PNPN.V · 2025-09-22 12:00:00

Power Metallic Reports High Grade Assays and Provides Summer Update 22.66 meters of 4.57% CuEq, including 6.05 meters of 9.70% CuEq in Hole 020, and 28.0 meters of 4.28% CuEq, including 3.4 meters of 15.45% CuEq in Hole 015

Drill Results

Power Metallic Reports High Grade Assays and Provides

Summer Update

22.66 meters of 4.57% CuEq, including 6.05 meters of 9.70% CuEq in Hole 020, and

28.0 meters of 4.28% CuEq, including 3.4 meters of 15.45% CuEq in Hole 015

TORONTO

Sept. 22, 2025

/CNW/ -

Power Metallic Mines Inc

(the

"Company"

"Power Metallic"

)

(TSXV: PNPN) (OTCBB:

PNPNF) (Frankfurt: IVV) is pleased to announce the completion of the summer drill program and the return of five (5) holes from the

2025 drill campaign focused on the Lion Zon. The summer program included the drilling of 34 holes for a total of 17,250 meters

drilled. Three (3) holes were in progress when the drilling season ended due to Moose Break on

September 15

. Of the 34 holes, 13

holes were surveyed with Bore Hole Electromagnetic (BHEM). Summer program drilling focus areas can be seen over the entirety of

Power Metallic's land package (Figure 1 Land package overlain on basin geology with summer program drill locations). Table 1 lays

out the summer program target zones, hole identified, depth and BEHM survey status.

Figure 1: Land package overlain on basin geology with Summer program drill locations (CNW Group/Power Metallic Mines Inc.)

Table 1: Summer drill program including target zone, hole identifier, depth and BEHM status (CNW Group/Power Metallic Mines Inc.)

Power Metallic is pleased to announce the return of five (5) holes from the spring 2025 drilling campaign focused on the Lion Zone.

The five holes were testing plunge extension (PML-25-014) and conducting in-fill drilling to approximately

50m

centres for future

mineral resource estimations (PML-25-015, PML-25-016A, PML-25-018, PML-25-020) (Figure 2).

Figure 2: Lion Area long-section with drill hole locations reported in this news release. (CNW Group/Power Metallic Mines Inc.)

The Summer drill campaign targeted several different prospective areas with total meters drilled of approximately 17,250 meters.

This included:

• Lion Extensional Drilling

3,929 meters

• Lion In-fill drilling for future Mineral Resource Estimation

5,845 meters

• Tiger Area drilling

2,067 meters

• Nisk Deposit Drilling

3,575 meters

• Regional Exploration drilling (new Li-FT acquisition ground)

1,833 meters

The initial Summer 2025 drill plan had proposed to complete extension holes following the Lion Zone plunge. One of the extension

holes results is included in this news release (PML-25-014) and results for subsequent extension holes are pending. To facilitate this

drilling in the Lion area required crossing streams and marshes to make it accessible to overland haulage of drill equipment.

Environmental assessment was carried out and recommendations were to create a drill mat road (Figure 3) with bridged stream

crossings to make the Lion area accessible to more powerful skid mounted drills. This change has allowed the extensional drilling at

Lion to resume and Power Metallic expects much better extensional drilling productivity from the larger drills as we move into the fall

campaign. The drill roads also provide guaranteed access to the Lion area all year round with no need to stop for seasonal changes.

Figure 3: New drill road construction to access the Lion area all year round. (CNW Group/Power Metallic Mines Inc.)

There are no assay results yet from drilling the Tiger area, which includes extensional exploration holes between the Lion and Tiger

zones. All the Tiger area holes as well as the Lion Extensional holes, the Nisk deposit holes, and the regional exploration holes

received bore hole EM surveys.

One of the heli-portable drills has now been re-assigned to drilling airborne EM anomalies developed from our recently completed

VTEM property wide survey (regional exploration holes). This survey resulted in many conductors which are being prioritised for

drilling based on our summer reconnaissance mapping and prospecting program that was designed to identify favourable geology for

polymetallic deposits. All holes to date have hit sulphide bearing structures, verifying the BHEM conductors. Assay results from this

exploration drill program are pending.

LION ZONE DRILL RESULTS (Table 1)

The one (1) completed plunge extension zone (PML-025-014) intersected the Lion deposit approximately

100m

west and

175m

down

plunge from the nearest known drill hole. The high grade portion of the Lion zone was not intersected and the disseminated zone

returned a

9.44m

intersection of 1.10% CuEq

In-fill drilling for future mineral resource estimation confirmed the continuity of the Lion Zone (Figure 1) in all holes, but also highlighted

the previously interpreted high variability of grade and thickness. As example, holes PML-25-015, 018 and 020 (Figure 4) confirmed

and improved grade and thickness from previous surrounding holes, PML-25-016a was narrower and lower grade than surrounding

holes. The in-fill drilling will greatly increase our confidence in modelling of the Lion zone for future resource estimation.

