Hudbay Provides an Update on Manitoba Operations due to Wildfire Evacuation Order

Press Release

TORONTO, June 04, 2025 — Hudbay Minerals Inc. (“Hudbay” or the “Company”) (TSX, NYSE: HBM) continues to respond to the evolving wildfire situation in northern Manitoba and is working closely with local authorities to ensure its employees remain safe as well as comply with the regional wildfire evacuation orders for Snow Lake, Flin Flon and surrounding areas.

Hudbay’s news release dated May 29, 2025 outlined the Company’s response to fires near Flin Flon and plans to maintain operations in Snow Lake at temporarily reduced production levels. However, as the fires advance across the province, a precautionary early evacuation notice was issued yesterday for the town of Snow Lake. In response, Hudbay has enacted its emergency preparedness procedures and enabled a controlled, safe and orderly temporary suspension of operations in Snow Lake. This proactive measure positions Hudbay well for a safe return to full operations once conditions permit. Only essential Hudbay personnel, authorized by emergency services, will remain in Snow Lake to assist with emergency activities. The Company believes its infrastructure and facilities in Snow Lake and Flin Flon are well-protected from the wildfires and have a low risk of being damaged.

“The safety of our employees, their families, our First Nations partners and the communities we serve remains our top priority. With the wildfires spreading, Hudbay has taken additional actions to support our employees, including $1 million in direct financial support and establishing a Community Relief Donations Fund,” said Rob Carter, Hudbay’s Senior Vice President, Canada. “We are collaborating closely with local communities and municipal and provincial authorities to provide support during this challenging time. We will continue to monitor the situation, ensuring a safe return to full operations as soon as it is advisable.”

Given the strong year-to-date performance in Snow Lake, the Company still expects to achieve its annual guidance metrics for Manitoba in 2025. Hudbay’s exploration activities in the Flin Flon and Snow Lake regions also remain paused as fire mitigation efforts are underway.

Building on its commitment to support Manitoba and the communities near its operations, Hudbay is taking the following actions in response to the wildfire evacuation orders:

• An early commitment of $1 million in direct financial support for evacuated Hudbay employees.
• Establishing a Community Relief Donations Fund, where Hudbay will double the total amount donated by its employees across the company.
• Continue to support community and emergency response efforts.
• To aid firefighting efforts, Hudbay has deployed external firefighters to prepare for response activities.
• Executing safeguarding plans to protect Hudbay assets.
• Maintaining communication with the local communities and provincial authorities about the resources Hudbay has available to assist emergency response efforts, such as supplies, equipment and water trucks.

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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