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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).

Essakane

Burkina Faso · Producing · 85.0% 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.

Category	Tonnes (Mt)	Grade (g/t Au)	Contained (Moz Au)	As at
Measured	38.31 Mt	0.52 g/t	0.64 Moz	31 Dec 2025
Indicated	111.68 Mt	1.05 g/t	3.77 Moz	31 Dec 2025
Inferred	24.20 Mt	1.10 g/t	0.85 Moz	31 Dec 2025
Total Resources	117.11 Mt	0.95 g/t	3.59 Moz	31 Dec 2025
Proved	41.05 Mt	0.64 g/t	0.85 Moz	31 Dec 2025
Probable	34.90 Mt	1.09 g/t	1.22 Moz	31 Dec 2025
Total Reserves	57.08 Mt	0.91 g/t	1.68 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

0.3100 g/t Au

Price assumption

US$2500.00/oz · US$1500.00/oz · US$2000.00/oz

JORC code year

—

Data quality

Latest source: lAMGOLD Reports Mineral Resources and Reserves for the Year Ended 2025 · 31 Dec 2025
Reporting code: unknown
Convention: inclusive
Currency assumption: US$

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	38.31 Mt	0.52 g/t	0.64 Moz	31 Dec 2025	TABLE 2 / TABLE 3: MINERAL RESOURCES AND MINERAL RESERVES AS OF DECEMBER 31, 2025Unverified Evidence record Essakane Measured · Au · as at 2025-12-31 Reported figure Area Whole project Basis 100% Ore tonnes (t) 38312000.0000 Grade 0.5200 Contained (oz) 640000.0000 Classification Resource Source trail lAMGOLD Reports Mineral Resources and Reserves for the Year Ended 2025 TABLE 2 / TABLE 3: MINERAL RESOURCES AND MINERAL RESERVES AS OF DECEMBER 31, 2025 Published 2026-02-17 Verification Approved; not independently verified · Model extracted 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	57.08 Mt	0.91 g/t	1.68 Moz	31 Dec 2025	TABLE 1 / TABLE 3: MINERAL RESERVES SUMMARYUnverified Evidence record Essakane Total Reserve · Au · as at 2025-12-31 Reported figure Area Whole project Basis 100% Ore tonnes (t) 57081000.0000 Grade 0.9100 Contained (oz) 1676000.0000 Classification Reserve Source trail lAMGOLD Reports Mineral Resources and Reserves for the Year Ended 2025 TABLE 1 / TABLE 3: MINERAL RESERVES SUMMARY Published 2026-02-17 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: lAMGOLD Reports Mineral Resources and Reserves for the Year Ended 2025 · published 17 Feb 2026 Ref: TABLE 1 / TABLE 3: MINERAL RESERVES SUMMARY Unknown code — Reporting code not yet captured for this row. Cutoff 0.31 g/t Au — Cut-off grade assumption from the source statement. @ US$ 2,000/oz — Metal price assumption used to derive this estimate. QA notes: QA INFO: inclusive-of-reserves flag cleared — the flag describes resource statements; reserve rows carry none.
Open Pit	Probable	34.90 Mt	1.09 g/t	1.22 Moz	31 Dec 2025	TABLE 1: MINERAL RESERVES (@100%) SUMMARYUnverified Evidence record Essakane Probable · Au · as at 2025-12-31 Reported figure Area Open Pit Basis 100% Ore tonnes (t) 34903000.0000 Grade 1.0900 Contained (oz) 1219000.0000 Classification Reserve Source trail lAMGOLD Reports Mineral Resources and Reserves for the Year Ended 2025 TABLE 1: MINERAL RESERVES (@100%) SUMMARY Published 2026-02-17 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: lAMGOLD Reports Mineral Resources and Reserves for the Year Ended 2025 · published 17 Feb 2026 Ref: TABLE 1: MINERAL RESERVES (@100%) SUMMARY
Open Pit (stockpile)	Proved	18.88 Mt	0.65 g/t	0.40 Moz	31 Dec 2024	TABLE 1: MINERAL RESERVES (@100%) SUMMARY / TABLE 3: MINERAL RESERVES AND MINERAL RESOURCES AS OF DECEMBER 31, 2024Unverified Evidence record Essakane Proved · Au · as at 2024-12-31 Reported figure Area Open Pit (stockpile) Basis 100% Ore tonnes (t) 18876000.0000 Grade 0.6500 Contained (oz) 396000.0000 Classification Reserve Source trail lAMGOLD Announces Significant Increase in Nelligan Ounces & Update of Global Mineral Reserves and Resources TABLE 1: MINERAL RESERVES (@100%) SUMMARY / TABLE 3: MINERAL RESERVES AND MINERAL RESOURCES AS OF DECEMBER 31, 2024 Published 2025-02-20 Verification Approved; not independently verified · Model extracted Copies a pre-filled issue record so you can send it through your normal channel.	notes (2) Source: lAMGOLD Announces Significant Increase in Nelligan Ounces & Update of Global Mineral Reserves and Resources · published 20 Feb 2025 Ref: TABLE 1: MINERAL RESERVES (@100%) SUMMARY / TABLE 3: MINERAL RESERVES AND MINERAL RESOURCES AS OF DECEMBER 31, 2024
Stockpile	Proved	22.18 Mt	0.64 g/t	0.46 Moz	31 Dec 2025	TABLE 1: MINERAL RESERVES (@100%) SUMMARYUnverified Evidence record Essakane Proved · Au · as at 2025-12-31 Reported figure Area Stockpile Basis 100% Ore tonnes (t) 22178000.0000 Grade 0.6400 Contained (oz) 457000.0000 Classification Reserve Source trail lAMGOLD Reports Mineral Resources and Reserves for the Year Ended 2025 TABLE 1: MINERAL RESERVES (@100%) SUMMARY Published 2026-02-17 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: lAMGOLD Reports Mineral Resources and Reserves for the Year Ended 2025 · published 17 Feb 2026 Ref: TABLE 1: MINERAL RESERVES (@100%) SUMMARY