Volta drills 0.40% TREO, 44.5 g/t Ga2O3 over 417.8 m at SL25-25

HIGHLIGHTS Drill holes SL25-25 and SL26-27 confirm strong continuity of the Springer gallium and rare earth element (Ga-REE) carbonatite system and successfully extend mineralization to the south. SL25-25 returned 0.40% TREO and 44.5 g/t Ga 2 O 3 over 417.8 m, from 5.2 m to 423.0 m, including a high-grade interval of 174.7 g/t Ga 2 O 3 and 3.73% TREO over 2.2 m, from 88.2 m to 90.4 m. The high-grade interval in SL25-25 demonstrates strong enrichment in critical magnet rare earths, including: Neodymium up to 5,145.9 g/t Nd 2 O 3 and Praseodymium up to 1,701.3 g/t Pr 6 O 11 .

Dysprosium up to 66.9 g/t Dy 2 O 3 and Terbium up to 19.1 g/t Tb 4 O 7 . Gadolinium up to 247.2 g/t Gd 2 O 3 and Samarium up to 467.6 g/t Sm 2 O 3 . Hole SL26-27 intersected 0.36% TREO and 45.8 g/t Ga 2 O 3 over 264.0 m, from 129.0 m to 393.0 m, extending mineralization to the south, including a higher-grade intersection of : 0.61% TREO and 55.4 g/t Ga 2 O 3 over 22.5 m.

Toronto, Ontario--(Newsfile Corp. - June 15, 2026) - Volta Metals Ltd. (CSE: VLTA) (FSE: D0W) (OTCQB: VOLMF) (" Volta " or the " Company ") is pleased to report assay results from drill holes SL25-25 and SL26-27, completed as part of the 2026 winter drill program at its Springer Rare Earth Element deposit (the " Property "), near Sturgeon Falls, Ontario, Canada. From January to April 2026, Volta completed a 13-hole, 5,452-metre (" m ") drill program (SL26-27 to SL26-39) at the Springer deposit. The program was designed to both upgrade the current mineral resource estimate (" MRE ") through infill drilling and expand the known Ga-REE mineralization.

DETAILS Drill hole SL25-25 intersected 417.8 m grading 0.40% Total Rare Earth Oxides (" TREO ") and 44.5 g/t gallium oxide (" Ga₂O₃ ") from 5.2 m to 423.0 m, including a high-grade interval of 3.73% TREO and