Sustainability Report 2021

Ni Cu Co Li LiOH Au Nova Operation The Nova Operation is a high-grade nickel-copper-cobalt mine located in the Fraser Range, approximately 140km east-northeast of Norseman. The Operation sits within the Great Western Woodlands. The Ngadju people are the Traditional Owners and custodians of this area, with their native title claim being recognised by the Federal Court on 21 November 2014. The Nova deposit was discovered in 2012 and the Operation reached nameplate ore production capacity in 2017. Mining is conducted using underground stoping methods and processing comprises conventional crushing, grinding, flotation and filtration processes to produce high quality nickel and copper concentrates. Nova continued to deliver outstanding operational performance in FY21, with production exceeding guidance for all metals, while cash costs of A$1.85 per payable pound of nickel cements the Operation’s position as the lowest cost nickel producer in Australia. At the core of sustainability at Nova is our progress toward the reduction of greenhouse gas emissions through the use of renewable energy. The Nova solar farm has been operational since 2019 and in FY21 delivered over 11% of Nova’s total power consumption, displacing ~2,444kL of diesel and eliminating 6,600t of carbon. Lithium Joint Venture During FY21, IGO invested in a new joint venture with Tianqi Lithium Corporation whereby IGO acquired a 24.99% effective interest in the Greenbushes Lithium Mine (Greenbushes) and a 49% interest in the Kwinana Lithium Hydroxide Refinery (Kwinana), both located in Western Australia. Greenbushes is a world-class open pit spodumene mine, while Kwinana is a downstream processing facility which will convert spodumene into battery grade lithium hydroxide. The investment is strongly aligned to IGO’s strategic focus on those metals critical to enabling clean energy and delivers both increased global relevance to IGO as well as downstream lithium exposure and greater connectivity to end users. As this transaction settled on 30 June 2021, this Sustainability Report does not report on sustainability performance from these operations. Tropicana Operation (divested in May 2021) The Tropicana Operation is located on the western edge of the Great Victoria Desert, making it one of the most isolated mining operations in Western Australia. The Wongatha and Spinifex peoples are the Traditional Owners and custodians of the land. Gold production at Tropicana is sourced from four contiguous open pits over a strike length of approximately 5km, as well the Boston Shaker Underground Operation, which commenced commercial production in FY21. Tropicana has produced more than three million ounces of gold since first production in 2013. In April 2021, IGO announced the sale of its 30% stake in Tropicana to Regis Resources Limited (Regis) for a headline A$903M in cash consideration, thereby ending a long partnership with AngloGold Ashanti and marking a shift in IGO’s strategy. As this Operation was divested during the financial year, limited sustainability data and performance results are included in this report. IGO SUSTAINABILITY REPORT 2021— 11