Troilus drills 157.5 m grading 0.95 g/t AuEq at Z87 Reserve Pit

*0.95 g/t AuEq (0.82 g/t Au, 0.88 g/t Ag, 0.08 % Cu), Including 1.37 g/t AuEq (1.28 g/t Au, 0.99 g/t Ag, 0.04 % Cu) Over 28 m MONTREAL, June 25, 2026 (GLOBE NEWSWIRE) -- Troilus Mining Corp. (“Troilus” or the “Company”) ( TSX: TLG; OTCQX: CHXMF; FSE: CM5 ), is pleased to announce the first 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 13 drill holes totalling 3,718 metres, following the exploration program outlined in the Company’s March 31, 2026 press release . The ongoing Z87 optimization program is designed to support future mine planning by targeting inferred mineralization and previously unsampled intervals from historic drilling within the hangingwall of the main ore zone.

All results reported today are located 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 improve future mine planning, including potential resource conversion, pit sequencing optimization, strip ratio improvements and early-year mill feed flexibility. Z87 Intercept Highlights (see Figure 1) : Hole 87-26-505 intersected 0.95 g/t gold equivalent (“AuEq”) (0.82 g/t Au, 0.88 g/t Ag, 0.08 % Cu)  over 157.7 m, including 1.37 g/t AuEq (1.28 g/t Au, 0.99 g/t Ag, 0.04 % Cu) over 28 m, also including 1.68 g/t AuEq (1.47 g/t Au, 0.91 g/t Ag, 0.12 % Cu) over 30.9 m, and also including 1.16 g/t AuEq (0.87 g/t Au, 1.54 g/t Ag, 0.17 % Cu) over 19 m starting at 238 m downhole. See Figure 2.

Hole 87-26-508 intersected 1.10 g/t gold equivalent (“AuEq”) (0.90 g/t Au, 2.06 g/t Ag, 0.11 % Cu)  over 96 m, including 2.59 g/t AuEq (2.28 g/t Au, 2.48 g/t Ag, 0.