Announcement • Sep 04

Errington Metals Inc. Reports Initial 2026 Drilling Results At the Errington Zone

Errington Metals Corp. announced initial results from its 2026 Spring exploration program at the Errington Zone. The results include multiple polymetallic intercepts and, importantly, continue to demonstrate the potential to grow the deposit. Drilling has extended the Company's understanding of mineralization in the eastern portion of the zone, where elevated gold and silver values continue to contribute meaningfully to overall grade and potential value per tonne. The 2026 program was designed to test the depth extension along the full strike extent of the Errington mineralized zone, including the West and 1500 areas, where assays remain pending. At Errington Main, drilling tested extensions of mineralization within the major fault blocks, with an initial focus on the eastern portion of the Main and Christie Blocks. Results continue to show elevated gold associated with massive sulphide mineralization in the eastern part of Errington, building on the higher precious metals signature first recognized in 2025 drilling, when drill hole EME-25-047 intersected 21.5 m grading 0.38% Cu, 0.08% Zn, 0.13% Pb, 1.23 g/t Au and 24.7 g/t Ag. Overall, the new drilling suggests that massive sulphide mineralization persists at depth at grades comparable to the upper portion of Errington, while the eastern part of the zone continues to show elevated gold values that may add to the value of future tonnes. All holes drilled encountered mineralization within the Vermilion chert-carbonate breccia horizon or as stringer sulphides within the footwall volcanic rocks. Holes that intersected stringer mineralization may point to additional offset or folding of the massive sulphide horizon, providing further targets for follow-up drilling. Borehole electromagnetic surveys of the 2026 drill holes have been initiated to detect conductive sulphide mineralization off-hole, which is expected to provide an important targeting tool for testing deeper extensions of the system. Previously, mineralized horizons at Errington had been interpreted to be folded at depth, which suggested the system could be constrained near the bottom of a hinge zone. The most recent drilling supports a more encouraging interpretation: mineralization is likely faulted and offset down-dip rather than terminating, meaning the Errington Zone remains open at depth and has clear potential for continued expansion with additional drilling. Table 1: Assay results to date for holes drilled at Errington Main. Hole ID Zone From To Width Cu Zn Pb Au Ag CuEq (m) (m) (m) (%) (%) (%) (gpt) (gpt) (%) EME-26-082 Christie 399.2 399.7 0.5 0.17 0.04 0.01 0.07 1.8 0.24 EME-26-086 Christie 403.3 410.3 6.9 0.99 0.12 0.07 0.33 22.3 1.44 EME-26-086 Christie 427.2 438.1 11.0 1.75 8.63 2.05 1.66 104.5 6.41 EME-26-089 Christie 394.0 413.3 19.3 0.69 3.29 1.12 0.83 42.6 2.68 EME-26-100 Christie 443.1 455.4 12.3 0.43 6.10 1.41 1.22 41.7 3.49 EME-26-075 Main 339.2 345.2 6.0 0.10 3.40 1.28 0.61 42.2 2.00 EME-26-076A Main 395.9 401.2 5.3 0.70 0.02 0.33 0.04 27.1 1.01 EME-26-081 Main 371.0 373.2 2.3 0.10 0.34 0.63 0.15 12.5 0.50 EME-26-081 Main 383.5 386.0 2.5 0.02 2.23 0.19 0.11 4.6 0.77 EME-26-083 Main 397.6 406.6 8.9 0.69 8.78 2.57 0.91 86.2 4.83 EME-26-085 Main 381.5 384.0 2.5 0.31 2.22 0.88 0.34 26.8 1.52 EME-26-087A Main 421.2 425.1 3.9 0.08 0.12 0.27 0.06 7.9 0.27 1. Intervals reported are downhole depths. True width represents 70%-100% true width as drill holes are designed perpendicular to the regional stratigraphic orientation. 2. Cu Eq is copper equivalent calculated as Cu (%) + Zn (%) x 0.273 + Pb (%) x 0.167 + Ag (gpt) x 0.0081 + Au (gpt) x 0.6752. Metal prices used Copper $4.5/lb ($9921/tonne), Zinc $1.3/lb ($2866/tonne), Lead $0.90/lb ($1984/tonne), Gold $2500/oz, Silver $30/oz, Recoveries are set at Copper 90%, Zinc 85%, Lead 75%, Gold 75%, and Silver 75%. 3. Copper equivalent values are provided for illustrative purposes only. No allowance has been made for payability, smelter terms, refining charges, penalties, or deleterious elements.

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Errington Metals Inc. Reports Initial 2026 Drilling Results At the Errington Zone

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