Form 8-K

8-K — NexMetals Mining Corp.

Accession: 0001493152-26-047782

Filed: 2026-10-20

Period: 2026-10-20

CIK: 0000795800

SIC: 1000 (METAL MINING)

Item: Regulation FD Disclosure

Item: Financial Statements and Exhibits

Documents

8-K — form8-k.htm (Primary)

EX-99.1 (ex99-1.htm)

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8-K

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Filename: form8-k.htm · Sequence: 1

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0000795800

2026-10-20

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UNITED

STATES

SECURITIES

AND EXCHANGE COMMISSION

Washington,

D.C. 20549

FORM

8-K

CURRENT

REPORT

Pursuant

to Section 13 OR 15(d) of the Securities Exchange Act of 1934

Date

of Report (Date of earliest event reported): October 20, 2026

NEXMETALS

MINING CORP.

(Exact

name of registrant as specified in its charter)

British

Columbia, Canada

(State

or other jurisdiction of incorporation)

001-42750

N/A 00-0000000

(Commission File Number)

(IRS Employer Identification

No.)

1600-1021

West Hastings Street,

Vancouver,

British Columbia, Canada

V6E

0C3

(Address of principal

executive offices)

(Zip Code)

(866)

794-6396

(Registrant’s

telephone number, including area code)

N/A

(Former

name or former address, if changed since last report)

Check

the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under

any of the following provisions (see General Instruction A.2. below):

☐

Written communications

pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐

Soliciting material pursuant

to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐

Pre-commencement communications

pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐

Pre-commencement communications

pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities

registered pursuant to Section 12(b) of the Act:

Title

of each class

Trading

Symbol(s)

Name

of each exchange on which registered

Common

Shares, no par value

NEXM

Nasdaq

Stock Market LLC (Nasdaq Capital Market)

Indicate

by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405

of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging

growth company ☐

an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying

with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 7.01 Regulation

FD Disclosure.

October 20, 2026, NexMetals Mining Corp. (the “Company”) issued a news release announcing an updated Mineral Resource Estimate

for Selebi North, one of two deposits comprising its past-producing Selebi copper-nickel-cobalt mines in Botswana. A copy of this press

release is attached as Exhibit 99.1 hereto and is incorporated herein by reference. The Company undertakes no obligation to update, supplement

or amend the materials attached hereto as Exhibit 99.1.

Cautionary

Statements to Investors on Reserves and Resources

The

news release furnished herewith uses the terms “mineral resources”, “indicated mineral resources” and “inferred

mineral resources” as such terms are defined under Canadian National Instrument 43-101 - Standards of Disclosure for Mineral Projects

(“NI 43-101”). NI 43-101 is a rule developed by the Canadian Securities Administrators, which establishes standards for all

public disclosure a Canadian issuer makes of scientific and technical information concerning mineral projects.

October 31, 2018, the SEC adopted new mining disclosure rules (“S-K 1300”) that are more closely aligned with current industry

and global regulatory practices and standards, including NI 43-101, with which we comply because we are also a “reporting issuer”

under Canadian securities laws. While S-K 1300 is more closely aligned with NI 43-101 than the prior mining disclosure rules of the Securities

and Exchange Commission, there are some differences. Accordingly, there is no assurance any mineral resources that the Company may report

as “indicated mineral resources” and “inferred mineral resources” under NI 43-101 will be the same as the reserve

or resource estimates prepared under S-K 1300. Investors should not assume that any part or all of indicated mineral resources or inferred

mineral resources will ever be converted into a higher category of mineral resources or into mineral reserves. Mineralization described

using these terms has a greater amount of uncertainty as to their existence and feasibility than mineralization that has been characterized

as reserves. Accordingly, investors are cautioned not to assume that any “indicated mineral resources”, or “inferred

mineral resources” on the Company’s projects are or will be economically or legally mineable. Further, “inferred resources”

have a greater amount of uncertainty as to their existence and as to whether they can be mined legally or economically. Therefore, investors

are also cautioned not to assume that all or any part of the inferred resources exist. In accordance with Canadian rules, estimates of

“inferred mineral resources” cannot form the basis of feasibility or other economic studies, except in limited circumstances

where permitted under NI 43-101.

The

information in this Current Report on Form 8-K (including Exhibit 99.1 attached hereto) is being furnished and shall not be deemed to

be filed for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise

be subject to the liabilities of that section, nor shall it be deemed to be incorporated by reference in any filing under the Securities

Act of 1933, as amended, or the Exchange Act, whether made before or after the date hereof and regardless of any general incorporation

language in such filing.

