Mr. Brian Kynoch reports

DRILLING AT MOUNT POLLEY INTERSECTS 11.0 METRES GRADING 4.43% COPPER, 1.53 G/T GOLD AND 41.7 G/T SILVER

Imperial Metals Corp.'s first diamond drill hole from the Mount Polley 2025 phase 2 diamond drill program, which includes 11.0 metres with a grade of 4.43 per cent copper, 1.53 grams per tonne gold and 41.7 grams per tonne silver. The nine-hole phase 2 program consisted of 3,718.3 metres.

The Mount Polley 2025 phase 2 program had three goals: to test a high-grade zone beneath the Wight pit, to expand and determine the boundaries for mineralization in the higher gold grade encountered at depth in the C2 zone, and to test beneath the previously mined Bell pit for depth extension using new targeting techniques successfully deployed in the Springer pit. The results of the first hole drilled in this program have been received, with the remainder pending.

Drill hole WB-25-268 was collared on the eastern edge of the previously mined Wight pit and targeted a high-grade area located in the Green zone, adjacent to the Martel zone, at depth beneath the Wight pit. The goal of drill hole WB-25-268 was to test the continuity and further define the high-grade zone originally defined by holes WB-05-189 (15.0 metres grading 3.1 per cent copper, 0.33 g/t gold and 20.1 g/t silver) and WB-04-179 (12.4 metres grading 6.7 per cent copper, 3.65 g/t gold and 44.8 g/t silver).

Hole WB-25-268 intercepted a hydrothermal fragmental potassic-altered breccia hosting significant bornite and chalcopyrite cement at the target depth that returned, from 304.4 metres, 11.0 metres grading 4.43 per cent copper, 1.53 g/t gold and 41.7 g/t silver. In addition to the mineralization intercepted in the targeted zone the hole intersected a number of other higher-grade sections, both above and below the targeted area, including 9.6 metres grading 3.71 per cent copper, 0.42 g/t gold and 9.89 g/t silver starting at 272.5 metres.

The higher silver-to-copper ratio returned in this hole is typical of mineralization in the northeastern quadrant of the Mount Polley property. Additional diamond drilling will target this area in 2026.

The Martel zone has previously been defined as an underground resource (see Table 2).

Jim Miller-Tait, PGeo, Imperial's vice-president, exploration, has reviewed this news release as the designated qualified person as defined by National Instrument 43-101 for the Mount Polley exploration program. Samples reported were analyzed at Activation Laboratories Ltd., located in Kamloops. A full quality assurance/quality control program using blanks, standards and duplicates was completed for all diamond drilling samples submitted to the labs. Significant assay intervals reported represent apparent widths. Insufficient geological information is available to confirm the geological model and true width of significant assay intervals.

About Imperial Metals Corp.

Imperial is a Vancouver-based exploration, mine development and operating company with holdings that include the Mount Polley mine (100 per cent), the Huckleberry mine (100 per cent) and the Red Chris mine (30 per cent). Imperial also holds a portfolio of 23 exploration properties in British Columbia.

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