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Northisle Intercepts 96m Grading 1.42g/t Au Eq. and 87m Grading 1.46g/t Au Eq. at Northwest Expo Demonstrating Continuity of Gold Rich Zone

Drill Results Marketing Announcement

Northisle Copper and Gold Inc. | 1200 – 1166 Alberni St. | Vancouver, BC | V6E 3Z3

www.northisle.ca | [email protected]

January 17, 2024

TSX Venture Exchange Symbol: NCX

Northisle Intercepts 96m Grading 1.42g/t Au Eq. and 87m Grading 1.46g/t Au Eq. at

Northwest Expo Demonstrating Continuity of Gold Rich Zone

Highlights:

• Initial Phase 3 drill results at Northwest Expo Zone 1 intercepted wide intervals of gold-enriched mineralization

adjacent to high grade interval in NW23-13

o NW23-20 includes 87m grading 1.46g/t Au Eq. and 37m grading 1.14g/t Au Eq.

o NW23-21 includes 96m grading 1.42g/t Au Eq.

• Intercepts were targeted near NW23-13 in order to demonstrate continuity of the higher grade in this area and

are among the best intervals on a length times grade basis within Northwest Expo Zone 1

Vancouver, B.C. – Northisle Copper and Gold Inc. (TSX-V: NCX) (“Northisle” or the “Company”) is pleased to announce

the first batch of drill results from its 2023 Phase 3 program at Northwest Expo which demonstrate continuity of the gold

rich Zone 1 in Northwest Expo.

Sam Lee, President & CEO of Northisle stated “Today’s drill results continue to affirm the continuity of this high priority

area within the gold enriched Zone 1 at Northwest Expo. We are nearing completion of delivering final drill results,

metallurgical testing and an initial resource at Northwest Expo Zone 1 in addition to initiating our fully financed 2024 Phase

1 drill program during the first quarter this year. This is a strong start to what we believe will be a transformational year

at Northisle as we progress our district-scale opportunity for critical metals.”

Summary of Additional Northwest Expo 2023 Drill Results

Table 1 below summarizes key highlights released today from the Northwest Expo 2023 drill program, including significant

intercepts from NW23 -20 and NW23 -21, which show continuity of mineralization east and west of NW23 -13, which

previously intersected 130m grading 2.13g/t Au Eq.

Table 1: Newly Released Northwest Expo Significant 2023 Intercepts

Hole ID From

(m)

To (m) Interval

(m)

True

Width (m)

Au Grade

(g/t)

Cu Grade

(%)

Mo Grade

(%)

Re Grade

(g/t)

Au Eq.

Grade (g/t)

Cu Eq.

Grade (%)

NW23-20 225.0 312.0 87.0 87.0 1.12 0.24 0.003 0.05 1.46 1.08

and 318.0 355.0 37.0 37.0 0.93 0.14 0.004 0.10 1.14 0.84

NW23-21 207.0 303.0 96.0 96.0 1.15 0.17 0.007 0.20 1.42 1.05

Copper and gold equivalent calculations based on the following metal prices which were used in the Company’s 2021 PEA on the North Island Project:

Cu = US$3.25/lb, Au = US$1,650/oz, Mo = US$10/lb, Re = $1,256/kg. Calculations assume 100% recovery; totals may not add due t o rounding.

Note on equivalent calculation:

Copper equivalent is determined by calculating total contained metal value/ tonne, dividing by the copper price, and then div iding the resultant number of pounds of

copper by 2204.6. Gold equivalent is determined by calculating total contained metal value/tonne, dividing by the gold price, and then multiplying the resultant number

of troy ounces of gold by 31.103. Analyzed metal equivalent calculations are reported for illustrative purposes only. The met al chosen for reporting on an equivalent

basis is the one that contributes the most dollar value after accounting for assumed recoveries, which is expected to be gold for Northwes t Expo and copper for the

overall North Island project.

NW23-19 was drilled 300 meters to the southeast of NW23-20 and provided important vectoring information indicating

movement from the advanced argillic alteration characteristic of the lithocap domain of this porphyry system into the

quartz-sericite-pyrite (QSP) alteration characteristic of the periphery of the causative porphyry centre, although did not

have economically significant grade. Figures 1 and 4 show the location of the drill holes in context with previous drilling

at the Northwest Expo target.

