How Integra Is Integrating Tribal Partnerships Into Mine Development Execution

• Integra Resources granted US$1,500,000 in equity (517,103 shares at C$3.97) to the Shoshone-Paiute Tribes, following over 5 years of collaboration on the DeLamar Project in Idaho.
• The Company acquired a 6,600-acre ranch for US$12.5 million, providing backup water rights and wetland mitigation capacity to address potential operational disruptions.
• DeLamar's after-tax NPV5% stands at US$774 million (46% IRR) at base case metal prices, improving to US$1.9 billion (97% IRR) at current gold and silver prices.
• The Bureau of Land Management (BLM) anticipates issuing the Environmental Impact Statement (EIS) and record of decision in the third quarter of 2027, following a 15-month NEPA schedule under the FAST-41 framework.
• Integra holds US$105.8 million in cash following a US$61.6 million bought deal that attracted 12 new institutional investors after 300% to 400% share price appreciation.

Integra Resources Corp. (TSXV: ITR; NYSE American: ITRG) has entered into an equity agreement with the Shoshone-Paiute Tribes valued at US$1,500,000, representing a departure from conventional community engagement models in favour of structured economic participation tied to the advancement of the DeLamar Project in southwestern Idaho. The agreement, announced May 13, 2026, grants 517,103 common shares of the Company to the Shoshone-Paiute at C$3.97 per share, the closing price on the TSX Venture Exchange (TSXV) immediately before execution. The equity grant follows more than 5 years of collaboration between Integra and the Shoshone-Paiute, centred on baseline data collection, tribal monitoring, and mine plan co-development, with completion subject to customary closing conditions, including approval from the NYSE American.

President and Chief Executive Officer of Integra Resources, George Salamis, positioned the equity grant as reinforcing a partnership approach to project advancement:

"Integra views this as a further step in building a long-term partnership with the Shoshone-Paiute in relation to the DeLamar Project. The work we have done together to date has helped shape a Project that is better understood, more predictable, and better positioned to earn support locally and across the region by all stakeholders."

Partnership Framework Addresses Stewardship, Economics, & Governance

The equity agreement reflects a framework developed through more than 5 years of in-person engagement, site visits, consultation on mine design and baseline studies, and community meetings. The framework addresses mutual priorities: stewardship, economic participation, governance structures, and commitments extending through the life of the mine.

Chairman Brian Mason of the Shoshone-Paiute Tribes described the equity ownership as reflecting progress in building a relationship with Integra based on respect and transparency:

"Our Nation takes a generational view in evaluating opportunities to ensure they align with Shoshone-Paiute values, protect our cultural resources, and support lasting benefits for our people. Equity ownership reflects the progress we have made in building a relationship with Integra based on respect and transparency."

Strategic Land Acquisition Provides Operational Risk Mitigation

Integra acquired a 6,600-acre ranch property for US$12.5 million during the first quarter of 2026, positioned between the DeLamar deposit and planned heap leach operations. The property comes with senior water rights and mitigation opportunities for wetlands disturbance associated with mine development and operations.

Salamis framed the acquisition as a risk management measure against operational disruption:

"Fortuitously, there was a ranch that came up for sale, which bisects the project. It sits between the Delmare deposit itself and where we have proposed heat leach operations planned for development in another 2 years from now."

The ranch provides a backup water supply beyond the feasibility study's baseline assumption of 35,000 tonnes per day of heap leaching capacity. Management noted that 2 consecutive drought years would otherwise create a water supply shortfall at the operation, representing a potential loss of cash flow of US$200 million per year. The property also establishes Integra as a stakeholder within the ranching community of Owyhee County.

Project Economics & Federal Permitting Timeline

The DeLamar Project feasibility study, effective December 8, 2025, outlined a conventional open-pit oxide heap leach operation with after-tax net present value at a 5% discount rate (NPV5%) of approximately US$774 million and after-tax internal rate of return (IRR) of 46% at base case prices of US$3,000 per ounce gold and US$35 per ounce silver. At metal prices of US$4,500 per ounce gold and US$65 per ounce silver, after-tax NPV5% improves to approximately US$1.9 billion with an after-tax IRR of 97%. The project targets a total production of 1.1 million ounces of gold equivalent over a 10-year operating mine life, plus 2 years of residual leaching, at a co-product mine-site all-in sustaining cost (AISC) of US$1,480 per ounce gold equivalent.

Integra submitted Mine Plan of Operations Version 4.3 to the United States Bureau of Land Management (BLM) on May 1, 2026, forming the basis for environmental review under the National Environmental Policy Act (NEPA). The BLM anticipates issuing the Environmental Impact Statement (EIS) and record of decision in the third quarter of 2027. The DeLamar Project's permitting timeline, posted to the FAST-41 project dashboard on January 13, 2026, highlights an accelerated 15-month NEPA schedule.

Early Works Deployment & Stakeholder Engagement

Integra reported cash and cash equivalents of US$105.8 million as of March 31, 2026, benefiting from a US$61.6 million bought deal public offering completed during the quarter. Net proceeds of US$57.5 million are targeted for pre-production expenditures at DeLamar and funded the strategic land acquisition. Management characterised the financing as a risk mitigation decision relative to funding DeLamar's advancement entirely from Florida Canyon cash flow, noting that the financing attracted 12 new institutional investors following share price appreciation of 300% to 400% over the prior 2 years.

The Company invested US$17.7 million in mineral property, plant, and equipment at DeLamar during the first quarter of 2026, including US$3.4 million to Idaho Power for power infrastructure planning and the US$12.5 million land acquisition. An additional US$4.0 million in exploration and development expenses supported engineering and permitting work. External affairs activities during the first quarter of 2026 engaged over 4,250 stakeholders across Nevada, Idaho, and Oregon, including local residents, civic and non-profit organisations, government officials, and Tribal Nations, with targeted engagement informing mine planning and design addressing regenerative grazing, reclamation planning, visual effects, Indigenous knowledge, and cultural studies.

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