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Blue Star Reports Completion of 2026 Phase 2 Drilling Program and Auma Results Including 4.3 m of 6.06 g/t Au and 2.7 m of 6.23 g/t Au

Drill Results Exploration Programs

Blue Star Reports Completion of 2026 Phase 2

Drilling Program and Auma Results Including

4.3 m of 6.06 g/t Au and 2.7 m of 6.23 g/t Au

Vancouver, British Columbia--(Newsfile Corp. - September 21, 2026) -

Blue Star Gold Corp. (TSXV:

BAU) (OTCQB: BAUFF) (FSE: 5WP0) ("Blue Star" or the "Company")

announces the completion

of its 2026 Phase 2 Drill Program, follow-up drilling results from the Auma Bamako Target, and results

from the first drill holes at the Auma Penny Lane Target. Blue Star is a leading explorer in Canada's

North with its projects strategically located along the proposed Grays Bay Road in the High Lake Belt,

West Kitikmeot Region of Nunavut (Figure 1).

Highlights

26ABD006 returned

4.3 metres (m) of 6.06 grams per tonne gold (g/t Au)

from 82.7 metres

downhole, including two 0.3 m vein intervals assaying

35.40 g/t Au and 25.20 g/t Au

26ABD008 targeted the same mineralized structure, and returned

2.7 m of 6.23 g/t Au

(includes

0.6 m of 19.75 g/t Au) from 60.1 metres downhole, and

2.4 m of 3.67 g/t Au

(includes 0.4 m of

15.75 g/t Au) from 96.2 metres downhole

26APD012 tested the Penny Lane prospect, and returned

2.7 m of 2.73 g/t Au

from 37.5 metres

downhole in the first drilling of this prospect located 1,200 metres southwest of the Bamako Target

A total of 6,552 metres was completed across ten gold and critical mineral targets with most of the

drilling targeting the new Auma discovery

"The follow up results from the Auma Bamako target continue to strengthen our interpretation of a

significant gold-bearing system, with multiple holes now returning high-grade mineralization over

meaningful widths," said Grant Ewing, CEO of Blue Star. "We are also encouraged by the first results

from Penny Lane, where drilling has confirmed a mineralized structure beneath the 2025 surface

discovery. Together, these results provide a solid foundation for refining our geological model and

prioritizing follow-up drilling across the Auma Project."

Discussion of the Auma Project

The expanded Auma Project (News Release dated February 18, 2026) encompasses a district-scale

land position prospective for both high-grade orogenic gold and volcanogenic massive sulphide (VMS)

mineralization. The original Auma showing (Bamako) hosts high-grade, vein-hosted gold mineralization,

including surface samples exceeding 100 g/t Au. The mineralization is associated with quartz veins,

sulphide-rich selvages, and alteration halos. Historical drilling tested only a small portion of the known

mineralized system. Blue Star's recent surface exploration work significantly expanded the mineralized

footprint beyond previously drilled areas. The enlarged property now covers approximately 11,794

hectares of Crown and Inuit Owned Lands and includes multiple styles of mineralization, including

carbonate-altered shear-hosted gold and VMS-related zinc and copper occurrences, highlighting the

project's strong discovery potential and the significant opportunity presented by the large areas that

remain unexplored.

The current 2,400-metre maiden drill program was designed to test the property's priority gold and

copper-gold targets. The drill program focused on understanding and expanding known mineralization at

the Bamako Zone, evaluating high-grade surface gold discoveries, and completing a reconnaissance

test of the Penny Lane copper-gold target discovered in 2025 (News Release dated September 10,

2025). The program was supported by an extensive historical and modern exploration database,

including drilling, geological mapping, surface geochemistry, and multiple airborne and ground

geophysical surveys, providing a strong technical foundation for prioritizing targets and reducing

exploration risk (Figure 2).

Follow-up drilling at Bamako has continued to intersect a broad system of altered volcanic and

sedimentary rocks containing quartz veining and sulphide mineralization, with multiple structurally

controlled mineralized intervals identified across a total of ten drill holes. The results confirm the

continuity of mineralization between previously tested areas and provide additional evidence that the

Bamako system extends beyond the limits of historical drilling. Assay results from the follow-up holes

include several high-grade intervals (Table 2). Additional significant intervals occur throughout the holes,

demonstrating multiple mineralized zones within the broader Bamako system.

Hole

26ABD006

was drilled down-dip from 26ABD005 (

2.0 m of 10.6 g/t Au

, News Release dated

August 26, 2026) to test vertical continuity of the visible gold-bearing quartz vein. The hole intersected

multiple sulphide-bearing quartz veins with visible gold and returned 4.3 m of 6.06 g/t Au, including 0.3 m

of 35.40 g/t Au and 0.3 m of 25.20 g/t Au, supporting continuation of the mineralized structure down dip

(Figure 3).