Drill results from the lab has been slowed by high demand from the mining industry this summer. We are still awaiting results from

holes PML-25-017 and PML-25-019 and these will be reported when results are available. The summer program has now shut down

for a few weeks over the Cree moose hunt season (the "Moose Break"), and will start up again in a couple of weeks. Pending holes

at Lion include up to PML-25-034a, as well as additional holes at the Nisk deposit, exploration drilling between Lion and Tiger, and six

(6) exploration holes completed on VTEM anomalies.

Figure 4: Core photo of a portion of the high-grade mineralization in drill hole PML-25-020 (CNW Group/Power Metallic Mines Inc.)

Table 2: Significant assay results Spring 2025 - Lion zone

Hole

From

Length

CuEq Rec*

(m)

(g/t)

( g/t )

( %)

(g/t)

( g/t )

( %)

PML-25-014

464.00

466.00

2.00

0.04

1.57

0.30

0.41

0.30

1.46

and

590.17

595.25

9.44

0.28

5.98

0.39

1.02

0.09

0.03

1.01

Including

593.17

595.25

2.08

0.67

14.18

1.08

2.29

0.03

0.04

2.36

PML-25-015

162.00

190.00

28.00

0.56

25.18

2.87

2.86

0.35

0.13

4.28

Including

176.00

177.90

1.90

2.83

45.78

13.60

8.14

0.50

0.16

17.68

and

186.60

190.00

3.40

0.69

84.37

9.79

15.12

2.16

0.22

15.45

PML-25-016a

292.20

302.30

7.10

0.07

2.06

0.31

1.01

1.13

0.20

1.41

PML-25-018

479.00

508.50

29.50

0.15

4.96

0.54

1.80

0.58

0.09

1.58

Including

488.16

495.00

6.84

0.20

11.41

0.83

4.54

1.79

0.12

3.30

PML-25-020

241.10

262.86

21.76

0.24

4.67

0.10

1.61

1.09

0.01

1.19

Including

252.86

255.86

3.00

0.92

12.50

0.32

6.68

4.80

0.02

4.81

and

280.84

303.50

22.66

0.78

7.63

3.04

2.79

0.70

0.16

4.57

Including

286.15

292.20

6.05

1.03

9.65

6.11

8.33

1.75

0.27

9.70

Note: Reported length is downhole distance; true width based on model projections is estimated as 85% of downhole length

Copper Equivalent Rec Calculation (CUEqRec

)

CuEqRec represents CuEq calculated based on the following metal prices (USD) : 2,360.15 $/oz Au, 27.98 $/oz Ag, 1,215.00 $/oz

Pd, 1000.00 $/oz Pt, 4.00 $/lb Cu, 10.00 $/lb Ni and 22.50 $/lb Co., and a recovery grade of 80% for all commodities, consistent

with comparable peers.

Previously released drill results are available in a public database accessible as a download on Power Metallic's website. Currently

this database contains hole assay and collar information up to hole PML-25-013 and will be updated as soon as possible with all

remaining publicly released holes.

FALL AND WINTER PROGRAM UPDATE

September 3

, 2025 the Government of

Quebec

published in the No. 36 Gazette Officielle du Québec on expanded mining rights

within close proximity to our Lion Zone discovery. The process gives previous claims holders any land from their portfolio that had

been restricted previously by Hydro-

Quebec

. That land addition can be seen in the figure 5 below.

Figure 5: Land package overlain on basin geology with summer program drill locations (CNW Group/Power Metallic Mines Inc.)

Additional land was open to public bidding and Power Metallic bid and is waiting on the results of the bid which is anticipated to be

registered in the next 30-90 days with the extension lands shown in Figure 5. Additionally, a detailed summary of the Fall-Winter

program is planned to be released by the end of October sharing more details on BHEM results, land changes and drilling program

plans over the fall and winter periods.

"We were very excited to get this ground. Honestly as important as our drilling program was this summer, I can sincerely say our

primary mission was to get more land. The Lift Package and the lifting of the Hydro Quebec restriction will really benefit the projects

development. Power Metallic approached our friends and partner the James Bay Cree for their assistance in lobbying Hydro-

Quebec

to remove these restrictions on land that clearly was no longer required. With their assistance and the understanding and cooperation

of Hydro-

Quebec

we were able to have the land referred to the ministry for the process that has now occurred. We will have further

comments on this when the full process is complete" commented Terry Lynch Power Metallic CEO

Qualified Person

Joseph Campbell

, P.Geo, VP Exploration at Power Metallic, is the qualified person who has reviewed and approved the technical

disclosure contained in this news release.

About Power Metallic Mines Inc.

