Banyan expands mineral resource estimate at AurMac deposit, Yukon

VANCOUVER, BC / ACCESS Newswire / May 19, 2026 / Banyan Gold Corp . (the " Company " or " Banyan ") ( TSXV:BYN )( OTCQB:BYAGF ) is pleased to announce its new Mineral Resource Estimate (" MRE " or the " Mineral Resource ") prepared in accordance with the National Instrument 43-101, Standards for Disclosure for Mineral Projects (" NI-43-101 ") for the AurMac Project (" AurMac " or the " Project "), Yukon Territory. The updated MRE incorporates an additional 42,000 metres (" m ") from 178 diamond drill holes within the Airstrip and Powerline deposits at AurMac (Figure 1). This MRE will support the upcoming Preliminary Economic Assessment (" PEA "; expected second half of 2026) with increases in total indicated and inferred mineral resources from the 2025 MRE.

Highlights: 2026 AurMac Mineral Resource update: Indicated 3.64 million (" M ") ‎ ounces (" oz ") of gold (" Au ") (167.3 M tonnes at 0.68 g/t Au ); Inferred 4.98 M oz of gold (267.2 M tonnes at 0.58 g/t Au ) (see notes; Table 1) A high-grade portion of the deposit at 0.55 g/t Au cut-off with an: Indicated Mineral Resource of 2.45 M oz at 1.00 g/t Au (75.9 M tonnes) and Inferred Mineral Resource of 2.72 M oz at 0.96 g/t Au (88.1 M tonnes) (Table 3); Indicated Mineral Resource grows 60% in contained ounces , with an Indicated grade increase of 8%; Airstrip: Indicated Mineral Resource up 38% in contained ounces , Inferred Mineral Resource up 65% in contained ounces with grade up 11% (Table 3); Strong conversion ratio across the deposit , specifically at Powerline where the Indicated Mineral Resource now contains 2.80 M oz at 0.67 g/t Au (129.5 M tonnes), an increase of 68% with a grade increase of 10% (Table 3); District Scale Potential (District defined by having potential for over 10 million ounces) , demonstrated at the 0.25 g/t Au cut-off with an: Indicated Mineral Resource of 3.93 Moz at 0