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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).

Boddington

Western Australia, Australia · 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	97.30 Mt	0.52 g/t	1.60 Moz	31 Dec 2025
Indicated	168.20 Mt	0.49 g/t	2.60 Moz	31 Dec 2025
Inferred	3.80 Mt	0.50 g/t	0.10 Moz	31 Dec 2025
Total Resources	244.70 Mt	0.54 g/t	4.20 Moz	31 Dec 2024
Proved	278.60 Mt	0.64 g/t	5.70 Moz	31 Dec 2024
Probable	281.20 Mt	0.57 g/t	5.10 Moz	31 Dec 2024
Total Reserves	545.10 Mt	0.58 g/t	10.20 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.

Cu

Category	Tonnes (Mt)	Grade (% Cu)	Contained (Mt Cu)	As at
Measured	97.30 Mt	0.12%	0.10 Mt Cu	31 Dec 2025
Indicated	168.20 Mt	0.11%	0.20 Mt Cu	31 Dec 2025
Inferred	3.80 Mt	0.10%	3.8 kt Cu	31 Dec 2025
Total Resources	244.70 Mt	0.12%	0.30 Mt Cu	31 Dec 2024
Proved	271.00 Mt	0.09%	0.20 Mt Cu	31 Dec 2025
Probable

Cut-off grade

18.2400 g/t Au · 18.2400 % Cu · 16.2000 % Cu

Price assumption

US$2300.00/oz · US$2000.00/oz · US$3.75/oz · US$1700.00/oz · US$1400.00/oz

JORC code year

—

Peer benchmark — producing Au projects (282 with resources)Resource size P73Resource grade P20View 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: 16 rows

Current R&R

Resources

Area	Category	Tonnes (Mt)	Au		Cu		As at	Source	Provenance
Area	Category	Tonnes (Mt)	Grade (g/t Au)	Contained (Moz Au)	Grade (% Cu)	Contained (Mt Cu)	As at	Source	Provenance
Total	Measured	97.30 Mt	0.52 g/t	1.60 Moz	0.12%	0.10 Mt Cu	31 Dec 2025	Gold Resources at December 31, 2025Unverified

Total

Indicated

168.20 Mt

0.49 g/t

2.60 Moz

0.11%

0.20 Mt Cu

31 Dec 2025

Gold Resources at December 31, 2025Unverified

notes (5)

Source: 10-K: 10-K · published 19 Feb 2026

Ref: Gold Resources at December 31, 2025

SK-1300 — Reporting code of record: SK-1300
@ US$ 2,300/oz — Metal price assumption used to derive this estimate.
excl — Stated Resources are EXCLUSIVE of Reserves — they sit on top of the reserve, so decks quoting inclusive resources will show a larger figure (inclusive = this row + the converted reserve).
attrib — Figures are net to the issuer's ownership interest as reported (attributable basis) — NOT 100% of the project.

QA notes:

QA WARN: identical figures to a stored row of the same company/project/area/category under a DIFFERENT as-at date — likely a re-presentation (DFS / annual statement / global MRE restating an already-stored estimate). Keep one operative copy; verify supersession before storing both. QA INFO: recompute differs 1.92% from the printed contained figure, but the printed tonnes/grade/contained are only good to ±2.97% (rounding granularity) — treated as reconciled.

