Mr. Wayne Hubert reports

INZINC INTERSECTS EXCEPTIONAL GRADES OF 20.1% ZN, 1.7% PB, 9.5 G/T AG OVER 3.2 M IN STEP-OUT DRILL HOLE LOCATED 300 M NORTH OF B-9 ZONE

Inzinc Mining Ltd.'s phase 2 2025 drill program has achieved the company's highest-grade drill intersection to date and a significant extension of the B-9 zone to over 1,000 metres in strike length at the 100-per-cent-owned Indy zinc-lead-silver-gallium-barite project, well located 90 kilometres southeast of Prince George in central British Columbia, Canada. The B-9 zone remains open for further exploration along trend to the north and at depth.

"We are delighted with the success of the 300-metre stepout discovery in drill hole IB25-043. These are exceptional grades, comparable to top-quartile zinc-lead-silver deposits globally. The strike extent of B-9 zone mineralized system is now on scale with that associated with the large sedex [sedimentary exhalative] deposits in northwestern Canada. The Indy project is emerging as a tremendous new discovery opportunity in a premium location," remarked Wayne Hubert, chief executive officer of Inzinc.

"Separately, relating to other assets in Inzinc's portfolio," added Mr. Hubert, "we would like to congratulate American West Metals on the success of their recent financing and announcement of work commencing to advance the West Desert project in Utah, where Inzinc retains a 50-per-cent indium production royalty (NSR) interest."

Phase 2 highlights -- drill hole IB25-043

Drill hole IB25-043 was located 300 metres north, directly along strike, of the B-9 zone to take advantage of existing road access.

A 21.7-metre section of core (B-9 mineralized envelope) commences from 180.0 m to 201.7 m (downhole) and contains variably distributed mineralization, with best grades near the bottom of the interval, including:

• 2.1 per cent Zn, 3.5 per cent Pb and 15.0 g/t Ag over 1.9 m from 180.0 m downhole;
• 11.6 per cent Zn, 3.9 per cent Pb and 15.4 g/t Ag over 0.4 m from 185.1 m downhole;
• 1.8 per cent Zn, 0.4 per cent Pb and 2.1 g/t Ag over 2.7 m from 189.3 m downhole;
• 1.4 per cent Pb and 7.4 g/t Ag over 1.2 m from 192.4 m downhole;
• 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;
• Above intersection is included in a wider zone grading 15.4 per cent Zn, 1.3 per cent Pb and 7.2 g/t Ag over 4.2 m, also from 197.6 m downhole, which includes 1.0 m of lower-grade mineralization at the base.

A 125-per-cent strike extension of the B-9 zone has been achieved in 2025:

• B-9 zone extended an additional 300 m north to greater than 1,000 m strike length;
• Remains open along strike and at depth.

Phase 2 summary

The phase 2 diamond drilling program included six drill holes totalling 800 m. In addition to hole IB25-043 (231 m), an additional two holes (IB25-041 and IB25-042) were completed on the same east-west (local grid) drill section which, in aggregate, comprised 65 per cent (521 m) of the total metreage in phase 2. A narrow (0.10 m) zone of radiolarian-style sphalerite mineralization was observed in hole IB25-041 (collared 90 m west of hole IB25-043) in a position located approximately 120 m up-dip of the B-9 mineralized envelope intersected in hole IB25-043. No mineralization was observed in hole IB25-042, which was collared 100 m west of hole IB25-041.

An additional three holes (IB25-040, IB25-044 and IB25-045) were located at the southern B-9 trend. Hole IB25-040 was terminated in broken ground at 57 m downhole. Hole IB25-044 (102 m) was located 60 m north of massive sulphides discovered in hole IB25-029 and intersected sectors of visually lower-grade, pyritic mineralization over several metres. Hole IB25-045 (120 m) was drilled from the same location as IB25-040 at the southern extent of the B-9 zone. This hole intersected a significant fault zone that offsets the B-9 zone. Further drilling is required to identify fault movement.

