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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).

Yanacocha

Peru · 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	17.10 Mt	0.52 g/t	0.30 Moz	31 Dec 2024
Indicated	115.40 Mt	0.63 g/t	2.30 Moz	31 Dec 2024
Inferred	290.70 Mt	0.60 g/t	5.60 Moz	31 Dec 2024
Total Resources	423.20 Mt	0.60 g/t	8.20 Moz	31 Dec 2024
Proved	18.80 Mt	0.81 g/t	0.50 Moz	31 Dec 2025
Probable	108.60 Mt	1.38 g/t	4.80 Moz	31 Dec 2024
Total Reserves	126.40 Mt	1.31 g/t	5.30 Moz	31 Dec 2024

Ag

Category	Tonnes (Mt)	Grade (g/t Ag)	Contained (Moz Ag)	As at
Measured	16.80 Mt	6.52 g/t	3.50 Moz	31 Dec 2024
Indicated	110.10 Mt	11.66 g/t	41.30 Moz	31 Dec 2024
Inferred	92.40 Mt	6.80 g/t	20.30 Moz	31 Dec 2024
Total Resources	219.30 Mt	9.22 g/t	65.10 Moz	31 Dec 2024
Proved	—	—	—	—
Probable

Cu

Category	Tonnes (Mt)	Grade (% Cu)	Contained (Mt Cu)	As at
Measured	3.70 Mt	0.29%	0.01 Mt Cu	31 Dec 2025
Indicated	114.10 Mt	0.61%	0.70 Mt Cu	31 Dec 2025
Inferred	134.90 Mt	0.40%	0.50 Mt Cu	31 Dec 2025
Total Resources	252.70 Mt	0.49%	1.21 Mt Cu	31 Dec 2025
Proved	—	—	—	—
Probable

Cut-off grade

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Price assumption

A$1400.00/oz · A$2000.00/oz · A$1700.00/oz · A$2.75/oz · A$25.00/oz · A$20.00/oz

JORC code year

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Peer benchmark — producing Au projects (282 with resources)Resource size P88Resource grade P23View 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: A$
Disagreement flags: 15 rows

Current R&R

Resources

Area	Category	Tonnes (Mt)	Au		Ag		Cu		As at	Source	Provenance
Area	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
Total	Measured	3.70–17.10 Mt	0.52 g/t	0.30 Moz	6.52 g/t

Open Pit

Measured

12.80–15.60 Mt

0.41 g/t

0.20 Moz

7.91 g/t

3.90 Moz

—

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
@ A$ 1,400/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 BLOCK: recomputed contained 168727.1180 oz vs reported 200000 oz (15.64% disagreement) Rounding-interval overlap exists at the printed granularity, but a 15.64% gap exceeds the 10% interval-waiver ceiling (t23 STM AuEq-miscopy precedent) — verify the printed contained figure before approval.

