REPORTING WHAT MATTERS Every year we engage with key stakeholders both internal and external to IGO to better understand what matters most to them. 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 environmental, social, governance and economic topics, and the significance of these impacts on the business and our stakeholders. The materiality process, in line with best practice corporate reporting and the GRI standards, informs the scope and level of information described throughout this report. The material matters identified were naturally numerous and wide-ranging. These were scored, analysed and prioritised by: • combining feedback from IGO leaders and subject matter experts; • considering stakeholder expectations and feedback; and • analysing the external environment and prevalent issues given media attention. IGO’s Executive Leadership Team sense-checked and reviewed the prioritised topics to ensure our purpose and strategic imperatives were considered. Our Sustainability & Risk Committee and our Board then reviewed and approved the assessment. Our prioritised material topics identified in FY20 are described and presented in the following table and matrix, along with their respective stakeholder boundary. The GRI content index on page 102 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. MATERIAL TOPIC DESCRIPTION AND IGO RESPONSE STAKEHOLDER BOUNDARY PAGE REFERENCE SDG Safety, health and wellbeing of our people The safety, health and wellbeing of our people remains our #1 material issue, representing the highest importance and significance of impact to both IGO and our external stakeholders. The tragic death of one of our contractors’ employees during the financial year remains front-of-mind and the physical and mental wellbeing of the whole IGO ‘family’ is our top priority. Internal, External Page 48 COVID-19 impacts The COVID-19 global pandemic has profoundly impacted the lives of people around the world. At IGO, the health, safety and wellbeing of our people, their families, and the communities in which we operate is our highest priority. In response to the pandemic, we implemented a range of measures to safeguard our people, protect our ability to operate, and minimise the spread of COVID-19 in the communities closest to our operations. IGO and our people have demonstrated great resilience during this time and we remain alert to the risks. Internal, External Page 46 Environmental and land management Exploration and mining activities inherently disturb the natural environment and potentially the livelihoods of landholders, local communities and Traditional Owners. Core to maintaining our social licence to operate is applying best practices to prevent, minimise and rectify impacts. We have an ongoing commitment to making a real but proportionate contribution to addressing environmental challenges such as climate change, biodiversity loss, deforestation, water and air pollution, soil degradation or loss, and waste management. Internal, External Page 52 Ethics, integrity and governance Our governance approach, ethical framework and practices adhere to the highest levels of honesty, integrity, compliance and transparency. These are vital to maintaining the trust and confidence of stakeholders and the Australian public. Internal, External Page 33 Climate change and emissions management Contributing to a low carbon future is a key part of our purpose and strategy, and our Proactively Green pillar outlines our commitment to decarbonisation and electrification. The metals we supply are critical to clean energy storage and the renewable energy revolution. Our response to climate-related risks and opportunities, as well as our actions to build resilience within our business, are set out in the climate change section of this report. We are aligned to the TCFD recommendations, and track and disclose our greenhouse gas emissions. Internal, External Page 65 Protecting cultural heritage We respect Aboriginal people, culture and connection to Country. We manage our exploration and mining operations carefully and collaboratively to mitigate any impacts we may have on culturally significant sites. Our activities are subject to both Aboriginal heritage laws and heritage agreements with the Traditional Owners. Respecting and protecting cultural heritage values and sites jointly with Traditional Owners contributes to the quality of our relationships and future growth prospects. Internal, External Page 77 Capital allocation and growth Our shareholders expect us to allocate capital, deliver on our business strategy and seek the discovery of new resources. An important aspect is our ability to innovate and apply different technologies. This creates growth opportunities and enables us to deliver direct and indirect economic value to our stakeholders. Internal, External Page 87 LEVEL OF IMPORTANCE TO IGO LEVEL OF IMPORTANCE TO OUR STAKEHOLDERS MATERIAL IMPORTANT MATERIAL IMPORTANT Innovation and technology Tailings storage management Transparency, communication and disclosure Safety, health and wellbeing of our people Environmental and land management Climate change and emissions management Ethics, integrity and governance Protecting cultural heritage COVID-19 Impacts Capital allocation and growth Engaged and inclusive workforce Community and regional development Economic performance MATERIALITY MATRIX Optimising business value Making a difference Our response to climate change Business integrity Responsible operations 22 — IGO SUSTAINABILITY REPORT 2020 IGO SUSTAINABILITY REPORT 2020— 23 OUR APPROACH TO SUSTAINABILITY