Hudbay Minerals (HBM) Registration filing summary

Company overview and business model

• Operates as a copper-focused critical minerals company with long-life mines in Canada, Peru, and the US, producing copper, gold, zinc, silver, and molybdenum.

• Growth pipeline includes major projects in Arizona, Nevada, and Peru, plus regional expansion and exploration opportunities.

• Owns and operates multiple processing facilities in Canada and Peru, supporting integrated mining operations.

Financial performance and metrics

• Financial statements are prepared in accordance with IFRS and are incorporated by reference, including annual and interim results for 2024, 2025, and Q1 2026.

• As of May 14, 2026, 397,261,939 common shares were outstanding.

• Qualifies as a well-known seasoned issuer with qualifying public equity of approximately C$13.25 billion (US$9.65 billion).

Use of proceeds and capital allocation

• Proceeds from securities issuances will be used to provide flexibility in managing capital and meeting funding requirements, with specific uses detailed in future prospectus supplements.

• Management has broad discretion over the application of net proceeds, which may not always enhance shareholder value.