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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).

Cortez

Nevada, United States · Producing · 61.5% 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.

Category	Tonnes (Mt)	Grade (g/t Au)	Contained (Moz Au)	As at
Measured	2.60 Mt	1.96 g/t	0.16 Moz	31 Dec 2025
Indicated	227.64 Mt	2.42 g/t	17.89 Moz	31 Dec 2025
Inferred	76.42 Mt	2.40 g/t	5.85 Moz	31 Dec 2025
Total Resources	160.33 Mt	2.14 g/t	11.06 Moz	31 Dec 2025
Proved	2.60 Mt	1.96 g/t	0.16 Moz	31 Dec 2025
Probable	143.09 Mt	2.75 g/t	12.68 Moz	31 Dec 2025
Total Reserves	146.34 Mt	2.75 g/t	12.85 Moz	31 Dec 2025

Sub-category rows are as disclosed (no Reserves-treatment netting); the Total rows honour the Resources treatment and Inferred-policy toggles, so components may not sum to the Total.

Dotted tonnes/grade are derived under the active Resources treatment: tonnes are netted of (or grossed by) the reserve tonnage alongside contained, and grade is re-derived as netted contained ÷ netted tonnes — not the published figures.

Cut-off grade

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Price assumption

US$2000.00/oz · US$1500.00/oz

JORC code year

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Peer benchmark — producing Au projects (282 with resources)Resource size P92Resource grade P66View 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: 40-F: 40-F — d833573dex991.htm (AIF exhibit) · 31 Dec 2025
Reporting code: SK-1300
Convention: inclusive
Currency assumption: US$
Disagreement flags: 12 rows

Current R&R

Resources

Area	Category	Tonnes (Mt)	Au		As at	Source	Provenance
Area	Category	Tonnes (Mt)	Grade (g/t Au)	Contained (Moz Au)	As at	Source	Provenance
Total	Measured	2.60 Mt	1.96 g/t	0.16 Moz	31 Dec 2025	Gold Mineral Resources table — Cortez (61.50%) totalUnverified Evidence record Cortez Measured · Au · as at 2025-12-31 Reported figure Area Whole project Basis attributable Ore tonnes (t) 2601626.0162601625 Grade 1.9600 Contained (oz) 160975.60975609755 Classification Resource Source trail 40-F: 40-F — d833573dex991.htm (AIF exhibit) Gold Mineral Resources table — Cortez (61.50%) total Published 2026-02-27 Verification Approved; not independently verified · Model extracted QA WARN: identical figures appear under ANOTHER area label of this project in the same document — likely one printed estimate stored twice (a summary/grouping line duplicating its leaf). Keep one copy; reject the relabelled twin. QA WARN: recomputed contained 100824.7412 oz vs reported 99000.000 oz (1.84% disagreement) Copies a pre-filled issue record so you can send it through your normal channel.

Reserves

Area	Category	Tonnes (Mt)	Au		As at	Source	Provenance
Area	Category	Tonnes (Mt)	Grade (g/t Au)	Contained (Moz Au)	As at	Source	Provenance
Total	Total Reserves	146.34 Mt	2.75 g/t	12.85 Moz	31 Dec 2025	Gold Mineral Reserves table — Cortez (61.50%) totalUnverified Evidence record Cortez Total Reserve · Au · as at 2025-12-31 Reported figure Area Whole project Basis attributable Ore tonnes (t) 146341463.41463414 Grade 2.7500 Contained (oz) 12845528.455284553 Classification Reserve Source trail 40-F: 40-F — d833573dex991.htm (AIF exhibit) Gold Mineral Reserves table — Cortez (61.50%) total Published 2026-02-27 Verification Approved; not independently verified · Model extracted QA INFO: inclusive-of-reserves flag cleared — the flag describes resource statements; reserve rows carry none. Copies a pre-filled issue record so you can send it through your normal channel.	notes (4) Source: 40-F: 40-F — d833573dex991.htm (AIF exhibit) · published 27 Feb 2026 Ref: Gold Mineral Reserves table — Cortez (61.50%) total SK-1300 — Reporting code of record: SK-1300 @ US$ 1,500/oz — 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: inclusive-of-reserves flag cleared — the flag describes resource statements; reserve rows carry none.
surface	Proved	2.60 Mt	1.96 g/t	0.16 Moz	31 Dec 2025	Gold Mineral Reserves tableUnverified Evidence record Cortez Proved · Au · as at 2025-12-31 Reported figure Area surface Basis attributable Ore tonnes (t) 2601626.0162601625 Grade 1.9600 Contained (oz) 160975.60975609755 Classification Reserve Source trail 40-F: 40-F — d833573dex991.htm (AIF exhibit) Gold Mineral Reserves table Published 2026-02-27 Verification Approved; not independently verified · Model extracted QA INFO: inclusive-of-reserves flag cleared — the flag describes resource statements; reserve rows carry none. QA WARN: recomputed contained 100824.7412 oz vs reported 99000.000 oz (1.84% disagreement) Copies a pre-filled issue record so you can send it through your normal channel.	notes (4) Source: 40-F: 40-F — d833573dex991.htm (AIF exhibit) · published 27 Feb 2026 Ref: Gold Mineral Reserves table
surface	Probable	97.56 Mt	0.92 g/t	2.93 Moz	31 Dec 2025	Gold Mineral Reserves tableUnverified Evidence record Cortez Probable · Au · as at 2025-12-31 Reported figure Area surface Basis attributable Ore tonnes (t) 97560975.6097561 Grade 0.9200 Contained (oz) 2926829.2682926827 Classification Reserve Source trail 40-F: 40-F — d833573dex991.htm (AIF exhibit) Gold Mineral Reserves table Published 2026-02-27 Verification Approved; not independently verified · Model extracted QA INFO: inclusive-of-reserves flag cleared — the flag describes resource statements; reserve rows carry none. QA INFO: recompute differs 1.40% from the printed contained figure, but the printed tonnes/grade/contained are only good to ±6.54% (rounding granularity) — treated as reconciled. Copies a pre-filled issue record so you can send it through your normal channel.	notes (4) Source: 40-F: 40-F — d833573dex991.htm (AIF exhibit) · published 27 Feb 2026
underground	Probable	45.53 Mt	6.67 g/t	9.76 Moz	31 Dec 2025	Gold Mineral Reserves tableUnverified Evidence record Cortez Probable · Au · as at 2025-12-31 Reported figure Area underground Basis attributable Ore tonnes (t) 45528455.28455284 Grade 6.6700 Contained (oz) 9756097.56097561 Classification Reserve Source trail 40-F: 40-F — d833573dex991.htm (AIF exhibit) Gold Mineral Reserves table Published 2026-02-27 Verification Approved; not independently verified · Model extracted QA INFO: inclusive-of-reserves flag cleared — the flag describes resource statements; reserve rows carry none. Copies a pre-filled issue record so you can send it through your normal channel.	notes (4) Source: 40-F: 40-F — d833573dex991.htm (AIF exhibit) · published 27 Feb 2026 Ref: Gold Mineral Reserves table