Power Metallic is a Canadian exploration company focused on advancing the Nisk Project Area (Nisk–Lion–Tiger)—a high–grade

Copper–PGE, Nickel, gold and silver system—toward Canada's next polymetallic mine.

1 February 2021

, Power Metallic (then Chilean Metals) secured an option to earn up to 80% of the Nisk project from Critical

Elements Lithium Corp. (TSX–V: CRE). Following the

June 2025

purchase of 313 adjoining claims (~167 km²) from Li–FT Power, the

Company now controls ~212.86 km² and roughly 50 km of prospective basin margins.

Power Metallic is expanding mineralization at the Nisk and Lion discovery zones, evaluating the Tiger target, and exploring the

enlarged land package through successive drill programs.

Beyond the Nisk Project Area, Power Metallic indirectly has an interest in significant land packages in

British Columbia

and

Chile

, by

its 50% share ownership position in Chilean Metals Inc., which were spun out from Power Metallic via a plan of arrangement on

February 3, 2025

It also owns 100% of Power Metallic Arabia which owns 100% interest in the Jabul Baudan exploration license in The Kingdon of

Saudi Arabia's

JabalSaid Belt. The property encompasses over 200 square kilometres in an area recognized for its high prospectivity

for copper gold and zinc mineralization. The region is known for its massive volcanic sulfide (VMS) deposits, including the world-class

Jabal Sayid

mine and the promising Umm and Damad deposit.

For further information, readers are encouraged to contact:

Power Metallic Mines Inc.

The Canadian Venture Building

82 Richmond St East, Suite 202

Toronto, ON

Neither the TSX Venture Exchange nor its Regulation Services Provider accepts responsibility for the adequacy or accuracy of this

release.

QAQC and Sampling

GeoVector Management Inc ("GeoVector") is the Consulting company retained to perform the actual drilling program, which includes

core logging and sampling of the drill core.

All samples were submitted to and analyzed at Activation Laboratories Ltd ("Actlabs"), an independent commercial laboratory for

both the sample preparation and assaying. Actlabs is a commercial laboratory independent of Power Metallic with no interest in the

Project. Actlabs is an ISO 9001 and 17025 certified and accredited laboratories. Samples submitted through Actlabs are run through

standard preparation methods and analysed using RX-1 (Dry, crush (< 7 kg) up to 80% passing 2 mm, riffle split (250 g) and

pulverize (mild steel) to 95% passing 105 μm) preparation methods, and using 1F2 (ICP-OES) and 1C-OES - 4-Acid near total

digestion + Gold-Platinum-Palladium analysis and 8-Peroxide ICP-OES, for regular and over detection limit analysis. Pegmatite

samples are analyzed using UT7 - Li up to 5%, Rb up to 2% method. Actlabs also undertake their own internal coarse and pulp

duplicate analysis to ensure proper sample preparation and equipment calibration.

GeoVector's QAQC program includes regular insertion of CRM standards, duplicates, and blanks into the sample stream with a

stringent review of all results. QAQC and data validation was performed, and no material errors were observed.

Cautionary Note Regarding Forward-Looking Statements

This message contains certain statements that may be deemed "forward-looking statements" concerning the Company within the

meaning of applicable securities laws. Forward-looking statements are statements that are not historical facts and are generally, but

not always, identified by the words "expects," "plans," "anticipates," "believes," "intends," "estimates," "projects," "potential,"

"indicates," "opportunity," "possible" and similar expressions, or that events or conditions "will," "would," "may," "could" or "should"

occur. Although the Company believes the expectations expressed in such forward-looking statements are based on reasonable

assumptions, such statements are not guarantees of future performance, are subject to risks and uncertainties, and actual results or

realities may differ materially from those in the forward-looking statements. Such material risks and uncertainties include, but are not

limited to, among others; the timing for various drilling plans; the ability to raise sufficient capital to fund its obligations under its

property agreements going forward and conduct drilling and exploration; to maintain its mineral tenures and concessions in good

standing; to explore and develop its projects; changes in economic conditions or financial markets; the inherent hazards associates

with mineral exploration and mining operations; future prices of nickel and other metals; changes in general economic conditions;

accuracy of mineral resource and reserve estimates; the potential for new discoveries; the ability of the Company to obtain the

necessary permits and consents required to explore, drill and develop the projects and if accepted, to obtain such licenses and

approvals in a timely fashion relative to the Company's plans and business objectives for the applicable project; the general ability of

the Company to monetize its mineral resources; and changes in environmental and other laws or regulations that could have an

impact on the Company's operations, compliance with environmental laws and regulations, dependence on key management

personnel and general competition in the mining industry.

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For further information:

For further information on Power Metallic Mines Inc., please contact: Duncan Roy, VP Investor Relations,

416-580-3862, [email protected]

CO: Power Metallic Mines Inc.

CNW 09:29e 22-SEP-25

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