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Reporting assumptions

These choices persist and are added to shared URLs.

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).

Arthur Gold

Nevada, United States of America · Developing · 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	—	—	—	—
Indicated	164.14 Mt	0.84 g/t	4.41 Moz	31 Dec 2025
Inferred	219.79 Mt	0.90 g/t	6.34 Moz	31 Dec 2025
Total Resources	383.93 Mt	0.87 g/t	10.75 Moz	31 Dec 2025
Proved	—	—	—	—
Probable	87.64 Mt	1.75 g/t	4.94 Moz	31 Dec 2025
Total Reserves	87.64 Mt	1.75 g/t	4.94 Moz	31 Dec 2025

Ag

Category	Tonnes (Mt)	Grade (g/t Ag)	Contained (Moz Ag)	As at
Measured	—	—	—	—
Indicated	164.14 Mt	3.33 g/t	17.57 Moz	31 Dec 2025
Inferred	219.79 Mt	2.26 g/t	15.96 Moz	31 Dec 2025
Total Resources	383.93 Mt	2.72 g/t	33.53 Moz	31 Dec 2025
Proved	—	—	—	—
Probable

Cut-off grade

0.2800 g/t Au

Price assumption

US$2150.00/oz · US$23.00/oz · US$1950.00/oz · US$19.50/oz

JORC code year

—

Peer benchmark — developing Au projects (284 with resources)Resource size P94Resource grade P43View 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: 20-F: 20-F · 31 Dec 2025
Reporting code: SK-1300
Convention: exclusive
Currency assumption: US$

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
Indicated	164.14 Mt	0.84 g/t	4.41 Moz	3.33 g/t	17.57 Moz	31 Dec 2025	Summary Mineral Resource for gold at 31 December 2025Unverified Evidence record Arthur Gold Indicated · Au · as at 2025-12-31 Reported figure Area Whole project Basis 100% Ore tonnes (t) 164140000.0000 Grade 0.8400 Contained (oz) 4410000.0000 Classification Resource Source trail 20-F: 20-F Summary Mineral Resource for gold at 31 December 2025 Published 2026-03-26 Verification Approved; not independently verified · Model extracted AGENT-QA 2026-07-11 (t6 recovery first gate, operator-delegated): post-#133 re-extraction verified - structure, single as-at vintage, reported basis and spot-checks against the printed tables. Approved. 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
Probable	87.64 Mt	1.75 g/t	4.94 Moz	2.76 g/t	7.78 Moz	31 Dec 2025	Summary Mineral Reserve for gold at 31 December 2025Unverified Evidence record Arthur Gold Probable · Au · as at 2025-12-31 Reported figure Area Whole project Basis 100% Ore tonnes (t) 87640000.0000 Grade 1.7500 Contained (oz) 4940000.0000 Classification Reserve Source trail 20-F: 20-F Summary Mineral Reserve for gold at 31 December 2025 Published 2026-03-26 Verification Approved; not independently verified · Model extracted AGENT-QA 2026-07-11 (t6 recovery first gate, operator-delegated): post-#133 re-extraction verified - structure, single as-at vintage, reported basis and spot-checks against the printed tables. Approved. Copies a pre-filled issue record so you can send it through your normal channel.	notes (4) Source: 20-F: 20-F · published 26 Mar 2026 Ref: Summary Mineral Reserve for gold at 31 December 2025 SK-1300 — Reporting code of record: SK-1300 Cutoff 0.28 g/t Au — Cut-off grade assumption from the source statement. @ US$ 1,950/oz — Metal price assumption used to derive this estimate. QA notes: AGENT-QA 2026-07-11 (t6 recovery first gate, operator-delegated): post-#133 re-extraction verified - structure, single as-at vintage, reported basis and spot-checks against the printed tables. Approved.
Total Reserves	87.64 Mt	1.75 g/t	4.94 Moz	2.76 g/t	7.78 Moz	31 Dec 2025	Summary Mineral Reserve for gold at 31 December 2025Unverified Evidence record Arthur Gold Total Reserve · Au · as at 2025-12-31 Reported figure Area Whole project Basis 100% Ore tonnes (t) 87640000.0000 Grade 1.7500 Contained (oz) 4940000.0000 Classification Reserve Source trail 20-F: 20-F Summary Mineral Reserve for gold at 31 December 2025 Published 2026-03-26 Verification Approved; not independently verified · Model extracted AGENT-QA 2026-07-11 (t6 recovery first gate, operator-delegated): post-#133 re-extraction verified - structure, single as-at vintage, reported basis and spot-checks against the printed tables. Approved. Copies a pre-filled issue record so you can send it through your normal channel.	notes (4) Source: 20-F: 20-F