Item 9.01 Financial

Statements and Exhibits.

(d)

Exhibits

Exhibit

No.

Description

99.1

Press Release dated October 20, 2026.

104

Cover Page Interactive Data

File (embedded within Inline XBRL document).

SIGNATURES

Pursuant

to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by

the undersigned hereunto duly authorized.

NEXMETALS

MINING CORP.

(Registrant)

By:

/s/

Brett MacKay

Chief Financial Officer

Date:

October 20, 2026

EX-99.1

Filename: ex99-1.htm · Sequence: 2

Exhibit

99.1

NexMetals

Nearly Triples Selebi North Indicated Mineral Resources to 8.95 Million Tonnes and Increases Inferred Mineral Resources to 9.48 Million

Tonnes

Total

Selebi Mines Mineral Resource Estimate Now at 8.95 Million Tonnes Indicated (412 Million Pounds of Copper Equivalent) and 41.95 Million

Tonnes Inferred (2.3 Billion Pounds of Copper Equivalent)

Vancouver,

British Columbia, October 20, 2026 – NexMetals Mining Corp. (TSXV: NEXM) (Nasdaq: NEXM) (the “Company” or

“NexMetals”) is pleased to announce an updated Mineral Resource Estimate for Selebi North (the “2026 Selebi

North MRE”), one of two deposits comprising its past-producing Selebi copper-nickel-cobalt mines in Botswana. The 2026 Selebi

North MRE, together with the previously announced Mineral Resource Estimate for Selebi Main (the “2026 Selebi Main MRE”;

see news release dated October 1, 2026), comprise 8.95 million tonnes of Indicated Mineral Resources and 41.95 million tonnes

of Inferred Mineral Resources (collectively, the “2026 MRE”). The 2026 MRE was completed by The MSA Group (“MSA”)

of Johannesburg, South Africa. Table 1 below compares the 2026 MRE with the 2024 Mineral Resource Estimate (“2024 MRE”)

for both deposits.

Table

1: 2024 MRE compared to the 2026 MRE

Resource

Category

Metric

2024

2026

Change

Selebi

North Indicated

Tonnage

(Mt)

3.00

8.95

+198%

Copper

grade (%)

0.90

1.03

+14%

Nickel

grade (%)

0.98

1.08

+10%

Cobalt

grade (%)

—

0.06

New

Contained

CuEq (Mlbs)

—

412

—

Selebi

North and Main Combined Inferred

Tonnage

(Mt)

24.72

41.95

+70%

Copper

grade (%)

1.50

1.45

−3%

Nickel

grade (%)

0.92

1.01

+10%

Cobalt

grade (%)

—

0.05

New

Contained

CuEq (Mlbs)

—

2,255

—

Highlights:

2026

Selebi North MRE

● Indicated

Mineral Resources nearly triple to 8.95 million tonnes grading 1.03% copper and 1.08% nickel,

from 3.00 million tonnes grading 0.90% copper and 0.98% nickel in 2024.

● Inferred

Mineral Resources increases 63% to 9.48 million tonnes grading 1.21% copper and 1.13% nickel,

from 5.83 million tonnes grading 0.90% copper and 1.07% nickel in 2024.

● Drilling

drives resource growth and conversion. An additional 42,633 metres in 92 holes since

the June 30, 2024 data cut-off supported resource expansion and conversion of approximately

20% of previously Inferred Mineral Resources to Indicated Mineral Resources, strengthening

confidence for future mine planning.

● Updated

economic and technical inputs. The 2026 Selebi North MRE reflects updated metal price

assumptions of US$5.10/lb copper, US$9.10/lb nickel and US$20.00/lb cobalt and incorporates

previously reported metallurgical results demonstrating the ability to produce separate,

clean copper and nickel concentrates that meet commercial smelter specifications (see news

releases dated (September 3, 2025, and October 22, 2025).

New

Geological Findings and Interpretations Underway

● Selebi

North’s South Limb turns toward Selebi Main at depth, giving the first geological basis

for a connection between the two deposits. Previously, the interpreted orientations of

the two deposits did not suggest convergence, leaving limited geological support for potential

continuity through the interpreted “Hinge Zone”. New drilling establishes the

South Limb flattening at depth and turning toward Selebi Main. That geometry is consistent

with earlier borehole electromagnetic (“BHEM”) surveys indicating continuity

between the deposits. Both copper and nickel grades strengthen down plunge at Selebi North.

Together, the structural, geophysical and geochemical evidence supports prioritizing the

area between the deposits for further exploration.

