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Reporting assumptions

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Ownership basis

Show the full project inventory before ownership adjustment.

Display scale

Display contained quantities in millions of ounces or tonnes.

Resource treatment

Normalise Resources to exclude Reserves: where a project is flagged inclusive, net Reserves out of Resources so the figure is additional Resources beyond Reserves. Unknown-convention rows are shown as stated.

Resource total

Total Resource includes Inferred (JORC convention). Totals are re-derived from category rows wherever the document discloses them.

Recovery basis

Show the issuer's headline recoverable figure as reported. Lithium-brine reserves already have the brine-processing recovery factor applied; everything else is shown as stated.

Commodity view

Primary view: each commodity in its own contained unit (oz / t).

Rochester

Nevada, United States · Producing · 100.0% ownedUnverified

Current R&R by category

Whole-project rollup at the latest vintage per category: printed project-level rows are preferred, and mining areas are summed (tonnes-weighted grade) only where the issuer prints no project-level row. Per-area and per-source detail in the Current R&R table below.

Au

Category	Tonnes (Mt)	Grade (g/t Au)	Contained (Moz Au)	As at
Measured	133.35 Mt	0.06 g/t	0.25 Moz	31 Dec 2025
Indicated	35.00 Mt	0.09 g/t	0.10 Moz	31 Dec 2025
Inferred	138.13 Mt	0.07 g/t	0.32 Moz	31 Dec 2025
Total Resources	306.47 Mt	0.07 g/t	0.68 Moz	31 Dec 2025
Proved	402.56 Mt	0.09 g/t	1.16 Moz	31 Dec 2025
Probable	45.10 Mt	0.12 g/t	0.17 Moz	31 Dec 2025
Total Reserves	447.66 Mt	0.09 g/t	1.33 Moz	31 Dec 2025

Ag

Category	Tonnes (Mt)	Grade (g/t Ag)	Contained (Moz Ag)	As at
Measured	133.35 Mt	9.01 g/t	38.62 Moz	31 Dec 2025
Indicated	35.00 Mt	11.45 g/t	12.88 Moz	31 Dec 2025
Inferred	138.13 Mt	12.37 g/t	54.93 Moz	31 Dec 2025
Total Resources	306.47 Mt	10.80 g/t	106.43 Moz	31 Dec 2025
Proved	402.56 Mt	12.81 g/t	165.80 Moz	31 Dec 2025
Probable

Cut-off grade

4.1200 g/t Au · 4.1200 g/t Ag

Price assumption

US$2500.00/oz · US$2200.00/oz

JORC code year

—

Peer benchmark — producing Ag projects (118 with resources)Resource size P79Resource grade P39View on grade-tonnage chart →

Percentile of this project's current total Resource among covered peers (P100 = largest / highest grade). Basis and Inferred toggles apply.

Data quality

Latest source: 10-K: 10-K · 31 Dec 2025
Reporting code: SK-1300
Convention: exclusive
Currency assumption: US$
Disagreement flags: 5 rows

Current R&R

Resources

Category	Tonnes (Mt)	Au		Ag		As at	Source	Provenance
Category	Tonnes (Mt)	Grade (g/t Au)	Contained (Moz Au)	Grade (g/t Ag)	Contained (Moz Ag)	As at	Source	Provenance
Measured	133.35 Mt	0.06 g/t	0.25 Moz	9.01 g/t	38.62 Moz	31 Dec 2025	Summary Gold Mineral Resources at End of the Fiscal Year Ended December 31, 2025Unverified Evidence record Rochester Measured · Au · as at 2025-12-31 Reported figure Area Whole project Basis 100% Ore tonnes (t) 133346000.0000 Grade 0.0600 Contained (oz) 253000.0000 Classification Resource Source trail 10-K: 10-K Summary Gold Mineral Resources at End of the Fiscal Year Ended December 31, 2025 Published 2026-02-18 Verification Approved; not independently verified · Model extracted QA WARN: unrecognised source metal label 'Grade (grams/tonne)' for Au — verify the commodity mapping. QA INFO: recompute differs 1.67% from the printed contained figure, but the printed tonnes/grade/contained are only good to ±6.20% (rounding granularity) — treated as reconciled. Copies a pre-filled issue record so you can send it through your normal channel.

