Northisle names board and advisory team additions

Northisle Copper and Gold Inc. (TSX-V: NCX, OTCQX: NTCPF) (“Northisle” or the “Company”) is pleased to announce several additions to its Board of Directors and advisory team, including:

Gerardo Fernandez – Director

Dr. Gillian Davidson – Strategic Advisor

Maurice Tagami – Process Design and Metallurgical Advisor

Alex Davidson, Chairman, commented

“I am excited to welcome Gerardo Fernandez, Gillian Davidson, and Maurice Tagami to the Northisle team. Gerardo is a highly experienced executive with a track record of successful execution across both corporate and operational roles in the mining sector. He will bring valuable insight to the Board as we continue to advance Northisle’s dual focus on value through project development and growth through exploration. Gillian brings more than 25 years of experience in sustainability and will be an invaluable resource to our team as we advance the North Island Project through the permitting process in BC, while maintaining our focus on building meaningful, long-term relationships with First Nations and local communities. Maurice has over 40 years of experience in mining and mineral processing and we are privileged to be able to draw on his expertise as we continue to further optimize and de-risk the North Island process design.”

Alex Davidson continued

“Northisle continues to attract exceptional talent. The strength and breadth of our team is a testament to the quality of our project and positions the Company to continue its track record of execution as we advance our North Island Project.”

Gerardo Fernandez

is currently the Chief Development Officer of Allied Gold Corporation and serves on the Board of Directors of Silver Mountain Resources Inc. Mr. Fernandez was previously Senior Vice President, Corporate Development of Yamana, having worked in several leadership positions in operations, strategic planning, and project development. Mr. Fernandez holds a Masters of Business Administration (Nevada, USA), degrees in Civil Mining Engineering, and a BSc. Engineering from the University of Chile.

Dr. Gillian Davidson

has over 25 years of experience as an internal and external advisor regarding sustainability, ESG, and responsible supply chains. Dr. Davidson was the Head of Mining and Metals for the World Economic Forum from 2014 to 2017, where she led global and regional engagement and multi-stakeholder initiatives to advance responsible and sustainable mining. From 2008 to 2014, she was Director of Social Responsibility at Teck Resources Limited and previously held senior roles related to community development, environment, and natural resources as a consultant and in government. Dr. Davidson has an Honours Master of Arts in Geography from the University of Glasgow, a PhD in Development Economics and Geography from the University of Liverpool, and is an alumna of the Governor General of Canada's Leadership Conference. Dr. Davidson is the chair of Global Battery Alliance and serves on the Board of Directors of Lundin Gold Inc. She was a former non-executive director of New Gold Inc. until its acquisition in 2026.

Maurice Tagami

has over 40 years of experience in mining and mineral processing. Mr. Tagami holds a degree in Metallurgical Engineering from the University of British Columbia and is a Professional Engineer with APEGBC and a Fellow of the Canadian Institute of Mining. During his career, Maurice has had extensive mining operations, engineering and design, start-up and commissioning, project development, project management, and strategic planning experience. Maurice is a proven Independent Board Director of publicly traded companies with a strong background and experience in technical matters, corporate governance, ESG, and financial oversight, driving organizational growth through innovative strategies and effective leadership. Mr. Tagami currently serves on the Board of Directors of Freegold Limited.

Issuance of Share-based Compensation

Northisle also announces that the Company’s Board of Directors has approved the issuance of 212,300 stock options (the “Options”) pursuant to the Company’s incentive stock option plan (the “Stock Option Plan”). The Options provide for the purchase of an aggregate of 212,300 common shares of the Company (the “Common Shares”) at an exercise price of $4.28 per share, which is the closing price for the Common Shares on the TSX Venture Exchange as of August 24, 2026. All of the Options have a 5-year term. 30,000 Options have a vesting schedule of 50% on grant and 50% on the one-year anniversary, while the balance vest one third per year commencing on August 24, 2027.

The Board of Directors has also approved the issuance of 26,700 Deferred Share Units (the “DSUs”) to Eligible Directors, pursuant to the Company’s Share Unit Plan (the “Share Unit Plan”). The DSUs will vest on August 24, 2027.

Further terms of the Options and DSUs can be found in the Stock Option Plan and Share Unit Plan as filed on SEDAR+.

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 potential of the North Island 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

.

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: plans and expectations regarding future project development and permitting; planned activities, including further exploration at the North Island Project and the North Island Pre-feasibility Study; the timing, completion and results of the Pre-feasibility Study; and, the Company’s plans for advancement of the North Island Project. Forward-looking statements necessarily involve known and unknown risks, including, without limitation, the Company’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.

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 TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this news release.

View source version on businesswire.com:

https://www.businesswire.com/news/home/20260825177388/en/

On behalf of Northisle Copper and Gold Inc.

Nicholas Van Dyk, CFA

Chief Financial Officer

Tel: (604) 638-2515

Email:

info@northisle.ca

www.northisle.ca

Business Wire

August 25, 2026 - 3:57 AM PDT

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