● Magnesium-rich

rocks point to a possible intrusive keel. Continuing work by Dr. Peter Lightfoot, PhD,

P.Geo., consulting geologist to the Company and internationally recognized nickel sulphide

specialist and former Chief Geologist at Inco/Vale, has re-interpreted the Selebi intrusive

system. Rocks historically logged as “amphibolite” are now recognized as a suite

of primary igneous rock types — olivine pyroxenite, pyroxenite, olivine melagabbronorite

and gabbronorite — altered to varying degrees. The most magnesium-rich of these, in

previously released deep holes SMD-25-202 and SMD-25-204, both down plunge of the Selebi

North South Limb toward Selebi Main, retain fresh olivine, the first silicate to crystallize

from a magnesian nickel-bearing magma. Rocks of this kind are characteristic of the keel

of an intrusion — its deepest, downward-projecting part, where dense magmatic sulphide

can accumulate. Together with the structural study underway by TECT Geological Consulting,

this work is defining the intrusion’s geometry and the controls on sulphide distribution

and is generating targets for further nickel-copper exploration.

● Significant

resource growth in 2026 and important geological findings set the stage for further expansion.

Drilling at Selebi Main materially extended mineralization, while Selebi North’s

South Limb extends down plunge and turns toward Selebi Main. This emerging geological evidence

of a potential connection, together with indications of an intrusive keel, points to potential

growth opportunities within and between the deposits.

Project

Funding Review & Selkirk PEA

● Project

funding review. Earlier this year, the Company engaged National Bank of Canada Capital

Markets as financial advisor to evaluate project funding alternatives for its assets, with

a focus on minimizing dilution to existing shareholders. The Company is working diligently

to conclude its review. There can be no guarantee that this review will result in a transaction.

● Selkirk

Technical Study Advances. The Company has engaged DRA Global to complete a Preliminary

Economic Assessment (“PEA”) for Selkirk while the Company evaluates a

range of strategic options for the asset.

Sean

Whiteford, CEO of the Company, commented: “With 8.95 million tonnes Indicated Mineral Resources and 41.95 million tonnes Inferred

Mineral Resources, and both deposits still open, we believe Selebi has the potential to become a world-class copper-nickel sulphide project.

Growth in our mineral resources at both Selebi North and Selebi Main has exceeded our expectations and demonstrates the value of our

investment in drilling and metallurgical work in 2025 and 2026.”

“At

Selebi North, we’ve nearly tripled the Indicated Mineral Resource while increasing copper and nickel grades, and the South Limb

is changing direction toward Selebi Main. At Selebi Main, wide-spaced drilling has rapidly expanded tonnage in the newly defined Flexure

Zone, delivering higher grades and thicker intersections. Dr. Peter Lightfoot’s interpretation of deep drilling, which is detailed

later in the press release, also supports further investigation of a potential intrusive keel, adding another dimension to our exploration

targeting.”

“These

developments could have positive implications for future mine design and project economics. While we continue to advance the Selebi PEA,

we are allowing additional time to better understand the scale and geometry of the expanding resource, inform the placement of critical

infrastructure and evaluate alternative restart options. The structural study underway with TECT Geological Consulting will support this

work by refining our understanding of the orebody’s geometry and structural controls. The Company will provide further updates

on the Selebi PEA, including expected completion timing, as the study advances.”

“We

continue to prioritize expenditures across drilling and technical studies, aligning the pace of work with available capital and directing

the Company towards the opportunities we believe offer the greatest value creation for shareholders.”

Figure

1: Long section of Selebi Mines highlighting the 2026 Selebi Main and Selebi North MREs.

Figure

2: Selebi North’s South Limb turns toward Selebi Main at depth, suggesting a potential connection between the deposits.

Ultramafic

Rocks and Potential Intrusive Keel

Dr.

Peter Lightfoot’s examination of the most magnesium-rich rocks in previously released deep holes SMD-25-202 and SMD-25-204 provides

further insight into the Selebi intrusive system. Both holes lie down plunge of the Selebi North South Limb, in the direction of Selebi

Main.

Rocks

historically logged as “amphibolite” are now recognized as a suite of primary igneous rock types, altered to varying degrees

to amphibolite. They are interpreted to fall into four main groups: olivine pyroxenite, pyroxenite, olivine melagabbronorite and gabbronorite.

A thin section from the most magnesium-rich sample in SMD-25-204 contains fresh olivine, the first silicate to crystallize from a magnesian

nickel-bearing magma. Rocks of this kind are characteristic of the keel of an intrusion, its deepest, downward-projecting part, where

dense magmatic sulphide can accumulate.

