Mr. Grant Ewing reports

BLUE STAR REPORTS HIGH GRADE SURFACE SAMPLES FROM THE AUMA PROSPECT

Blue Star Gold Corp. has released additional results from the completed phase I surface exploration program at its projects located in the High Lake belt, West Kitikmeot region of Nunavut. Blue Star's field-based surface exploration program was initiated in June and completed in July, leaving additional opportunity for field follow-up after the drill program to advance targets to drill ready status. An update on the drilling program will be announced in the coming days.

Auma highlights

• Two samples grading over 100 grams per tonne gold (151 and 125 grams per tonne gold) extended the high-grade Zone 3 an additional 35 metres to the south, for a total strike length of 130 metres which remains untested by drilling
• A total of 133 samples were collected: 33 per cent (44 samples) returned grades over one g/t Au, 14 per cent (18) over five g/t
• One prospect dubbed Penny Lane returned high copper values in addition to high gold values in quartz veining; one sample (H504682) returned grades of 7.64 g/t Au and 4.2 per cent Cu (copper).
• Groundwork confirmed quartz veining with anomalous gold is distributed across the Auma property, with high-grade samples (35.3 g/t Au) as far away as 1.4 km from the original showing.
• SkyTEM survey: 89 line kilometres of modern EM and magnetics data completed over the property.

"The expanded Auma prospect is a very encouraging addition to our exploration target pipeline," said Grant Ewing, chief executive officer of Blue Star. "The high-grade gold grabs at surface, along with visible gold and numerous untested geophysical anomalies, suggest that we may be on the verge of something significant. Furthermore, the proximity to the proposed road, just 15 kilometres to the east, improves the accessibility of this project and positions it well for future development. We are looking forward to advancing this target as part of our 2026 drill program, where we plan to test its full potential."

Discussion of the Auma field program

During the 2025 season, Blue Star undertook targeted prospecting, mapping and pXRF lithogeochemical chip sampling across the Auma property. The areas focused on were defined by compiled data for the prospect that included mapped vein trends, magnetic anomalies, MaxMin conductive plate surface traces and historical DIGHEM picks.

Anomalous gold is distributed throughout the Auma property, with high-grade samples collected as far away as 1.4 kilometres from the original showings. Gold is associated with gossanous, sulphide-bearing quartz veining within the abundant gossans across the property. The gossans are caused by disseminated pyrrhotite (plus/minus pyrite) within the mafic volcanic host rocks. Biotite alteration and silicification associated with the disseminated sulphides occur as an alteration halo around veining. Large gossanous quartz blocks were commonly found in frost boils. Pyrrhotite, pyrite and chalcopyrite often occurred within the veining, or at vein selvages.

Several different types of quartz and associated sulphides were noted as described below:

• Dark grey to white glassy quartz, sometimes with disseminated pyrrhotite, pyrite and variable amounts of chalcopyrite throughout;
• Vuggy white quartz with coarse pyrite agglomerates when fresh; pyrite is commonly weathered-out leaving rusty staining and large vugs;
• White to orange to pink sugary quartz and carbonate, and bands of pyrrhotite;
• Vein selvages, more closely associated with the dark grey quartz are often characterized by massive tabular to flaky pyrrhotite plus/minus stringers of chalcopyrite.

The pyrrhotite found in alteration halos, selvages and the veins themselves is likely the cause of magnetic and electromagnetic anomalies noted in the historical ground magnetic and MaxMin surveys.

In one distinct area, located 1.2 km southwest of the original gold showing, chalcopyrite was identified within white quartz veining. This area, now called the Penny Lane prospect returned strong copper and gold values with elevated silver content (see Table 1). A second area, located 300 metres along strike to the south, also returned anomalous copper values associated with both massive sulphides in mafic volcanic host rocks and quartz veining.

In addition to groundwork, Blue Star contracted SkyTEM to fly a heliborne electromagnetic and magnetic survey over the Auma claim block. The survey consisted of 89 line kilometres covering 614 hectares. The results for this survey are pending.

Next steps

The 2025 field season was very successful at expanding the extent of known high-grade gold veining across the Auma property and identifying new areas of anomalous gold and copper mineralization. The lithogeochemical chip sampling results combined with the company's knowledge of the Ulu stratigraphy and the new magnetics survey data will be used to generate a revised geological map and targeting model for the Auma prospect. Based on the historical work Auma was drill ready in 2025, and the additional fieldwork and data compilation has led to more compelling drill targets across the property. Auma is expected to be a key component of a robust 2026 exploration drill program.

Sampling, assaying and QA/QC (quality assurance/quality control)

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 mineralization 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, NWT, for sample preparation which are then forwarded to ALS Canada Inc. in North Vancouver, B.C., for final analysis. Samples are prepared using code PREP-31 (crushing and pulverizing) and analyzed 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 greater than 10 g/t Au are reanalyzed under code Au-GRA22 (50-gram fire assay with gravimetric finish). Overlimits 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.

Qualified person

Darren Lindsay, PGeo, and vice-president of 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 in Nunavut, Canada. Blue Star's landholdings total 300 square kilometres of highly prospective and underexplored mineral properties in the High Lake greenstone belt. The company owns the Ulu gold project, comprising the Ulu mining lease and Hood River property, and the Roma project. A significant high-grade gold resource exists at the Flood zone deposit (Ulu mining lease) and numerous high-potential exploration targets (gold and critical minerals) occur throughout the company's extensive landholdings, providing Blue Star with excellent resource growth potential. The site of the future deepwater port at Grays Bay is 40 to 100 km to the north of the properties, and the proposed route corridor for the all-weather Grays Bay Road passes close by the Roma and Ulu gold projects.

Blue Star is listed on the TSX Venture Exchange under the symbol: BAU, the U.S. OTCQB Venture Market under the symbol: BAUFF and on the Frankfurt Exchange under the symbol: 5WP0.

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