Mr. George Salamis reports

INTEGRA PROVIDES 2025 GUIDANCE; FOCUSED ON CONSISTENT OPERATIONS AND CAPITAL INVESTMENT AT FLORIDA CANYON AND SIGNIFICANT ADVANCEMENT OF DEVELOPMENT PROJECTS

Integra Resources Corp. has provided its 2025 guidance, which contains an outlook for production, operating costs, sustaining and growth capital, and development spending across the company's portfolio (all amounts in U.S. dollars unless otherwise stated).

George Salamis, president, chief executive officer and a director of Integra, commented: "When Integra acquired the Florida Canyon mine in late 2024, the primary goal was to secure a consistent and reliable source of cash flow that would allow the company to advance its flagship development-stage projects, DeLamar and Nevada North, and remove the need for annual equity financing. Florida Canyon has successfully delivered on this objective. In the current gold price environment, Florida Canyon is generating greater-than-expected cash flow, which has significantly improved the company's financial position and ability to execute its strategy.

"As anticipated, Florida Canyon will see significant reinvestment during the remaining quarters of 2025 and into 2026 across several ongoing initiatives to support a profitable mining operation for many years to come. The next 18 months represent a capital-intensive phase of the long-term continuous improvement plan for Florida Canyon. Major investments are under way in key areas, including a heap-leach-pad expansion, increased capitalized waste stripping, a revitalized mobile equipment fleet, process optimization and enhanced mine planning. The goal is to sustain and grow Florida Canyon, extend its mine life, and address historical underinvestment. Integra is laying the foundation for a more efficient, longer-lived operation with an improved cost profile in the years ahead. The company's ongoing work at Florida Canyon will be incorporated into a new NI [National Instrument] 43-101 technical report, expected to be published in the first half of 2026, in which Integra aims to highlight the improvements which can be made to this cornerstone asset.

"Florida Canyon's ability to generate cash flow has allowed the company to expedite and bolster initiatives at the DeLamar project relating to the ongoing feasibility study and permitting efforts -- with the expected commencement of federal mine permitting in the second half of 2025. The company's enhanced financial strength has also allowed for an increased budget for the Nevada North project to complete crucial test work to support future economic studies and permitting efforts. Integra is well positioned to deliver on its goals of profitability and project advancement while progressing its long-term vision of building a U.S.-focused intermediate gold producer."

2025 production, cost and growth outlook -- Florida Canyon mine

Gold production from the Florida Canyon mine is expected to be 70,000 to 75,000 ounces in 2025. The company is planning to mine approximately 13.5 million tonnes of ore and 11.2 million tonnes of waste for a total of 24.7 million tonnes, resulting in a strip ratio of 0.83. The increased strip ratio in 2025 is a result of catching up on stripping postponed by previous owners as well as additional stripping required to access new areas for mining.

Cash costs at Florida Canyon are expected to range from $1,800 to $1,900 per ounce of gold sold, including royalties. Integra has numerous continuing optimization studies at Florida Canyon focused on identifying areas for increased efficiency and cost reduction.

Sustaining capital expenditures of $48-million to $53-million are focused on capitalized waste stripping, mobile fleet rebuild and replacement financing, heap-leach-pad expansion, and other sustaining items. Sustaining capital expenditure is weighted more heavily toward the third quarter of 2025, with work beginning for the heap-leach-pad expansion and fleet refurbishment. Approximately 45 per cent of the annual sustaining capital is expected to be deployed in the third quarter of the year, which will result in an elevated mine-site all-in sustaining cost during this period.

Mine-site all-in sustaining costs at Florida Canyon are expected to range from $2,450 to $2,550 per ounce of gold sold, which reflects the capital-intensive period at Florida Canyon expected in 2025 and 2026. The increase to the mine-site all-in sustaining cost guidance range in 2025 versus actual first quarter costs is primarily a result of timing of sustaining capital expenditures.

Growth capital between $8-million and $10-million at Florida Canyon will be deployed on expansion projects and various studies, including drill testing oxide targets, mobile equipment financing to grow the fleet, engineering studies on potential steepening of pit wall slopes, and the possibility of increasing run-of-mine gold-mineralized material to the heap-leach pad. At Florida Canyon, approximately $1.5-million has been allocated to support the 2025 growth drilling program, consisting of approximately 10,000 metres of reverse circulation drilling focused on near-mine targets designed to support oxide mineral reserve and resource growth and mine life extension. Drilling commenced in early May and is expected to conclude in the third quarter of 2025, with initial assay results expected to be released during the summer months of 2025. The drill program is expected to support a mineral resource and reserve update and a revised life-of-mine plan in 2026.

2025 development outlook -- the DeLamar project and the Nevada North project

Integra remains 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. The total expected project development spending in 2025 is $14.5-million to $15.5-million.

At DeLamar, efforts in 2025 will be focused on the completion of the feasibility study and permit advancement. A total of $12-million to $12.5-million has been allocated to advancing DeLamar in 2025. Approximately 15 per cent of the anticipated budget at DeLamar is allocated to advanced engineering studies that will support the coming feasibility study, which is expected to be delivered later in 2025. Approximately 40 per cent of the budget for DeLamar will directly support permitting activities. In March, 2025, Integra submitted the mine plan of operations (MPO) for DeLamar to the U.S. Bureau of Land Management (BLM). The submission of the updated MPO to the BLM initiates the pathway for the issuance of a notice of intent (NOI), which is a formal announcement of the BLM's intent to prepare an environmental impact statement (EIS) to evaluate the potential environmental effects of the proposed action in accordance with the National Environmental Policy Act (NEPA).

Nevada North consists of two mineral exploration deposits, the Wildcat deposit and the Mountain View deposit. At Nevada North, the company has allocated approximately $2.5-million to $3-million to execute several initiatives focused on continued project advancement and derisking. The company anticipates completing a metallurgical test work program at Wildcat and commencing a geochemical sampling program designed to assess future development criteria for mineralized oxide material and waste rock in the second half of 2025. Metallurgical and geochemical testing is being completed to support future economic studies and permitting efforts at Nevada North. These initiatives contribute to Integra's long-term growth strategy, which involves the derisking and permitting of its key development-stage heap-leach projects to build a leading U.S.-focused intermediate gold producer.

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 mergers and acquisitions while upholding the highest industry standards for environmental, social and governance practices.

Qualified person

The scientific and technical information contained in this news release has been reviewed and approved by Gregory Robinson, PE, SME registered member, Integra's general manager of the Florida Canyon mine. Mr. Robinson is a qualified person as defined in NI 43-101, Standards of Disclosure for Mineral Projects.

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