Mafic-ultramafic

intrusive rocks relate to nickel sulphide ore in two distinct ways:

● Primary

magmatic keel, exemplified by Voisey’s Bay, Labrador. The most primitive rocks, magnesium-rich

variable-textured troctolites, are directly linked to the Ovoid and Eastern Deeps orebodies.

Sulphide collected where feeder conduits widened or opened into the main chamber. Here, the

primitive rocks mark the ore-forming pathway, and tracing them leads toward sulphide.

● Deformation-generated

folds and boudins, exemplified by Thompson and Birchtree, Manitoba. Later deformation and

high-grade metamorphism broke the original ultramafic intrusions into isolated boudins. Sulphide

flows more readily than silicate rock, so it was remobilized to different extents, and where

it came to rest differs between deposits. About 90% of Thompson’s ore is now hosted

in metasedimentary rocks, with its position controlled by folds and pressure shadows. At

Birchtree, by contrast, most of the high-grade mineralization is concentrated at the margins

of the ultramafic boudins.

Both

processes may have operated in the prospective, approximately 1.5–2 km-long corridor between Selebi North and Selebi Main: primary

sulphide concentrated in the keel, then redistributed by folding. Distinguishing their effects will help determine whether exploration

follows the magnesium-rich rocks directly or the structures that control them.

Table

2: 2026 Selebi Mines Resource Estimate as of October 16, 2026

Tonnage

Grade

Contained

Metal

Classification

Deposit

(Mt)

(%)

(Mlbs)

Total

(Mlbs

CuEq)

Indicated

Selebi

North

8.95

1.03

1.08

0.06

204

214

412

Total

8.95

1.03

1.08

0.06

204

214

412

Inferred

Selebi

Main

Upper

Zone

23.52

1.61

1.05

0.05

834

546

1,365

Selebi

Main

Lower

Zone

8.95

1.31

0.77

0.04

259

153

407

Selebi

North

9.48

1.21

1.13

0.06

253

236

483

Total

41.95

1.45

1.01

0.05

1,345

935

2,255

1. All

tabulated data have been rounded and as a result minor computational errors may occur.

2. Mineral

Resources, which are not Mineral Reserves, have no demonstrated economic viability. There

is no guarantee that all or any part of the Mineral Resource will be converted into a Mineral

Reserve. The estimate of Mineral Resources may be materially affected by geology, environment,

permitting, legal title, taxation, socio-political, marketing, or other relevant issues.

3. Mt

= Million tonnes, Mlbs = million pounds, CuEq = copper equivalent

4. The

2026 MRE has been prepared in accordance with the CIM Definition Standards (2014) and CIM

Best Practice Guidelines (2019) with an effective date of October 16, 2026.

5. Mineral

Resources are reported at a cut-off value of US$75/t NSR (Net Smelter Return), defined as

received value of final metal recovered minus off-site costs, and a minimum thickness of

1.5 metres. Block model estimates of less than US$75/t NSR are included within the Mineral

Resource in areas where it was considered not feasible to mine selectively around them. Areas

of the block model were excluded in low grade areas where there is no potential to define

a mineable block above US$75/t NSR.

6. Mineral

Resources are estimated using long-term prices of US$9.10/lb Ni, US$5.10/lb Cu, US$20.00/lb

Co. The same metal prices were used in NSR calculations.

7. Mineral

Resources are estimated using nickel, copper and cobalt recoveries of 55.6%, 96.1%, and 60.2%,

respectively, derived from metallurgical studies which consider a two-concentrate scenario.

8. Payabilities

and off-site treatment and refining costs were derived from an independent marketing study

commissioned by NexMetals.

9. Bulk

density has been estimated in the block model based on an extensive data set of measurements

taken from drillhole cores. The average density is 3.63 t/m3 for the mineralized

zone.

10. Mineral

Resources are reported using NSR values which assume mining costs of US$47.60/tonne, concentrate

processing costs of US$20.00/tonne and G&A of US$5.50/tonne.

11. Areas

depleted or sterilized by mining were removed from the mineral resource.

12. There

are no Mineral Reserves.

13. Copper

equivalent is calculated using the formula CuEq =(Cu%*96.4+Ni%*87.0+Co%*132.7)/96.4.

Mineral

Resource Data and Quality Control

The

historical sampling data collected by the previous owner and operator, BCL Limited (“BCL”) included Ni and Cu assays.

The historical data was verified by NexMetals through drilling of new underground holes and visual inspection of exposed mineralization

in underground workings. The data compared within reasonable limits given the variability of the mineralization.

