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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).

Norte Abierto

Chile · Developing · 50.0% 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	155.40 Mt	0.61 g/t	3.00 Moz	31 Dec 2025
Indicated	1,051.00 Mt	0.51 g/t	17.20 Moz	31 Dec 2025
Inferred	762.20 Mt	0.40 g/t	10.60 Moz	31 Dec 2025
Total Resources	1,968.60 Mt	0.48 g/t	30.80 Moz	31 Dec 2025
Proved	—	—	—	—
Probable	1,042.20 Mt	0.65 g/t	21.60 Moz	31 Dec 2025
Total Reserves	1,197.60 Mt	0.60 g/t	23.20 Moz	31 Dec 2024

Ag

Category	Tonnes (Mt)	Grade (g/t Ag)	Contained (Moz Ag)	As at
Measured	77.70 Mt	1.21 g/t	3.00 Moz	31 Dec 2025
Indicated	525.50 Mt	1.07 g/t	18.10 Moz	31 Dec 2025
Inferred	381.10 Mt	1.00 g/t	12.60 Moz	31 Dec 2025
Total Resources	984.30 Mt	1.05 g/t	33.70 Moz	31 Dec 2025
Proved	—	—	—	—
Probable

Cu

Category	Tonnes (Mt)	Grade (% Cu)	Contained (Mt Cu)	As at
Measured	116.00 Mt	0.23%	0.20 Mt Cu	31 Dec 2025
Indicated	959.80 Mt	0.20%	1.80 Mt Cu	31 Dec 2025
Inferred	746.60 Mt	0.20%	1.60 Mt Cu	31 Dec 2025
Total Resources	1,822.40 Mt	0.20%	3.60 Mt Cu	31 Dec 2025
Proved	—	—	—	—
Probable

Cut-off grade

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Price assumption

US$23.00/oz · US$2000.00/oz · US$3.50/oz · US$25.00/oz · US$1700.00/oz · US$2.75/oz · US$22.00/oz

JORC code year

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Peer benchmark — developing Au projects (284 with resources)Resource size P99Resource grade P28View 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: 13 rows

Current R&R

Resources

Category	Tonnes (Mt)	Au		Ag		Cu		As at	Source	Provenance
Category	Tonnes (Mt)	Grade (g/t Au)	Contained (Moz Au)	Grade (g/t Ag)	Contained (Moz Ag)	Grade (% Cu)	Contained (Mt Cu)	As at	Source	Provenance
Measured	77.70–155.40 Mt	0.61 g/t	3.00 Moz	1.21 g/t	3.00 Moz	0.23%	0.20 Mt Cu	31 Dec 2025

Reserves

Category	Tonnes (Mt)	Au		Ag		Cu		As at	Source	Provenance
Category	Tonnes (Mt)	Grade (g/t Au)	Contained (Moz Au)	Grade (g/t Ag)	Contained (Moz Ag)	Grade (% Cu)	Contained (Mt Cu)	As at	Source	Provenance
Probable	1,042.20 Mt	0.65 g/t	21.60 Moz	1.61 g/t	54.00 Moz	0.24%	2.40 Mt Cu	31 Dec 2025	Copper Reserves at December 31, 2025Unverified Evidence record Norte Abierto Probable · Cu · as at 2025-12-31 Reported figure Area Whole project Basis attributable Ore tonnes (t) 1042200000 Grade 0.2400 Contained (t Cu) 2400000 Classification Reserve Source trail 10-K: 10-K Copper Reserves at December 31, 2025 Published 2026-02-19 Verification Approved; not independently verified · Model extracted QA INFO: recompute differs 4.22% from the printed contained figure, but the printed tonnes/grade/contained are only good to ±6.26% (rounding granularity) — treated as reconciled. Copies a pre-filled issue record so you can send it through your normal channel.	notes (4) Source: 10-K: 10-K · published 19 Feb 2026 Ref: Copper Reserves at December 31, 2025 SK-1300 — Reporting code of record: SK-1300 @ US$ 3.5/t — Metal price assumption used to derive this estimate. attrib — Figures are net to the issuer's ownership interest as reported (attributable basis) — NOT 100% of the project. QA notes: QA INFO: recompute differs 4.22% from the printed contained figure, but the printed tonnes/grade/contained are only good to ±6.26% (rounding granularity) — treated as reconciled.
Total Reserves	1,197.60 Mt	0.60 g/t	23.20 Moz	1.52 g/t	58.60 Moz	0.22%	2.60 Mt Cu	31 Dec 2024	Copper Reserves at December 31, 2024Unverified Evidence record Norte Abierto Total Reserve · Cu · as at 2024-12-31 Reported figure Area Whole project Basis attributable Ore tonnes (t) 1197600000 Grade 0.2200 Contained (t Cu) 2600000 Classification Reserve Source trail 10-K: 10-K Copper Reserves at December 31, 2024 Published 2025-02-21 Verification Approved; not independently verified · Model extracted QA INFO: recompute differs 1.34% from the printed contained figure, but the printed tonnes/grade/contained are only good to ±6.13% (rounding granularity) — treated as reconciled. \| tranche12 QA: verified against printed source table Copies a pre-filled issue record so you can send it through your normal channel.	notes (5) Source: