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NEXM.V ·

NexMetals Reports 7.55 Metres of 6.48% CuEq (2.70% Cu, 1.83% Ni) in SMD-26-219, Visual Intercept SMD-26-217 Intersects Three Mineralized Zones and Extends High-Grade Trend to Approximately 1.5 Kilometres

Drill Results

NexMetals Reports 7.55 Metres of 6.48% CuEq

(2.70% Cu, 1.83% Ni) in SMD-26-219, Visual

Intercept SMD-26-217 Intersects Three

Mineralized Zones and Extends High-Grade

Trend to Approximately 1.5 Kilometres

Vancouver, British Columbia--(Newsfile Corp. - September 23, 2026) -

NexMetals Mining Corp.

(TSXV: NEXM) (NASDAQ: NEXM)

("

NEXM

" or the "

Company

") is pleased to report assay results

from drill hole SMD-26-219 and a new visual intercept from drill hole SMD-26-217, part of its ongoing

surface drilling program at the Selebi Main deposit in Botswana (see Figure 1). The results continue to

support the Company's data-driven exploration model and highlights the potential for continued growth of

the Selebi Main mineralized system.

SMD-26-219 returned 7.55 metres grading 6.48% CuEq (2.70% Cu and 1.83% Ni), confirming another

thick, high-grade massive sulphide intersection along an emerging high-grade trend that has now been

defined over approximately 1.5 kilometres (the "

High-Grade Trend

").

SMD-26-217 extended the High-Grade Trend by a further 100 metres toward Selebi North and

intersected a combined total of 38.65 metres of disseminated to massive sulphide mineralization across

three zones. The hole represents the deepest significant intercept of mineralization along the trend and

confirmed the Main and Lower Zones, while also, for the first time, intersecting a Third Zone of massive

sulphide mineralization approximately 9 metres below the Lower Zone. Together, the three zones

represent one of the thickest mineralized intervals encountered during the program to date and provide

further evidence that the High-Grade Trend continues laterally through the Flexure Zone toward Selebi

North. Assays are pending.

Why This Matters

Exceptional grades continue to define the High-Grade Trend.

SMD-26-219 returned 7.55

metres grading 6.48% CuEq, building on a series of thick, high-grade intersections and reinforcing

the strength and consistency of mineralization across the growing trend.

The Trend has been extended toward Selebi North.

SMD-26-217 extended the interpreted

High-Grade Trend by approximately 100 metres to approximately 1.5 kilometres.

Lower Zone is demonstrating increasing continuity at depth.

Results from SMD-26-213,

which returned 7.45 metres grading 5.69% CuEq (2.52% Cu, 1.54% Ni), and SMD-26-219,

together with the visual intercept in SMD-26-217, strengthen the interpretation of a laterally and

vertically extensive Lower Zone.

The Third Zone introduces a new dimension to the exploration model.

Its discovery below

the Lower Zone indicates that the system is more complex than previously interpreted and creates

an additional target opportunity for potential expansion.

Widely spaced step-outs are rapidly building potential tonnage.

Continued drilling success

beyond the 2024 Mineral Resource Estimate ("

2024 MRE

") demonstrates the potential for

meaningful resource growth at Selebi Main, both within the upcoming 2026 Mineral Resource

Estimate ("

2026 MRE

") and beyond its cut-off date.

The system remains open and recent BHEM indicates the High-Grade Trend continues.

Borehole electromagnetic surveying ("

BHEM

") indicates that the High-Grade Trend continues

beyond SMD-26-217, supporting further potential laterally and down plunge. Ongoing drilling and

geological modelling will test the extent of all three mineralized zones and target additional areas

of thick massive sulphide mineralization.

Next Steps

The 2026 Mineral Resource Estimate ("

2026 MRE

") remains on track for completion in the third

quarter of 2026.

Drill holes completed after the resource cut-off date of September 21, including

SMD-26-217, will not be included in the 2026 MRE but continue to support the Company's strategy

of expanding the Selebi resource base through ongoing exploration success.

The Company has engaged TECT Geological Consulting to develop an integrated three-

dimensional geological and structural model for Selebi North and Selebi Main. The model is

expected to enhance the Company's understanding of the geological controls of mineralization

across the mining license, support future resource growth and improve drill targeting of thicker,

higher-grade zones, and identify potential regional exploration targets.

