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ABI.V ·

TSX Venture Exchange: ABI.V Abcourt intersects 170.9 g/t Au over 0.8 m at Sleeping Giant

Drill Results Corporate Updates

For immediate release

TSX Venture Exchange: ABI.V

Abcourt intersects 170.9 g/t Au over 0.8 m at Sleeping Giant

Rouyn-Noranda, Canada, June 17 , 2026 Abcourt Mines Inc. (TSX-V: ABI) (OTCQB:

ABMBF) continues its work toward commercial production. The current 40,632 meters of

this drilling campaign contributes to strengthening its assets and confirming the potential

of the Sleeping Giant mine, its main project.

Highlights for Investors:

• Intensification of the drilling rate: 40,632 m completed in 370 holes

since December 2023, including 15,371 m completed in 2026.

• Operational acceleration: Deployment of a third drill to reach a rate

of 4,500 m per month.

• High-grade results: Notable intersections including 170.9 g/t Au over

0.8 m and 107.7 g/t Au over 0.5 m.

• Future progress : Definition work strengthens the mining plan and

optimizes operations for 2027.

Drilling Strategy: Convert to Produce

Abcourt goes beyond drilling by preparing for its future operations. The distribution of the

40,000 m illustrates rigorous management focused on value creation:

Drilling Type Footage Strategic Objective

Development 27,418 m Convert inferred resources into indicated

resources

Definition 9,368 m Optimize stope design for efficient extraction

Exploration 3,846 m Test depth potential and lateral extensions.

Results confirming mining potential

Recent drilling has revealed high-grade mineralized zones outside target areas:

Significant intersections (not previously published):

• Zone 3A3B: 170.9 g/t Au over 0.8M (Hole 23-561)

• Zone A(HW): 138.5 g/t Au over 0.5M (Hole 14-127)

• Zone 15: 107.7 g/t Au over 0.5M (Hole 29-310)

• Zone 20: 73.3 g/t Au over 0.5M (Hole 23-583)

Next steps: Toward a resource update

Increasing the drilling pace (target of 4,500 m/month) combined with recent LiDAR and

geophysical surveys will allow Abcourt to:

1. Refine the mine plan for increased operational flexibility.

2. Launch a new phase of deep exploration.

3. Publish a global mineral resource update integrating these convincing results.

Management statements :

Pascal Hamelin, P.Eng., President and Chief Executive Officer of Abcourt Mines,

states:

"The success of this drilling campaign is a game- changer at every level. On the

production side, discovering these very high- grade zones secures and significantly

enriches our ore profile, which will directly optimize our profit margins. Furthermore, a

rapidly expanding project and such spectacular results act as a powerful magnet for

recruitment. In the current context, offering miners and industry professionals a

stimulating environment, with long- term visibility and technical challenges of this

magnitude, gives us a major competitive edge to attract and retain top talent."

Mohamed Haithem Bennia, Geology Superintendent, P.Geo., adds: "In a vein- type

mine, increasing drilling density and pace improves resource precision, facilitates

development monitoring, and optimizes mine planning. These results strengthen

operational flexibility and support stable, sustainable production. We are very

encouraged by the outcomes of this campaign, which reinforce our confidence in the high

potential and promising future of the mine."

Figure 1: Evolution of the drilling rate and the number of since the start of the campaign

Figure 2 : Main unpublished drilling results as well as areas and stopes drilled.

Zone Stope / Section Hole ID

From

(m)

To

(m)

Interval

(m)

Final Au

(g/t)

Vein

DAC 5 29-DAC5 23-532

20 23 3 4.6 Target DAC5-V1

Including 22 23 1 8

and 28.5 29 0.5 58.1 Target DAC5-V8

23-540

22 25.1 3.1 22 Target DAC5-V1

Including 24.6 25.1 0.5 58.5

15 41-15-N397 41-436

72.5 73 0.5 36.9 Other vein

41-442

100.7 101.2 0.5 45.9 Other vein

15 29-15-N400 29-310

5 5.5 0.5 107.7 Other vein

29-320 and 63 64 1 10.9 Target vein 15

70.2 72 1.8 24.3 Other vein

Including 70.9 72 1.1 35.9

15 41-15-N419 41-422

112 113.6 1.6 34.1 Other vein

Including 112.5 113 0.5 69.8

41-435

29.2 30.5 1.3 28.3 Other vein

Including 29.8 30.5 0.7 47.6

20 LT-23-20-

N420

23-583

48.6 49.1 0.5 73.3 Other vein

23-586

59 60.1 1.1 29.1 Target vein 20

Including 59.6 60.1 0.5 61.6

23-593

24 24.5 0.5 43.3 Other vein

and 63 63.5 0.5 8.9 Target vein 20

3A3B CP-29-3A3B 23-561

21.5 22.3 0.8 170.9 Other vein

and 25 26.2 1.2 50.8 Target vein

3A3B

Including 25.5 26.2 0.7 85.6

4_5 23-4_5-

E327_E328 /

19-4_5-E325

23-505

48.7 51.7 3 14.7 Target vein 4_5

Including 50.9 51.7 0.8 46.6

23-520

6 6.5 0.5 66.8 Other vein

and 82 83 1 3.5 Target vein 4_5

A(HW) 14-A(HW)-

N369

14-127

48.9 49.4 0.5 138.5 Other vein

and 59.9 60.4 0.5 17.5 Target vein

A(HW)

14-129

60.4 60.9 0.5 26 Target vein

A(HW)

As shown in the table, several working areas were drilled for development and definition

purposes. However, these drillings often intersect off -target mineralized intersections,

which are not always integrated into the resources. In some cases, these new targets

may prove more promising than the main targets.

Their progressive modeling, as results are received, contributes to increasing resources,

even when drilling was initially aimed at definition or development.

Figure 3 : The longitudinal of production stopes

The longitudinal shows the sites planned for 2027, already converted into indicated

resources and, for the most part, sufficiently defined thanks to a drilling grid ensuring a

good level of confidence. It also shows the sites already drilled or which will be drilled in

the coming months. The same stope can be drilled in several stages — first for

conversion, then for definition — until reaching the level of confidence required for its

integration into the mining plan. The other sites resulting from the preliminary economic

study will be subject to additional drilling to achieve the level of confidence necessary for

their integration into the mining plan until 2034.

Figure 4 : Photos of cores from the best drilling intersections

The photos of the cores highlight the strong presence of sulphides in the mineralized

veins as well as their characteristic geometry. They also illustrate their width, generally

between 20 and 50 cm, which corresponds to the vein style observed at Sleeping Giant.

Quality Control Measures (QA/QC)

Technical supervision: The drilling and core description work was carried out under the

supervision of Mohamed Haithem Bennia, geo., superintendent of geology and qualified

person within the meaning of Regulation 43-101.

Sampling protocols

• In accordance with the analytical quality assurance and quality control (QA/QC)

program, blank samples, duplicates, and certified reference materials were inserted

among the core samples prior to shipping.

• The preparation of the half -cores was carried out at the Sleeping Giant mine's internal

laboratory, in strict compliance with industry standards.

Analysis Process and Timeline Optimization

In order to accelerate the receipt of the results required for this press release, the samples

were distributed as follows:

• Internal Laboratory (Sleeping Giant Mine): Analyses were performed by fire

assay with an atomic absorption (AA) finish. Samples showing a grade higher than

10 g/t Au were systematically re-analyzed using a gravimetric finish.

• External Laboratory (MSALABS, Val -d'Or, Quebec): A portion of the samples

was sent there as pulps to be analyzed using the Photon Assay ™ method.

MSALABS is a global network accredited to ISO -17025, specifically for this

photonic analysis method.

Scientific Rigour and Validation

To validate the accuracy of the internal laboratory results, check assays were performed

by Techni -Lab S.G.B. Abitibi inc. (a division of ActLabs) in Sainte- Germaine-Boulé,

Quebec. This independent external laboratory is ISO 9001 registered and ISO/IEC 17025

certified by the SCC (lab707) and the MELCCFP (lab375).

Verification Results: The external check assays demonstrate a high degree of

correlation with the internal laboratory data, confirming the reliability and precision of the

published results.

Qualified Persons:

Mohamed Haithem Bennia, P.Geo., Geology Superintendent at the Sleeping Giant mine,

drafted, collected, verified, and approved the technical information contained in this press

release.

Pascal Hamelin, P.Eng., President and Chief Executive Officer of the Company, verified

and approved the technical information contained in this press release.

Mr. Hamelin and Bennia are Qualified Persons as defined by National Instrument 43-101.

About Abcourt Mines Inc.

Abcourt Mines Inc. is a Canadian gold development company with properties strategically

located in northwestern Quebec, Canada. Abcourt owns the Sleeping Giant mine and mill

and the Flordin property, where it focuses its activities.

For further information about Abcourt Mines Inc., please visit our website at

www.abcourt.ca and the documents filed under our profile on the SEDAR+ website at

www.sedarplus.ca.

Pascal Hamelin Dany Cenac Robert

President and CEO VP Communication and Corporate Development

T : (819) 768-2857 T : (514) 722-2276, poste 456

email : [email protected] email : [email protected]

FORWARD-LOOKING STATEMENTS

Certain information contained in this press release may constitute "forward- looking information"

within the meaning of Canadian securities legislation. Generally, forward-looking information can

be identified by the use of forward -looking terminology such as "plans", "aims", "expects",

"projects", "intends", "anticipates", "estimates", "could", "should", "likely", or variations of such

words and phrases, or statements specifying that certain acts, events, or results "could", "should"

occur, "will occur", or "will be achieved", or other similar expressions. Forward-looking statements

are based on Abcourt's estimates and are subject to known and unknown risks, uncertainties, and

other factors that may cause the actual results, level of activity, performance, or achievements of

Abcourt to be materially different from those expressed or implied by such forward- looking

statements or forward-looking information. Forward-looking statements are subject to business

and economic factors and uncertainties, as well as ot her factors that could cause actual results

to differ materially from these forward-looking statements, including the relevant assumptions and

risk factors set forth in Abcourt's public documents available on SEDAR+ at www.sedarplus.ca.

There can be no assurance that such statements will prove to be accurate, as actual results and

future events could differ materially from those anticipated in such statements. Accordingly,

readers should not place undue reliance on forward- looking statem ents and forward -looking

information. Although Abcourt believes that the assumptions and factors used in preparing the

forward-looking statements are reasonable, undue reliance should not be placed on these

statements. Unless required by applicable securit ies laws, Abcourt disclaims any intention or

obligation to update or revise any of these forward-looking statements or information, whether as

a result of new information, future events, or otherwise.

Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined

in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy

of this press release.