Northisle Copper and Gold Inc. (TSX-V:NCX) ('Northisle' or the 'Company') is pleased to announce that it has successfully concluded its phase one drill program at Northwest Expo and Goodspeed.

In addition, the Company has received a 5-year area-based exploration permit covering its Pemberton Hills exploration targets on the North Island Project. Receipt of this permit, as well as the Northwest permit received earlier this year, followed a robust engagement process which included extensive information sharing and discussions with impacted First Nations in advance of and throughout the permitting process.

Robin Tolbert, Vice President Exploration, commented 'We are pleased that our program at Northwest Expo has intercepted the anticipated alteration in multiple holes drilled in Zone 1, based on preliminary visual inspection of core. Our team is in the process of completing visual, x-ray fluorescence and spectroscopic analysis and several holes have already been sent for assay. We eagerly await the results in the coming weeks and will leverage these results to assist in the targeting of our second phase program. In addition, the presence of sulphides and anomalous copper at Goodspeed is encouraging.'

Northwest Expo 2023 Phase One Preliminary Results

Northisle has completed a total of 8 holes for a total of 4,188m in its 2023 Phase One program at Northwest Expo. These holes were drilled with the objective of defining a preliminary resource in the gold-enriched copper porphyry mineralization found in Zone 1 occurring in silica-clay-pyrite ('SCP') and altered Jurassic Bonanza Formation andesitic volcanoclastic rocks.

Based on visual interpretation, drilling has intercepted SCP and/or chlorite-magnetite alteration zones in holes NW23-09 to NW23-15, which were drilled on a grid designed to in-fill and step out from historical and 2022 drilling in Zone 1.

In addition, a large step out to the west was also completed in NW23-16 where a 102m intercept of silica-clay-pyrite alteration was logged in this distal zone.

Samples from all 8 holes have been submitted for analysis and the last hole's results are anticipated by early October.

Drilling at Goodspeed Completed

Following the completion of the Phase 1 program at Northwest Expo Zone 1, the drill was moved to the Goodspeed target area, where five holes totalling 1,626m were drilled to test targets outlined by the interpretation of surface alteration mapping, historical drilling and induced polarization and magnetic geophysics surveys completed in 2022. These holes are currently being logged and sampled for assaying. Sulphides were visible in GS23-01, GS23-03, GS23-04 and GS23-05 and spot PXRF scans indicated anomalous copper values of up to 4,900 ppm. These values are encouraging and the results of assays will be reported once received.

2023 Catalysts

In January, Northisle announced several key catalysts for 2023. We have continued to make progress against our milestones and are on track for the remaining items for this year.

COMPLETED - Results from Fall 2022 surface exploration program including geophysics, mapping and sampling

COMPLETED - Advancement of Pemberton Hills thesis

COMPLETED - Signed agreement with Tlatlasikwala First Nation in addition to existing Quatsino First Nation agreement

COMPLETED - Northwest Expo resource definition drilling targeting gold-enriched Zone 1

COMPLETED - Goodspeed scout drilling

Q3 2023 - Commence Phase II fully funded drill program

Q4 2023 - Inaugural Northwest Expo Zone 1 resource estimate

ONGOING - Metallurgical testing results

ONGOING - Continued progress on relationships with indigenous rightsholders and local stakeholders

UPCOMING INVESTOR RELATIONS EVENTS

During the fall, the Company will continue to be very active in reaching out to new and existing investors via virtual and in-person channels. The Company has also recently concluded several site visits to the North Island Project. Northisle will be attending several external investor events including:

September 12-15: Precious Metals Summit, Beaver Creek

September 17-20: Gold Forum Americas, Colorado Springs

November 13-15: Precious Metals Summit, Zurich

Northisle is finalizing a new investor relations website. Keep an eye on our social media for the announcement of the new website. You can follow us on X(formerly Twitter), LinkedIn, Facebook or on YouTube.

This news release contains forward-looking statements. These forward-looking statements are based upon the reasonable beliefs of Northisle and its management as of the date of this news release; however, forward-looking statements involve risks and uncertainties and are based upon factors that may change and assumptions that may prove, with the passage of time, to be incorrect as a result of exploration and other risk factors associated with mineral exploration and development that are beyond the control of Northisle. Accordingly, undue reliance should not be placed upon such statements. If factors materially change or assumptions are materially incorrect, the actual results, performance or achievements of Northisle may be materially different from any future results, performances or achievements expressed or implied by such forward-looking statements. Northisle does not undertake any obligation to update or revise any forward-looking statements to reflect new information, future events or otherwise, except as required by applicable law.

Contact:

Tel: 1-604-638-2515

Fax: 1-604-669-2926

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