Hudbay Minerals (HBM) investor relations material

Deal rationale and strategic fit

• Acquisition creates the third largest copper district in North America, consolidating two major Arizona projects and establishing a major copper hub that enhances exposure to copper growth opportunities and strengthens the U.S. critical minerals supply chain.

• Strengthens position as a leading Americas-focused copper producer with a robust pipeline of long-life, low-cost assets in tier-one jurisdictions.

• Provides Arizona Sonoran shareholders with a significant premium and participation in a diversified, well-capitalized copper growth platform.

• Offers a clear path to scale annual copper production from approximately 125,000 tonnes to over 250,000 tonnes by 2030, with potential to exceed 350,000 tonnes.

• Both boards unanimously approved the deal, with positive executive statements and closure expected in Q2 2026.

Financial terms and conditions

• Arizona Sonoran shareholders receive 0.242 Hudbay shares per share, implying C$9.35 per share and a 30% premium to the last closing price.

• Equity value of the transaction is approximately US$1,480 million, with an enterprise value of US$1,278 million after accounting for Hudbay's existing stake.

• Post-transaction, Hudbay and Arizona Sonoran shareholders will own approximately 89% and 11% of the combined entity, respectively.

• Includes customary deal protections, non-solicitation, right to match superior proposals, and a termination fee.

• Transaction expected to close in Q2 2026, subject to regulatory, court, and stock exchange approvals.

Synergies and expected cost savings

• Creation of an Arizona operating hub enables shared technical and support functions, leveraging skilled teams and shared infrastructure from both companies.

• Regional purchasing power, tax efficiencies, and pooling tax losses expected to drive further savings.

• Estimated US$5–10 million in annual corporate synergies through reduced G&A and enhanced commercial terms.

• Stable sulfuric acid supply from Copper World’s Albion plant will lower Cactus’s reagent costs.

• Centralized Arizona head office and redeployment of construction teams for cost reduction and operational efficiency.