The

geological database used in the Selebi North MRE included 175 NexMetals drillholes, completed in 2023, 2024 and 2025, drilled at various

inclinations and directions from underground workings. BCL drilled numerous horizontal resource definition holes as horizontal fans on

each sublevel. Channel samples were cut perpendicularly across the mineralization exposed in the 10 m to 15 m vertically spaced sill

drives at 10 m intervals along strike using a saw with rotating diamond impregnated blades. In many cases, diamond drilling extended

the channel sample intercept into either or both sidewalls where the mineralization was not fully exposed in the sill drive. MSA examined

the BCL data in and immediately surrounding the unmined areas for spatial consistency with the underground workings and included the

validated data in the estimation data. Historical surface drillholes were not used in the estimate due to discrepancies in the position

of mineralized intercepts relative to underground acquired data. Given the voluminous underground drilling and channel sampling database,

the exclusion of the BCL surface drillhole data is not significant to the estimate.

The

BCL assays were completed at the BCL Phikwe Laboratory. At the time of preparation and analysis, the BCL-owned laboratory was not independent

of the operator and accredited only for high grade matte analyses, but not for exploration grade analyses. Ni and Cu were analysed by

flame atomic absorption spectrometry. Relative density measurements were obtained by water immersion method.

The

NexMetals drill core was logged, photographed and marked for sampling in nominal lengths of one metre. The core samples were cut in half

longitudinally using a rotating diamond saw. The core samples were given a unique sample reference number, bagged and despatched to ALS

Laboratories Ltd. in Johannesburg, South Africa for analysis (SANAS Accredited Testing Laboratory, No. T0387). Samples were analysed

for Ni, Cu, and Co using a peroxide fusion preparation and inductively coupled plasma atomic emission spectrometry (ICP-AES) finish (ME-ICP81).

Analyses for Pt, Pd, and Au were by fire assay (30 g nominal sample weight) with an ICP-AES finish (PGMICP23), also by ALS. Ag was analysed

using a 4-acid digest and ICP-AES finish (ME-ICP61). Specific gravity measurements were also completed by ALS on pulps of selected samples.

The

NexMetals drilling was subjected to a comprehensive programme of quality assurance and quality control by NexMetals, independent of the

laboratories’ own QAQC measures, including certified reference materials (5%), blank samples (5%), coarse duplicate samples (5%)

and pulp duplicate samples (5%). The Qualified Person, Mr. J.C. Witley (BSc Hons, MSc (Eng.)), is satisfied that the assay results are

of sufficient accuracy and precision for use in Mineral Resource estimation.

Mineral

Resource Estimate

The

2026 Selebi North MRE was completed by The MSA Group in Johannesburg, South Africa.

The

Mineral Resource was estimated using the Canadian Institute of Mining, Metallurgy and Petroleum (CIM) Best Practice Guidelines and is

reported in accordance with the 2014 CIM Definition Standards, which have been incorporated by reference into National Instrument 43-101

– Standards of Disclosure for Mineral Projects (“NI 43-101”).

The

deposit can be described as a metamorphosed magmatic nickel-copper sulphide deposit. Mineralization is hosted with a folded amphibolite

unit that is structurally complex and comprises two main fold structures that are contiguous forming two antiformal structures separated

by a synformal structure. The limbs and the fold closures are mineralized and define three main zones with differing geological characteristics

known as the South Limb, N2 and N3. The synformal area between the N2 and N3 and towards the southern part of the South Limb tend to

have more variable mineralization The mineralization plunges approximately 40° to 45° towards the west to west-southwest, although

a change in the plunge direction towards the southwest is interpreted in the deeper areas. The northern limbs to each fold structure

are subvertical, whereas the southern limbs tend to be more moderately dipping and variable at an average of approximately 40°to

the southeast. The South Limb and South Limb-N2 fold closure generally hosts the thickest intervals of mineralization, whereas the N3

Limb hosts the highest grades. Mineralization can reach thicknesses of up to 30 m in the fold closure areas and can narrow to 10’s

of cm in the N3 and pinch out locally. Mineralization at Selebi North comprises massive, semi-massive and disseminated sulphides contained

within a unit of amphibolite that is surrounded by undifferentiated quartzo-feldspathic and mafic gneisses. In the wider portions of

the deposit a distinct schistose amphibolite unit occurs which generally forms the footwall to the potentially economic mineralization,

however locally mineralization can extend to within it. Massive sulphide tends to be preferentially developed near the hangingwall contact

with the gneiss.

NexMetals

drilling intersected nickel-copper sulphides at depths of up to approximately 1,550 m below surface. Stoping has depleted the Mineral

Resource from near surface to between approximately 850 m and 900 m below surface.