Sean Whiteford, CEO and Director of the Company, commented:

"SMD-26-219 delivered another

strong result, with 7.55 metres grading 6.48% CuEq. It is the latest in a series of successful, widely

spaced step-out holes that are rapidly defining additional tonnage at Selebi Main and extending this

High-Grade Trend to approximately 1.5 kilometres.

SMD-26-217 extended the trend by a further 100 metres and, for the first time in this area, intersected a

third zone of massive sulphide mineralization below the Main and Lower Zone. The presence of three

distinct mineralized zones highlights both the complexity of the Selebi Main system and the significant

potential that remains within the deposit and beyond the areas tested to date. BHEM surveying in SMD-

26-217 is complete and results indicate that the lower zone continues to depth.

The 2026 MRE continues to advance, and our Qualified Persons are working diligently to complete it.

The additional time has allowed us to incorporate results from SMD-26-219 that we believe will add

meaningful tonnage and provide a more complete picture of the growth achieved at Selebi Main. We

look forward to sharing the 2026 MRE with the market upon its completion."

Figure 1:

Inclined long section of Selebi Main highlighting the location of drill holes SMD-26-219

and SMD-26-217 relative to the 2024 MRE. The 2024 Inferred Resource reference in Figure 1 is

presented in accordance with NI 43-101, which may not be identical to Inferred Mineral

Resource references under SEC Regulation SK-1300.

To view an enhanced version of this graphic, please visit:

https://images.newsfilecorp.com/files/7759/315566_00238b1064db5859_002full.jpg

Figure 2:

SMD-26-217 Core photos. Complete core photographs for the hole are available on

the Company's website.

To view an enhanced version of this graphic, please visit:

https://images.newsfilecorp.com/files/7759/315566_00238b1064db5859_003full.jpg

Detailed Drilling and BHEM Information

SMD-26-219, completed to 1956.8 metres, was planned as a step-out hole in the direction of Selebi

North and tested the down-plunge extension of the interpreted trend of thick high grade massive sulphide

mineralization. The hole intercepted Main Zone mineralization between 1858.50 to 1878.00 metres. The

19.50-metre-wide zone was dominated by disseminated sulphides including a total of 2.15 metres of

massive sulphide in two narrow intervals. The drillhole intercepted the Lower Zone between 1903.25 and

1916.75 metres. Within this 13.50 metre zone, is a 7.55 metre interval dominated by semi-massive and

massive sulphides. Mineralization at SMD-26-219 is very similar to that seen in SMD-26-213 175

metres away (7.45 m of 2.52% Cu, 1.54% Ni,

news release July 22, 2026

) and in the recently completed

SMD-26-217 step out hole located 100 metres toward Selebi North

SMD-26-217 was planned to be another down plunge step out hole, testing along the High-Grade Trend.

The hole was completed to a final depth of 2050.9 metres. SMD-26-217 drilled three distinct zones of

mineralization separated by short intervals of country rock between 1920.30 metres and 2000.90

metres.

Main Zone

-

(1920.30 metres - 1941.15 metres):

Spans a total mineralized interval of 20.85

metres.

The zone is dominated by 19.90m of weakly mineralised medium to coarse grained

amphibolite shist. Two sub-metre intervals, 0.80 meters and 0.15 meters, of massive sulphide

occur in the middle of the zone.

Lower Zone - (1974.75 metres - 1981.35 metres):

Intersected a combined total of 5

.00 metres

of massive sulphides and 1.60 metres of disseminated

sulphides, containing abundant

pyrrhotite, chalcopyrite, and magnetite crystals.

Third Zone - (1994.30 metres - 2000.90 metres):

At 8.65 metres below the Lower Zone the drill

discovered a new mineralized horizon, featuring 2.30 metres of disseminated to semi-massive

mineralized amphibolite directly underlain by

4.30 metres of massive sulphide

comprised of

pyrrhotite and chalcopyrite.

SMD-26-217 has not only extended the footprint of mineralisation by 100 metres, but it has also showed

the mineralization thickening down plunge. The third zone discovery shows that the Selebi Main deposit

continues to dramatically change with each new drill hole highlighting the potential in the flexure zone

between Selebi Main and Selebi North (Figure 2).

Figure 2:

Inclined long section of Selebi Main and Selebi North Deposits highlighting the

location of drill holes released in this news release, and 2025-2026 drilling to the 2024 MRE and

the expansion of the Flexure Zone. The 2024 Indicated and Inferred Mineral Resources

referenced in Figure 2 is presented in accordance with NI 43-101, which may not be identical to

Inferred Mineral Resource references under SEC Regulation SK-1300.

