Mr. George Salamis reports

INTEGRA FILES FEASIBILITY STUDY AND UPDATED LIFE OF MINE PLAN TECHNICAL REPORT FOR THE PRODUCING FLORIDA CANYON MINE

Integra Resources Corp., further to its news release dated June 25, 2026, has filed a feasibility study technical report and updated life-of-mine plan for the operating Florida Canyon mine, located in Pershing county, Nevada.

The technical report was prepared in accordance with National Instrument 43-101, Standards of Disclosure for Mineral Projects, with Global Resource Engineering Ltd. acting as lead author and consultant. The technical report, entitled "NI 43-101 Technical Report, Florida Canyon Gold Mine, Pershing County, Nevada, USA," dated July 28, 2026, with an effective date of May 31, 2026, has been filed under the company's profile on SEDAR+ and on EDGAR. The technical report is also available on the company's website.

Florida Canyon technical report overview (all amounts in United States dollars unless otherwise stated)

The updated technical report was informed by nearly two years of operating experience and a comprehensive review of the mine's historical performance and cost structure. Together, these efforts have resulted in a materially enhanced operation with a more stable, predictable and executable mine plan. The technical report highlights a 74-per-cent increase in proven and probable mineral reserves to 1.19 million ounces of gold (1), an eight-year operating mine life and a 17-per-cent increase in average annual gold production to approximately 82,000 ounces during active mining (excluding two years of residual leaching beginning in 2033).

The updated technical report also outlines approximately 685,000 ounces of life-of-mine gold sold, approximately $800-million of after-tax free cash flow (2) and a base case after-tax net present value (NPV) (5 per cent) of $601-million (3). Site-level all-in sustaining costs (AISC) (2) are expected to average approximately $2,331 per ounce, reflecting a larger, longer-life operation with higher annual production, lower long-term operating costs and stronger cash flow generation. The enhanced mine plan is expected to generate significant cash flow that will support the advancement of the DeLamar and Nevada North projects.

Refer to the 2026 technical report feasibility study and life-of-mine Plan news release from June 25, 2026, located on the company's website.

(1) Please see notes for mineral reserve estimate on the company's website.

(2) This is a non-GAAP (generally accepted accounting principles) financial measure.

(3) NPV discounted to Jan. 1, 2026, and includes cash flows from Jan. 1, 2026, to May 31, 2026. Base case gold prices: 2026 -- $4,344 per ounce (oz); 2027 -- $4,414 per oz; 2028 -- $4,169 per oz; 2029 -- $3,824 per oz; and 2030 to 2035 -- $3,600 per oz.

About Integra Resources Corp.

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 merger and acquisition (M&A), while upholding the highest industry standards for environmental, social and governance practices.

Qualified persons

The scientific and technical information contained in this news release has been reviewed and approved by James Frost, PEng, director, technical services of Integra Resources, who is a qualified person as defined by National Instrument 43-101.

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