Sustainability Report 2021

Reporting What Matters In line with best-practice corporate reporting and GRI standards, IGO includes a comprehensive assessment of the material risks and topics facing our business. Each year we engage with key stakeholders, both internal and external to IGO, to better understand what matters most to them and what we believe has a material bearing on the success of our business. By engaging with our stakeholders, being aware of their perspectives and understanding the risks we face, we are better situated to make informed decisions that help support the delivery of our strategy. We apply a materiality framework to assess the impact of our activities on a broad range of ESG and economic topics, and we assess the significance of these impacts on the business and our stakeholders. The materiality process informs the scope and level of information described throughout this report. Our prioritised material topics identified in FY21 are described and presented in the following table and matrix, along with their respective stakeholder boundary. The GRI content index on page 106 includes responses to the GRI standards for general and topic-specific disclosures and the Mining and Metals Sector Supplement indicators, where we have determined the topics to be material to IGO. The content index also notes additional sources of information as we commit to reporting above and beyond what is required of the GRI (Core option) to ensure full transparency. Our Approach to Sustainability Important Significance of Impacts Material Important Level of Importance to our Stakeholders Material 1. Identification and engagement – We combined feedback from IGO employees, leaders and subject matter experts (internal), as well as considering stakeholder expectations, community feedback, investor surveys and analysing the external environmental and prevalent issues given media attention (external). This resulted in the identification of numerous material topics in FY21 that required prioritisation. IGO’s stakeholders and modes of interaction are described on page 96 of this report. 2. Prioritisation – We determined stakeholder concern or importance, and the significance of the material impacts on both the business and our stakeholders. 3. Validation – IGO’s Executive Leadership Team sense- checked and reviewed the prioritised topics to ensure our purpose and strategic imperatives were considered. Our Sustainability Committee and our Board then reviewed and approved the assessment. The material matters identified are naturally numerous and wide-ranging. Our process for scoring, analysing and prioritising material topics includes: MATERIALITY MATRIX HIGH PRIORITIES Safety & wellbeing of our people COVID-19 impacts Protecting cultural heritage Industry skill shortages & tightening labour market Climate change & decarbonisation strategy Ethics, integrity & governance MEDIUM PRIORITIES Culture, diversity & our people Capital allocation & growth Environmental & land management Financial contributions Community & regional development Tailings storage management 22 —IGO SUSTAINABILITY REPORT 2021