To view an enhanced version of this graphic, please visit:

https://images.newsfilecorp.com/files/7759/315566_00238b1064db5859_004full.jpg

Table 1: 2026 Surface Drilling Results

Hole-ID

From

(m)

To

(m)

Length

(m)

Est. True

Thickness

1

Cu

(%)

Ni

(%)

Co

(%)

2

Zone

CuEq

(%)

3

SMD-26-219

1858.50

1878.00

19.50

18.8

0.47

0.49

0.02

Main Zone

1.48

including

1861.20

1868.00

6.80

6.55

0.67

0.89

0.04

Main Zone

2.51

*including

1681.20

1862.80

1.60

1.55

1.53

2.51

0.11

Main Zone

6.70

*and

1864.20

1864.75

0.55

0.53

0.06

2.57

0.10

Main Zone

5.36

SMD-26-219

1903.25

1916.75

13.50

13.30

1.69

1.22

0.05

Lower Zone

4.21

including

1909.20

1916.75

7.55

7.45

2.70

1.83

0.09

Lower Zone

6.48

*including

1910.15

1916.75

6.60

6.50

2.01

2.02

0.09

Lower Zone

6.17

*including

1910.15

1912.75

2.60

2.55

1.81

2.10

0.10

Lower Zone

6.14

*and

1913.25

1916.75

3.50

3.45

2.43

2.23

0.10

Lower Zone

7.02

SMD-26-217

1920.30

1941.15

20.85

20.55

Ap

4

Ap

4

Ap

4

Main Zone

Ap

4

including

1931.85

1932.65

0.80

0.79

Ap

4

Ap

4

Ap

4

Main Zone

Ap

4

SMD-26-217

1974.75

1981.35

6.60

6.40

Ap

4

Ap

4

Ap

4

Lower Zone

Ap

4

including

1974.25

1979.00

4.25

4.17

Ap

4

Ap

4

Ap

4

Lower Zone

Ap

4

and

1980.35

1981.35

1.00

0.98

Ap

4

Ap

4

Ap

4

Lower Zone

Ap

4

SMD-26-217

1994.30

2000.90

6.60

6.40

Ap

4

Ap

4

Ap

4

Third Zone

Ap

4

including

1996.60

2000.90

4.30

4.17

Ap

4

Ap

4

Ap

4

Third Zone

Ap

4

1

Length refers to drillhole length and not true width. True widths are estimated where density of drilling is sufficient for an estimation. Some true widths

cannot be estimated due to insufficient drill density.

2

Co is not included in the MRE as cobalt analyses are not consistently available throughout the deposit.

3

CuEq was calculated using the formula CuEq=Cu+2.06*Ni assuming long-term prices of US$10.50/lb Ni and US$4.75/lb Cu, and nickel and copper

recoveries of 72.0% and 92.4%, respectively, derived from metallurgical studies which consider a conceptual bulk concentrate scenario.

4

Assays pending

Table 2: Surface Drilling Collar Information

HOLE ID

UTM East

UTM North

Elevation

Dip

True North

Azimuth

Hole Length

(m)

Comment

SMD-26-219

582,670.0

7,564,013.4

916.2

-75.1

111.0

1956.8

Approximate

collar position

SMD-26-217

582,547.6

7,564,008.4

919.3

-74

93

2050.9

Surveyed collar

Qualified Person

All scientific and technical information in this news release has been reviewed and approved by Sharon

Taylor, V.P. Exploration of the Company, MSc, P.Geo, and a "qualified person" for the purposes of

National Instrument 43-101 and Subpart 1300 of Regulation S-K.

Quality Control and Data Verification

The program is being executed using three company-owned underground Zinex U5 drills which were

converted into surface A5 drills, and two Marcotte HTM2500 drills purchased by the Company capable

of drilling to depths of 2,550 metres (NQ core).

Drill core samples are either NQ (47.75 mm diameter) or BQ (36.40 mm diameter).

All samples are ½

core samples cut by a diamond saw on site and the remaining half of the core is retained for reference

purposes. Samples are generally 1.0 to 1.5 metre intervals or less at the discretion of the site geologists.

Sample preparation and lab analysis was completed at ALS Geochemistry in Johannesburg, South

Africa. Commercially prepared Blank samples and certified Cu/Ni sulphide analytical control standards

with a range of grades are inserted in every batch of 20 samples or a minimum of one set per sample

batch. Analyses for Ni, Cu and Co are completed using a peroxide fusion preparation and ICP-AES

finish (ME-ICP81). Analyses for Pt, Pd, and Au are by fire assay (30 grams nominal sample weight) with

an ICP-AES finish (PGM-ICP23).

