Production (000 oz)

	YTD 2025	Full Year Guidance 2025
Côté Gold (70%)	118	250 – 280
Westwood (100%)	53	125 – 140
Essakane (90% YTD, 85% - see below)	163	360 – 400
Total attributable production (000s oz)	334	735 – 820

Total attributable production in the first half of the year was 334,000 ounces. The Company expects attributable production in the second half of the year to be approximately 400,000 to 485,000 ounces, positioning the Company to achieve its full year production guidance of 735,000 to 820,000 ounces. The stronger second half is due to continued improvements at the Côté Gold mine during its first full year of operations, coupled with an increase in expected grades at both Essakane and Westwood based on the respective mining sequences.

Costs

	YTD 2025	Updated Full Year Guidance 2025	Previous Full Year Guidance 2025
Côté Gold
Cash costs ($/oz sold)	$1,237	$1,100 - $1,200	$950 – $1,100
AISC ($/oz sold)	$1,625	$1,600 – $1,700	$1,350 – $1,500
Westwood
Cash costs ($/oz sold)	$1,545	$1,275 – $1,375	$1,175 – $1,325
AISC ($/oz sold)	$2,132	$1,800 – $1,900	$1,675 – $1,825
Essakane
Cash costs ($/oz sold)	$1,697	$1,600 – $1,700	$1,400 – $1,550
AISC ($/oz sold)	$2,024	$1,850 – $1,950	$1,675 – $1,825
Consolidated
Cost of sales1 ($/oz sold)	$1,514	$1,375 – $1,475	$1,200 – $1,350
Cash costs1,2 ($/oz sold)	$1,509	$1,375 – $1,475	$1,200 – $1,350
AISC1,2 ($/oz sold)	$1,976	$1,830 – $1,930	$1,625 – $1,800

1. Consists of Côté Gold and Westwood on an attributable basis of 70% and 100% respectively, and an attributable basis of 90% at Essakane for the first half of the year and 85% thereafter.
2. This is a non-GAAP financial measure. See "Non-GAAP Financial Measures".

Capital Expenditures

	YTD 20251			Full Year Guidance 20252			Previous Year Guidance 2025
($ millions)	Sustaining	Expansion	Total	Sustaining	Expansion	Total	Sustaining	Expansion	Total
Côté Gold (IMG share)	$45.4	$9.7	$55.1	$130	$20	$150	$110	$15	$125
Westwood	$31.1	—	$31.1	$70	—	$70	$70	—	$70
Essakane	$62.9	$4.5	$67.4	$110	$5	$115	$110	$5	$115
Corporate	$139.4 $0.7	$14.2 —	$153.6 $0.7	$310 —	$25 —	$335 —	$290 —	$20 —	$310 —
Total3	$140.1	$14.2	$154.3	$310	$25	$335	$290	$20	$310

1. 100% basis, for Westwood and Essakane, and reflects IAMGOLD’s 70% interest in Côté Gold UJV on an incurred basis.
2. Capital expenditures guidance (±5%).
3. Includes $11 million of capitalized exploration and evaluation expenditures also included in the Exploration Outlook guidance table.

Exploration Outlook

	YTD 2025			Full Year Guidance 2025
($ millions)	Capitalized	Expensed	Total	Capitalized	Expensed	Total
Exploration projects – greenfield	$0.2	$11.6	$11.8	—	$25	$25
Exploration projects – brownfield	$6.0	$1.0	$7.0	$11	$2	$13
Total	$6.2	$12.6	$18.8	$11	$27	$38

Income Taxes Paid and Depreciation Outlook

($ millions)	YTD 2025	Updated Full Year Guidance 2025	Previous Full Year Guidance 2025
Depreciation expense	$174.7	$450 (±5%)	$450 (±5%)
Income taxes paid	$77.4	$165 – $175	$120 – $130