Key Catalysts

The Company has a number of important catalysts over the next several months which it believes will continue to establish

the North Island Project as one of the best new mining camps in the world. These include the following:

Northisle Copper and Gold Inc. | 1200 – 1166 Alberni St. | Vancouver, BC | V6E 3Z3

www.northisle.ca | [email protected]

• Q1 2024 - Geophysics results from Northwest Expo and West Goodspeed

• Q1 2024 – Final 2023 Drill Results

• Q1 2024 - Inaugural Northwest Expo Zone 1 resource estimate including Phase 3 Drilling

• Q1 2024 - Metallurgical testing results from Northwest Expo Zone 1

• Q2 2024 - Target commencement of 2024 drilling program

• Ongoing - Continued progress on relationships with indigenous rightsholders and local stakeholders

Upcoming Investor Events

During first quarter, the Company will be very active in reaching out to new and existing investors via virtual and in-

person channels. Northisle will be attending several external investor events including the following events during

January:

• January 21 - 22: Booth 203 @ Vancouver Resource Investor Conference (VRIC), Vancouver

• Northisle Presentation 2:00PM PST January 21, 2024 in Workshop #3

• January 22 - 25: Booth 1118 @ AME Roundup, Vancouver – Including CORE SHACK (Booth 924)

• Northisle Presentations include: Agentis Technical Session (January 22, 2024 @ 10:00AM PST in Room 7,

VCC East), BCRMA Session (January 23, 2024 @ 10:00AM PST in Room 17, VCC), and the BC, Yukon and

Alaska Technical Session (January 25, 2024 @ 9:00AM PST in Ballroom A)

• January 23 - 25: TD Securities Global Mining Conference, Toronto

• Northisle Presentation 3:25PM EST January 23, 2024 in Room 28 – TD Tower 10th Floor

Details of Drilling Results

Phase 3 of the 2023 Northwest Expo drilling program is comprised of eight drill holes as shown highlighted in yellow in

Table 2, and is also shown in Figures 1 and 4. Six of the drill holes are in Zone 1 where Northisle anticipates completing a

resource estimate during Q1 2024.

Figure 1: Northwest Expo Zone 1

Northisle Copper and Gold Inc. | 1200 – 1166 Alberni St. | Vancouver, BC | V6E 3Z3

www.northisle.ca | [email protected]

Table 2: Northwest Expo Selected Collar Data (Datum NAD83 Zone 9)

Hole ID UTM_N UTM_E Elevation

(m)

Azimuth

(deg)

Dip

(deg)

Length

(m)

EC-218 569541 5619468 417 206 -60 462.4

EC-228 569465 5619327 396 205 -56 235.6

EC-229 569379 5619604 427 270 -47 199.6

EC-233 569537 5619467 428 230 -55 688.9

EC-234 569543 5619468 428 180 -55 627.9

EC-245 569318 5619368 422 200 -70 351.7

EC08-248 569172 5619689 468 272 -87 593.5

EC08-250 569172 5619689 468 272 -64 581.3

EC08-252 569353 5619463 434 275 -87 488.2

EC08-254 569352 5619463 434 279 -66 474.7

EC-223 569654 5619210 290 230 -60 262.1

NW21-03 5619449.81 569587.90 405.39 206 -60 571.5

NW21-04 5619451.46 569588.47 405.55 150 -60 510.0

NW21-05 5619457.04 569590.23 405.94 70 -50 451.0

NW21-06 5619692.45 570032.16 255.50 170 -60 132.0

NW21-07 5619692.44 570032.17 255.50 170 -60 330.3

NW21-08 5619714.21 570055.39 258.42 170 -70 552.2

NW23-09 5619599.71 569223.92 452.78 180 -50 597

NW23-10 5619600.43 569223.93 452.82 180 -89 549

NW23-11 5619449.70 569345.87 433.12 180 -50 471

NW23-12 5619450.50 569345.82 433.10 180 -85 500

NW23-13 5619405.31 569450.73 423.78 180 -50 489

NW23-14 5619406.14 569450.77 423.84 180 -85 570

NW23-15 5619472.36 569550.25 408.53 180 -85 600

NW23-16 5619377.27 568919.16 448.80 175 -60 405

NW23-17 5619602.09 569223.18 452.87 245 -70 393

NW23-18 5619452.70 569585.50 405.57 160 -60 450

NW23-19 5619031.60 570036.72 198.36 180 -75 342

NW23-20 5619411.10 569502.59 417.88 180 -50 453

NW23-21 5619415.18 569406.13 428.63 180 -60 426

NW23-22 5619123.07 570120.15 199.28 0 -90 441

NW23-23 5619412.10 569502.57 417.93 180 -85 453

NW23-24 5619463.28 569302.71 428.81 180 -50 450

NW23-25 5619645.52 569134.49 442.27 180 -50 405

NW23-26 5619770.53 569000.31 467.92 180 -50 621

NW23-21 on Section 569400E (See Figure s 1, 2 and 4) was drilled 50 metres east and parallel with NW23 -13 which was

previously reported:

https://www.northisle.ca/news/northisle-intersects-130m-grading-1-65g-t-au-and-0-33-cu-including-72m-grading-2-

