Alamos Gold Extends High-Grade Mineralization Across Multiple Targets within Mulatos District Including PDA, Cerro Pelon, and New Discovery at Halcon

All amounts are in United States dollars, unless otherwise stated TORONTO, Jan. 21, 2026 (GLOBE NEWSWIRE) - Alamos Gold Inc. ( TSX:AGI; NYSE:AGI ) (“Alamos” or the “Company”) today reported new results from ongoing surface exploration drilling within the Mulatos District. Drilling continues to extend high-grade gold mineralization beyond Mineral Reserves at Puerto Del Aire (“PDA”), and Mineral Resources at Cerro Pelon. Additionally, drilling within a new area of focus at Halcon has intersected wide intervals of significant sulphide-hosted gold mineralization. Cerro Pelon, Halcon and other targets across the District including La Yaqui Grande, represent upside to the PDA project as potential sources of additional higher-grade sulphide ore. The PDA project will include the construction of a mill to process higher-grade sulphide ore from PDA, opening up new opportunities to define and incorporate additional sulphide ore from across the District. PDA remains on track for initial