Reserves

Category	Tonnes (Mt)	Au		Ag		As at	Source	Provenance
Category	Tonnes (Mt)	Grade (g/t Au)	Contained (Moz Au)	Grade (g/t Ag)	Contained (Moz Ag)	As at	Source	Provenance
Proved	402.56 Mt	0.09 g/t	1.16 Moz	12.81 g/t	165.80 Moz	31 Dec 2025	Summary Gold Mineral Reserves at End of the Fiscal Year Ended December 31, 2025Unverified Evidence record Rochester Proved · Au · as at 2025-12-31 Reported figure Area Whole project Basis 100% Ore tonnes (t) 402556000.0000 Grade 0.0900 Contained (oz) 1162000.0000 Classification Reserve Source trail 10-K: 10-K Summary Gold Mineral Reserves at End of the Fiscal Year Ended December 31, 2025 Published 2026-02-18 Verification Approved; not independently verified · Model extracted QA WARN: unrecognised source metal label 'Grade (grams/tonne)' for Au — verify the commodity mapping. Copies a pre-filled issue record so you can send it through your normal channel.	notes (4) Source: 10-K: 10-K · published 18 Feb 2026 Ref: Summary Gold Mineral Reserves at End of the Fiscal Year Ended December 31, 2025 SK-1300 — Reporting code of record: SK-1300 Cutoff 4.12 g/t Au — Cut-off grade assumption from the source statement. @ US$ 2,200/oz — Metal price assumption used to derive this estimate. QA notes: QA WARN: unrecognised source metal label 'Grade (grams/tonne)' for Au — verify the commodity mapping.
Probable	45.10 Mt	0.12 g/t	0.17 Moz	11.04 g/t	16.01 Moz	31 Dec 2025	Summary Silver Mineral Reserves at End of the Fiscal Year Ended December 31, 2025Unverified Evidence record Rochester Probable · Ag · as at 2025-12-31 Reported figure Area Whole project Basis 100% Ore tonnes (t) 45100000.0000 Grade 11.0400 Contained (oz) 16014000.0000 Classification Reserve Source trail 10-K: 10-K Summary Silver Mineral Reserves at End of the Fiscal Year Ended December 31, 2025 Published 2026-02-18 Verification Approved; not independently verified · Model extracted QA WARN: unrecognised source metal label 'Grade (grams/tonne)' for Ag — verify the commodity mapping. Copies a pre-filled issue record so you can send it through your normal channel.	notes (4) Source: 10-K: 10-K · published 18 Feb 2026 Summary Silver Mineral Reserves at End of the Fiscal Year Ended December 31, 2025
Total Reserves	447.66 Mt	0.09 g/t	1.33 Moz	12.63 g/t	181.81 Moz	31 Dec 2025	Summary Silver Mineral Reserves at End of the Fiscal Year Ended December 31, 2025Unverified Evidence record Rochester Total Reserve · Ag · as at 2025-12-31 Reported figure Area Whole project Basis 100% Ore tonnes (t) 447656000.0000 Grade 12.6300 Contained (oz) 181814000.0000 Classification Reserve Source trail 10-K: 10-K Summary Silver Mineral Reserves at End of the Fiscal Year Ended December 31, 2025 Published 2026-02-18 Verification Approved; not independently verified · Model extracted QA WARN: unrecognised source metal label 'Grade (grams/tonne)' for Ag — verify the commodity mapping. Copies a pre-filled issue record so you can send it through your normal channel.	notes (4) Source: 10-K: 10-K · published 18 Feb 2026