Hole

26ABD007

was drilled approximately 100 metres south-southeast of hole 26ABD003 (

8.0 m of

2.65 g/t Au

, News Release dated August 26, 2026) to evaluate coincident historical high-grade surface

gold samples, a MaxMin electromagnetic conductor, magnetic anomaly, and the BAM fault zone. The

objective was to determine whether these coincident geophysical and geological features represent a

significant gold-bearing structure. The hole intersected variably deformed volcanic and sedimentary

rocks with several shear zones and quartz-carbonate veins. A narrow quartz vein at 181.25-181.75 m

contains 4-5% pyrrhotite and 1-2% chalcopyrite, representing the strongest mineralization observed in

the hole.

Hole

26ABD008

was drilled approximately 40 metres south of 26ABD005/26ABD006, both of which

intersected visible gold-bearing quartz veins. The objective was to determine strike continuity of these

mineralized structures and test coincident geophysical anomalies. Drilling encountered volcanic rocks

throughout the hole together with widespread silicification, an alteration style commonly associated with

mineralizing fluids. A well-mineralized quartz vein was intersected, returning

2.7 m of 6.23 g/t Au

(includes 0.6 m of 19.75 g/t Au), from 60.1 metres downhole, and

2.4 m of 3.67 g/t Au

(includes 0.4 m of

15.75 g/t Au) from 96.2 metres downhole, indicating continuity of the mineralizing system (Figure 4).

Hole

26ABD009

evaluated a new target area approximately 600 metres from the known Bamako Target

area. The target has many of the same geological and geophysical characteristics as the visible gold-

bearing system to the north and lies along a major structural corridor connecting two important regional

fault systems. Anomalous gold values were encountered within the targeted alteration and structural

corridors; however no significant intervals were returned.

Hole

26ABD010

tested historical Bamako Zone 2 originally identified by BHP in 1995. The target

combines a magnetic anomaly identified in both historical and 2025 airborne geophysical data with

mapped quartz veining and high-grade gold samples collected at surface. Drilling intersected mafic

volcanic rocks separated by sedimentary intervals. Although quartz veining and disseminated sulphides

were encountered, no significant gold values were returned.

Discussion of the Auma - Penny Lane Target

Located 1.2 kilometres south of the Bamako Target, the Penny Lane Target is a quartz vein showing

defined by base metal sulphides and locally significant gold grades (News Release dated September

10, 2025). The known showing was traced for approximately 200 metres at surface near the margin of

the greenstone belt, where mafic volcanic rocks are in contact with belt bounding granitoids.

Mineralization occurs as a series of sub-crops and frost heaved blocks. The 2026 program represents

the first known drilling of this gold and base metal sulphide rich area.

Hole

26APD011

tested beneath several large quartz blocks containing significant chalcopyrite and

minor galena mineralization. Sampling from 2025 returned assays up to 7.64 g/t Au and 4.2% Cu (News

Release dated September 10, 2025). The drill hole remained entirely within granite and did not intersect

the targeted volcanic-granite contact zone.

Hole

26APD012

tested the Penny Lane Target from the other side of the interpreted structure to better

assess the source of the mineralized quartz float observed at surface. The drill hole intersected the

volcanic-granite contact and encountered a well-mineralized quartz vein with an associated sulphide-rich

alteration halo (Plate 1). Assay results returned 2.7m of 2.73 g/t Au and 0.101% Cu from 37.5 metres

downhole.

Hole

26APD013

was drilled below 26APD012 to test the down-dip continuity of the mineralized

structure. The projected quartz vein system was successfully intersected, returning 3.0 m of 0.98 g/t Au

and 0.212% Cu from 45.1 metres downhole. The intercept confirms continuation of the mineralized

structure down dip and provides additional information on its geometry and exploration potential.

Next Steps

Drilling on the Auma Project is completed for the year. Next steps include full data compilation,

geological modeling and evaluating the project for further drill planning. This compilation work will include

the Bamako Target, the Penny Lane Target and historical showings reviewed during the 2026 season,

with the objective of identifying areas with the greatest potential to develop a potential new mineral

resource center.

Plate 1: Penny Lane Drill Intercept: Mineralized Quartz Vein in Mafic Volcanic Rocks 1.2 km

South of the Bamako Target

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

https://images.newsfilecorp.com/files/2421/315134_a02cee82042caa05_002full.jpg

Table 1: Drill Collars

HoleID

Easting

Northing

Elevation

Azimuth

Dip

Length (m)

Target

26ABD006

491997

7446204

462

80

-60

185

Bamako

26ABD007

492255

7445911

454

250

-44

248

Bamako

26ABD008

492005

7446163

462

78

-49

232.6

Bamako

26ABD009

491866

7446217

460

285

-50

131

Bamako

26ABD010

492611

7445791

450

248

-46

173

Bamako

26APD011

491195

7445343

453

90

-51

101

Penny Lane

26APD012

491277

7445340

463

271

-48

66.48

Penny Lane

26APD013

491277

7445340

463

271

-76

68

Penny Lane

Note: Collar locations are in UTM NAD83, Zone 12N coordinates.

