Bonterra Reports Significant Mineral Resource Growthat Bachelor and Moroy, 100% owned Depositsand Provides Corporate Updates

Bonterra Resources has delivered substantial mineral resource growth at its 100%-owned Desmaraisville Gold Project in Quebec, with updated estimates prepared by P&E Mining Consultants showing significant increases across both the Bachelor and Moroy deposits. The combined 2026 mineral resource estimates total 228,000 ounces of measured and indicated resources at an average grade of 3.98 g/t gold within 1.78 million tonnes, alongside 133,000 ounces of inferred resources at 4.23 g/t gold within 0.978 million tonnes.

The resource growth is particularly notable when compared to the 2021 estimates, with measured and indicated contained gold ounces increasing by 42% and inferred resources growing by 28%. This expansion was driven by the discovery of the Hewfran mineralized zone extension and additional drilling totaling 17,761 metres completed between 2023 and 2025. The Bachelor deposit now contains 113,000 ounces of measured and indicated resources at 3.87 g/t gold, while Moroy contributes 115,000 ounces at 4.10 g/t gold.

Strategically, all mineral resources are positioned within 900 metres of the existing Bachelor Mill Complex, which provides significant operational advantages for potential mine restart scenarios. The company benefits from already-permitted infrastructure on mining concessions and mining leases, reducing both capital requirements and development timelines. The updated resource estimates also incorporate more robust geological modeling based on oriented core drilling and revised interpretations that reflect improved understanding of the deposit geology.

Looking forward, Bonterra plans to commence its 2026 exploration program at Desmaraisville, focusing on high-potential targets to further expand the resource base. The company is well-positioned to leverage its strategic location near existing infrastructure, substantial resource growth, and 100% ownership to advance toward potential mining operations. The updated estimates were prepared using current industry standards with a long-term gold price assumption of US$2,850 per ounce, reflecting the improved economics of the deposits in the current commodity price environment.