposits, expanded resources,

demonstrated the economic potential of the project, and is now focused on the development of this compelling project

while exploring within this highly prospective land package.

Northisle respectfully acknowledges that our North Island Project is located within the territories of Quatsino First

Nation, Kwakiutl First Nation, and Tlatlasikwala First Nation. We are committed to collaborating with First Nations to

build authentic, mutually beneficial relationships.

For more information on Northisle please visit the Company’s website at www.northisle.ca.

On behalf of Northisle Copper and Gold Inc.

Nicholas Van Dyk, CFA

Chief Financial Officer

Tel: (604) 638-2515

Email: [email protected]

www.northisle.ca

This news release does not constitute an offer to sell or a solicitation of an offer to buy any of the securities in the

United States. The securities 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 state securities laws and may not be offered or sold within the United States

or to U.S. Persons unless registered under the U.S. Securities Act and applicable state securities laws or an exemption

from such registration is available.

Cautionary Statements regarding Forward-Looking Information

Certain information in this news release constitutes forward-looking statements under applicable securities law. Any statements that are

contained in this news release that are not statements of historical fact may be deemed to be forward-looking statements. Forward-looking

statements are often identified by terms such as “may”, “should”, “anticipate”, “expect”, “intend” and similar expressions. Forward-looking

statements in this news release include, but are not limited to, statements relating to the ability to complete the Offerings on the proposed terms

or at all, anticipated use of proceeds from the Offerings, the participation of certain insiders and others in the Offerings, and receipt of regulatory

approvals with respect to the Offerings as well as any other future plans, objectives or expectations of Northisle. Forward-looking statements

necessarily involve known and unknown risks, including, without limitation, Northisle’s ability to implement its business strategies; risks associated

with mineral exploration and production; risks associated with general economic conditions; adverse industry events; stakeholder engagement;

marketing and transportation costs; loss of markets; volatility of commodity prices; inability to access sufficient capital from internal and external

sources, and/or inability to access sufficient capital on favourable terms; industry and government regulation; changes in legislation, income tax

and regulatory matters; competition; currency and interest rate fluctuations; and other risks. Readers are cautioned that the foregoing list is not

exhaustive.

Readers are further cautioned not to place undue reliance on forward-looking statements as there can be no assurance that the plans, intentions,

or expectations upon which they are placed will occur. Such information, although considered reasonable by management at the time of

preparation, may prove to be incorrect and actual results may differ materially from those anticipated. Forward-looking statements contained in

this news release are expressly qualified by this cautionary statement.

Northisle Copper and Gold Inc. | 14th Floor – 1040 West Georgia St. | Vancouver, BC | V6E 4H1

www.northisle.ca | [email protected]

1414-0227-0488.2

#49402773.2

The forward-looking statements contained in this news release represent the expectations of management of Northisle as of the date of this news

release, and, accordingly, are subject to change after such date. Northisle does not undertake any obligation to update or revise any forward-

looking statements, whether as a result of new information, future events or otherwise, except as expressly required by applicable securities law.

Neither the TSXV nor its Regulation Services Provider (as that term is defined in the policies of the TSXV ) accepts responsibility for the adequacy or

accuracy of this news release.