Reserves

Area	Category	Tonnes (Mt)	Au		Cu		As at	Source	Provenance
Area	Category	Tonnes (Mt)	Grade (g/t Au)	Contained (Moz Au)	Grade (% Cu)	Contained (Mt Cu)	As at	Source	Provenance
Total	Proved	271.00–278.60 Mt	0.64 g/t	5.70 Moz	0.09%	0.20 Mt Cu	31 Dec 2025 *	Copper Reserves at December 31, 2025Unverified Evidence record Boddington Proved · Cu · as at 2025-12-31 Reported figure Area Whole project Basis attributable Ore tonnes (t) 271000000.0000 Grade 0.0900 Contained (t Cu) 200000.0000 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 21.95% from the printed contained figure, but the print is exactly consistent with the recompute at the printed tonnes/grade/contained granularity (rounding-interval overlap) — treated as reconciled. Copies a pre-filled issue record so you can send it through your normal channel.	notes (5) Source: 10-K: 10-K · published 19 Feb 2026 Ref: Copper Reserves at December 31, 2025 SK-1300 — Reporting code of record: SK-1300 Cutoff 18.24 % Cu — Cut-off grade assumption from the source statement. @ US$ 3.75/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 21.95% from the printed contained figure, but the print is exactly consistent with the recompute at the printed tonnes/grade/contained granularity (rounding-interval overlap) — treated as reconciled.
Total	Probable	274.10–281.20 Mt	0.57 g/t	5.10 Moz	0.10%	0.30 Mt Cu	31 Dec 2024 *	Gold Reserves at December 31, 2024 — Total Boddington, AustraliaUnverified Evidence record Boddington Probable · Au · as at 2024-12-31 Reported figure Area Whole project Basis attributable Ore tonnes (t) 281200000.0000 Grade 0.5700 Contained (oz) 5100000.0000 Classification Reserve Source trail 10-K: 10-K Gold Reserves at December 31, 2024 — Total Boddington, Australia Published 2025-02-21 Verification Approved; not independently verified · Model extracted QA INFO: recompute differs 1.04% from the printed contained figure, but the printed tonnes/grade/contained are only good to ±1.88% (rounding granularity) — treated as reconciled. \| tranche12b QA: verified against print/narrative cross-foots Copies a pre-filled issue record so you can send it through your normal channel.
Total	Total Reserves	545.10 Mt	0.58 g/t	10.20 Moz	0.09%	0.50 Mt Cu	31 Dec 2025	Copper Reserves at December 31, 2025Unverified Evidence record Boddington Total Reserve · Cu · as at 2025-12-31 Reported figure Area Whole project Basis attributable Ore tonnes (t) 545100000.0000 Grade 0.0900 Contained (t Cu) 500000.0000 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 1.88% from the printed contained figure, but the printed tonnes/grade/contained are only good to ±11.56% (rounding granularity) — treated as reconciled. Copies a pre-filled issue record so you can send it through your normal channel.	notes (4) Source:
Open Pit	Proved	265.30–276.50 Mt	0.62 g/t	5.30 Moz	0.09%	0.20 Mt Cu	31 Dec 2025 *	Gold Reserves at December 31, 2025Unverified Evidence record Boddington Proved · Au · as at 2025-12-31 Reported figure Area Open Pit Basis attributable Ore tonnes (t) 265300000.0000 Grade 0.6200 Contained (oz) 5300000.0000 Classification Reserve Source trail 10-K: 10-K Gold Reserves at December 31, 2025 Published 2026-02-19 Verification Approved; not independently verified · Model extracted QA WARN: unrecognised source metal label 'Grade (g/tonne)' for Au — verify the commodity mapping. Copies a pre-filled issue record so you can send it through your normal channel.	notes (5)
Open Pit	Probable	216.30–219.20 Mt	0.58 g/t	4.10 Moz	0.10%	0.20 Mt Cu	31 Dec 2024 *	Copper Reserves at December 31, 2024Unverified Evidence record Boddington Probable · Cu · as at 2024-12-31 Reported figure Area Open Pit Basis attributable Ore tonnes (t) 219200000.0000 Grade 0.1000 Contained (t Cu) 200000.0000 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 9.60% from the printed contained figure, but the printed tonnes/grade/contained are only good to ±11.02% (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)