Holes are numbered as follows: SMD (Selebi Main Deposit) + year + hole number starting at 201.

The Qualified Person has verified the data through contribution to the core handling and sampling

procedures, visits to the drill and core processing facilities, monitoring of core logging results and

sample selection, review of core assay and QAQC results.

BHEM Surveys

The BHEM surveys at Selebi utilize the Crone PEM system operated by local Botswana staff. Survey

data is collected using a 3-component fluxgate probe collecting full waveform data. Surveys have been

collected using timebases between 50 and 1000ms (0.25 Hz to 5 Hz). The data has been processed to

a calculated residual step response to better quantify the conductive sources. This added processing

has proven to be highly valuable because of the size of the highly conductive mineralized system.

Technical Report

The 2024 MRE on the Selebi Mines is supported by the technical report entitled "Technical Report,

Selebi Mines, Central District, Republic of Botswana" dated September 20, 2024 (with an effective date

of June 30, 2024) (the "

Selebi Technical Report

"), and the technical report summary entitled "S-K

1300 Technical Report Summary Selebi Mines, Central District, Republic of Botswana, Premium

Resources Ltd." dated December 17, 2024 (with an effective date of June 30, 2024) (the "

Selebi

Technical Report Summary

"), each prepared by SLR Consulting (Canada) Ltd. for NEXM. Reference

should be made to the full text of the Selebi Technical Report, which was prepared in accordance with NI

43-101 and is available on SEDAR+ (

www.sedarplus.ca

) and the Selebi Technical Report Summary,

which was prepared in accordance with Subpart 1300 of Regulation S-K and is available in the

Company's Annual Report on Form 10-K for the fiscal year ended December 31, 2025 filed with the U.S.

Securities and Exchange Commission on EDGAR (

www.sec.gov

), in each case, under NEXM's issuer

profile.

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. 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

[email protected]

1-866-794-NEXM (6396)

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.

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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

implementation of the objectives, goals and future plans of the Company, including the expansion

potential of the Selebi Main system and the scale and continuity thereof; the expansion potential

within the Flexure Zone and the Company's interpretation that the Flexure Zone has significant

potential for resource growth beyond the 2024 MRE; the receipt of pending assay results and the

timing and results thereof; the Company's belief that the combination of massive, semi-massive and

disseminated sulphides indicates a strong sulphide system with potential for scale, particularly when

integrated with ongoing BHEM targeting; the expected timing of completion of the 2026 MRE; the

Company's belief in the benefits of its data-driven exploration approach; the anticipated benefits of

TECT Geological Consulting's model, including enhancement of the Company's understanding of the

geological controls of mineralization across the mining license, support for future resource growth and

improvement of drill targeting of thicker, higher-grade zones, and the identification of potential

regional exploration targets; the Company's belief that recent step-out drilling will add meaningful

tonnage to the 2026 MRE and provide a more complete picture of the growth achieved at Selebi

Main; the planned completion and use of BHEM surveying around SMD-26-217 to further test the

lateral and down-plunge extent of Selebi Main; the identification of the Third Zone as an additional

target for follow-up drilling and the potential for its lateral and down-plunge expansion; the Company's

plans for ongoing drilling, geological modelling and BHEM to evaluate the extent of all three

mineralized zones and identify further areas of thick massive sulphide mineralization; the High-Grade

Trend extending to approximately 1.5 kilometres and the Company's plans to test its continued extent

through ongoing drilling and BHEM targeting; the expectation that the Selebi Main system has

continued to grow beyond the resource currently being modelled in the 2026 MRE; and future

resource modelling and potential mine planning. 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. Factors that could cause actual results to differ materially from

such forward-looking information include, but are not limited to, capital and operating costs varying

significantly from estimates; the preliminary nature of drilling and metallurgical test results; the ability

of exploration results to predict mineralization; the ability of the Company to implement its drilling,

geoscience and metallurgical work on its properties and work plans generally; prefeasibility or the

feasibility of mine production; delays in obtaining or failures to obtain required governmental,

environmental or other project approvals; uncertainties relating to the availability and costs of

financing needed in the future; changes in equity markets; inflation; fluctuations in commodity prices;

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 public disclosure record on SEDAR+ (

www.sedarplus.ca

), in each case, under

NEXM'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.

To view the source version of this press release, please visit

https://www.newsfilecorp.com/release/315566