Cobalt

and silver occur within the nickel-copper sulphide mineralization, with sufficient cobalt data to include in the 2026 MRE; however, silver

assays are not available over much of the Mineral Resource extent and have not been included in the 2026 Selebi North MRE. Minor concentrations

of platinum and palladium occur within the nickel-copper sulphide mineralization for which economic potential has not been established

and, similarly to silver, platinum and palladium assays do not cover the full extent of the Mineral Resource. Sulphide mineralogy is

primarily pyrrhotite, chalcopyrite and pentlandite.

All

recent exploration at the project, since the closure of the mine, was completed by NexMetals between 2022 and 2026. All prior exploration

work of relevance to the 2026 Selebi North MRE was completed by the previous operator, BCL, up until 2016, this being the underground

drilling and channel sampling that exist within the top 50 m of the mineral resource and inform less than 10% of the Mineral Resource

Estimate. The drilling completed since the 2024 MRE allowed for refinement of the previous interpretation and extension to the previously

defined resource area. No additional exploration data have been collected since the last assays were received by NexMetals on 26 April

2026.

Geological

modelling was undertaken in Leapfrog Geo utilising implicit modelling. Mineralized intercepts were defined in the drillhole and channel

sample data based on thickness, lithology and grade. Intercepts were selected based on an approximate threshold Net Smelter Return (NSR)

value of US$70/t using nickel, copper and cobalt grades, while ensuring geological continuity between closely spaced intercepts. Given

the strong association of the higher grade mineralisation with the hangingwall contact of the amphibolite with the enclosing gneiss this

was used as the preferred hangingwall contact during modelling to ensure geological continuity. A minimum thickness of 1.5 metres was

used to allow for a potential minimum mining width, and in some cases dilution outside the mineralized vein was included.

Variography

was completed using Datamine Supervisor software. Ellipsoids were orientated in the plane of mineralization with anisotropy along the

mineralization plunge. Nickel, copper, and cobalt grades and density were interpolated into a non-rotated block model with a parent cell

size of 5 mX by 5 mY by 5 mRL using ordinary kriging. The Datamine process of “Dynamic Anisotropy” was used to modify the

search ellipse to changes in the mineralization orientation. Volumes representing mined voids were removed and NSR was then calculated

for each block model cell using the estimated grades, metal prices, recoveries, off-site costs and payabilities. The Mineral Resource

was classified into the Indicated and Inferred categories, taking into account data quality, geological modelling uncertainty, drillhole

spacing, drillhole intersection angle and kriging outputs. The majority of the Inferred Mineral Resource is informed by drillholes with

an approximate spacing of 100 metres and the majority of the Indicated Mineral Resource is informed by drillholes with an approximate

spacing of 50 metres or significantly less close to the mined areas. The Mineral Resource extent was extrapolated a maximum of 50 metres

along strike taking into account the mineralization trends and surrounding data.

The

Mineral Resource was reported using a NSR value above US$75/t and a minimum thickness of 1.5 metres. Block model estimates of less than

US$75/t NSR are included within the Mineral Resource in areas where it was considered not feasible to mine selectively around them. Areas

of the block model were excluded in low grade areas where there is no potential to define a mineable block above US$75/t NSR. Using concentrate

processing costs of US$20.00/tonne, G&A of US$5.50/tonne, mining costs of US$47.60/tonne and royalties of 3% for base metals, the

Mineral Resource satisfies cut-off grade criteria and the QP considers that reasonable prospects for eventual economic extraction (RPEEE)

for the Mineral Resource have been demonstrated.

Mineral

Resources are not Mineral Reserves and do not have demonstrated economic viability. The estimate of Mineral Resources may be materially

affected by environmental, permitting, legal, title, taxation, socio-political, marketing, or other relevant issues. There is no certainty

that any Mineral Resources will be converted into Mineral Reserves. The quantity and grade of reported Inferred Mineral Resources in

the 2026 MRE are uncertain in nature, there has been insufficient exploration to define these Inferred Mineral Resources as an Indicated

or Measured Mineral Resource, and it is uncertain if further exploration will result in upgrading them to an Indicated or Measured Mineral

Resource category.

Qualified

Persons

Mr.