Open Pit	Total Reserves	407.90 Mt	0.66 g/t	8.60 Moz	—	—	31 Dec 2023	Gold Reserves at December 31, 2023Unverified Evidence record Boddington Total Reserve · Au · as at 2023-12-31 Reported figure Area Open Pit Basis attributable Ore tonnes (t) 407900000.0000 Grade 0.6600 Contained (oz) 8600000.0000 Classification Reserve Source trail 10-K: 10-K Gold Reserves at December 31, 2023 Published 2024-02-29 Verification Approved; not independently verified · Model extracted QA WARN: 2 rows share this exact identity in this document with CONFLICTING figures (sibling copies: t=446700000 g=0.66 conf=0.95) — at most one matches the print; the others are likely fabricated duplicates (verify against the printed table and reject the copies that do not appear). QA WARN: cross-category subtotal — this total_reserve row on area 'Open Pit' equals the sum of the same area's proved+probable leaves — a per-deposit M&I/P&P-style total (t24 LUN/LUG NI 43-101 class). Policy keeps category leaves + the whole-project Total; adjudicate per the per-property-totals precedent before approval. QA BLOCK: conflicting duplicate — this (project, mining area, commodity, classification, category, as-at date) appears 2 times in the document WITH DIFFERENT figures. At most one copy matches the print; verify each against the document and reject the rest (a copy whose figures appear nowhere in the text is fabricated). Copies a pre-filled issue record so you can send it through your normal channel.
Stockpiles	Proved	2.10–5.60 Mt	0.56 g/t	0.10 Moz	0.13%	2.73 kt Cu	31 Dec 2024 *	Copper Reserves at December 31, 2024Unverified Evidence record Boddington Proved · Cu · as at 2024-12-31 Reported figure Area Stockpiles Basis attributable Ore tonnes (t) 2100000.0000 Grade 0.1300 Contained (t Cu) 2730.0000 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 tranche12 QA: verified against printed source table Copies a pre-filled issue record so you can send it through your normal channel.	notes (3)
Stockpiles	Probable	57.80–61.90 Mt	0.43 g/t	0.80 Moz	0.09%	0.10 Mt Cu	31 Dec 2025 *	Gold Reserves at December 31, 2025Unverified Evidence record Boddington Probable · Au · as at 2025-12-31 Reported figure Area Stockpiles Basis attributable Ore tonnes (t) 57800000.0000 Grade 0.4300 Contained (oz) 800000.0000 Classification Reserve Source trail 10-K: 10-K Gold Reserves at December 31, 2025 Published 2026-02-19 Verification Approved; not independently verified · Model extracted QA WARN: unrecognised source metal label 'Grade (g/tonne)' for Au — verify the commodity mapping. Copies a pre-filled issue record so you can send it through your normal channel.	notes (4)
Stockpiles	Total Reserves	72.00 Mt	0.44 g/t	1.00 Moz	—	—	31 Dec 2023	Gold Reserves at December 31, 2023Unverified Evidence record Boddington Total Reserve · Au · as at 2023-12-31 Reported figure Area Stockpiles Basis attributable Ore tonnes (t) 72000000.0000 Grade 0.4400 Contained (oz) 1000000.0000 Classification Reserve Source trail 10-K: 10-K Gold Reserves at December 31, 2023 Published 2024-02-29 Verification Approved; not independently verified · Model extracted QA WARN: 2 rows share this exact identity in this document with CONFLICTING figures (sibling copies: t=78300000 g=0.43 conf=0.95) — at most one matches the print; the others are likely fabricated duplicates (verify against the printed table and reject the copies that do not appear). QA WARN: cross-category subtotal — this total_reserve row on area 'Stockpiles' equals the sum of the same area's proved+probable leaves — a per-deposit M&I/P&P-style total (t24 LUN/LUG NI 43-101 class). Policy keeps category leaves + the whole-project Total; adjudicate per the per-property-totals precedent before approval. QA BLOCK: conflicting duplicate — this (project, mining area, commodity, classification, category, as-at date) appears 2 times in the document WITH DIFFERENT figures. At most one copy matches the print; verify each against the document and reject the rest (a copy whose figures appear nowhere in the text is fabricated). QA INFO: recompute differs 1.85% from the printed contained figure, but the printed tonnes/grade/contained carry ±7.83% rounding granularity (capped per component; the true half-step band of coarse prints is wider) and the remainder sits under the warn threshold — treated as reconciled. Copies a pre-filled issue record so you can send it through your normal channel.