Nuvau Winter Drilling at Thundermine Returns 5.28 g/t Au over 6.1 m, Including 7.22 g/t Au over 3.1 m

About this update from Nuvau Minerals Inc.

Results suggestive of a gold-bearing hydrothermal system and multiple mineralization styles in a largely underexplored target area Toronto, Ontario--(Newsfile Corp. - June 26, 2026) - Nuvau Minerals Inc. (TSXV: NMC) reports encouraging results from its winter drilling campaign at the Thundermine (also called Thunderwood) target area in the Company's 100%-owned Matagami Mining Camp. Drilling successfully intersected both volcanic massive sulphide (VMS)-related alteration and gold-bearing zones associated with favourable host rocks and structures, providing important geological information and confirming key elements of the historical exploration results. "This single hole confirms both the camp's signature VMS-style mineralization and the potential to define a significant gold-bearing hydrothermal system," said Christina McCarthy, Nuvau's Chief Executive Officer. "It's the first Nuvau hole at Thundermine, and the first at the target in nearly four decades. We are excited that the alteration and veining intersected in our hole appears to be significantly wider than what shallow historical drilling intersected, especially because this hole is approximately 200 metres below where previous explorers stopped. This suggests that we could be tracking a potentially large-scale, untested gold system." McCarthy added, "Spring runoff prevented positioning the drill rig where we intended, and drilling was suspended before the hole could exit the prospective quartz porphyry intrusive body, leaving the full extent of the intrusive and associated hydrothermal system untested. With improved ground conditions this summer, we can orient the rig to intersect the structures at the optimal angle to better define the geometry and continuity of the gold system." Highlights from a successful winter exploration program

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