J.C. Witley (BSc Hons, MSc (Eng.)) is a geologist with more than 35 years’ experience in base and precious metals exploration and

mining as well as Mineral Resource evaluation and reporting. He is Head of Mineral Resources for The MSA Group (an independent consulting

company), is registered as Pr.Sci.Nat. with the South African Council for Natural Scientific Professions (SACNASP) and is a Fellow of

the Geological Society of South Africa (GSSA). Mr. Witley has the appropriate relevant qualifications and experience to be considered

a “Qualified Person” for the style and type of mineralization and activity being undertaken as defined in NI 43-101 and is

considered independent of NexMetals pursuant to NI 43-101. Mr. Witley has reviewed and approved the technical and scientific information

within this news release pertaining to the 2026 MRE.

Verification

by Mr. Witley included a site visit to inspect historical mineralized core, observe existing infrastructure on surface and underground,

examine mineralization in underground drives, and verify several surface drillhole collar locations (both historical and recent). The

mineralization in 16 NEXM holes was inspected by the QP together with the sample assay results to verify the magnitude of the mineralization

copper and nickel grades. In addition, a selection of samples collected by NexMetals have been verified against independently accessed

assay certificates, and a random selection of historical database results have been compared against digital records.

Sharon

Taylor, MSc, P.Geo., Vice President, Geophysics of the Company, a “qualified person” as defined under NI 43-101, has reviewed

and approved all other scientific and technical information in this news release other than the information pertaining to the 2026 MRE

and the information approved by Dr. Lightfoot.

Dr.

Peter Lightfoot, PhD, P.Geo., a Consulting Geologist to the Company, a “qualified person” as defined under NI 43-101, has

reviewed and approved the scientific and technical information in this news release relating to the geology, petrology and lithogeochemistry

of the Selebi intrusive system, including the information under the headings “Magnesium-rich rocks point to a possible intrusive

keel” and “Ultramafic Rocks and Potential Intrusive Keel”.

Technical

Report

The

2026 MRE will be supported by a NI 43-101 Technical Report to be filed within 45 days of the Company’s news release dated October

1, 2026.

Clarification

Regarding Engagement Agreement

Further

to the Company’s news release dated October 1, 2026, the Company wishes to clarify that its engagement agreement with SRC Swiss

Resource Capital AG has a 6-month term extending until March 1, 2027.

About

NexMetals Mining Corp.

NexMetals

Mining Corp. is a TSX.V and NASDAQ listed mineral exploration and development company focused on redeveloping the past-producing Selebi

and Selkirk copper-nickel-cobalt-platinum group element mines in Botswana. At Selebi, NexMetals has confirmed the scale of mineralization

is larger than historical estimates, supported by NI 43-101- and Regulation S-K 1300-compliant resource estimates, with ongoing down-hole

geophysics, drilling, and metallurgical programs aimed at expanding resources and supporting future economic studies. The Company is

led by an experienced management and technical team with a proven track record in global mineral projects, emphasizing disciplined execution,

transparent governance, and long-term stakeholder value creation.

For

further information about NexMetals Mining Corp., please contact:

Sean

Whiteford

CEO

info@nexmetalsmining.com

1-866-794-NEXM

(6396)

https://x.com/NexMetalsCorp

LinkedIn:

https://www.linkedin.com/company/NexMetalsMiningCorp

Facebook:

https://www.facebook.com/NexMetalsMiningCorp

Neither

the TSX Venture Exchange and its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) nor

the Nasdaq Stock Market LLC accepts responsibility for the adequacy or accuracy of this news release. No stock exchange, securities commission

or other regulatory authority has approved or disapproved the information contained herein.

Cautionary

Note Regarding Forward-Looking Statements

This

news release contains “forward-looking statements” within the meaning of the United States federal securities laws and “forward-looking

information” within the meaning of applicable Canadian securities legislation (collectively, “forward-looking information”)

based on expectations, estimates and projections as at the date of this news release. Forward-looking information involves risks, uncertainties

and other factors that could cause actual events, results, performance, prospects and opportunities to differ materially from those expressed

or implied by such forward-looking information. For the purposes of this release, forward-looking information includes, but is not limited

to, the 2026 MRE; the filing of a Technical Report prepared in accordance with NI 43-101 supporting the 2026 MRE and the timing thereof;

the potential conversion of Inferred Mineral Resources to Indicated Mineral Resources and increased confidence for future mine planning;

the potential geological connection and continuity between the Selebi North and Selebi Main deposits through the Hinge Zone; the potential

presence of an intrusive keel and the prospectivity of the corridor between Selebi North and Selebi Main; the results and timing of the

structural study by TECT Geological Consulting; the generation of exploration targets and the direction and focus of future exploration;

the deposits remaining open and the potential for further resource growth within and between the deposits, including at depth at the

