Integra Resources Corp. (TSX-V: ITR) (NYSE: ITRG) is pleased to announce that the Company has entered into a Relationship Agreement with the Shoshone-Paiute Tribes of the Duck Valley Indian Reservation whose aboriginal territories cover much of the tri-state area of Idaho, Nevada, and Oregon. This groundbreaking Agreement between the Shoshone-Paiute and Integra establishes a transformative and long-term partnership for the development of the DeLamar gold and silver mining project on Shoshone-Paiute Traditional Homelands. This Agreement is unprecedented in the Lower 48 States, in both recognizing Tribal sovereignty and collaboratively advancing sustainable, long-term economic development for a project located on federally managed lands.

The Agreement announced today is the result of five years of collaboration between the Shoshone-Paiute and Integra and will serve to guide the partnership throughout the entire life of mine for the DeLamar Project in southwest Idaho. The Agreement provides a framework to foster collaboration and co-management of various aspects related to the DeLamar Project, including:

• Indigenous recognition;
• Economic empowerment and participation;
• Cultural and environmental protection;
• Consensus-based regulatory collaboration; and
• Community investment and performance monitoring.

Brian Mason, Chairman of the Shoshone-Paiute Tribes, commented: “The Shoshone-Paiute Business Council is very pleased to enter into this Relationship Agreement for the DeLamar Project, located in the northern portion of Shoshone-Paiute traditional territory. The Agreement is the first-of-its-kind in the Lower 48 States, and something that Tribal Nations surrounded by the mining industry have been working towards for many years. We are excited to start the work to implement the Agreement immediately, collaborating in partnership with Integra to develop plans that will put the benefits of the future mine to work for the long-term vision of the Tribe, and to accountably manage potential impacts. This Agreement asserts our right to a seat at the table to help direct how things happen in our territory. It supports the Shoshone-Paiute to be a driver of responsible economic development in the region, providing for our people and our neighbors, and protecting our values, interests, and culture.”

George Salamis, President, CEO, and Director of Integra, commented: “Integra is incredibly proud to enter into this partnership with the Shoshone-Paiute Tribes, as we work hard to build long-lasting, respectful, trusting and collaborative relationships that drive tangible value. Through this partnership we are establishing durable and long-term predictability, while providing the foundational platform for local and regional economic opportunities to thrive. Over the past five years, Integra and the Shoshone-Paiute have worked together to build an understanding of our respective identities, values, rights and interests. We are incredibly honored to be partners with the Shoshone-Paiute, and together establish this first-of-its-kind agreement which will enable us to create sustainable value for our shareholders and communities through responsible mining practices.”

Rep. Russ Fulcher (R-ID-01), commented: “Idaho has been blessed with the vast natural resources we need to be self-sufficient and prosperous. Today’s Relationship Agreement marks a significant milestone for economic development and the responsible advancement of natural resource production in Owyhee County. I’m proud to support this agreement, which will provide high-wage job opportunities in our rural Idaho communities.”

Senator Mike Crapo (R-ID), commented: “The signing of today’s Relationship Agreement between Integra and the Shoshone-Paiute represents a collaborative commitment to responsibly advancing natural resource development in Idaho and supporting the creation of high-paying, quality jobs for generations to come. This move will help foster a more secure and efficient domestic mineral supply chain as America strives for increased energy and technology independence.”

Senator Jim Risch (R-ID), commented: “This historic Agreement is a great example of the innovative collaboration we value in Idaho. The DeLamar Project will support domestic production of the resources we use every day, and create high-paying jobs and workforce development opportunities for Idahoans.”

Background on The DeLamar Project and the Relationship Agreement

The DeLamar Project is a gold and silver mining development project located in Owyhee County in southwest Idaho. The Project is comprised of the historic DeLamar and adjacent Florida Mountain Deposits, which were in production under Kinross Gold Corporation up until 1998. Integra is seeking to revitalize DeLamar, having invested approximately US$140 million into advancing resource growth, engineering and mine design, and significant environmental baseline work since Integra acquired the Project in 2017. In March 2025, Integra submitted the Mine Plan of Operations for DeLamar to the United States Bureau of Land Management. The submission of the updated Mine Plan of Operations to the BLM initiates the pathway for the issuance of a Notice of Intent, which is a formal announcement of the BLM’s intent to prepare an Environmental Impact Statement to evaluate the potential environmental effects of the proposed action in accordance with the National Environmental Policy Act.

The Agreement provides Integra and the Shoshone-Paiute Tribes a framework to guide a mutually beneficial long-term relationship over the life of mine at DeLamar. The Agreement lays the foundation for a strong partnership by aligning the Parties’ interests across several key measures, including economic opportunities, environmental protection, cultural recognition, and social performance. This approach seeks to achieve consensus between the Parties over the life of mine by working together to co-design how Integra operates and remains accountable on performance.

As the footprint of the proposed DeLamar Project is within the traditional territories of other Tribal Nations, Integra and those interested Nations are concurrently working to explore the development of similar relationships.

About Integra

Integra is a growing precious metals producer in the Great Basin of the Western United States. Integra is focused on demonstrating profitability and operational excellence at its principal operating asset, the Florida Canyon Mine, located in Nevada. In addition, Integra is committed to advancing its flagship development-stage heap leach projects: the past producing DeLamar Project located in southwestern Idaho and the Nevada North Project located in western Nevada. Integra creates sustainable value for shareholders, stakeholders, and local communities through successful mining operations, efficient project development, disciplined capital allocation, and strategic M&A, while upholding the highest industry standards for environmental, social, and governance practices.

About the Shoshone-Paiute Tribes

The Shoshone-Paiute Tribes is a federally-recognized Tribal Nation located on the state line of Idaho and Nevada within the homelands of their ancestors. Established in 1877, the Shoshone-Paiute Tribes are a collective of numerous bands of Shoshone and Paiute people from throughout the northern Great Basin and Interior Western United States. Being a rural community, the Tribes have embraced tying cultural heritage with a western ranching lifestyle. As a Nation, the Shoshone-Paiute Tribes have been expanding economic opportunities and building up community development for generations to come.