Mr. Wayne Hubert reports

INZINC COMPLETES SPRING DIAMOND DRILL PROGRAM AND AWAITS RESULTS FROM B-9 APEX DISCOVERY AT INDY SEDEX (ZN-PB-AG-GA) PROJECT, CENTRAL BC

Inzinc Mining Ltd. has completed the spring 2026 diamond drill program, with drill core analysis under way, at the 100-per-cent-owned Indy sedex (zinc-lead-silver-gallium-barite) project, well located 90 kilometres southeast of Prince George in central British Columbia, Canada. The drill program followed up on the discovery of the high-grade Apex zone in 2025 (15.4 per cent zinc (Zn), 1.3 per cent lead (Pb) and 7.2 grams per tonne (g/t) silver (Ag) over 4.2 metres, including 20.1 per cent Zn, 1.7 per cent Pb and 9.5 g/t Ag over 3.2 m from 197.6 m downhole in hole IB25-043), which successfully extended the B-9 mineralized trend to over 1,000 m in strike length -- remaining open for expansion.

As planned, the completed 2026 spring diamond drill program (seven holes, 1,437 m) tested a 250 m strike (north and south) of the 2025 B-9 Apex zone discovery and to a depth of 240 m. All drill core samples have been delivered to the laboratory, and sample preparation and analysis are under way. Results are anticipated in the second half of July or early August, depending on lab turnaround time.

B-9 Apex discovery

The high-grade, replacement-style sedex mineralization at the B-9 Apex zone was discovered in late 2025 with a 300 m stepout drill test of the northern extension of the near-surface 700 m long B-9 zone. This achieved a 125-per-cent extension to over 1,000 m in strike length of the B-9 zone. Untested soil geochemical and EM (electromagnetic) geophysical signatures continue for at least another 1,200 m to the northwest of the B-9 Apex zone, representing a high-potential corridor for both extension and additional discoveries.

Indy -- easy access, infrastructure and permitted

Indy is located about a 1.5-hour drive from Prince George, the major hub for transportation and heavy industry in central B.C. The project is located 70 kilometres (km) south of the Yellowhead Highway (Hwy 16), and is accessed via recently upgraded forestry road and bridges providing direct access to the B-9 zone.

Indy is located 85 km from the intercontinental Canadian National Railway (CNR), servicing the port of Prince Rupert and connecting to the port of Vancouver, and 35 km from hydroelectric transmission lines. Western North America's only zinc smelter complex is located approximately 500 km to the south of Indy in the city of Trail, B.C.

The company's five-year drill permit, renewed in 2024, has provisions for up to 36 remaining drill holes, access trails and related work.

About Inzinc Mining Ltd.

Inzinc has discovered and is advancing near-surface exploration at the 100-per-cent-owned Indy project in central British Columbia, Canada. The extensive tenure at Indy covers 200 square km and a 30 km length of underexplored, prospective strata in central B.C. The Indy project is well located with respect to road access, rail, power, port and smelter infrastructure. In 2025, the company announced the extension of the B-9 mineralized trend to a drill defined strike length of greater than 1,000 m and integrate the following.

Significant drill results from B-9 Apex zone (replacement mineralization):

• 15.4 per cent Zn, 1.3 per cent Pb and 7.2 g/t Ag over 4.2 m, including 20.1 per cent Zn, 1.7 per cent Pb and 9.5 g/t Ag over 3.2 m.

Significant drill results from the near-surface B-9 discovery zone (primary mineralization):

• 8.0 per cent Zn, 2.0 per cent Pb and 16.2 g/t Ag over 9.9 m;
• 11.0 per cent Zn, 2.3 per cent Pb and 27.1 g/t Ag over 3.0 m;
• 9.3 per cent Zn, 2.4 per cent Pb and 18.0 g/t Ag over 3.1 m;
• 5.5 per cent Zn, 0.5 per cent Pb and 3.4 g/t Ag over 6.7 m;
• 3.3 per cent Zn, 0.7 per cent Pb and 7.4 g/t Ag over 19.1 m.

South32 Ltd. became a major tenure holder in the Indy belt by staking approximately 200 square km of adjacent claims in late 2021.

Additionally, Inzinc will receive 50 per cent of the revenue (NSR) from the sale of indium mined from American West Metals' (ASX) West Desert project, Utah. Through its equity investment in American West, Inzinc is also exposed to a portfolio of North American base metals projects.

Qualified person

Patrick McLaughlin, PGeo, an independent qualified person as defined in National Instrument 43-101, Standards of Disclosure for Mineral Projects, and a registered professional geoscientist in British Columbia, has approved the technical content of this news release.

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