Selebi Mine and within the Flexure Zone; Selebi’s potential to become a world-class copper-nickel sulphide project; the ability

to produce separate, clean copper and nickel concentrates that meet commercial smelter specifications; the potential implications of

the expanding resource for mine design and project economics; the additional time taken for the Selebi PEA, the evaluation of alternative

restart options and the timing and scope of further drilling and technical work; the Company’s Project Funding Review for the Company’s

assets, including its scope, progress, the timing and completion, and the potential outcomes of that process, including minimizing dilution

to existing shareholders; the completion of a PEA for Selkirk by DRA Global; and the Company’s plans to prioritize expenditures,

align the pace of work with available capital and direct the Company towards the opportunities it believes offer the greatest value to

shareholders. These forward-looking statements, by their nature, require the Company to make certain assumptions and necessarily involve

known and unknown risks and uncertainties that could cause actual results to differ materially from those expressed or implied in these

forward-looking statements.

Forward-looking

information is based on a number of material assumptions that management believes to be reasonable as at the date of this news release,

including, but not limited to: the accuracy of the 2026 MRE and the key inputs and parameters on which it is based, including long-term

metal prices, metallurgical recoveries, payabilities, off-site costs, royalties, mining, processing and G&A cost assumptions and

the NSR cut-off value; the reliability of historical data collected by BCL; the validity of the Company’s current geological, structural,

geophysical and geochemical interpretations; the continuity of mineralization between drillholes and down plunge; the availability of

drilling equipment, personnel and contractors; the Company’s ability to obtain financing on acceptable terms when needed; currency

exchange rates consistent with current expectations; the Project Funding Review and the Selkirk PEA proceeding substantially as currently

anticipated; the receipt of required governmental, environmental and other approvals and permits in a timely manner; the absence of material

adverse changes in the political, regulatory, fiscal and economic environment in Botswana, including royalty and tax regimes; and the

continued engagement and performance of the Company’s consultants and advisors.

Factors

that could cause actual results to differ materially from such forward-looking information include, but are not limited to, the uncertainty

inherent in Mineral Resource estimates, including that Inferred Mineral Resources are subject to a high degree of uncertainty and may

not be upgraded to Indicated or Measured Mineral Resources, and that Mineral Resources that are not Mineral Reserves do not have demonstrated

economic viability; the reliability of historical data, including assays completed by a laboratory that was not independent and was not

accredited for exploration grade analyses; risks associated with historical mining, including mined-out voids and areas depleted or sterilized

by mining; fluctuations in copper, nickel and cobalt prices; fluctuations in currency exchange rates; changes in metallurgical recoveries,

payabilities and capital and operating costs from those assumed, including the risk that the two-concentrate scenario cannot be achieved

at commercial scale; the preliminary nature of drilling, geophysical and metallurgical results and of current geological interpretations,

including that further drilling may not confirm a connection between Selebi North and Selebi Main, the presence of an intrusive keel

or the continuity of mineralization; the ability of exploration results to predict mineralization; the risk that the Company will not

be able to expand or enhance its current Mineral Resource estimates; the ability of the Company to implement its drilling, geoscience

and metallurgical work and work plans generally; risks relating to the additional time needed for the Selebi PEA; including the risk

that no viable restart option is identified or that any restart option requires significant capital, permitting or time; prefeasibility

or the feasibility of mine production; the risk that the Project Funding Review may not result in a transaction on favourable terms to

the Company or at all; the risk that the Selkirk PEA may not be completed when anticipated or may not produce favourable results; delays

in, or the inability to file, the Technical Report within the required time; delays in obtaining or failures to obtain required governmental,

environmental or other project approvals; title risks; political, regulatory, fiscal and economic risks associated with operating in

Botswana, including changes to royalty and tax regimes; dependence on key personnel, consultants and advisors; the Company’s ability

to maintain its listings on the TSX Venture Exchange and the Nasdaq Stock Market; uncertainties relating to the availability and costs

of financing needed in the future; changes in equity markets; inflation; delays in the development of projects; the other risks involved

in the mineral exploration and development industry; and those risks set out in the Company’s filings with the SEC on EDGAR (www.sec.gov)

and in Canada on SEDAR+ (www.sedarplus.ca), in each case, under the Company’s issuer profile. Although the Company believes

that the assumptions and factors used in preparing the forward-looking information in this news release are reasonable, undue reliance

should not be placed on such information, which only applies as of the date of this news release, and no assurance can be given that

such events will occur in the disclosed time frames or at all. The Company disclaims any intention or obligation to update or revise

any forward-looking information, whether as a result of new information, future events or otherwise, other than as required by law.

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