22g-t-au-and-0-41-cu-and-15m-grading-3-42g-t-and-1-15-cu-at-northwest-expo/

All 2023 drill results from Northwest Expo are summarized in Table 3.

Northisle Copper and Gold Inc. | 1200 – 1166 Alberni St. | Vancouver, BC | V6E 3Z3

www.northisle.ca | [email protected]

Table 3: Northwest Expo Significant 2023 Intercepts

Hole ID From

(m)

To (m) Interval

(m)

True

Width (m)

Au Grade

(g/t)

Cu Grade

(%)

Mo Grade

(%)

Re Grade

(g/t)

Au Eq.

Grade (g/t)

Cu Eq.

Grade (%)

NW23-09 267.0 303.0 36.0 34.0 1.36 0.20 0.001 0.05 1.64 1.21

and 343.3 373.0 29.7 28.0 0.91 0.10 0.001 0.02 1.05 0.78

NW23-11 219.0 283.6 64.5 57.4 0.94 0.19 0.002 0.03 1.21 0.89

NW23-12 304.0 416.7 112.7 100.3 0.75 0.11 0.008 0.05 0.94 0.70

NW23-13 208.0 338.0 130.0 130.0 1.65 0.33 0.006 0.16 2.13 1.58

Including 266.0 338.0 72.0 72.0 2.22 0.41 0.003 0.15 2.79 2.07

Including 323.0 338.0 15.0 15.0 3.42 1.15 0.008 0.33 5.01 3.71

NW23-14 333.0 432.0 99.0 90.0 0.39 0.08 0.015 0.44 0.57 0.42

NW23-17 271.0 337.0 66.0 64.0 0.64 0.11 0.013 0.56 0.86 0.64

NW23-18 357.0 431.5 74.5 74.5 0.19 0.05 0.020 0.79 0.36 0.27

NW23-20 225.0 312.0 87.0 87.0 1.12 0.24 0.003 0.05 1.46 1.08

and 318.0 355.0 37.0 37.0 0.93 0.14 0.004 0.10 1.14 0.84

NW23-21 207.0 303.0 96.0 96.0 1.15 0.17 0.007 0.20 1.42 1.05

Bolded / Shaded results are new in the current press release.

Copper and gold equivalent calculations based on the following metal prices which were used in the Company’s 2021 PEA on the North Island Project:

Cu = US$3.25/lb, Au = US$1,650/oz, Mo = US$10/lb, Re = $1,256/kg. Calculations assume 100% recovery; totals may not add due t o rounding.

Note on equivalent calculation:

Copper equivalent is determined by calculating total contained metal value/ tonne, dividing by the copper price, and then div iding the resultant number of pounds of

copper by 2204.6. Gold equivalent is determined by calculating total contained metal value/tonne, dividing by the gold price, and then multiplying the resultant number

of troy ounces of gold by 31.103. Analyzed metal equivalent calculations are reported for illustrative purposes only. The met al chosen for reporting on an equivalent

basis is the one that contributes the most dollar value after accounting for assumed recoveries, which is expected to be gold for Northwes t Expo and copper for the

overall North Island project.

Figure 2: Section 569400E

Northisle Copper and Gold Inc. | 1200 – 1166 Alberni St. | Vancouver, BC | V6E 3Z3

www.northisle.ca | [email protected]

NW23-21 shows good continuity 50 metres west of NW23-13 and with holes EC-228 and EC-233 up and down dip,

respectively, where they enter and exit into the section envelope of 25 metres either side of Section 569400E.

Similarly, drill Hole NW23-20 on Section 569500E (See Figures 1, 3 and 4) also shows good continuity 50 metres to the

east of NW23-13 as well as downdip with NW21-03 which was the hole which focused attention on this target in 2021.

The assays of NW23-22 through NW23-26 will be reported upon receipt of the remaining holes in process at the

analytical laboratory.

