2021 Annual Report

Operational Scorecard & Outlook MINING OPERATION UNITS FY21 GUIDANCE RANGE FY21 ACTUAL FY22 GUIDANCE RANGE Nova (IGO 100%) Nickel in concentrate t 27,000 to 29,000 29,002 25,000 to 27,000 Copper in concentrate t 11,000 to 12,500 13,022 11,500 to 12,500 Cobalt in concentrate t 850 to 950 1,084 900 to 1,000 Cash cost (payable) A$/Ib Ni 2.40 to 2.80 1 1.85 2.00 to 2.40 Sustaining & improvement capex A$M 18 to 20 8.4 19 to 22 Development capex A$M 2 to 4 3.7 5 to 7 Tropicana (IGO 30%) 2 Gold produced (100% basis) oz 348,333 to 394,167 364,751 N/A Gold sold (IGO’s 30% share) oz 104,500 to 118,250 110,402 N/A Cash cost A$/oz Au 1,040 to 1,120 1,081 N/A All-in Sustaining Costs A$/oz Au 1,730 to 1,860 1,720 N/A Sustaining & improvement capex (30%) A$M 10 to 15 6.1 N/A Capitalised waste stripping (30%) A$M 60 to 64 56.1 N/A Underground capex (30%) A$M 9 to 13 8.9 N/A Exploration Expenditure Total Exploration Expenditure A$M 65 63.3 65 1. Revised to A$1.80 to A$2.10/lb Ni (payable) in 3Q21 Quarterly Activities Report. 2. 100% attributable Tropicana production and pro-rata guidance are to 31 May 2021, being the date of completion of the Tropicana divestment to Regis Resources Limited. Operations 14 — IGO ANNUAL REPORT 2021