Reserves

Area	Category	Tonnes (Mt)	Au		Ag		Cu		As at	Source	Provenance
Area	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
Total	Proved	18.80 Mt	0.81 g/t	0.50 Moz	—	—	—	—	31 Dec 2025	Gold Reserves at December 31, 2025Unverified Evidence record Yanacocha Proved · Au · as at 2025-12-31 Reported figure Area Whole project Basis attributable Ore tonnes (t) 18800000.0000 Grade 0.8100 Contained (oz) 500000.0000 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. QA INFO: recompute differs 2.08% from the printed contained figure, but the printed tonnes/grade/contained are only good to ±6.88% (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: Gold Reserves at December 31, 2025 SK-1300 — Reporting code of record: SK-1300 @ A$ 2,000/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 WARN: unrecognised source metal label 'Grade (g/tonne)' for Au — verify the commodity mapping. QA INFO: recompute differs 2.08% from the printed contained figure, but the printed tonnes/grade/contained are only good to ±6.88% (rounding granularity) — treated as reconciled.
Total	Probable	68.30–111.10 Mt	1.38 g/t	4.80 Moz	8.82 g/t	19.40 Moz	0.63%	0.70 Mt Cu	31 Dec 2024 *	Copper Reserves at December 31, 2024Unverified Evidence record Yanacocha Probable · Cu · as at 2024-12-31 Reported figure Area Whole project Basis attributable Ore tonnes (t) 111100000.0000 Grade 0.6300 Contained (t Cu) 700000.0000 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.
Total	Total Reserves	111.10–172.30 Mt	1.31 g/t	5.30 Moz	15.05 g/t	83.40 Moz	0.63%	0.70 Mt Cu	31 Dec 2024	Silver Reserves at December 31, 2024Unverified Evidence record Yanacocha Total Reserve · Ag · as at 2024-12-31 Reported figure Area Whole project Basis attributable Ore tonnes (t) 172300000.0000 Grade 15.0500 Contained (oz) 83400000.0000 Classification Reserve Source trail 10-K: 10-K Silver 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 (4)
Open Pit	Proved	17.70 Mt	0.90 g/t	0.50 Moz	—	—	—	—	31 Dec 2024	Gold Reserves at December 31, 2024Unverified Evidence record Yanacocha Proved · Au · as at 2024-12-31 Reported figure Area Open Pit Basis attributable Ore tonnes (t) 17700000.0000 Grade 0.9000 Contained (oz) 500000.0000 Classification Reserve Source trail 10-K: 10-K Gold Reserves at December 31, 2024 Published 2025-02-21 Verification Approved; not independently verified · Model extracted QA INFO: recompute differs 2.43% from the printed contained figure, but the printed tonnes/grade/contained are only good to ±6.84% (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.	notes (5) Source:
Open Pit	Probable	96.30 Mt	0.78 g/t	2.50 Moz	—	—	—	—	31 Dec 2024	Gold Reserves at December 31, 2024Unverified Evidence record Yanacocha Probable · Au · as at 2024-12-31 Reported figure Area Open Pit Basis attributable Ore tonnes (t) 96300000.0000 Grade 0.7800 Contained (oz) 2500000.0000 Classification Reserve Source trail 10-K: 10-K Gold Reserves at December 31, 2024 Published 2025-02-21 Verification Approved; not independently verified · Model extracted tranche12b deterministic insert: Yanacocha OP probable gold reserve — printed 2,400 koz (96,300 kt @ 0.78 g/t), proven by tonnesxgrade bound, OP total minus proved, and whole-op minus UG; replaces the rejected 2,500 misread [t48 2026-07-27: FIX - printed cell (doc L1820) reads 96,300 kt @ 0.78 = 2,500 koz; the stored 2,400 was back-solved from cross-footing and its tranche12b note falsely claimed 'printed 2,400'. Print is internally inconsistent (cross-foots support 2,400) but the printed cell is canonical per standing policy. t47 agent a3 finding.] Copies a pre-filled issue record so you can send it through your normal channel.	notes (4)
Open Pit	Total Reserves	114.10 Mt	0.80 g/t	2.90 Moz	—	—	—	—	31 Dec 2024	Gold Reserves at December 31, 2024Unverified Evidence record Yanacocha Total Reserve · Au · as at 2024-12-31 Reported figure Area Open Pit Basis attributable Ore tonnes (t) 114100000.0000 Grade 0.8000 Contained (oz) 2900000.0000 Classification Reserve Source trail 10-K: 10-K Gold Reserves at December 31, 2024 Published 2025-02-21 Verification Approved; not independently verified · Model extracted QA INFO: recompute differs 1.20% from the printed contained figure, but the printed tonnes/grade/contained are only good to ±2.39% (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.	notes (5)