Figure 3: Section 569500E

NW23-19 was drilled south of Zone 1 in the vicinity of the “Moly Quarry” (See Figure 4) as the first of a series of holes to

be used to vector into the centre of the down faulted porphyry system. This hole provided important vectoring

information from the alteration minerals present but did not intersect economically significant grade.

Northisle Copper and Gold Inc. | 1200 – 1166 Alberni St. | Vancouver, BC | V6E 3Z3

www.northisle.ca | [email protected]

Figure 4: Bird's Eye View of Northwest Expo Zone 1 and "Moly Quarry" to Southeast

A magnetic survey carried out at the end of 2023 by Simcoe Geoscience Limited, south of the ‘Moly’ quarry beside

NW23-19 (see Figure 4), and a separate survey completed south of the two discovery holes at West Goodspeed (GS23-

04 and GS23-05) will be released once all data is compiled and verified, anticipated to be during Q1 2024. These two

surveys are anticipated to assist in vectoring towards the centre of the porphyry cluster identified at the northwest end

of the North Island Project. Additional details about the West Goodspeed discovery can be found here:

https://www.northisle.ca/news/northisle-makes-new-discovery-of-near-surface-copper-gold-porphyry-with-multiple-

intercepts-at-west-goodspeed/

Northisle has re-logged the core from the previous programs at Northwest Expo. Check assays have not been carried out

on this core, however the mineralized lithologies observed and relogged, as well as related assays results, are consistent

with adjacent holes drilled, logged and assayed by Northisle. Results of the previous programs at Northwest Expo were

first disclosed in the following reports:

• Baker, D. (2005). Geological, Geochemical, Geophysical and Diamond Drilling Report on the Hushamu Property,

Volumes A, B, C

• Lehtinen, J., and Awmack, H. (2007). Diamond Drilling Report on the Hushamu Property

• Baldys, C., Burgert, A. and Houle, J. (2008). Technical Report on the Island Copper Property

Northisle Copper and Gold Inc. | 1200 – 1166 Alberni St. | Vancouver, BC | V6E 3Z3

www.northisle.ca | [email protected]

Logging, Sampling and Assaying Procedures and QA/QC

The diamond drill core logging and sampling program was carried out under a rigorous quality assurance / quality

control program using industry best practices. Drill intersections in this release are typically HQ to 100 m and NQ

thereafter to the end of holes. After drilling, core was logged for geology, structure, and geotechnical characteristics

utilizing Geospark© core logging software, then marked for sampling and photographed on site. The cores for analyses

were marked for sampling based on geological intervals with individual samples 3 m or less in length. Drill core was cut

lengthwise in half with a core saw. Half-core was sent for assays reported in this news release. Prior to cutting core for

assay bulk density was also determined on site by taking 15 to 20 cm lengths of whole core of each lithology at 10 m

intervals. The ends of these were then cut at right angle to the core axis, retaining all pieces to be returned to the core

box for later sample cutting and analysis. The diameter of each core sampled for bulk density was measured at each

end with digital calipers to 3 decimal places and recorded. The length of the core was measured on four sides at 90

degrees to each other, to 2 decimal places and recorded. The software averaged the lengths and diameters. The mass of

the dry core was measured twice on an Ohaus© balance to 2 decimal places. If no discrepancy occurred the

measurement was recorded. If there was a discrepancy the measuring was repeated until no discrepancy between 2

measurements occurred. The density was calculated using the formula Bulk Density = π times r² times h (where r is

radius of core and h is length of core). Certified standard masses are used to calibrate the scale balance used for bulk

density determinations. The balance in the core logging area was levelled on a large concrete block to avoid vibration,

was leveled, and surrounded by a wooden partition to avoid wind affecting the balance. The measurements were

recorded in Geospark© logging software and Bulk Density calculated to 2 decimal places.

A total of 5% assay standards or blanks and 5% core duplicates are included in the sample stream as a quality control

measure and are reviewed after analyses are received. Standards were obtained from WCM Minerals, Vancouver, CDN

Minerals, Langley and OREAS, Canada. Blanks were obtained from unmineralized course bagged limestone landscaping

rock. Standards and blanks in 2023 drill results to date have been approved as acceptable. Duplicate data add to the

long-term estimates of precision for assay data on the project and precision for drill results reported is deemed to be

within acceptable levels. Samples were sent to the MSALABS in Langley, BC where the samples were dried, then crushed,

split and a 250 g split was pulverized to 85% passing -200 mesh (-75µm) size pulps. Clean crush material was passed

through the crusher and clean silica was pulverized between each sample. The pulps were analyzed for gold by fire assay

fusion of 50 g of the 250 g split. Total gold content was determined by digesting the silver doré bead from the fusion and

then analysing by AA (MSA Code FAS-121). All samples were also analyzed for multiple elements by taking a 0.25 g of the

