NEWMONT Corp /DE/

Initial Development Establishes Foundation for Potential 70-Year Gold-Copper Operation

The Red Chris Block Cave project is a rare, large-scale multi-decade gold-copper opportunity located in the Golden Triangle of British Columbia, Canada. The brownfield extension project is designed to mine the porphyry gold-copper system beneath the existing open pit and includes an underground block cave mine, expansion of existing processing facilities to 15 million tonnes per year, and upgrades to site infrastructure unlocking higher-grade mineralization at depth. Newmont has a 70 percent ownership interest in Red Chris and is advancing the project with the partnership and support of Imperial Metals, its joint venture partner. The feasibility study is nearing completion, subject to review and governance oversight, with a full-funds investment decision now expected in early 2027.

As the feasibility study nears completion, the project has already achieved several key milestones, including the receipt of amended regulatory approvals from the Province of British Columbia in June 2026 that enable the transition from open pit mining to block caving. The amended Environmental Assessment Certificate was achieved through a consent-based process with the Tahltan Nation, reflecting a shared commitment to responsible resource development, meaningful Indigenous participation and long-term benefits for local communities.

The Golden Triangle has been prioritized by both the Provincial Government of British Columbia and the Federal Government of Canada as a region of national importance. Critical minerals, Indigenous partnerships, clean energy infrastructure, and Northwest B.C. economic development have been identified as strategic priorities, resulting in enhanced policy support, regulatory attention, and infrastructure investment in the region. In July 2026, the Government of Canada announced a CAD$500 million contribution to support the project, reinforcing Red Chris as a nationally significant critical minerals project. The Red Chris Joint Venture is continuing to work with the Government of Canada to finalize the terms of the grant and expects to reach an agreement in the coming months.

1 Please refer to the cautionary statement and footnotes for further information regarding forward-looking statements.

2 Newmont owns 70% of the Red Chris Joint Venture, operates the project, and proportionally consolidates the project into its financial statements. Imperial Metals (TSX:III) owns 30% of the Red Chris Joint Venture. The feasibility study and a full-funds investment decision require approval of the Board of Directors of the Red Chris Joint Venture.

NEWMONT THIRD QUARTER 2026 RESULTS | NEWS RELEASE 7

The project is expected to benefit from several strategic advantages, including:

•Development in a leading, stable mining jurisdiction

•Expected to deliver double-digit IRR and aligns with Newmont's investment evaluation criteria 5

•Expected to be one of Newmont's lowest cost operations over life-of-mine

•Tahltan Nation consent, the amended B.C. Environmental Assessment Certificate and major mine permits support the project’s regulatory and social foundations

•Existing mature operation, including processing facilities, tailings infrastructure, road access, camp facilities and site services

•Access to established port at Stewart, B.C. for exports and delivery of project materials

•Reliable access to clean, hydroelectric power supplied by B.C. Hydro, the provincial electricity utility

•Knowledge of the Red Chris orebody and mineralogy from current operations

•Newmont's global block cave expertise, including experience at Cadia

•Growth opportunities beyond the project, including additional macro blocks, East Ridge Resources and other deposits in the Golden Triangle District