Allied Gold Announces Commencement of Ore Processing at Sadiola’s Phase 1 Expansion, Progress on Capital Efficient Modular Phase 2 Expansion, and Update on Production for Q4

TORONTO, Dec. 21, 2025 (GLOBE NEWSWIRE) -- Allied Gold Corporation (TSX: AAUC, NYSE: AAUC) (“Allied” or the “Company”) is pleased to announce that it has commenced operations and has begun processing ore through the fresh ore comminution circuit installed pursuant to the Phase 1 expansion at Sadiola, marking a significant milestone in the transformational growth strategy for this long-life asset. The Phase 1 expansion is aimed at increasing production, reducing costs and materially increasing cash flows through a phased expansion approach.