250g split which was heated in HNO3, HClO4 and HF to fuming and taken to dryness. The residue was dissolved in HCl

and then analyzed utilizing ICP-MS (MSA Code IMS-230). Any sulphur analysis from this latter analysis with a value

greater than 10% was reanalyzed utilizing a Leco sulfur analyzer. Iron and Tungsten accelerators are added to the

sample and a stream of oxygen is passed over the sample in the induction furnace. As the sample is heated, sulfur

dioxide released from the sample is measured by an IR detection system and the Total Sulphur content is determined.

(MSA Code SPM-210). MSALABS (Langley) is an independent, international ISO/IEC 17025:2005 accredited laboratory.

Pulps and rejects of holes with significant assay intervals are stored at Western Mineral Storage. The remaining split core

is indexed and stored at Northisle logging and office facility in Port Hardy, BC.

Results in this news release are length weighted averages.

Qualified Person

Robin Tolbert, P.Geo., Vice President Exploration of Northisle and a Qualified Person as defined by National Instrument

43-101, has reviewed and approved the scientific and technical disclosure contained in this news release, including the

sampling, analytical and test data.

Northisle Copper and Gold Inc. | 1200 – 1166 Alberni St. | Vancouver, BC | V6E 3Z3

www.northisle.ca | [email protected]

About Northisle

Northisle Copper and Gold Inc. is a Vancouver-based company whose mission is to become Canada’s leading sustainable

mineral resource company for the future. Northisle, through its 100% owned subsidiary North Island Mining Corp., owns

the North Island Project, which is one of the most promising copper and gold porphyry projects in Canada. The North

Island Project is located near Port Hardy, British Columbia on a more than 34,000-hectare block of mineral titles 100%

owned by Northisle stretching 50 kilometres northwest from the now closed Island Copper Mine operated by BHP

Billiton. Northisle completed an updated preliminary economic assessment for the North Island Project in 2021 and is

now focused on advancement of the project through a prefeasibility study while continuing exploration within this highly

prospective land package.

For more information on Northisle please visit the Company’s website at www.northisle.ca.

On behalf of Northisle Copper and Gold Inc.

Nicholas Van Dyk, CFA

Chief Financial Officer

Tel: (778) 655-9582

Email: [email protected]

www.northisle.ca

Cautionary Statements regarding Forward-Looking Information

Certain information in this news release constitutes forward-looking statements under applicable securities law. Any statements that are contained

in this news release that are not statements of historical fact may be deemed to be forward -looking statements. Forward -looking statements are

often identified by terms such as “may”, “should”, “anticipate”, “expect”, “intend” and similar expressions. Forward-looking statements in this news

release include, but are not limited to, statements relating to the 2023 assay results, anticipated timing for further assay results, expectations

regarding the 2023 expl oration program , timing of key catalysts ; planned activities, including further drilling, at the North Island Project; the

Company’s anticipated exploration activities; and the Company’s plans for advancement of the North Island Project. Forward -looking statements

necessarily involve known and u nknown risks, including, without limitation, Northisle’s ability to implement its business strategies; risks associated

with mineral exploration and production; risks associated with general economic conditions; adve rse industry events; stakeholder engagement;

marketing and transportation costs; loss of markets; volatility of commodity prices; inability to access sufficient capital f rom internal and external

sources, and/or inability to access sufficient capital on favourable terms; industry and government regulation; changes in legislation, income tax and

regulatory matters; competition; currency and interest rate fluctuations; and other risks. Readers are cautioned that the for egoing list is not

exhaustive.

Readers are further cautioned not to place undue reliance on forward-looking statements as there can be no assurance that the plans, intentions, or

expectations upon which they are placed will occur. Such information, although considered reasonable by mana gement at the time of preparation,

may prove to be incorrect and actual results may differ materially from those anticipated. Forward-looking statements contained in this news release

are expressly qualified by this cautionary statement.

The forward-looking statements contained in this news release represent the expectations of management of Northisle as of the date of thi s news

release, and, accordingly, are subject to change after such date. Northisle does not undertake any obligation to update or revise any forward-looking

statements, whether as a result of new information, future events or otherwise, except as expressly required by applicable securities law.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Ven ture Exchange) accepts

responsibility for the adequacy or accuracy of this news release.