Mr. Grant Ewing reports

BLUE STAR EXPANDS HIGHLY PROSPECTIVE AUMA PROPERTY TO 11,794 HECTARES

Blue Star Gold Corp. has made a significant expansion of its Auma property in the Kitikmeot region of Nunavut, Canada. The highly prospective property has been increased from 614 hectares to 11,794 hectares, consolidating a large and underexplored portion of the High Lake volcanic belt.

Highlights:

• Limited historical drilling, consisting of six short drill holes totalling less than 350 metres, tested only a small portion of the known mineralization (AR083564).
• Historical drilling intersected high-grade gold, including 15.3 grams per tonne gold over 2.6 metres (Zone 1) and 2.4 g/t Au over 4.0 metres (Zone 2) (AR083564).
• Zone 3 hosts the highest-grade surface gold samples, with 2025 grab samples grading up to 151.5 g/t Au, and remains untested by drilling (news release dated Sept. 10, 2025).
• Two thousand twenty-five surface exploration confirmed property-scale gold mineralization, with high-grade samples (up to 35.3 g/t Au) collected as far as 1.4 kilometres from the original showing (news release dated Sept. 10, 2025).
• The Penny Lane prospect, discovered in 2025, returned high-grade copper and gold values from surface sampling, including 7.64 g/t Au and 4.2 per cent copper, highlighting additional polymetallic potential (news release dated Sept. 10, 2025).
• Multiple generations of electromagnetic and magnetic data sets appear to highlight mineralized trends, many of which remain untested by drilling.

"Our 2025 results demonstrated the strength and size of the Auma gold system, and the expanded land position allows us to explore it at a scale that reflects its potential," said Grant Ewing, chief executive officer of Blue Star. "By securing control over multiple mineralized trends and geological settings, we have created a much larger opportunity that we are excited to advance through systematic exploration using modern tools and approaches. The planned 2026 drill program will represent the first modern test of Auma's highest-priority targets."

Auma property discussion

The original Auma property hosts high-grade, vein-hosted gold mineralization within mafic volcanic rocks. Quartz veins containing pyrrhotite plus or minus pyrite and local chalcopyrite have returned surface samples exceeding 100 g/t gold (news release dated Sept. 10, 2025). Elevated gold grades are commonly associated with pyrrhotite-rich vein selvages, while disseminated sulphides occur within alteration halos characterized by silicification and biotite alteration.

Historical drilling has tested only a small portion of the known mineralized system, leaving the majority of the mineralized trends untested along strike and at depth. Subsequent surface work has significantly expanded the footprint of known mineralization well beyond the historically drilled areas.

The expanded Auma property includes approximately 4,255 hectares of Crown mineral claims and 7,539 hectares subject to a mineral exploration agreement on Inuit-owned land. The land package captures a favourable stratigraphic sequence considered prospective for both orogenic gold and volcanogenic massive sulphide mineralization.

The newly acquired ground significantly broadens the geological context of the project. Gold occurrences have been identified within carbonate-altered shear zones associated with arsenopyrite, representing a distinct mineralization style from the original Auma showing (AR083134). In addition, volcanogenic massive sulphide style showings occur in the Canoe Lake area, with zinc and copper occurrences spatially associated with iron formation elsewhere on the property (AR080483). Large portions of the Auma property remain underexplored.

Drill-ready targets

With the expanded land position in place, Blue Star is advancing Auma as a priority component of its 2026 exploration program. The company is planning a phase 1 diamond drilling program to test the highest-priority targets defined by historical drilling, recent surface exploration and integrated interpretation of multiple geophysical data sets, including SkyTEM electromagnetic and magnetic data collected in 2025.

Planned drilling will focus on:

• Zone 1, testing downdip extensions of historical mineralization, and targeting coincident electromagnetic and magnetic anomalies that are associated with mapped quartz sulphide veining and high-grade surface samples;
• Zone 3, which hosts the highest-grade surface gold samples on the property and has never been drill tested, targeting a coincident EM and magnetic anomaly interpreted to potentially reflect pyrrhotite-rich vein selvages observed at surface;
• Penny Lane, where a reconnaissance scout hole is planned to test copper-gold mineralization identified in surface sampling.

Existing data derisks the drill program

The Auma property benefits from a multigenerational exploration data set that significantly derisks target generation. Existing historical data includes airborne DIGHEM electromagnetic and magnetic surveys, detailed ground magnetic and MaxMin electromagnetic surveys, extensive surface grab samples, and soil geochemical sampling. A detailed geological map completed by Stubley (2006) documented quartz veining and major structural features across the property.

These exploration data are complemented by limited historical drilling and a modern SkyTEM heliborne electromagnetic and magnetic survey completed in 2025. Collectively, these data sets indicate that electromagnetic and magnetic responses appear to be spatially associated with mapped mineralization and veining, providing a strong technical foundation for integrated interpretation and well-constrained drill targeting.

2026 exploration program -- planned work

During the 2026 season, the company will continue to compile historical data throughout the winter season. In addition to drilling, summer work on the Auma property will include an extensive prospecting program over the newly acquired ground targeting known historical gold and VMS showings, in addition to areas highlighted by the 2025 SkyTEM survey.

Qualified person

Darren Lindsay, PGeo and vice-president, exploration, for Blue Star, is a qualified person under National Instrument 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 -- composed of the Ulu mining lease and the 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 resource expansion. Blue Star's projects are strategically located 40 to 100 kilometres south of the proposed Grays Bay deepwater port, with the planned all-weather Grays Bay Road corridor passing near both the Roma and Ulu gold projects.

Blue Star is listed on the TSX Venture Exchange (BAU), the OTCQB Venture Market (BAUFF) and the Frankfurt Exchange (5WP0).

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