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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).

Porvenir

Nicaragua · 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	0.16 Mt	1.86 g/t	0.01 Moz	31 Dec 2025
Indicated	2.81 Mt	1.91 g/t	0.17 Moz	31 Dec 2025
Inferred	1.03 Mt	2.05 g/t	0.07 Moz	31 Dec 2025
Total Resources	4.00 Mt	1.94 g/t	0.25 Moz	31 Dec 2025
Proved	0.65 Mt	3.50 g/t	0.07 Moz	31 Dec 2025
Probable	5.83 Mt	2.79 g/t	0.52 Moz	31 Dec 2025
Total Reserves	6.48 Mt	2.86 g/t	0.60 Moz	31 Dec 2025

Ag

Category	Tonnes (Mt)	Grade (g/t Ag)	Contained (Moz Ag)	As at
Measured	0.16 Mt	10.52 g/t	0.05 Moz	31 Dec 2025
Indicated	2.81 Mt	9.02 g/t	0.82 Moz	31 Dec 2025
Inferred	1.03 Mt	6.77 g/t	0.22 Moz	31 Dec 2025
Total Resources	4.00 Mt	8.50 g/t	1.09 Moz	31 Dec 2025
Proved	0.65 Mt	14.07 g/t	0.29 Moz	31 Dec 2025
Probable

Cu

Category	Tonnes (Mt)	Grade (% Cu)	Contained (Mt Cu)	As at
Measured	0.16 Mt	0.43%	0.91 kt Cu	31 Dec 2025
Indicated	2.81 Mt	0.27%	0.01 Mt Cu	31 Dec 2025
Inferred	1.03 Mt	0.12%	1.36 kt Cu	31 Dec 2025
Total Resources	4.00 Mt	0.24%	0.01 Mt Cu	31 Dec 2025
Proved	0.65 Mt	0.50%	3.18 kt Cu	31 Dec 2025
Probable

Zn

Category	Tonnes (Mt)	Grade (% Zn)	Contained (Mt Zn)	As at
Measured	0.16 Mt	1.82%	2.72 kt Zn	31 Dec 2025
Indicated	2.81 Mt	2.20%	0.06 Mt Zn	31 Dec 2025
Inferred	1.03 Mt	2.35%	0.02 Mt Zn	31 Dec 2025
Total Resources	4.00 Mt	2.22%	0.09 Mt Zn	31 Dec 2025
Proved	0.65 Mt	2.54%	0.02 Mt Zn	31 Dec 2025
Probable

Cut-off grade

80.0000 % Zn · 80.0000 g/t Ag · 80.0000 % Cu · 80.0000 g/t Au · 96.0000 g/t Ag · 96.0000 % Zn · 96.0000 g/t Au · 96.0000 % Cu

Price assumption

US$2150.00/oz

JORC code year

—

Peer benchmark — developing Au projects (284 with resources)Resource size P28Resource grade P77View 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: Mineros Announces Updated Prefeasibility Study for the Porvenir Project and Highlights Emerging Porvenir Polymetallic District · 31 Dec 2025
Reporting code: unknown
Convention: exclusive
Currency assumption: US$
Disagreement flags: 8 rows

Current R&R

Resources

Category	Tonnes (Mt)	Au		Ag		Cu		Zn		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)	Grade (% Zn)	Contained (Mt Zn)	As at	Source	Provenance
Measured	0.16 Mt	1.86 g/t	0.01 Moz	10.52 g/t	0.05 Moz	0.43%

Reserves

Category	Tonnes (Mt)	Au		Ag		Cu		Zn		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)	Grade (% Zn)	Contained (Mt Zn)	As at	Source	Provenance
Proved	0.65 Mt	3.50 g/t	0.07 Moz	14.07 g/t	0.29 Moz	0.50%	3.18 kt Cu	2.54%	0.02 Mt Zn	31 Dec 2025	Table 3: Porvenir Mineral Reserves – Effective December 31, 2025Unverified Evidence record Porvenir Proved · Ag · as at 2025-12-31 Reported figure Area Whole project Basis 100% Ore tonnes (t) 650000.0000 Grade 14.0700 Contained (oz) 294000.0000 Classification Reserve Source trail Mineros Announces Updated Prefeasibility Study for the Porvenir Project and Highlights Emerging Porvenir Polymetallic District Table 3: Porvenir Mineral Reserves – Effective December 31, 2025 Published 2026-03-31 Verification Approved; not independently verified · Model extracted Copies a pre-filled issue record so you can send it through your normal channel.	notes (3) Source: Mineros Announces Updated Prefeasibility Study for the Porvenir Project and Highlights Emerging Porvenir Polymetallic District · published 31 Mar 2026 Ref: Table 3: Porvenir Mineral Reserves – Effective December 31, 2025 Unknown code — Reporting code not yet captured for this row. Cutoff 96.00 g/t Ag — Cut-off grade assumption from the source statement. @ US$ 2,150/oz — Metal price assumption used to derive this estimate.
Probable	5.83 Mt	2.79 g/t	0.52 Moz	12.07 g/t	2.26 Moz	0.35%	0.02 Mt Cu	2.61%	0.15 Mt Zn	31 Dec 2025	Table 3: Porvenir Mineral Reserves – Effective December 31, 2025Unverified Evidence record Porvenir Probable · Au · as at 2025-12-31 Reported figure Area Whole project Basis 100% Ore tonnes (t) 5827000.0000 Grade 2.7900 Contained (oz) 523000.0000 Classification Reserve Source trail Mineros Announces Updated Prefeasibility Study for the Porvenir Project and Highlights Emerging Porvenir Polymetallic District Table 3: Porvenir Mineral Reserves – Effective December 31, 2025 Published 2026-03-31 Verification Approved; not independently verified · Model extracted Copies a pre-filled issue record so you can send it through your normal channel.	notes (3)
Total Reserves	6.48 Mt	2.86 g/t	0.60 Moz	12.27 g/t	2.56 Moz	0.37%	0.02 Mt Cu	2.61%	0.17 Mt Zn	31 Dec 2025	Table 3: Porvenir Mineral Reserves – Effective December 31, 2025Unverified Evidence record Porvenir Total Reserve · Zn · as at 2025-12-31 Reported figure Area Whole project Basis 100% Ore tonnes (t) 6477000.0000 Grade 2.6100 Contained (t Zn) 168736.3616 Classification Reserve Source trail Mineros Announces Updated Prefeasibility Study for the Porvenir Project and Highlights Emerging Porvenir Polymetallic District Table 3: Porvenir Mineral Reserves – Effective December 31, 2025 Published 2026-03-31 Verification Approved; not independently verified · Model extracted Copies a pre-filled issue record so you can send it through your normal channel.	notes (3)