Troilus Drills 1.10 g/t AuEq Over 103 m as Z87 Optimization Program Continues to Strengthen Mine Planning

*1.10 G/T AUEQ (0.98 G/T AU, 0.54 G/T AG, 0.07 % CU) OVER 103 M MONTREAL, July 23, 2026 (GLOBE NEWSWIRE) -- Troilus Mining Corp. (“Troilus” or the “Company”) ( TSX: TLG; OTCQX: CHXMF; FSE: CM5 ), is pleased to announce the third batch of results from the Z87 optimization drill program, as part of its ongoing 2026 Exploration activities at its Troilus Project located in north-central Quebec, Canada. The results reported include 10 drill holes totalling 4,230 metres, following the exploration program outlined in the Company’s March 31, 2026 press release . The on-going Z87 optimization program is designed to upgrade inferred material and target unsampled intervals from historic drilling within the hangingwall of the main ore zone.

All results returned are within the Z87 reserve pit, as defined in the Feasibility Study ( see May 14, 2024 press release ) and support the Company’s objective of evaluating opportunities to enhance future mine planning, including potential resource conversion, pit sequencing optimization, strip ratio improvements and early-year mill feed. Z87 Intercept Highlights (see Figure 1) : Hole 87-26-484 intersected 1.10 g/t gold equivalent (“AuEQ”) (0.98 g/t Au, 0.54 g/t Ag, 0.07% Cu) over 103 m, including 2.10 g/t AuEQ (1.86g/t Au, 0.84 g/t Ag, 0.15 % Cu) over 34 m starting at 442 m downhole from an area of inferred material within the Z87 reserve pit.   Hole 87-26-492 intersected 1.98 g/t gold equivalent (“AuEQ”) (1.41 g/t Au, 33.49 g/t Ag, 0.10 % Cu) over 14 m, including 9.87g/t AuEQ (5.95 g/t Au, 260.80 g/t Ag, 0.37 % Cu) over 1.5m from the Z87 hangingwall starting at 162 m downhole.   Hole 87-26-512 intersected 0.92 g/t gold equivalent (“AuEQ”) (0.79 g/t Au, 0.94 g/t Ag, 0.07 % Cu) over 93 m, including 2.30 g/t AuEQ (2.13 g/t Au, 1.34 g/t Ag, 0.10