Outlook for 2026 -- focus on further expanding and delineating limits of high-grade mineralization

Preliminary planning for 2026 has commenced. Potential drill targets include:

• Hole IB25-043 expansion: depth extension and up-dip definition of the 21.7-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);
• B-9 strike extension: wide-spaced drilling to explore the greater-than-1,000-metre B-9 zone strike to the north of hole IB25-043;
• B-9 depth extension: wide-spaced drilling to explore the depth potential along the greater-than-1,000-metre strike extent of the B-9 trend;
• Delta horizon exploration: first exploration drilling of a 1.4-kilometre-long target -- similar geology and geophysical signature to B-9 zone and located four kilometres north along the prospective corridor; Delta is host to numerous surface rock samples returning up to 25 per cent barite and anomalous zinc/lead; a strong, continuous soil anomaly (Zn, Pb, Ba) occurs parallel to the entire 1.4-kilometre trend.

Large exploration targets along seven-kilometre prospective corridor

A seven-kilometre-long prospective corridor is defined by multiple kilometre-scale soil geochemical anomalies (over 6,000 soil samples) and geophysical anomalies (1,100 line km of airborne geophysics flown over the 30-kilometre-long property in 2022). A multiyear exploration permit, for 60 drill holes, was renewed in 2024. Drilling to date has tested just 15 per cent of the prospective corridor.

Indy 2025 achievements:

• 300-metre stepout hole IB25-043 intersects exceptional grades -- averaging 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; above intersection is included in a wider zone grading 15.4 per cent Zn, 1.3 per cent Pb and 7.2 g/t Ag over 4.2 m also from 197.6 m downhole, which includes 1.0 m of lower-grade mineralization at the base;
• 125-per-cent extension of near-surface mineralization to greater than 1,000 m strike -- B-9 zone remains open for expansion along strike and at depth, with all intersections within 180 m of surface to date;
• Near-surface high grades contain gallium -- 11.0 per cent Zn, 2.3 per cent Pb and 27.1 g/t Ag over 3.0 m from 61.0 m downhole in hole IB25-029;
• A sample of massive sulphide comprising a 0.6-metre length (from 63.4 m to 64.0 m) grading 34.8 per cent Zn, 7.0 per cent Pb and 76.7 g/t Ag returns 4.46 parts per million gallium;
• Increased widths directly below surface -- 19.1-metre intersection from 29.9 m downhole averaging 3.3 per cent Zn, 0.7 per cent Pb and 7.4 g/t Ag, including a high-grade zone averaging 8.5 per cent Zn, 2.1 per cent Pb and 21.3 g/t Ag over 2.0 m from 31.0 m downhole, intersected in hole IB25-032;
• Multiple mineralized horizons recognized -- a second, shallower mineralized horizon identified and developing to the east of previous drilling.

New unexplored mineral belt with road access and proximal infrastructure

Indy is well located with respect to road, rail, power, port and smelter infrastructure in central British Columbia. The extensive tenure extends over a continuous 30 km unexplored trend and an area of 200 square km.

The near-surface mineralization (zinc-lead-silver-gallium and barite) discovered at Indy is similar to CD-type sediment-hosted (sedex) deposits in the prolific Selwyn basin of northeastern British Columbia and Yukon. These deposits often include significant silver and critical minerals as byproducts.

About Inzinc Mining Ltd.

Inzinc is an active explorer at its Indy project (100 per cent) in central British Columbia, Canada. The company is exploring near-surface zinc-lead-silver-gallium and barite mineralization discovered at Indy in a new, unexplored mineral region analogous to the prolific Selwyn basin of northeastern British Columbia and Yukon. South32 Ltd. became a major tenure holder in the Indy belt by staking approximately 200 square km of adjacent claims in late 2021. Through its equity investment in American West Metals and a 50-per-cent royalty interest (net smelter return) from any future production of indium mined at American West's West Desert project, 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.

Quality assurance/quality control

HQ drill core was collected from the drill site and delivered to the Indy camp by Inzinc staff. The core was logged, sample intervals were outlined and photographic records were collected. Core samples were split using a diamond saw or manually chipped at the camp, with one-half of the core submitted for assay and the remainder stored in wooden core boxes. The core was bagged in individually marked plastic sample bags and shipments were compiled in labelled rice bags. Core shipments were delivered by Inzinc contract geologists to Bandstra Transportation Systems Ltd. in Prince George, B.C., for furtherance to MSA Labs in Langley, B.C., Canada, for analysis. Samples were prepared by MSA and analyzed by ICP-AES multielement plus four-acid digestion and select AAS fire assay. In addition to the labs' QA/QC procedures, Inzinc inserted blind standards, blanks or lab-directed duplicates by special instruction -- every 10th sample. The results from the QA/QC samples were within industry norms.

We seek Safe Harbor.