Mr. Wayne Hubert reports

INZINC COMMENCES DIAMOND DRILL PROGRAM AT HIGH-GRADE APEX DISCOVERY; INDY SEDEX (ZN-PB-AG-GA) PROJECT, CENTRAL BC

Inzinc Mining Ltd. has commenced 2026 diamond drilling at the 100-per-cent-owned Indy sedimentary exhalative (zinc-lead-silver-gallium-barite) project, well located 90 kilometres southeast of Prince George in central British Columbia, Canada.

In 2025, exploration drilling achieved a 125-per-cent extension of the near-surface B-9 zone to over 1,000 metres in strike length and culminated with the discovery, at the current northern extension, of the high-grade Apex zone, which remains open for expansion. Significant drill results at Apex included 15.4 per cent Zn, 1.3 per cent Pb and 7.2 grams per tonne Ag over 4.2 metres, which included a very high-grade interval of 20.1 per cent Zn, 1.7 per cent Pb and 9.5 g/t Ag over 3.2 m at the B-9 Apex zone.

The 2026 diamond drill program, including up to seven planned drill holes (1,500 m), will focus on expansion of the high-grade discovery at the B-9 Apex zone, recognized as replacement-style sedex mineralization. Drilling will test for updip and downdip extensions and along strike for up to 350 m. Untested soil geochemical and 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.

"We are very excited to get an early start on follow-up expansion of the high-grade discovery at Apex and to continue the achievements gained across 2025 at Indy," stated Wayne Hubert, chief executive officer. "Separately, relating to other assets in Inzinc's portfolio," added Mr. Hubert, "We would like to congratulate American West Metals on the success of an additional financing to advance the West Desert project in Utah, where Inzinc retains a 50-per-cent indium production royalty (NSR) interest."

Focus on further expansion and exploration of high-grade mineralization:

• B-9 Apex expansion: depth extension and updip definition of the 58-metre-wide mineralized envelope with high grades intersected (20.1 per cent Zn, 1.7 per cent Pb and 9.5 g/t Ag over 3.2 m in hole IB25-043);
• B-9 strike extension: wide-spaced drilling to explore the greater-than-1,200-metre B-9 zone strike to the north of hole IB25-043.

Annual grant of stock options

Inzinc announces the annual grant of incentive stock options to certain directors, officers and consultants to purchase a total of 1.6 million common shares of the company for a period of five years at an exercise price of eight cents per share, effective May 11, 2026. These stock options will vest over the next 12 months.

About Inzinc Mining Ltd.

Inzinc has discovered and is advancing near-surface exploration at the Indy sedex zinc-lead-silver-gallium-barite project (100 per cent) in central British Columbia, Canada. The extensive tenure at Indy covers 200 square kilometres and a 30-kilometre length of underexplored, prospective strata in central B.C. The 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 metres.

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 kilometres of adjacent claims in late 2021.

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