Hudbay Resumes Snow Lake Operations after Wildfire Evacuation

Press Release

TORONTO, Aug. 27, 2025 Hudbay Minerals Inc. (“Hudbay” or the “Company”) (TSX, NYSE: HBM) is pleased to announce it has resumed operations in Snow Lake following the decision by the Manitoba Wildfire Service and the Town of Snow Lake to lift the mandatory evacuation order, effective August 22, 2025.

“The emergency preparedness and extensive community response efforts were successful in safeguarding Hudbay’s surface infrastructure and facilities in Manitoba during the wildfires. Thank you to the essential personnel who remained behind, our employees who were part of the volunteer firefighting efforts, and all the first responders who have been working tirelessly these last few months,” said John O’Shaughnessy, Vice President of Hudbay’s Manitoba Business Unit. “We expect a safe return to full operations, and we will continue to work with local and provincial authorities to ensure continued rebuilding of our communities after this difficult wildfire season.”

Hudbay’s comprehensive restart plan has been implemented with a focus on the safety of the Company’s employees and the integrity of Hudbay’s assets. There has been no structural damage to Hudbay’s onsite surface infrastructure and facilities in Snow Lake. Since the evacuation order lifted, the team has completed infrastructure safety review including inspection of the shaft and restart of the underground electrical infrastructure.

Milling activities at the New Britannia mill resumed on August 26 and the full mining workforce at Lalor has returned as of today, August 27. The entire Snow Lake operation is expected to reach full production levels by early September and the Company continues to expect to achieve its 2025 annual guidance metrics in Manitoba despite the wildfire impacts.

About Hudbay

Hudbay (TSX, NYSE: HBM) is a copper-focused critical minerals mining company with three long-life operations and a world-class pipeline of copper growth projects in tier-one mining jurisdictions of Canada, Peru and the United States.

Hudbay’s operating portfolio includes the Constancia mine in Cusco (Peru), the Snow Lake operations in Manitoba (Canada) and the Copper Mountain mine in British Columbia (Canada). Copper is the primary metal produced by the company, which is complemented by meaningful gold production and by-product zinc, silver and molybdenum. Hudbay’s growth pipeline includes the Copper World project in Arizona (United States), the Mason project in Nevada (United States), the Llaguen project in La Libertad (Peru) and several expansion and exploration opportunities near its existing operations.

The value Hudbay creates and the impact it has is embodied in its purpose statement: “We care about our people, our communities and our planet. Hudbay provides the metals the world needs. We work sustainably, transform lives and create better futures for communities.” Hudbay’s mission is to create sustainable value and strong returns by leveraging its core strengths in community relations, focused exploration, mine development and efficient operations.

For further information, please contact:

Candace Brûlé
Vice President, Investor Relations, Financial Analysis and External Communications
(416) 814-4387
investor.relations@hudbay.com

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