Integra Resources Corp. (TSX-V: ITR) (NYSE: ITRG) is pleased to provide an interim operational update for the third quarter ended September 30, 2025 (the “third quarter 2025” or “Q3 2025”). The Company plans to release its third quarter 2025 financial results after market close on Wednesday, November 12, 2025.

(All amounts in United States dollars as at September 30, 2025, unless otherwise stated)

George Salamis, President, CEO and Director of Integra commented: “Florida Canyon continues to deliver on expectations, generating meaningful cash flow to fund crucial reinvestment into the mine, while also supporting the Company’s broader growth strategy. During the quarter, significant capital was deployed at Florida Canyon in the areas of capitalized stripping, mining equipment enhancements, and leach pad expansion. Excellent production results from Florida Canyon combined with the strong gold price environment have allowed Integra to significantly increase its quarter-over-quarter cash balance to ~$81 million, marking the Company’s strongest ever financial position.”

Third Quarter 2025 Florida Canyon Mine Operational Update

The Florida Canyon Mine produced 20,653 ounces of gold and sold 20,265 ounces of gold during the third quarter 2025, which is in-line with the Company’s expectations. Strong gold production continues to be supported by the recovery of gold ounces recently placed on the Phase IIIa heap leach pad and by residual ounces recovered from Phases I and II leach pads. Gold production levels were further supported by increased solution flow rates through the leach pads and the new carbon-in-column circuit commissioned late in 2024. The Company expects to meet its gold production guidance for 2025.

The increased strip ratio at Florida Canyon during the third quarter 2025 is a result of the Company’s stated commitment of reinvestment through increased capitalized waste stripping and ramping up new mining areas. Waste movement also increased during the third quarter 2025 due to a provisional adjustment of the mine sequence to overcome dust suppression challenges caused by a temporary water shortage in the dry summer months. The temporary water shortage was caused by a problematic historic water well, which has since been successfully replaced.

During the third quarter 2025, construction of the Phase IIIb heap leach pad at Florida Canyon continued with commissioning expected in the fourth quarter 2025. Florida Canyon is also currently undergoing a revitalization of its mining fleet. As part of this effort, refurbishment is underway on haul trucks and loaders currently on site and orders have been placed for several new key pieces of equipment, including eight new 150 ton Caterpillar haul trucks, a new Caterpillar loader, and a new Hitachi mining shovel. The mining shovel has arrived on site and will be assembled, commissioned, and put into operation in the fourth quarter 2025. Delivery of the new haul trucks will commence in the fourth quarter 2025 and continue into the first quarter 2026. The refurbished existing fleet and key new pieces of equipment are expected to reduce reliance on expensive rental equipment, increase mining productivity, and lower mining cost per ton over the next several years at Florida Canyon.

Third Quarter 2025 Financial Position

Complete financial results for the third quarter 2025 will be reported and filed on Integra’s profile on SEDAR+ at www.sedarplus.ca and EDGAR profile at www.sec.gov on Wednesday, November 12, 2025

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 M&A, 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 (P.E., SME Registered Member), Integra’s General Manager of the Florida Canyon Mine. Mr. Robinson is a “qualified person” as defined in National Instrument 43- 101 – Standards of Disclosure for Mineral Projects (“NI 43-101”).