Hudbay Minerals Inc.

Hudbay is a copper-focused critical minerals company with three long-life operations and a pipeline of copper growth projects in Tier 1 mining jurisdictions (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). 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 our existing operations.

Since the start of the company in 1927, Hudbay has worked toward the goal of translating responsible mining into positively impacting people’s lives, local communities and broader regional economies. Today, the company continues to be guided by its experience in building strong relationships and making a valuable contribution wherever it operates. The company is further guided by our values of dignity and respect, caring, 0penness, and trustworthiness

This report provides internally assessed TSM performance results for our British Columbia Business Unit (BCBU) and externally verified results for the Manitoba Business Unit (MBU) and the South American Business Unit (SABU).

Hudbay’s current performance and changes from its previous assessment are summarized as follows:

Two out of three operations have achieved level AA in tailings management. The other maintained their A level performance. In all cases, efforts to also include effectiveness in future tailings audits are planned.

Health and safety management continues to be a strength across the organization, with AA attained at the BCBU and AAA for both the MBU and the SABU.

Results for all remaining protocols were maintained at a minimum of level A.

Hudbay plans to maintain a strong focus on tailings and health and safety management, to continue to take action to support its climate change initiatives, and to continue to assess and address any gaps regarding the new equitable, diverse and inclusive workplace and the revised safe, healthy and respectful workplaces protocols.

Several case studies highlighting Hudbay’s activity related to the TSM protocol subjects can be found in the annual sustainability reports which are available on the company’s website.

For more information, please visit: www.hudbayminerals.com