Table 2: Summary of Assay Results

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

https://images.newsfilecorp.com/files/2421/315134_a02cee82042caa05_003full.jpg

Intervals are down hole lengths; there has been insufficient drilling to determine true thicknesses.

Figure 1: Location Map Showing Blue Star's Landholdings.

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

https://images.newsfilecorp.com/files/2421/315134_a02cee82042caa05_004full.jpg

Figure 2: Auma Project with Bamako & Penny Lane Targets Shown on SkyTEM Total

Magnetics Data Overlain with Gold Grades from Rock Samples.

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

https://images.newsfilecorp.com/files/2421/315134_a02cee82042caa05_005full.jpg

Figure 3: Vertical Cross Section of Drill Holes 26ABD005/26ABD006, Bamako Target.

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

https://images.newsfilecorp.com/files/2421/315134_a02cee82042caa05_006full.jpg

Figure 4: Vertical Cross Section of Drill Hole 26ABD008, Bamako Target.

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

https://images.newsfilecorp.com/files/2421/315134_a02cee82042caa05_007full.jpg

.

Exploration Leadership

Trish Toole has been appointed as Blue Star's Exploration Manager. Ms. Toole is a Professional

Geoscientist with more than 20 years of mineral exploration experience, including extensive experience

working in Nunavut and Canada's Arctic. She has a broad background in gold and base metal

exploration and has led multidisciplinary field and drill programs in remote environments. Her

combination of technical, field and operational experience will support Blue Star's continued exploration

activities across its Nunavut projects.

Darren Lindsay, the Company's Vice President Exploration, will be resigning on October 30, but will

continue to support Blue Star's exploration work programs as a Technical Advisor.

Sampling, Assaying & QA/QC

Blue Star field programs collect a variety of samples; prospecting rock samples are selective by nature,

channel samples are saw-cut samples from outcrop intended to be representative of the exposed

mineralisation, and drill core samples are sawn in half with one half retained as core record and the other

half submitted for analysis. Blue Star samples are delivered under chain of custody to ALS

Geochemistry in Yellowknife, NT for sample preparation which are then forwarded to ALS Canada Inc. in

North Vancouver, BC for final analysis. Samples are prepared using code PREP-31 (crushing and

pulverising) and analysed using codes Au-AA26 (50-gram fire assay with atomic absorption finish) and

ME-MS61 (48 element four acid digestion with ICP-MS finish). Samples returning >10 g/t Au are

reanalysed under code Au-GRA22 (50-gram fire assay with gravimetric finish). Over limits for non-gold

elements are ore grade four acid digestion with ICP-AES finish. The work is being conducted using

industry standard procedures, including a quality assurance and quality control ("QA/QC") program

consisting of the insertion of certified standards, blanks and duplicates into the sample stream.

Trish Toole, P. Geo. and Exploration Manager for Blue Star, is a Qualified Person under National

Instrument 43-101 ("NI 43-101") and has reviewed and approved the technical information contained in

this news release.

About Blue Star Gold Corp.

Blue Star is a mineral exploration and development company focused on Nunavut, Canada. The

Company controls over 420 square kilometres of highly prospective and underexplored mineral

properties in the High Lake Greenstone Belt. Its principal assets include the Ulu Gold Project -

comprised of the Ulu Mining Lease and Hood River Property, and the Roma and Auma Projects. The Ulu

Mining Lease hosts the high-grade Flood Zone Gold Deposit, and the Company's broader land package

contains numerous high-priority gold and critical mineral targets, providing substantial upside potential

for Mineral Resource expansion.

Blue Star's projects are strategically located 40-100 km south of the proposed Grays Bay deep-water

port, with the planned all-weather Grays Bay Road corridor passing very close to the Company's

Projects. The Grays Bay Road and Port Project was recently referred to the Major Projects Office. Prime

Minister Mark Carney created the Office last year to fast-track infrastructure projects that are deemed to

be of national importance.

Blue Star is listed on the TSX Venture Exchange (BAU), the OTCQB Venture Market (BAUFF), and the

Frankfurt Exchange (5WP0). Additional information is available at

www.bluestargold.ca

.

For further information, please contact:

Grant Ewing, P. Geo., CEO

Telephone: +1 778-379-1433

Email:

[email protected]

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

Release.