Open Pits	Proved	27.50 Mt	0.71 g/t	0.63 Moz	—	—	—	—	31 Dec 2022	Gold Reserves at December 31, 2022Unverified Evidence record Yanacocha Proved · Au · as at 2022-12-31 Reported figure Area Open Pits Basis attributable Ore tonnes (t) 27500000.0000 Grade 0.7100 Contained (oz) 630000.0000 Classification Reserve Source trail 10-K: 10-K Gold Reserves at December 31, 2022 Published 2024-02-29 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: 2 rows share this exact identity in this document with CONFLICTING figures (sibling copies: t=21700000 g=0.80 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 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 fix: print-exact but PRIOR VINTAGE: "Yanacocha Open Pits" Proven 27,500 kt @ 0.71 g/t = 630 koz appears only under the "Gold Reserves at December 31, 2022" header — the 2023 table prints 21,700 kt @ 0.80 g/t = 600 koz for the same line (relabelled "Yanacocha Open Pit") — yet the row is stamped 2023-12-31. as_at must be the table header's own statement d Copies a pre-filled issue record so you can send it through your normal channel.
Open Pits	Probable	119.00 Mt	0.72 g/t	2.75 Moz	—	—	—	—	31 Dec 2022	Gold Reserves at December 31, 2022Unverified Evidence record Yanacocha Probable · Au · as at 2022-12-31 Reported figure Area Open Pits Basis attributable Ore tonnes (t) 119000000.0000 Grade 0.7200 Contained (oz) 2750000.0000 Classification Reserve Source trail 10-K: 10-K Gold Reserves at December 31, 2022 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=107000000 g=0.75 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 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 fix: print-exact but PRIOR VINTAGE: "Yanacocha Open Pits" Probable 119,000 kt @ 0.72 g/t = 2,750 koz appears only under the "Gold Reserves at December 31, 2022" header — the 2023 table prints 107,000 kt @ 0.75 g/t = 2,600 koz for the same line (relabelled "Yanacocha Open Pit") — yet the row is stamped 2023-12-31. as_at must be the table header's own sta Copies a pre-filled issue record so you can send it through your normal channel.
Open Pits and Underground	Probable	93.40 Mt	—	—	19.89 g/t	59.80 Moz	—	—	31 Dec 2024	Silver Reserves at December 31, 2024Unverified Evidence record Yanacocha Probable · Ag · as at 2024-12-31 Reported figure Area Open Pits and Underground Basis attributable Ore tonnes (t) 93400000.0000 Grade 19.8900 Contained (oz) 59800000.0000 Classification Reserve Source trail 10-K: 10-K Silver 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) Source: 10-K: 10-K
Stockpiles and Leach Pads	Probable	78.90 Mt	—	—	9.33 g/t	23.60 Moz	—	—	31 Dec 2024	Silver Reserves at December 31, 2024Unverified Evidence record Yanacocha Probable · Ag · as at 2024-12-31 Reported figure Area Stockpiles and Leach Pads Basis attributable Ore tonnes (t) 78900000.0000 Grade 9.3300 Contained (oz) 23600000.0000 Classification Reserve Source trail 10-K: 10-K Silver 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) Source: 10-K: 10-K
Underground	Probable	12.30 Mt	6.06 g/t	2.40 Moz	—	—	—	—	31 Dec 2024	Gold Reserves at December 31, 2024Unverified Evidence record Yanacocha Probable · Au · as at 2024-12-31 Reported figure Area Underground Basis attributable Ore tonnes (t) 12300000.0000 Grade 6.0600 Contained (oz) 2400000.0000 Classification Reserve Source trail 10-K: 10-K Gold Reserves at December 31, 2024 Published 2025-02-21 Verification Approved; not independently verified · Model extracted tranche12b QA: verified against print/narrative cross-foots Copies a pre-filled issue record so you can send it through your normal channel.	notes (4) Source: 10-K: 10-K
Underground	Total Reserves	12.30 Mt	6.06 g/t	2.40 Moz	—	—	—	—	31 Dec 2024	Gold Reserves at December 31, 2024Unverified Evidence record Yanacocha Total Reserve · Au · as at 2024-12-31 Reported figure Area Underground Basis attributable Ore tonnes (t) 12300000.0000 Grade 6.0600 Contained (oz) 2400000.0000 Classification Reserve Source trail 10-K: 10-K Gold Reserves at December 31, 2024 Published 2025-02-21 Verification Approved; not independently verified · Model extracted tranche12b QA: verified against print/narrative cross-foots Copies a pre-filled issue record so you can send it through your normal channel.	notes (4) Source: 10-K: 10-K